The integrated elevator controller is a complex electrical control system.
Fault information generated by the controller can be divided into five levels based on how seriously the fault affects system operation.
Different fault levels trigger different system responses and operating restrictions.
See Table 3-5 for details.
Fault Classification and Controller Response
| Fault Level | Elevator Integrated Controller Fault Status | Elevator Integrated Controller Response |
|---|---|---|
| Level 1 Fault | (1) Fault code displayed (2) Fault relay output activated | 1A — Elevator operation remains unaffected under all operating conditions |
| Level 2 Fault | (1) Fault code displayed (2) Fault relay output activated (3) Elevator can continue normal operation | 2A — Parallel/group control functions disabled 2B — Early door opening and re-leveling functions disabled |
| Level 3 Fault | (1) Fault code displayed (2) Fault relay output activated (3) Output immediately locked after stop and brake closed | 3A — Special deceleration stop at low speed. Restart not allowed 3B — Elevator does not stop during low-speed operation. After high-speed stop, restart allowed after 3-second delay at low speed |
| Level 4 Fault | (1) Fault code displayed (2) Fault relay output activated (3) During distance control, system decelerates to stop and cannot continue operation | 4A — Special deceleration stop at low speed. Restart not allowed 4B — Elevator does not stop during low-speed operation. After high-speed stop, restart allowed after 3-second delay at low speed 4C — Elevator does not stop during low-speed operation. Restart allowed after 3-second delay following stop |
| Level 5 Fault | (1) Fault code displayed (2) Fault relay output activated (3) Immediate stop | 5A — Immediate stop at low speed. Restart not allowed 5B — Elevator does not stop during low-speed operation. Restart allowed after 3-second delay following stop |
Fault Information and Countermeasures (1)
| Fault Code | Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|---|
| Err02 | Acceleration Overcurrent | Main circuit output grounded or short-circuited | (1) Check whether motor wiring is correct and whether the grounding wire is connected incorrectly; (2) Check whether the brake contactor causes output short circuit of the controller; (3) Check whether motor wiring has reverse phase connection |
| Motor parameters not tuned | Set motor parameters according to the motor nameplate and perform motor auto-tuning again | ||
| Encoder signal incorrect | (1) Check whether encoder pulse setting per revolution is correct; (2) Check whether encoder signals are interfered with and whether encoder wiring is routed separately from power cables, whether cable length is excessive, and whether shielding is grounded at one end only; (3) Check whether encoder installation is reliable and whether the rotating shaft is firmly connected to the motor shaft; (4) Check whether encoder wiring is correct and reliable. For asynchronous motors, open-loop operation may be tested to compare current values and determine whether the encoder operates normally | ||
| Motor phase sequence reversed | Swap motor UVW phase sequence | ||
| Acceleration time too short | Reduce acceleration | ||
| Err03 | Deceleration Overcurrent | Main circuit output grounded or short-circuited | (1) Check whether motor wiring is correct and whether the grounding wire is connected incorrectly; (2) Check whether the brake contactor causes controller output short circuit; (3) Check whether motor wiring has reverse phase connection |
| Motor parameters not tuned | Set motor parameters according to the motor nameplate and perform motor auto-tuning again | ||
| Encoder signal incorrect | (1) Check encoder pulse setting per revolution; (2) Check whether encoder signals are interfered with; (3) Check encoder installation reliability; (4) Check encoder wiring correctness and reliability | ||
| Deceleration curve too steep | Reduce deceleration | ||
| Err04 | Constant Speed Overcurrent | Main circuit output grounded or short-circuited | (1) Check whether motor wiring is correct and whether the grounding wire is connected incorrectly; (2) Check whether star-sealing contactor causes output short circuit; (3) Check whether motor cable insulation is damaged |
| Motor parameters not tuned | Set motor parameters according to the motor nameplate and perform motor auto-tuning again | ||
| Encoder signal incorrect | (1) Check encoder pulse setting per revolution; (2) Check encoder interference; (3) Check encoder installation reliability; (4) Check encoder wiring correctness | ||
| Input voltage too high | Check whether input voltage is too high. Observe whether bus voltage exceeds normal range (540–580V under normal 380V input) | ||
| Err05 | Acceleration Overvoltage | Input voltage too high | Check whether input voltage is too high. Observe whether bus voltage exceeds normal range (540–580V under normal 380V input) |
| Brake resistor oversized or brake unit abnormal | (1) Check balance coefficient; (2) Check whether bus voltage rises too quickly during operation. If so, brake resistor may not be working properly or selection may be incorrect; (3) Check whether brake resistor wiring is damaged, grounded, or loose; (4) Refer to brake resistor parameter table and verify actual resistance value; (5) If resistance is normal but overvoltage occurs whenever target speed is reached, reduce L09/12 value to reduce curve following error and prevent system overshoot | ||
| Excessive acceleration in acceleration section | Reduce acceleration | ||
| Err06 | Deceleration Overvoltage | Input voltage too high | Check whether input voltage is too high. Observe whether bus voltage exceeds normal range (540–580V under normal 380V input) |
| Brake resistor oversized or brake unit abnormal | (1) Check balance coefficient; (2) Check whether bus voltage rises too quickly during operation; (3) Check brake resistor wiring condition; (4) Verify brake resistor resistance value; (5) Reduce L09/12 value if system overshoot causes overvoltage | ||
| Excessive deceleration in deceleration section | Reduce deceleration | ||
| Err07 | Constant Speed Overvoltage | Input voltage too high | Check whether input voltage is too high. Observe whether bus voltage exceeds normal range (540–580V under normal 380V input) |
| Brake resistor oversized or brake unit abnormal | (1) Check balance coefficient; (2) Check whether brake resistor operates correctly; (3) Check brake resistor wiring for grounding or looseness; (4) Verify resistor value; (5) Reduce L09/12 value if overvoltage is caused by system overshoot | ||
| Err08 | Maintenance Reminder Fault | Elevator has not undergone power-off maintenance within the specified period | (1) Perform power-off maintenance on the elevator; (2) Disable AC49 maintenance day detection function; (3) Contact the distributor or manufacturer |
| Err09 | Undervoltage Fault | Instantaneous power failure | (1) Check whether power was interrupted during operation; (2) Check whether all power input terminals are securely connected |
| Input voltage too low | Check whether external power supply voltage is too low | ||
| Drive control board abnormal | Contact distributor or manufacturer | ||
| Err10 | Controller Overload | Excessive mechanical resistance | (1) Check whether brake fails to open and whether brake power supply is normal; (2) Check whether guide shoes are too tight |
| Improper balance coefficient | Check whether balance coefficient is reasonable | ||
| Encoder feedback abnormal | Check whether encoder feedback signals and parameter settings are correct and whether synchronous motor encoder initial angle is correct | ||
| Incorrect motor tuning | (1) Check whether motor parameters are correct and retune the motor; (2) If fault occurs during anti-slip test, try using L49 anti-slip function | ||
| Motor phase sequence reversed | Check whether motor UVW phase sequence is correct | ||
| Inverter capacity too small | During no-load constant-speed operation, motor current already exceeds inverter rated current | ||
| Err11 | Motor Overload | Excessive mechanical resistance | (1) Check whether brake fails to open and whether brake power supply is normal; (2) Check whether guide shoes are too tight |
| Improper balance coefficient | Check whether balance coefficient is reasonable | ||
| Incorrect motor tuning | (1) Check motor parameters and retune the motor; (2) During anti-slip test, try using L49 anti-slip function | ||
| Motor phase sequence reversed | Check whether motor UVW phase sequence is correct | ||
| Motor undersized | During no-load constant-speed operation, motor current exceeds motor rated current | ||
| Err12 | Input Phase Loss | Input power asymmetry | (1) Check whether any input phase is missing; (2) Check whether three-phase power is balanced; (3) Check whether power supply voltage is normal |
| Drive control board abnormal | Contact distributor or manufacturer | ||
| Err13 | Output Phase Loss | Loose main circuit output wiring | (1) Check whether motor wiring is secure; (2) Check whether output-side running contactor is operating normally |
| Motor damaged | Check for abnormalities inside the motor | ||
| Err14 | Module Overheating | Ambient temperature too high | Reduce ambient temperature |
| Fan damaged | Replace the fan | ||
| Air duct blocked | (1) Clean the air duct; (2) Check whether installation clearance of controller meets requirements | ||
| Err15 | Output Side Abnormality | Subcode 1 – Brake resistor short circuit | (1) Check whether brake resistor and brake unit wiring are correct and free from short circuit; (2) Check whether main contactor operates normally and whether there is arcing or sticking |
| Subcode 2 – Brake IGBT short circuit fault | Contact manufacturer or distributor | ||
| Err16 | Current Control Fault | Subcode 1 – Excitation current deviation too large | (1) Check whether input voltage is too low, especially with temporary power supply; (2) Check whether controller and motor are securely connected; (3) Check whether running contactor operates normally |
| Subcode 2 – Torque current deviation too large | (1) Check encoder circuit, including pulse settings, interference, cable routing, shielding, and installation reliability; (2) Confirm motor parameters are correct and recommission the motor; (3) Try increasing L16 torque limit | ||
| Err17 | Encoder Interference During Tuning | Subcode 2 – Sin/Cos encoder signal abnormal | (1) Severe interference on Sin/Cos encoder C, D, Z signals. Check whether encoder wiring is separated from power cables and whether grounding is good; (2) Check whether PG card wiring is correct |
| Subcode 3 – UVW encoder signal abnormal | (1) Severe interference on UVW encoder U, V, W signals. Check wiring separation and grounding; (2) Check PG card wiring | ||
| Err18 | Current Detection Fault | Drive control board abnormal | Contact distributor or manufacturer |
| Err19 | Motor Tuning Fault | Subcode 1 – Stator resistance identification failed | Check whether motor wiring is connected correctly |
| Subcode 5 – Magnetic pole position identification failed | |||
| Subcode 8 – Synchronous motor static auto-learning selected but encoder type is not Sin/Cos encoder | Select another tuning method or replace with Sin/Cos encoder | ||
| Subcode 9 – Excessive CD signal fluctuation during synchronous motor static tuning | Check grounding quality due to Sin/Cos encoder CD signal interference | ||
| Subcode 12 – Encoder zero angle not learned during synchronous motor angle auto-learning | In semi-automatic angle learning mode, encoder zero position angle must be obtained in inspection mode before high-speed operation is allowed | ||
| Err20 | Speed Feedback Error | Subcode 1 – Encoder signal not detected during synchronous motor no-load tuning | (1) Check encoder signal wiring; (2) Check PG card operation; (3) Check whether brake is released properly |
| Fault Code | Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|---|
| Err20 | Speed Feedback Error | Subcode 4 – Z signal not detected during synchronous motor identification | Check encoder signal wiring and PG card operation |
| Subcode 5 – SIN/COS encoder signal disconnected | (1) Check whether encoder signal wiring is normal;(2) Check whether PG card operates correctly | ||
| Subcode 7 – UVW encoder signal disconnected | Check UVW encoder signal wiring | ||
| Subcode 14 – Z signal lost during normal operation | Check encoder signal stability and interference | ||
| Subcode 3 / Subcode 15 – Motor phase sequence reversed | (1) Swap any two phases of motor UVW wiring;(2) During synchronous motor load tuning, check whether brake is fully released | ||
| Subcode 9 – Excessive speed deviation | (1) Synchronous motor angle abnormality. Retune the motor;(2) Zero-servo speed loop KP too high. Reduce zero-servo speed loop KP;(3) Speed loop gain too high or integration time too short. Reduce gain or increase integration time;(4) Check whether motor UVW phase sequence is correct | ||
| Subcode 12 – Encoder AB signal lost during startup | (1) Check whether brake is released;(2) Check whether encoder AB signal wiring is disconnected;(3) During anti-slip testing, use L49 anti-slip function if motor cannot start | ||
| Subcode 13 – Encoder AB signal lost during operation | Check whether encoder wiring is normal, whether strong interference exists, or whether brake power loss causes sudden brake locking during operation | ||
| Subcode 19 – Severe interference on Sin/Cos encoder signals during operation | Check encoder circuit for analog signal interference or poor contact | ||
| Subcode 55 – Severe interference or CD signal error during tuning | Check whether Sin/Cos encoder CD signals are reversed or severely interfered with during tuning | ||
| Err21 | Parameter Setting Error | Subcode 2 – Maximum frequency setting lower than motor rated frequency | Increase maximum frequency parameter P09 so that it exceeds motor rated frequency |
| Subcode 3 – Incorrect encoder type setting | Check whether encoder type setting in L01 matches the actual encoder used | ||
| Err22 | Leveling Signal Abnormality | Subcode 101 – Leveling signal stuck active | (1) Check whether leveling and door zone sensors operate correctly;(2) Check vertical alignment and insertion depth of leveling insert plate;(3) Check whether leveling signal input on main control board operates correctly |
| Subcode 102 – Leveling signal lost | Check leveling signal wiring and sensor operation | ||
| Subcode 103 – Excessive pulse deviation during automatic leveling verification | Check whether traction ropes are slipping | ||
| Err23 | Short Circuit Fault | Subcode 1–3 – Ground short circuit | Check whether inverter three-phase output is grounded |
| Subcode 4 – Phase-to-phase short circuit | Check whether inverter output phases are shorted together or grounded | ||
| Err24 | RTC Clock Fault | Subcode 101 – Abnormal control board clock information | (1) Replace clock battery;(2) Replace main control board |
| Err25 | Stored Data Abnormality | Subcode 101–103 – Main control board storage data abnormal | Contact distributor or manufacturer |
| Err26 | Earthquake Signal | Subcode 101 – Earthquake signal active for more than 2 seconds | Check whether earthquake input signal settings match main control board parameters (NO/NC) |
| Err27 | Dedicated Equipment Fault | Reserved | Contact manufacturer or distributor |
| Err28 | Maintenance Fault | Reserved | Contact manufacturer or distributor |
| Err29 | Star-Sealing Contactor Feedback Abnormality | Subcode 101 – Main board star-sealing contactor feedback abnormal | (1) Check whether feedback input signal status is correct (NO/NC);(2) Check whether contactor and corresponding feedback contacts operate normally;(3) Check whether contactor coil power supply is normal |
| Subcode 102 – IO expansion board star-sealing contactor feedback abnormal | Check IO expansion board feedback circuit | ||
| Err30 | Elevator Position Abnormality | Subcode 101 / 102 – During high-speed or re-leveling operation, leveling signals do not change within specified time | (1) Check whether leveling signal wiring is secure and free from grounding or signal short circuits;(2) Check whether floor spacing is excessive or whether re-leveling speed setting (C22) is too low |
| Err33 | Elevator Speed Abnormality | Subcode 101 – Overspeed during high-speed operation | (1) Confirm encoder parameter settings and wiring are correct;(2) Check motor nameplate parameters and retune motor |
| Subcode 102 – Overspeed during inspection or shaft learning operation | Reduce inspection speed or retune motor | ||
| Subcode 103 – Overspeed during unintended car movement | (1) Check whether star-sealing function is effective;(2) Check motor UVW phase sequence | ||
| Subcode 104 / 105 – Overspeed during emergency operation | (1) Check whether emergency power supply capacity matches requirements;(2) Check emergency operation speed settings | ||
| Subcode 106 – Excessive speed measurement deviation on control board | (1) Check encoder wiring;(2) Check SPI communication quality between control board and lower board | ||
| Err34 | Logic Fault | Redundant control board logic abnormality | Contact distributor or manufacturer and replace control board |
| Err35 | Shaft Learning Data Abnormality | Subcode 101 – Current floor is not minimum floor or lower forced slowdown invalid at start of shaft learning | Check whether lower forced slowdown switch operates correctly and whether current floor H51 is minimum floor |
| Subcode 102 – Inspection switch disconnected during shaft learning | Check whether elevator remains in inspection mode | ||
| Subcode 103 – Shaft learning not performed after power-up | Perform shaft learning again | ||
| Subcode 104 / 113 / 114 – Shaft learning not completed in distance control mode | Confirm whether pulse changes in H53 correspond correctly with elevator movement direction | ||
| Subcode 105 – Elevator movement direction inconsistent with pulse change direction | (1) Incorrect NO/NC setting of leveling sensor;(2) Leveling signal flickering caused by improper insert plate installation or electrical interference | ||
| Subcode 106 / 107 / 109 – Abnormal upper/lower leveling sensor spacing or insert plate pulse length | Check insert plate installation and leveling sensor spacing | ||
| Subcode 108 / 110 – No leveling signal change for over 45 seconds during shaft learning | (1) Check leveling sensor wiring;(2) Check whether floor spacing is excessive and increase shaft learning speed (C12) if necessary | ||
| Subcode 111 / 115 – Stored floor height less than 50 cm | Enable ultra-short floor function or check insert plate installation and sensor wiring | ||
| Subcode 112 – Current floor is not top floor after shaft learning completed | Maximum floor parameter A01 set incorrectly or leveling insert plate missing | ||
| Subcode 116 – Upper and lower leveling signals reversed | (1) Check leveling signal wiring;(2) Check whether leveling spacing is reasonable |
| Fault Code | Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|---|
| Err36 | Running Contactor Feedback Abnormality | Subcode 101 – Running contactor output inactive but feedback remains valid | (1) Check whether contactor feedback contacts operate normally;(2) Confirm feedback signal type (NO/NC) |
| Subcode 102 – Running contactor output active but feedback invalid | Check running contactor wiring and feedback contacts | ||
| Subcode 104 – Inconsistent feedback status among redundant running contactor feedback points | (1) Check whether feedback contacts operate correctly;(2) Confirm NO/NC signal settings | ||
| Subcode 105 – Running contactor feedback valid before re-leveling startup | (1) Check whether integrated controller UVW output wiring is correct;(2) Check running contactor coil control circuit | ||
| Subcode 103 – Current too low (≤0.1 A) during acceleration-to-constant-speed transition on asynchronous motor | (1) Check whether integrated controller UVW output wiring is correct;(2) Check running contactor coil control circuit | ||
| Err37 | Brake Contactor Feedback Abnormality | Subcode 101 – Brake contactor output inconsistent with brake feedback status | (1) Check whether brake contactor engages correctly;(2) Check whether brake contactor feedback point settings (NO/NC) are correct;(3) Check brake contactor feedback wiring |
| Subcode 102 – Inconsistent status among redundant brake contactor feedback points | (1) Check whether redundant brake feedback points are correctly configured as NO/NC;(2) Check whether multiple feedback points remain consistent | ||
| Subcode 103 – Brake contactor output inconsistent with brake travel switch 1 feedback | (1) Check whether brake travel switch 1/2 NO/NC settings are correct;(2) Check brake travel switch wiring | ||
| Subcode 106 – Brake contactor output inconsistent with brake travel switch 2 feedback | Check brake travel switch feedback circuit | ||
| Subcode 105 – Brake contactor feedback active before brake release during startup | Check whether brake contactor feedback signal is falsely triggered | ||
| Subcode 104 – Inconsistent status among redundant brake travel switch 1 feedback points | (1) Check NO/NC settings of redundant brake travel feedback points;(2) Check consistency of all redundant feedback signals | ||
| Subcode 107 – Inconsistent status among redundant brake travel switch 2 feedback points | Check brake travel switch 2 feedback consistency | ||
| Subcode 108 – Brake contactor output inconsistent with brake travel switch 1 feedback on IO expansion board | (1) Check whether IO expansion board brake travel switch NO/NC settings are correct;(2) Check brake travel feedback wiring | ||
| Subcode 109 – Brake contactor output inconsistent with brake travel switch 2 feedback on IO expansion board | Check IO expansion board brake travel switch feedback circuit | ||
| Err38 | Rotary Encoder Signal Abnormality | Subcode 101 – No change in F4-03 pulse signal for longer than F1-13 time setting | (1) Confirm encoder selection is correct;(2) Confirm brake operation is normal |
| Subcode 102 – Pulse count increases during downward motor movement | (1) Confirm encoder parameter settings and wiring are correct;(2) Check system grounding and signal grounding reliability;(3) Check whether motor UVW phase sequence is correct | ||
| Subcode 103 – Pulse count decreases during upward motor movement | Check encoder direction and motor phase sequence | ||
| Subcode 104 – Open-loop operation selected in distance control mode | Set distance control mode to closed-loop operation (L04=1) | ||
| Subcode 105 – Lower limit switch activated simultaneously with lower forced slowdown during upward travel | Check upper and lower limit switch wiring | ||
| Subcode 106 – Upper limit switch activated simultaneously with upper forced slowdown during downward travel | Check upper and lower limit switch wiring | ||
| Err39 | Motor Overheating Fault | Subcode 101 – Motor overheating relay input active for specified time | (1) Check whether parameter settings are incorrect (NO/NC);(2) Check whether thermal protection relay operates normally;(3) Check whether motor selection is appropriate or motor is damaged;(4) Improve motor cooling conditions |
| Err41 | Safety Circuit Open | Subcode 101 – Safety circuit signal disconnected | (1) Check status of all safety circuit switches;(2) Check external power supply;(3) Check whether safety circuit contactor operates correctly;(4) Check safety feedback contact signal type (NO/NC) |
| Err42 | Door Lock Open During Operation | Subcode 101 / 102 – Door lock feedback invalid during elevator operation | (1) Check whether hall and car door locks are properly connected;(2) Check whether door lock contactor operates correctly;(3) Check NO/NC configuration of door lock feedback signals;(4) Check external power supply |
| Err43 | Upper Limit Signal Abnormality | Subcode 101 – Upper limit signal activated during upward operation | (1) Check upper limit signal type (NO/NC);(2) Check whether upper limit switch contacts operate correctly;(3) Upper limit switch may be installed too low, causing activation at terminal floor |
| Err44 | Lower Limit Signal Abnormality | Subcode 101 – Lower limit signal activated during downward operation | (1) Check lower limit signal type (NO/NC);(2) Check lower limit switch operation;(3) Lower limit switch may be installed too high |
| Err45 | Forced Slowdown Switch Abnormality | Subcode 101 – Insufficient lower forced slowdown distance during shaft learning | (1) Check whether upper and lower forced slowdown switches operate correctly;(2) Confirm NO/NC settings match controller parameters;(3) Confirm slowdown installation distance satisfies deceleration requirements |
| Subcode 102 – Insufficient upper forced slowdown distance during shaft learning | Check upper forced slowdown installation distance | ||
| Subcode 103 – Forced slowdown signal sticking or abnormal position during normal operation | Inspect slowdown switch installation and operation | ||
| Subcode 106 – Abnormal second-level forced slowdown signal during shaft learning | (1) Check whether upper and lower second-level slowdown signals are reversed;(2) Check NO/NC configuration | ||
| Subcode 107 – Abnormal third-level forced slowdown signal during shaft learning | (1) Check whether upper and lower third-level slowdown signals are reversed;(2) Check NO/NC configuration | ||
| Err46 | Re-Leveling Abnormality | Subcode 101 – Leveling signal invalid during re-leveling operation | Check whether leveling signals operate correctly |
| Subcode 102 – Re-leveling speed exceeds 0.1 m/s | Confirm encoder operation is correct | ||
| Err47 | Door Closing Contactor Abnormality | Subcode 101 – Door closing contactor output active for 2 seconds but feedback invalid or door lock feedback disconnected | (1) Check NO/NC configuration of door closing feedback input;(2) Check whether door closing contactor operates correctly |
| Subcode 102 – Door closing feedback active for 2 seconds without output | Check feedback wiring and contactor status | ||
| Subcode 106 – Door closing feedback active before re-leveling startup | Check whether feedback signal is falsely triggered | ||
| Subcode 103 – Door closing contactor output active for more than 15 seconds during leveling or early door opening | (1) Check whether leveling and re-leveling signals operate correctly;(2) Check whether re-leveling speed setting is too low | ||
| Err48 | Door Opening Fault | Subcode 101 – Continuous failure to reach door-open position exceeds FB-09 setting | (1) Check whether door operator system operates correctly;(2) Check whether car top control board output is normal;(3) Check door-open position signal and door lock signal |
| Err49 | Door Closing Fault | Subcode 101 – Continuous failure to reach door-closed position exceeds FB-09 setting | (1) Check whether door operator system operates correctly;(2) Check whether car top control board output is normal;(3) Check whether door-closed position signal and door lock operate correctly |
| Err50 | Continuous Leveling Signal Loss | Subcode 101 – Leveling signal sticking detected three consecutive times | (1) Check whether leveling and door zone sensors operate correctly;(2) Check insert plate vertical alignment and insertion depth;(3) Check leveling signal input on main control board;(4) Check whether traction ropes are slipping |
| Fault Code | Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|---|
| Err51 | CAN Communication Fault | Subcode 101 – Car top board cannot receive correct CAN communication data within specified time | (1) Check communication cable connections;(2) Check whether car top control board power supply is normal;(3) Check whether integrated controller 24V power supply is normal;(4) Check for strong electrical interference affecting communication |
| Err52 | Hall Call Communication Fault | Subcode 101 – Correct data cannot be received from external Modbus communication within specified time | (1) Check communication cable connections;(2) Check whether integrated controller 24V power supply is normal;(3) Check whether hall call control board addresses are duplicated;(4) Check for strong electrical interference affecting communication |
| Err53 | Door Lock Fault | Subcode 101 – Door lock feedback signal remains active 3 seconds after door-open output and door-closing cancellation | (1) Check whether door lock circuit is bypassed or short-circuited;(2) Check whether door lock feedback signal is correct |
| Subcode 102 – Inconsistent feedback status among redundant door lock feedback points or between door lock 1 and door lock 2 | Check consistency of door lock feedback signals | ||
| Subcode 105 – Door lock 1 bypass signal active during door-closing output 3 seconds after door-open output | Check door lock bypass circuit | ||
| Subcode 106 – Door lock 2 bypass signal active during door-closing output 3 seconds after door-open output | Check door lock bypass circuit | ||
| Subcode 104 – High-voltage and low-voltage door lock signals inconsistent | Check whether high-voltage and low-voltage door lock status feedback signals remain consistent. Fault triggers if inconsistency lasts over 1.5 seconds. Power reset required | ||
| Subcode 107 – Door lock bypass input parameter selected but feedback signal remains disconnected or unconnected | Check whether door lock bypass feedback signal wiring is disconnected or missing | ||
| Err54 | Inspection Startup Overcurrent | Subcode 102 – Current exceeds 120% of rated current during inspection startup | (1) Reduce load;(2) Check whether motor UVW phase sequence is correct;(3) Set F27 Bit1 to 1 to disable startup current detection |
| Err55 | Floor Change Parking Fault | Subcode 101 – Door opening time exceeds FB-06 protection time during automatic operation and door-open position signal is not received | Check door-open position signal for the affected floor |
| Err56 | Door Open/Close Signal Fault | Subcode 101 – Door-open position signal active during operation | (1) Check NO/NC settings of door open/close signals in E34;(2) Check door signal wiring |
| Subcode 102 – Door-closed position signal active during operation | Check door-closed signal wiring and logic | ||
| Subcode 104 – Door-closed signal remains continuously active 3 seconds after door opening when door lock bypass is enabled | Check whether door-closed position signal remains continuously active | ||
| Err57 | SPI Communication Fault | Subcode 101–102 – Communication abnormality between control board and inverter DSP board | Check whether control board and drive board wiring are connected correctly |
| Subcode 103 – Dedicated main board does not match lower board | Contact distributor or manufacturer | ||
| Err58 | Position Protection Switch Abnormality | Subcode 101 – Upper and lower second-level forced slowdown switches disconnected simultaneously | (1) Check NO/NC configuration of forced slowdown switches and limit switches;(2) Check whether controller parameter settings match switch characteristics;(3) Check whether forced slowdown switches or limit switches are falsely triggered |
| Err62 | Analog Signal Disconnection | Subcode 101 – Weighing analog signal disconnected | (1) Check whether weighing analog channel selection F1 is set correctly;(2) Check whether analog signal input wiring on car top board or main control board is correct and whether disconnection exists;(3) Adjust weighing switch function |
| Err64 | External Fault | Subcode 101 – External fault signal remains active for 2 seconds | (1) Check NO/NC settings of external fault point;(2) Check external fault input signal status |
| Err65 | UCMP Detection Abnormality | Fault occurs during UCMP function detection | Check whether brake is fully closed and confirm that no unintended car movement occurs |
| Fault occurs during unintended car movement | Inspect brake holding force and elevator movement condition | ||
| Err66 | Brake Torque Detection Abnormality | Insufficient braking force detected during brake torque test | Check brake clearance |
| Err67 | AFE Fault | Subcode 01 – Overcurrent fault | (1) Check whether AFE or inverter is grounded or short-circuited;(2) Check whether controller parameter settings are reasonable;(3) Check whether power grid output oscillation or abnormalities exist;(4) Check for internal equipment faults;(5) Contact manufacturer |
| Subcode 02 – AFE overheating | (1) Check whether ambient temperature is too high;(2) Check whether cooling fan is damaged or ventilation duct blocked;(3) Check whether module is damaged;(4) Contact manufacturer for circuit inspection;(5) Reduce load if overloaded;(6) Check whether bus voltage detection is abnormal | ||
| Subcode 04 – Bus undervoltage | Check bus voltage and power supply condition | ||
| Subcode 06 – Bus overvoltage | (1) Install braking resistor on inverter;(2) Check grid voltage and wiring;(3) Check model matching and operating conditions;(4) Contact manufacturer to inspect voltage loop settings | ||
| Subcode 07 – AFE overload | Check whether equipment power capacity is properly matched | ||
| Subcode 08 – Grid overvoltage | (1) Check whether power grid voltage is normal;(2) Contact manufacturer for circuit inspection | ||
| Subcode 09 – Grid undervoltage | Check input power supply | ||
| Subcode 10 – Grid overfrequency | Check power grid frequency | ||
| Subcode 11 – Grid underfrequency | Check power grid frequency | ||
| Subcode 12 – Grid voltage asymmetry | (1) Check whether three-phase grid voltage is balanced;(2) Check input wiring;(3) Contact manufacturer for circuit inspection | ||
| Subcode 13 – Grid phase-lock fault | Check grid synchronization | ||
| Subcode 14 – AFE current asymmetry | (1) Check whether three-phase input is normal;(2) Check whether load is excessive;(3) Check whether system has ground short circuit;(4) Contact manufacturer for circuit inspection | ||
| Subcode 15 – Cycle-by-cycle current limiting fault | Check inverter current limiting function | ||
| Subcode 16 – Zero-sequence current fault | Check grounding condition | ||
| Subcode 17 – Current offset drift fault | Contact manufacturer | ||
| Subcode 19 – CAN communication abnormality | (1) Check whether main control board software supports AFE;(2) Check whether parameter F31 Bit2 is set correctly;(3) Check communication cable connection | ||
| Subcode 21 – Parallel 485 communication fault | Check RS485 communication circuit | ||
| Subcode 201 / 202 – CAN communication abnormality | Check CAN communication network | ||
| Subcode 23 – Bus polarity reversal fault | Check bus wiring and reverse polarity if necessary | ||
| Err69 | ARD Fault | Subcode 22 / 103 – ARD communication fault | (1) Check communication cable connections;(2) Check whether ARD power supply operates normally;(3) Check whether integrated controller 24V power supply is normal;(4) Check for strong communication interference |
| Subcode 1–3 / 8 – ARD overcurrent fault | (1) Check whether load is normal;(2) Check whether wiring is correct;(3) Check whether load is excessive;(4) Contact manufacturer | ||
| Subcode 10 – ARD overload | (1) Check whether battery wiring is correct;(2) Check whether correct 48V battery type is used;(3) Replace battery if battery life has deteriorated;(4) Check for prolonged operation or excessive ambient temperature | ||
| Subcode 4–7 – ARD battery fault | (1) Check whether battery charge level is within normal range;(2) Check battery voltage;(3) Contact manufacturer | ||
| Subcode 11 – ARD bus overvoltage | (1) Check whether grid voltage is normal and whether incorrect 380V wiring exists;(2) Contact manufacturer | ||
| Subcode 12 – ARD bus undervoltage | (1) Restart the control cabinet. If fault persists, inspect cabinet condition;(2) Check whether K4 main relay is sticking;(3) Check whether K2 inverter relay is sticking;(4) Check whether K1 brake release relay is sticking | ||
| Subcode 13 – ARD inverter overvoltage | Check ARD inverter circuit | ||
| Subcode 31 – Lithium battery low-level warning | (1) Check whether lithium battery is damaged;(2) Recharge battery if excessively discharged |
Fault Information and Countermeasures (2)
| Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|
| Acceleration Overcurrent | (1) Main circuit output grounded or short-circuited; (2) Motor parameters not tuned correctly; (3) Excessive load; (4) Encoder signal incorrect; (5) UPS running feedback signal abnormal | (1) Check controller output side and running contactor status; (2) Check whether power cables are damaged, grounded, or loosely connected; (3) Check whether motor terminals are grounded or internally short-circuited; (4) Check whether star-sealing contactor causes output short circuit; (5) Verify motor parameters against motor nameplate; (6) Perform motor auto-tuning again; (7) Check whether brake remains released before fault occurs or whether mechanical jamming exists; (8) Check balance coefficient; (9) Check encoder wiring reliability. For asynchronous motors, open-loop operation may be used to compare current values and verify encoder operation; (10) Check encoder pulse-per-revolution setting, signal interference, cable routing, shielding, and grounding; (11) Check encoder installation reliability and shaft connection stability; (12) Check whether UPS feedback remains active during non-UPS operation; (13) Check whether acceleration and deceleration settings are excessive |
| Acceleration Overvoltage | (1) Input voltage too high; (2) Severe elevator overhauling effect caused by imbalance; (3) Brake resistor oversized or brake unit abnormal; (4) Acceleration curve too steep | (1) Adjust input voltage and monitor bus voltage rise during operation; (2) Check balance coefficient; (3) Select suitable brake resistor; (4) Check whether brake resistor wiring is damaged, grounded, or loose |
| Deceleration Overvoltage | (1) Input voltage too high; (2) Brake resistor oversized or brake unit abnormal; (3) Deceleration curve too steep | Check input voltage, brake resistor condition, and deceleration curve settings |
| Constant-Speed Overvoltage | (1) Input voltage too high; (2) Brake resistor oversized or brake unit abnormal | Check power supply voltage and brake resistor operation |
| Upper Buffer Relay Does Not Engage | (1) External power supply unstable; (2) Hardware fault | (1) Confirm external power stability and inspect all power input terminals; (2) Avoid repeatedly powering on equipment before complete shutdown; (3) Contact distributor or manufacturer if hardware is damaged |
| Undervoltage Fault | (1) Instantaneous power interruption; (2) Input voltage too low; (3) Drive control board abnormal | (1) Eliminate external power supply problems; (2) Check all power input terminal connections; (3) Contact distributor or manufacturer |
| Drive Overload | (1) Brake circuit abnormality; (2) Excessive load; (3) Encoder feedback abnormality; (4) Incorrect motor parameters; (5) Motor power cable abnormality | (1) Check brake circuit and power supply; (2) Reduce load; (3) Check encoder feedback signals and settings; (4) Adjust motor parameters; (5) Inspect motor power cables |
| Motor Overload | (1) Incorrect FC-02 parameter setting; (2) Brake circuit abnormality; (3) Excessive load | (1) Adjust parameters and keep FC-02 at default value if necessary; (2) Refer to Err10 troubleshooting procedure |
| Input Phase Loss | (1) Input power asymmetry; (2) Drive control board abnormality | (1) Check whether three-phase input power is balanced and voltage is normal; (2) Adjust input power supply; (3) Contact distributor or manufacturer |
| Output Phase Loss | (1) Loose output wiring in main circuit; (2) Motor damage | (1) Check wiring connections; (2) Check output-side contactors; (3) Eliminate motor faults |
| Module Overheating | (1) Ambient temperature too high; (2) Cooling fan damaged; (3) Ventilation duct blocked | (1) Reduce ambient temperature; (2) Clean ventilation ducts; (3) Replace cooling fan; (4) Check installation clearance around controller |
| Current Control Fault | (1) Excessive excitation current deviation; (2) Excessive torque current deviation; (3) Torque limit duration exceeded | (1) Check encoder circuit; (2) Check whether output breaker is disconnected; (3) Check whether current loop parameters are too small; (4) Relearn motor angle if zero position is incorrect; (5) Reduce load |
| Encoder Reference Signal Abnormality | (1) Excessive deviation between Z signal and absolute position during tuning; (2) Absolute position angle deviation exceeds 70° | (1) Check encoder operation; (2) Check encoder wiring reliability; (3) Check PG card wiring; (4) Confirm grounding quality of control cabinet and traction machine |
| Current Detection Fault | Drive control board abnormality | Contact distributor or manufacturer |
| Motor Tuning Fault | (1) Motor cannot operate normally; (2) Tuning timeout; (3) Synchronous motor rotary encoder abnormality | (1) Enter motor parameters correctly; (2) Check motor leads and output-side contactors for phase loss; (3) Check encoder wiring and pulse settings; (4) Confirm brake is released during no-load tuning; (5) During synchronous motor loaded tuning, do not release inspection operation button before tuning completes |
| Speed Feedback Error | (1) Subcode 1 – AB signal lost during identification; (2) Subcode 4 – Z signal not detected during identification; (3) Subcode 5 – SIN/COS encoder CD disconnection; (4) Subcode 7 – UVW encoder signal disconnection; (5) Subcode 9 – Overspeed or excessive speed deviation; (6) Subcode 10/11 – SIN/COS encoder AB or CD signal interference; (7) Subcode 12 – Torque limited while speed feedback remains zero; (8) Subcode 13 – AB signal lost during operation; (9) Subcode 14 – Z signal lost during operation; (10) Subcode 19 – AB analog signal disconnected during low-speed operation; (11) Subcode 55 – CD signal error or severe Z signal interference during tuning | (1) Verify synchronous motor parameter settings F1-000/12/25; (2) Check encoder signal wiring; (3) Improve grounding and eliminate interference; (4) Check for mechanical jamming during operation; (5) Confirm brake is fully released during operation |
| Leveling Signal Abnormality | Subcode 101 – Excessive position deviation during automatic operation. Automatic reset at terminal floor | (1) Check leveling and door zone sensors; (2) Check vertical alignment and insertion depth of leveling insert plate; (3) Check leveling signal input on main control board; (4) Check whether traction ropes are slipping |
| RTC Clock Fault | Subcode 101 – Abnormal clock information during operation | (1) Replace clock battery; (2) Replace main control board |
| Earthquake Signal | Earthquake signal active for more than 2 seconds | Check whether earthquake input signal matches main control board parameter settings (NO/NC) |
| Star-Sealing Contactor Feedback Abnormality | Subcode 101 – Synchronous motor star-sealing contactor feedback abnormality | (1) Check whether feedback contact type matches main control board parameter settings (NO/NC); (2) Check consistency between control board output indicators and contactor operation; (3) Check whether feedback contacts and input points respond correctly after contactor activation; (4) Check compatibility between star-sealing contactor and control board output characteristics; (5) Check contactor coil circuit |
| Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|
| Elevator Position Abnormality | Subcode 101 / 102 – During high-speed operation or re-leveling mode, operating time exceeds F9-02 protection time | (1) Check whether upper and lower leveling switches are falsely triggered during re-leveling;(2) Check whether leveling signal wiring is reliable and free from grounding or short-circuit conditions;(3) Excessive floor spacing may cause excessively long re-leveling time;(4) Check whether F9-02 slip detection time is set reasonably and exceeds full-speed travel time;(5) Check encoder circuit for signal loss;(6) In rescue mode, E30 fault timing is determined based on rescue speed and maximum floor spacing. If upper leveling signal does not change, Subcode 101 is triggered; if lower leveling signal does not change, Subcode 102 is triggered. After power cycling, persistent faults trigger Subcode 103 and require manual reset |
| Emergency Operation Abnormality | (1) Subcode 101 – In unintended car movement rescue mode, operation time exceeds F6-26 rescue duration;(2) Subcode 102 – During emergency drive operation, operation time exceeds F6-26 rescue duration | (1) Check whether emergency power supply capacity matches system requirements;(2) Check whether emergency operation speed settings are correct |
| Elevator Speed Abnormality | (1) Overspeed during inspection mode or shaft learning mode;(2) Elevator speed exceeds 1.15 times maximum speed parameter F0-03;(3) During unintended car movement rescue or emergency operation, speed exceeds half of rated speed | (1) Reduce inspection speed or retune the motor;(2) Confirm encoder selection and operation are correct;(3) Check motor nameplate parameter settings;(4) Perform motor auto-tuning again;(5) Check inspection switch and signal wiring;(6) Confirm inspection signal is not activated during high-speed operation;(7) Check whether star-sealing function operates correctly;(8) Check whether emergency power supply capacity is sufficient;(9) Check emergency operation speed settings |
| Shaft Learning Data Abnormality | (1) Subcode 1 / 10 – Pulse verification error or shaft learning not performed;(2) Subcode 2 – Pulse count lower than reference value, possible pulse direction error;(3) Subcode 1 / 4 – Insert plate too long, possible pulse direction error;(4) Subcode 5 – No leveling signal detected within 45 seconds during shaft learning;(5) Subcode 7 – Leveling signal continuously active during shaft learning for 45 seconds;(6) Subcode 8 – Learned floor height too short;(7) Subcode 9 – Current floor is not top floor at end of shaft learning, possible upper forced slowdown switch position issue;(8) Subcode 11 – Pulse verification error;(9) Subcode 12 – Upper and lower leveling signals reversed;(10) Subcode 101 – During shaft learning, current floor is not minimum floor or lower forced slowdown invalid in open-loop slowdown mode;(11) Subcode 102 – Inspection switch disconnected during shaft learning operation;(12) Subcode 103 – Shaft learning not performed after power-up | (1) Subcode 1 / 10 – Perform shaft learning again;(2) Subcode 2–5 / 7 / 11 – ① Confirm pulse change in F4-03 matches elevator movement direction (upward movement increases F4-03, downward movement decreases F4-03). If inconsistent, adjust using F5-05;② Check whether leveling sensor NO/NC settings are correct;③ Check whether leveling signal flickers due to improper insert plate installation or electrical interference;(3) Subcode 5 – Check whether operation exceeds F9-02 timeout protection without receiving leveling signal;(4) Subcode 8 – If floor height is below 50 cm, enable ultra-short floor function. Otherwise inspect insert plate installation and sensors;(5) Subcode 9 – Check whether maximum floor parameter F6-00 is set too low and inspect upper forced slowdown switch position;(6) Subcode 12 – Check whether upper and lower leveling signal settings are reversed;(7) Subcode 101 – Check whether lower forced slowdown switch operates correctly and whether current floor F4-01 is set as minimum floor;(8) Subcode 102 – Check whether elevator remains in inspection mode;(9) Subcode 103 – Perform shaft learning |
| Running Contactor Feedback Abnormality | (1) Subcode 101 / 102 – During startup, running contactor feedback remains active while running contactor output is inactive;(2) Subcode 103 – After running contactor output activates during startup, no feedback received within 2 seconds;(3) Subcode 104 – Inconsistent status among redundant running feedback points | (1) Check whether contactor feedback contacts operate normally;(2) Confirm NO/NC characteristics of feedback contacts;(3) Check whether elevator controller U/V/W output wiring is connected correctly;(4) Check whether running contactor coil control circuit operates normally |
| Brake Contactor Feedback Abnormality | (1) Brake contactor output inconsistent with brake feedback status;(2) Inconsistent status among redundant brake feedback points | (1) Check whether brake coil and feedback contacts operate correctly;(2) Confirm NO/NC characteristics of feedback contacts;(3) Check whether brake contactor coil control circuit operates normally |
| Rotary Encoder Signal Abnormality | (1) Subcode 1 – Open-loop vector control selected during distance control operation outside inspection mode;(2) Subcode 2 / 3 – During non-leveling or shaft learning operation, elevator moves more than 10 cm in opposite direction (Subcode 2 during upward travel, Subcode 3 during downward travel);(3) Subcode 4 – During vector control operation outside leveling or shaft learning mode, no pulse change detected within FH-03 time limit | (1) Confirm rotary encoder selection is correct;(2) Swap encoder A/B phase signals if necessary;(3) Check F0-00 setting and change to closed-loop control mode;(4) Check reliability of system grounding and signal grounding;(5) Check wiring between encoder and PG card |
| Motor Overheating Fault | Motor thermal relay input remains active for specified duration | (1) Check whether thermal protection relay operates correctly;(2) Confirm motor selection is appropriate and motor is not damaged;(3) Improve motor cooling conditions |
| Elevator Operation Timeout | Elevator operating time exceeds allowable limit | Elevator has operated for excessive duration and requires maintenance inspection |
| Safety Circuit Open | Safety circuit signal disconnected | (1) Check all safety circuit switches and their operating status;(2) Check external power supply condition;(3) Check whether safety circuit contactor operates correctly;(4) Confirm NO/NC characteristics of safety feedback contacts;(5) If safety circuit disconnects during normal operation, Err41 is recorded. During inspection mode, Err41 is not recorded because the inspection electrical circuit changes the safety circuit logic |
| Door Lock Open During Operation | Door lock feedback invalid during elevator operation | (1) Check whether hall and car door locks are connected correctly;(2) Check whether door lock contactor operates correctly;(3) Confirm NO/NC characteristics of door lock contactor feedback signals;(4) Check external door power supply |
| Upper Limit Signal Abnormality | Upper limit signal activated during upward operation | (1) Check NO/NC characteristics of upper limit signal;(2) Check whether upper limit switch contacts operate correctly;(3) Limit switch may be installed too low, causing activation at terminal floor |
| Lower Limit Signal Abnormality | Lower limit signal activated during downward operation | (1) Check NO/NC characteristics of lower limit signal;(2) Check whether lower limit switch contacts operate correctly;(3) Limit switch may be installed too low, causing activation at terminal floor |
| Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|
| Forced Slowdown Switch Abnormality | (1) Upward forced slowdown switch 1 abnormal;(2) Upward forced slowdown switch 1 sticking;(3) Upward forced slowdown switch 2 abnormal;(4) Upward forced slowdown switch 2 sticking;(5) Upward forced slowdown switch 3 abnormal;(6) Upward forced slowdown switch 3 sticking;(7) Downward forced slowdown switch 1 abnormal;(8) Downward forced slowdown switch 1 sticking;(9) Downward forced slowdown switch 2 abnormal;(10) Downward forced slowdown switch 2 sticking;(11) Downward forced slowdown switch 3 abnormal;(12) Downward forced slowdown switch 3 sticking;(13) During shaft learning, upper forced slowdown switch position is less than required braking distance;(14) During shaft learning, lower forced slowdown switch position is less than required braking distance | Subcode 1–14:(1) Check whether upper and lower forced slowdown switches operate normally;(2) Confirm NO/NC characteristics of forced slowdown signals;(3) Confirm slowdown installation distance satisfies deceleration requirements for the elevator speed |
| Re-Leveling Abnormality | (1) Re-leveling speed exceeds 0.1 m/s;(2) Re-leveling operation occurs outside leveling zone;(3) Door-closing feedback abnormal during operation | (1) Check primary and secondary wiring of door-closing relay;(2) Check whether door-closing feedback function is enabled and whether feedback signals are normal;(3) Confirm rotary encoder operation is correct |
| Door-Closing Contactor Abnormality | (1) Subcode 101 – During leveling or early door opening, door-closing contactor output remains active for 2 seconds but door-closing feedback remains invalid or door lock disconnects;(2) Subcode 102 – During leveling or early door opening, door-closing contactor output inactive but door-closing feedback remains active for 2 seconds;(3) Subcode 103 – During leveling startup, door-closing contactor feedback already active;(4) Subcode 104 – During re-leveling or early door opening, door-closing contactor output remains active for more than 15 seconds | (1) Subcode 101–102:① Check NO/NC characteristics of door-closing contactor feedback signal;② Check whether door-closing contactor operates normally;(2) Subcode 103:① Check whether leveling and re-leveling signals operate correctly;② Check whether re-leveling speed setting is too low |
| Door Opening Fault | Consecutive door-opening failures exceed FB-13 setting | (1) Check whether door operator system operates normally;(2) Check whether car top control board operates normally;(3) Check whether door-open position signal is correct |
| Door Closing Fault | Consecutive door-closing failures exceed FB-13 setting | (1) Check whether door operator system operates normally;(2) Check whether car top control board operates normally;(3) Check whether door lock operates correctly |
| CAN Communication Fault | No valid CAN communication data received from car top board within specified time | (1) Check communication cable connections;(2) Check whether car top control board power supply is normal;(3) Check whether main controller 24V power supply is normal;(4) Check for strong electrical interference affecting communication |
| Hall Call Communication Fault | No valid data received from external MODbus communication within specified time | (1) Check communication cable connections;(2) Check whether main controller 24V power supply is normal;(3) Check whether hall call board addresses are duplicated;(4) Check for strong electrical interference affecting communication |
| Door Lock Fault | (1) During door opening, door lock feedback signals remain simultaneously active for more than 3 seconds, or multiple door lock feedback signals are inconsistent;(2) During each door opening operation, the system checks for door lock bypass conditions. If front door lock bypass point remains active for 2 seconds after early door-opening output, E53 Subcode 105 is triggered. Rear door bypass activates Subcode 106;(3) If door lock bypass input is selected but wiring is disconnected or absent for 1 second after door closing completes, E53 Subcode 107 is triggered and requires manual reset;(4) During door-closing process, bypass detection points become inactive. After door-closing cancellation, the system continues checking bypass points and main door lock. If bypass point remains active for 2 seconds, E53 Subcode 105 or 106 is triggered;(5) After enabling door lock bypass input, if Bit6(F8-11)=0, the system monitors door-closed position signals. If signal remains active 2 seconds after 3-second door-opening output delay, Fault 56 Subcode 106 is triggered. No door-closing operation is permitted during bypass detection | (1) Check whether door lock circuit operates correctly;(2) Check whether door lock contactor feedback contacts operate correctly;(3) Check whether system receives door-open position signal while door lock signal remains active;(4) When hall and car door lock signals are monitored separately, check for inconsistent status between hall and car door locks |
| Floor Change Parking Fault | Subcode 101 – During automatic operation and door opening, door opening time exceeds FB-10 protection time | Check door-open position signal for the affected floor |
| Door Lock Fault | (1) Door-open and door-closed position signals active simultaneously for 0.5 seconds triggers Fault 56 Subcode 103;(2) During normal operation without door-closing output (no early door opening), door-closed signal invalid for 0.5 seconds triggers Fault 56 Subcode 102;(3) During normal operation without door-closing output, door-open signal active for 0.5 seconds triggers Fault 56 Subcode 101;(4) Without bypass enabled, these faults are classified as Level 2B faults. With bypass enabled, they become Level 5A faults | (1) Check whether door lock circuit operates correctly;(2) Check whether door lock contactor feedback contacts operate correctly;(3) Check whether system receives door-open position signal while door lock signal remains active;(4) When hall and car door lock signals are monitored separately, check for inconsistent status between hall and car door locks |
| SPI Communication Fault | SPI communication abnormality. No correct data received from DSP communication for 2 consecutive seconds | Check whether control board and drive board wiring are correct |
| Position Protection Switch Abnormality | (1) Upper and lower first-level forced slowdown switches disconnected simultaneously;(2) Upper and lower limit feedback disconnected simultaneously | (1) Check whether forced slowdown switches and limit switches (NO/NC) match main control board parameter settings;(2) Check whether forced slowdown switches or limit switches are falsely triggered |
| Leveling Signal Abnormality | (1) Upper leveling and lower leveling signals lost;(2) Upper leveling and door zone signals lost;(3) Lower leveling and door zone signals lost;(4) Upper leveling, lower leveling, and door zone signals all lost | (1) Check whether leveling sensor wiring is correct;(2) Check NO/NC characteristics of leveling signals;(3) Check whether leveling signal parameters and related settings are correct |
| Leveling Signal Abnormality | (1) Door zone signal sticking;(2) Upper and lower leveling signals sticking;(3) Upper leveling and door zone signals sticking;(4) Lower leveling and door zone signals sticking;(5) Upper leveling, lower leveling, and door zone signals all sticking | (1) Check whether leveling sensor wiring is correct;(2) Check NO/NC characteristics of leveling signals;(3) Check whether corresponding leveling signal settings are correct |
| Brake Feedback Abnormality | Left/right brake feedback abnormality | Check whether micro switches inside brake box operate correctly; check whether brake clearance is too large or too small; check left/right brake control circuits and monitoring wiring connections |
| Elevator Control Board Coding Error | Main board code FP-05 / FP-06; inverter drive code FH-27 / FH-28; hall call board (physical address 1) FL-43 / FL-44 | (1) Check whether all hall call board physical addresses are configured correctly and communication is normal;(2) Check whether door operator service floor settings are correct, including safety door settings;(3) Check whether all control board codes are consistent |
| UCMP Alarm | Unintended car movement protection activated | (1) Check whether traction machine brake mechanical components are jammed, preventing brake closure and causing car movement;(2) Check whether upper and lower leveling sensors operate correctly |
| Brake Torque Detection Failure | Brake torque detection failed | (1) Check whether traction machine brake operates normally;(2) Check wear condition of brake friction pads;(3) Check whether brake input voltage is normal. Fault can only be cleared after brake torque test passes again |
| Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|
| AFE Fault | Subcode 01 – Overcurrent fault | (1) Check whether AFE or inverter output is grounded or short-circuited;(2) Check whether controller parameter settings are reasonable;(3) Check whether grid output oscillation or abnormality exists;(4) Check for internal hardware faults;(5) Contact manufacturer |
| AFE Fault | Subcode 02 – AFE overheating | (1) Check whether ambient temperature is too high;(2) Check whether cooling fan is damaged or ventilation duct is blocked;(3) Check whether module is damaged;(4) Contact manufacturer to inspect the circuit;(5) Reduce load if overloaded;(6) Check whether bus voltage detection is abnormal |
| AFE Fault | Subcode 04 – Bus undervoltage | Check bus voltage and power supply condition |
| AFE Fault | Subcode 06 – Bus overvoltage | (1) Install braking resistor on inverter side;(2) Check grid voltage and wiring;(3) Check model matching and operating conditions;(4) Contact manufacturer to inspect voltage loop settings |
| AFE Fault | Subcode 07 – AFE overload | Check whether equipment power capacity is properly matched |
| AFE Fault | Subcode 08 – Grid overvoltage | (1) Check whether power grid voltage is normal;(2) Contact manufacturer for circuit inspection |
| AFE Fault | Subcode 09 – Grid undervoltage | Check input power supply |
| AFE Fault | Subcode 10 – Grid overfrequency | Check power grid frequency |
| AFE Fault | Subcode 11 – Grid underfrequency | Check power grid frequency |
| AFE Fault | Subcode 12 – Grid voltage asymmetry | (1) Check whether three-phase grid voltage is balanced;(2) Check input wiring;(3) Contact manufacturer for circuit inspection |
| AFE Fault | Subcode 13 – Grid phase-lock fault | Check grid synchronization |
| AFE Fault | Subcode 14 – AFE current asymmetry | (1) Check whether three-phase input is normal;(2) Check whether load is excessive;(3) Check whether system has ground short circuit;(4) Contact manufacturer for circuit inspection |
| AFE Fault | Subcode 15 – Cycle-by-cycle current limiting fault | Check inverter current limiting function |
| AFE Fault | Subcode 16 – Zero-sequence current fault | Check grounding condition |
| AFE Fault | Subcode 17 – Current offset drift fault | Contact manufacturer |
| AFE Fault | Subcode 19 – CAN communication abnormality | (1) Check whether main control board software supports AFE;(2) Check whether parameter F31 Bit2 is set correctly;(3) Check communication cable connections |
| AFE Fault | Subcode 21 – Parallel RS485 communication fault | Check RS485 communication circuit |
| AFE Fault | Subcode 201 / 202 – CAN communication abnormality | Check CAN communication network |
| AFE Fault | Subcode 23 – Bus polarity reversal fault | Check bus wiring and correct reverse polarity if necessary |
| ARD Fault | Subcode 22 / 103 – ARD communication fault | (1) Check communication cable connections;(2) Check whether ARD power supply operates normally;(3) Check whether integrated controller 24V power supply is normal;(4) Check for strong communication interference |
| ARD Fault | Subcode 1–3 / 8 – ARD overcurrent fault | (1) Check whether load is normal;(2) Check whether wiring is correct;(3) Check whether load is excessive;(4) Contact manufacturer |
| ARD Fault | Subcode 10 – ARD overload | (1) Check whether battery wiring is correct;(2) Check whether correct 48V battery type is used;(3) Replace battery if battery life has deteriorated;(4) Check for prolonged operation or excessive ambient temperature |
| ARD Fault | Subcode 4–7 – ARD battery fault | (1) Check whether battery charge level is within normal range;(2) Check battery voltage;(3) Contact manufacturer |
| ARD Fault | Subcode 11 – ARD bus overvoltage | (1) Check whether grid voltage is normal and whether incorrect 380V wiring exists;(2) Contact manufacturer |
| ARD Fault | Subcode 12 – ARD bus undervoltage | (1) Restart the control cabinet. If fault persists, inspect cabinet condition;(2) Check whether K4 main relay is sticking;(3) Check whether K2 inverter relay is sticking;(4) Check whether K1 brake release relay is sticking |
| ARD Fault | Subcode 13 – ARD inverter overvoltage | Check ARD inverter circuit |
| ARD Fault | Subcode 31 – Lithium battery low-level warning | (1) Check whether lithium battery is damaged;(2) Recharge battery if excessively discharged |
| Door Lock Fault Classification | Level 2B fault without bypass enabled; Level 5A fault with bypass enabled | Check whether bypass logic and door lock protection strategy are configured correctly |
| Continuous Door Opening Failure | Door opening does not reach fully open position continuously beyond FB-13 limit | (1) Check door operator system performance;(2) Check car top control board status;(3) Check door-open limit signal |
| Continuous Door Closing Failure | Door closing does not reach fully closed position continuously beyond FB-13 limit | (1) Check door operator system performance;(2) Check car top control board status;(3) Check door lock operation |
| Long-Term Elevator Runtime Warning | Elevator operating time exceeds maintenance threshold | Elevator requires inspection and preventive maintenance |
| Brake Feedback Signal Inconsistency | Left and right brake feedback signals inconsistent | Check brake monitoring switches, brake clearance, and monitoring circuit wiring |
| Hall and Car Door Lock State Mismatch | Hall door lock status inconsistent with car door lock status | Check door lock feedback circuits and synchronization logic |
| Leveling Sensor Signal Flicker | Leveling sensor signal unstable due to interference or installation error | (1) Check insert plate installation alignment;(2) Check sensor mounting distance;(3) Check for electrical interference from power cables |
| Encoder Signal Interference | Encoder analog or pulse signal unstable | (1) Route encoder cable separately from power cables;(2) Verify shield grounding at one end only;(3) Check PG card connections;(4) Improve grounding quality |
| Excessive Mechanical Resistance | Brake drag, guide shoe friction, or mechanical jamming increases system load | (1) Check brake release condition;(2) Inspect guide shoe clearance;(3) Inspect traction system and moving components for jamming |
| Traction Rope Slippage | Rope slipping during leveling or operation | (1) Check traction sheave condition;(2) Check rope tension balance;(3) Check load balancing and brake force |
| Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|
| Emergency Rescue Timeout | Emergency rescue operation exceeds configured rescue duration | (1) Check whether rescue power supply capacity matches system requirements;(2) Check emergency operation speed configuration;(3) Check whether excessive load or brake drag increases rescue time |
| Encoder Pulse Direction Error | Encoder pulse direction inconsistent with elevator travel direction | (1) Verify whether upward movement increases pulse count and downward movement decreases pulse count;(2) Adjust F5-05 parameter if pulse direction is reversed;(3) Check encoder wiring and motor phase sequence |
| Leveling Insert Plate Installation Error | Insert plate installed too deep, too shallow, tilted, or excessively long | (1) Check vertical alignment of insert plate;(2) Adjust insertion depth;(3) Confirm insert plate dimensions meet controller requirements |
| Leveling Sensor NO/NC Setting Error | Leveling sensor type does not match parameter settings | (1) Check whether leveling sensors use normally open or normally closed configuration;(2) Adjust controller parameters accordingly |
| Brake Relay Sticking | Brake relay contacts remain engaged abnormally | (1) Check relay contact condition;(2) Replace damaged relay;(3) Inspect brake release circuit |
| Main Relay Sticking | Main contactor or relay fails to release | (1) Check main relay contact condition;(2) Inspect control circuit voltage;(3) Replace faulty relay |
| Inverter Relay Sticking | Inverter relay remains engaged abnormally | (1) Check inverter relay operation;(2) Inspect relay coil voltage;(3) Replace damaged relay |
| Excessive Re-Leveling Time | Re-leveling operation takes longer than expected | (1) Check leveling speed setting;(2) Check leveling sensor feedback;(3) Check encoder feedback stability |
| Door Zone Signal Loss | Door zone signal disappears during operation | (1) Check door zone sensor wiring;(2) Check sensor alignment and installation position;(3) Check for electrical interference |
| Door Zone Signal Sticking | Door zone signal remains continuously active | (1) Check sensor wiring and NO/NC settings;(2) Inspect sensor mounting position;(3) Eliminate signal interference |
| Hall Call Board Address Conflict | Duplicate hall call board addresses detected | (1) Check physical address settings of all hall call boards;(2) Reconfigure duplicated addresses;(3) Restart communication system after correction |
| Communication Interference | Strong electrical interference affects CAN, SPI, or MODbus communication | (1) Separate communication cables from power cables;(2) Improve shielding and grounding;(3) Reduce interference sources near communication lines |
| Inspection Switch Disconnection | Inspection switch disconnected during operation or shaft learning | (1) Check inspection switch wiring;(2) Confirm inspection mode remains active during maintenance operations |
| Guide Shoe Excessive Friction | Guide shoe clearance too tight | (1) Adjust guide shoe clearance;(2) Inspect guide rail lubrication condition;(3) Check for rail deformation |
| Brake Not Fully Released | Brake remains partially engaged during operation | (1) Check brake coil voltage;(2) Check brake mechanical linkage;(3) Adjust brake clearance |
| Mechanical Jamming | Mechanical resistance prevents normal elevator movement | (1) Inspect traction system and moving components;(2) Check guide rails, counterweight system, and traction machine;(3) Eliminate foreign objects or mechanical obstruction |
| Power Supply Instability | Voltage fluctuation or temporary power interruption | (1) Check building power supply quality;(2) Tighten all input terminals;(3) Install voltage stabilization equipment if necessary |
| Excessive Floor Spacing | Large floor spacing causes abnormal shaft learning or re-leveling behavior | (1) Increase shaft learning speed if necessary;(2) Adjust re-leveling timing parameters;(3) Confirm F9-02 timeout setting is appropriate |
| Emergency Power Supply Mismatch | Emergency power system capacity insufficient | (1) Check emergency battery and inverter capacity;(2) Match emergency system specifications with elevator load requirements |
| Thermal Protection Relay Fault | Thermal protection relay activates incorrectly or fails | (1) Check thermal relay calibration;(2) Replace faulty thermal relay;(3) Inspect motor cooling condition |
| Brake Friction Pad Wear | Excessive brake pad wear reduces braking performance | (1) Inspect brake pad wear condition;(2) Replace worn friction pads;(3) Perform brake torque testing after replacement |
| Inconsistent Redundant Feedback Signals | Multiple redundant safety or feedback signals do not match | (1) Check redundant signal wiring;(2) Verify NO/NC configuration consistency;(3) Replace faulty feedback contacts or switches |
| Electrical Ground Fault | Ground leakage or insulation breakdown in control or motor circuit | (1) Inspect cable insulation;(2) Check motor winding insulation resistance;(3) Eliminate grounding points |
| PG Card Wiring Fault | PG card wiring abnormal or loose | (1) Check PG card connector seating;(2) Check encoder interface wiring;(3) Replace damaged PG card if necessary |
| Rescue Mode Signal Abnormality | Rescue operation signals remain invalid or inconsistent | (1) Check rescue control logic;(2) Check rescue speed settings;(3) Inspect emergency operation relays and feedback circuits |
| Control Board Hardware Fault | Main control board or drive board hardware abnormality | Contact distributor or manufacturer for inspection or replacement |
| Fault Description | Cause of Fault | Solution / Countermeasure |
|---|---|---|
| Excessive Bus Voltage Rise | DC bus voltage rises too quickly during operation | (1) Check whether brake resistor operates normally;(2) Check brake unit operation;(3) Verify resistor selection and resistance value;(4) Check balance coefficient |
| Brake Resistor Wiring Fault | Brake resistor wiring loose, grounded, or damaged | (1) Tighten all brake resistor terminals;(2) Check insulation condition;(3) Replace damaged wiring |
| Severe Electrical Interference | Strong electrical noise affects encoder, communication, or feedback signals | (1) Separate signal cables from power cables;(2) Improve cabinet grounding;(3) Use shielded cables with single-end grounding |
| Brake Coil Circuit Fault | Brake coil power supply abnormal or brake coil damaged | (1) Check brake power supply voltage;(2) Check brake coil resistance;(3) Replace damaged brake coil |
| Door Operator System Abnormality | Door operator cannot complete opening or closing cycle correctly | (1) Check door operator motor and controller;(2) Check door transmission mechanism;(3) Check door limit signals |
| Door Open Position Signal Error | Door-open limit signal invalid or unstable | (1) Check door-open sensor wiring;(2) Check sensor mounting position;(3) Check signal parameter settings |
| Door Closed Position Signal Error | Door-closed limit signal invalid or unstable | (1) Check door-closed sensor wiring;(2) Check door lock operation;(3) Check signal logic settings |
| Hall and Car Door Signal Separation Fault | Hall door and car door lock monitoring states inconsistent | (1) Check separate door lock signal wiring;(2) Verify signal logic consistency;(3) Replace faulty door lock contacts if necessary |
| Brake Monitoring Switch Fault | Brake monitoring microswitch damaged or misaligned | (1) Check microswitch mechanical operation;(2) Adjust switch position;(3) Replace damaged switch |
| Controller Parameter Mismatch | Controller parameter settings do not match actual hardware configuration | (1) Verify encoder type settings;(2) Verify NO/NC signal configuration;(3) Verify motor parameters and floor configuration |
| Incorrect Emergency Speed Setting | Emergency operation speed exceeds safe operating range | (1) Reduce emergency speed settings;(2) Verify emergency control parameters |
| Inspection Mode Logic Error | Inspection operation logic conflicts with normal operation logic | (1) Check inspection switch status;(2) Check inspection signal wiring;(3) Verify inspection operation parameters |
| Traction Machine Brake Mechanical Sticking | Brake mechanical components jam and prevent normal brake release or closure | (1) Inspect brake mechanical linkage;(2) Lubricate moving components if necessary;(3) Replace worn mechanical parts |
| Encoder Mounting Instability | Encoder shaft coupling loose or unstable during operation | (1) Tighten encoder coupling;(2) Check shaft concentricity;(3) Replace damaged coupling components |
| Brake Torque Insufficient | Brake holding force cannot meet system requirements | (1) Check brake spring pressure;(2) Check brake friction pad wear;(3) Perform brake torque test again |
| Overlong Door Opening Time | Door opening duration exceeds protection threshold | (1) Check door operator speed;(2) Inspect door track and rollers;(3) Check door-open signal feedback |
| Overlong Door Closing Time | Door closing duration exceeds protection threshold | (1) Check door operator torque and speed;(2) Check door sill for debris or obstruction;(3) Check door lock engagement |
| Elevator Slip During Operation | Elevator car movement inconsistent with commanded position | (1) Check traction rope tension;(2) Check traction sheave wear;(3) Check brake holding force |
| Incorrect Floor Parameter Configuration | Maximum or minimum floor parameters inconsistent with actual building configuration | (1) Verify F6-00 and related floor parameters;(2) Perform shaft learning again if necessary |
| Overspeed Protection Triggered | Elevator exceeds allowable operating speed | (1) Check encoder feedback;(2) Retune motor parameters;(3) Check speed loop settings |
| Rescue Relay Fault | Emergency rescue relay operation abnormal | (1) Check relay contacts and coil voltage;(2) Replace faulty rescue relay |
| Analog Signal Input Fault | Analog weighing or sensor signal disconnected or unstable | (1) Verify analog input channel selection;(2) Check analog wiring connections;(3) Check sensor output stability |
| Hall Call Board Communication Loss | Hall call boards fail to communicate with controller | (1) Check communication wiring;(2) Check 24V power supply;(3) Verify address settings |
| Main Control Board Clock Battery Failure | RTC battery depleted or disconnected | (1) Replace RTC battery;(2) Reset controller clock settings |
| Inverter Current Limiting Fault | Current limiting function repeatedly activated | (1) Reduce system load;(2) Check acceleration and deceleration curves;(3) Check inverter parameters |
| Excessive Motor Current During Startup | Startup current exceeds rated limit | (1) Reduce startup load;(2) Check motor UVW phase sequence;(3) Check brake release condition |
| Motor Phase Sequence Error | Motor rotation direction inconsistent with command direction | (1) Swap motor phase sequence;(2) Verify encoder direction feedback |
| Signal Grounding Fault | Signal grounding unstable or improperly connected | (1) Improve signal grounding quality;(2) Separate signal and power grounding paths |
| Excessive Encoder Signal Fluctuation | Encoder signal unstable due to interference or poor connection | (1) Check shield grounding;(2) Replace damaged encoder cable;(3) Reduce interference sources |
| Safety Feedback Signal Mismatch | Safety feedback signals inconsistent with controller expectations | (1) Verify NO/NC parameter settings;(2) Check safety contact wiring;(3) Replace damaged safety switches |
| Brake Release Delay | Brake does not release within expected timing | (1) Check brake relay timing;(2) Check brake coil voltage response;(3) Inspect brake mechanical components |
| Fault Requires Manual Reset | Certain safety faults remain latched after power reset | Manually reset the fault after eliminating the root cause and confirming safe operation |
