Inovance SV660P Drive

Inovance SV660P Drive Fault Codes:

Fault Code and Meaning	Cause and Remedy
Er.101 Internal parameter error	Cause: The total number of parameters changed (usually after software update) or values in group H02 exceed limits. Remedy: Restore system parameters to default settings (H02-31 = 1) and write parameters again. Check control circuit voltage (L1C, L2C). If voltage drops, increase power supply capacity. Check for instantaneous power failure during parameter saving; retry power on and restore defaults. If write operations exceed limit, change the write mode. Reset the servo drive/motor model and restore system parameters to default. If the fault persists after power cycling and restoring defaults, replace the servo drive.
Er.102 Programmable logic configuration fault	Cause: FPGA and MCU software versions do not match, or hardware (FPGA/MCU) is damaged. Remedy: View MCU (H01-00) and FPGA (H01-01) versions. Contact Inovance technical support to update software to match. If fault persists after power cycling multiple times, replace the servo drive.
Er.104 Programmable logic interrupted	Cause: Access to MCU or FPGA timed out. (Internal fault codes viewable in H0B-45). Remedy: Check internal codes: FPGA faulty (Er.104), Handshaking abnormal (Er.100), or Timeout (Er.940). If the fault persists after the servo drive is powered off and on several times, replace the servo drive.
Er.105 Internal program error	Cause: EEPROM read/write count abnormal or parameter range abnormal (after software update). Remedy: Restore system parameters to default values (H02-31 = 1) and restart the servo drive. If the fault persists after power cycling, replace the servo drive.
Er.108 Parameter storage fault	Cause: Parameter values cannot be written to or read from EEPROM. Remedy: Modify a parameter, power cycle, and check if saved. If modification is not saved and fault persists, replace the servo drive.
Er.120 Product model mismatch	Cause: The rated current of the motor is higher than that of the servo drive, or product codes do not exist/match. Remedy: If motor code is unknown, set H00-00 to 14101 (for SV660P and 23-bit motor). If servo drive model is unknown, set the model correctly according to the nameplate. Replace the unmatched products (Drive or Motor) to ensure compatibility.
Er.121 S-ON command invalid	Cause: A redundant S-ON signal is sent when some auxiliary functions are used. Remedy: Check auxiliary functions (H0D-02, H0D-03, H0D-12). Deactivate the DI assigned with FunIN.1 (both hardware DI and virtual DI).
Er.122 Product mismatch in absolute position mode	Cause: Motor does not match absolute position mode or motor code set improperly. Remedy: Reset H00-00 (Motor code) according to the motor nameplate. Replace with a matching motor configured with a multi-turn absolute encoder.
Er.130 Different DIs assigned with the same function	Cause: Different DIs (hardware/virtual) assigned same function, or DI function No. exceeds limit. Remedy: Assign different DI function numbers to parameters in groups H03 or H17. Restart control circuit or toggle S-ON/RESET. Restore system parameters to default values (H02-31 = 1) and restart the servo drive. If importing parameters via software, modify H03-10 through software, then set H03-02.
Er.136 Data check error or no parameter saved in motor ROM	Cause: Servo drive reads inconsistent parameters from encoder ROM or ROM is empty. Remedy: Set H00-00 (Motor code) to 14101 if using SV660P with 23-bit absolute encoder. Use the encoder cable provided by Inovance. Ensure secure connections and proper grounding. Route encoder cables separately from power cables (UVW). If the fault persists after restart, replace the servo drive.
Er.201 Overcurrent 2	Cause: Hardware overcurrent is detected. Remedy: Check for short circuits in motor wiring or UVW cables. Check if the motor insulation is damaged. (Refer to detailed hardware manual for further overcurrent diagnostics).
Er.201 Overcurrent 2	Cause: Hardware overcurrent is detected. Remedy: Check for short circuits in the motor wiring. Check if the motor insulation is damaged. Refer to the hardware guide for specific overcurrent troubleshooting. If fault persists immediately upon power up, replace the servo drive.
Er.207 D/Q-axis current overflow	Cause: Abnormal current feedback leads to overflow of the internal register, or abnormal encoder feedback leads to internal register fault. Remedy: Power off and on several times. If the fault persists after restarting, the servo drive is faulty; replace the servo drive.
Er.208 FPGA system sampling operation timeout	Cause: Find the fault cause through internal fault code H0B-45. H0B-45 = 1208: MCU communication timeout. H0B-45 = 2208: Encoder communication timeout. H0B-45 = 3208: Current sampling timeout. Remedy: If H0B-45 = 1208: The internal integrated circuit is damaged. Replace the servo drive. If H0B-45 = 2208: Check encoder cable connection (loose or improper). Check for interference. Route cables separately. Replace encoder cable or servo motor if necessary. If H0B-45 = 3208: Check for ambient devices generating disturbances. Route high-current cables away from low-current cables. Replace servo drive. If H0B-45 = 0208: See solutions above.
Er.210 Output short-circuited to ground	Cause: An abnormal motor phase current or bus voltage is detected during auto-inspection upon power-on. Possible specific causes: – DC bus voltage exceeds discharge threshold. – Phase-U current (Sizes C, D, E) exceeds limit. – Overcurrent on Phase-P or Phase-N (Sizes A, B). Remedy: Disconnect motor cables and measure if servo drive power cables (U/V/W) are short-circuited to ground (PE). Re-connect or replace cables. Check motor insulation resistance (U/V/W to PE). Replace motor if insulation is poor (MΩ level). Disconnect power cables; if fault persists after power cycling, replace the servo drive. Check if motor is in generating status during power-on; reduce motor speed.
Er.220 Phase sequence incorrect	Cause: The UVW phase sequence of the servo drive does not match that of the motor, which is detected during angle auto-tuning. Remedy: Perform wiring checks on U, V, W terminals. Perform angle auto-tuning again.
Er.234 Runaway	Cause: Torque reference direction is opposite to speed feedback, or speed feedback is opposite to speed reference. Remedy: Wiring Issue: Check U/V/W cables are connected in the correct sequence. Connect them correctly. Interference: If caused by interference signal on initial phase detection, power off and on again. Encoder Issue: Check if encoder model matches (H00-00). Check wiring. Replace mutually-matching servo drive/motor. Encoder Cable: Check for aging/corrosion/loose connection. Re-solder or replace cable. Vertical Load: If gravity load is too large, lighten the load, increase stiffness, or adjust brake parameters (H02-09…H02-12). Note: Set H0A-12 to 0 to hide runaway fault in specific vertical axis applications.
Er.400 Main circuit overvoltage	Cause: The DC bus voltage between terminals P(+) and N(-) exceeds the overvoltage threshold. (220V Drive: >420V / 380V Drive: >760V). Remedy: Input Voltage: Measure if input voltage is too high (allowable: -10% to +10%). Adjust power supply. Unstable Supply: If affected by lightning/instability, connect surge protection device. Regenerative Resistor (Built-in): If H02-25=0, check jumper between P(+) and D. Measure resistance between C and D. Replace drive if faulty. Regenerative Resistor (External): If H02-25=1 or 2, check connection between P(+) and C. ensure resistance/power settings (H02-26, H02-27) match specifications. Braking Energy: If motor is in abrupt deceleration, increase the deceleration time if operation conditions allow.
General Power Supply & Hardware Troubleshooting	Cause: The voltage input to the main circuit is too high. The power supply is unstable or affected by lightning. The regenerative resistor fails (internal or external). Resistance of external regenerative resistor is too large. Motor is in abrupt acceleration/deceleration status. Remedy: Measure input voltage (220V drive: 198V-264V; 380V drive: 342V-484V). Connect a surge protection device. If built-in resistor used (H02-25=0): Check jumper between P⊕ and D. If external resistor used: Check connection P⊕ and C; ensure H02-26/H02-27 match specifications. Increase acceleration/deceleration time if operating conditions allow.
Er.410 Main circuit undervoltage	Cause: The DC bus voltage is lower than the undervoltage threshold (200V for 220V drive; 380V for 380V drive). Power supply unstable or power failure occurs. Instantaneous power failure. Voltage drops due to insufficient power capacity when other devices start. Phase loss: 3-phase drive connected to single-phase supply. Servo drive is faulty (bus voltage sampling deviation). Remedy: Measure input voltages; ensure they are within allowable deviation (-10% to +10%). Increase the capacity of the power supply. Check wiring; ensure phase loss protection (H0A-00) is set correctly. Connect cables correctly (Single-phase: L1, L2; Three-phase: L1, L2, L3). Check H0B-26 (Bus voltage); if fault persists after power cycle, replace servo drive.
Er.430 Control circuit undervoltage	Cause: Control circuit power supply (L1C, L2C) unstable or power failure. Control circuit cable is in poor contact. Remedy: Power off and on again; ensure stable power supply. Check input voltage of control circuit cable. Re-connect or replace the control circuit cables.
Er.500 Overspeed	Cause: The actual speed of the motor exceeds the overspeed threshold. UVW phase sequence of motor cable is wrong. H0A-08 (Overspeed threshold) is set improperly. Input reference frequency exceeds limit (Position/Speed modes). Motor speed overshoots significantly. Servo drive is faulty. Remedy: Connect U/V/W cables in the correct phase sequence. Reset overspeed threshold (H0A-08) according to mechanical requirements. Reduce pulse reference frequency or electronic gear ratio. Perform gain auto-tuning or adjust operating conditions. Replace servo drive if fault persists after power cycle.
Er.510 Pulse output overspeed	Cause: The output pulse frequency exceeds the hardware limit (2 MHz) when pulse output is used (H05-38 = 0 or 1). Encoder frequency-division causes high output frequency. Interference/Noise on pulse input pins. Remedy: Decrease H05-17 (Encoder frequency-division pulses). Decrease input pulse frequency. Take anti-interference measures (use STP cable, set pin filters H0A-24/H0A-30).
Er.600 Inertia auto-tuning failure	Cause: Vibration cannot be suppressed. Auto-tuned values fluctuate dramatically. Mechanical couplings are loose or eccentric. Load inertia is too large. Remedy: Set notch parameters (H09-12…H09-23) manually. Increase max operating speed, reduce accel/decel time, shorten stroke during ETune. Rectify mechanical faults (couplings). Increase accel/decel time to ensure motor current is unsaturated.
Er.602 / Er.605 / Er.610 Various Auto-tuning/Load Faults	Cause: Er.602: Angle auto-tuning failure. Er.605: Bootstrap speed too fast (exceeds rated speed during charging). Er.610: Servo drive overload (accumulative heat reaches threshold). Remedy: Retry auto-tuning or check mechanical constraints. For overload: Check load conditions and cooling (see Er.620 for detailed overload remedies).
Er.620 Motor overload	Cause: Accumulative heat of the motor reaches fault threshold. Motor/Encoder cables connected improperly. Load is too heavy (Effective torque > rated torque). Accel/Decel too frequent. Gains improper or stiffness too high (vibration/noise). Drive/Motor model set improperly (H00-05 / H01-02). Motor stalls due to mechanical factors. Remedy: Connect cables according to correct wiring diagram. Replace with higher capacity drive/motor or reduce load. Increase acceleration/deceleration time. Adjust gain values (see “Adjustment” chapter). Set motor code (H00-05) and drive model (H01-02) correctly. Eliminate mechanical stall factors.
Overload / Thermal Fault Accumulative heat reaches threshold	Cause: The accumulative heat of the motor reaches the fault threshold. Remedy: Connect cables according to the correct wiring diagram. Use cables provided by Inovance or customized shielded cables. Replace with a servo drive of higher capacity and a matching servo motor. Reduce the load and increase the acceleration/deceleration time. Adjust gain values if stiffness is too high. Set motor code (H00-05) and drive model (H01-02) correctly. Eliminate mechanical factors causing stalls. Replace the servo drive if the fault persists after power cycle.
Er.630 Motor stall over-temperature protection	Cause: The actual motor speed is lower than 10 RPM but the torque reference reaches the limit, and such status lasts for the time defined by H0A-32. Remedy: Check UVW phase sequence; connect cables according to the correct wiring diagram. Check for disconnected UVW or encoder cables; replace cables if necessary. Eliminate mechanical factors causing the stall.
Er.640 Junction temperature too high	Cause: The temperatures of the IGBT and diodes reach the over-temperature threshold (H0A-38). Remedy: Improve cooling conditions to lower ambient temperature. Wait for 30s before resetting after overload occurs. Increase the capacities of the servo drive and servo motor. Increase acceleration/deceleration time and reduce the load. Replace servo drive if the fan is damaged. Install servo drive according to installation requirements (proper clearance). Replace the servo drive if fault persists 5 mins after power off.
Er.650 Heatsink over-temperature	Cause: The temperature of the servo drive power module is higher than the over-temperature threshold. Remedy: Improve cooling conditions to lower ambient temperature. Wait for 30s before resetting after overload occurs. Increase the capacities of the servo drive and servo motor. Increase acceleration/deceleration time and reduce the load. Check if fan works properly; replace drive if damaged. Ensure drive is installed with correct clearance/direction. Check if H01-02 matches nameplate; set valid drive code. Replace the servo drive.
Er.660 Vibration too strong	Cause: The vibration is too strong or lasts for too long. The set resonance point will be cleared when Er.660 occurs. Remedy: Set H08-58 to 1 to hide warnings caused by excessively strong vibration. Set H08-58 to 2 to hide warnings caused by excessively strong and lasting vibration.
Er.661 Gain values too low	Cause: Vibration cannot be suppressed, excessive overshoot, noise in command, or current fluctuation. Remedy: Enable vibration suppression manually. Increase acceleration/deceleration time and reduce response level if overshoot occurs. Modify electronic gear ratio or increase command filter time constant (noise issues). Check if machine current fluctuates periodically. Increase acceleration/deceleration time if load inertia is large.
Er.666 Runaway	Cause: A runaway fault occurs. (e.g., mismatch of inertia H09-26, short acc/dec time, loose couplings). Remedy: You can hide this fault by setting H0A-02 to 1. Adjust inertia settings or acc/dec time. Check mechanical couplings.
Er.668 Homing method improper	Cause: The homing method does not match the set mode. Remedy: Change value of H00-00 to 14101 and H02-01 to 0 if unsupported. Set H05-30 to a value representing electrical homing. Change the homing method defined by H05-31.
Er.731 Encoder battery failure	Cause: The voltage of the absolute encoder battery is lower than 3.0 V. Remedy: Set H0D-20 (Absolute encoder reset selection) to 1 to clear fault. Check connection or use a new battery with matching voltage.
Er.733 Encoder multi-turn counting error	Cause: An encoder multi-turn counting error occurs. Remedy: Set H0D-20 to 1 to clear fault; if it persists after power cycle, replace the motor.
Er.735 Encoder multi-turn counting overflow	Cause: The servo drive detects that the multi-turn counting value of the encoder overflows. Remedy: Set H0D-20 (Absolute encoder reset selection) to 1 to clear fault. Perform a power cycling on the servo drive.
Er.740 Encoder interference	Cause: The encoder Z signal suffers from interference, resulting in a significant change of the electrical angle. Remedy: Connect encoder cables according to correct wiring diagram. Re-connect encoder cables securely; check for vibration loosening. Use shielded twisted pair cables provided by Inovance. Ensure motor and drive are grounded properly. Route motor and encoder cables through different routes. Check connectors for good contact/pin retraction. Replace with a new encoder cable. Replace the servo motor if fault persists.
Er.A33 Encoder data error	Cause: Encoder parameters are abnormal. Remedy: Check for wrong connection, disconnection, or poor contact of encoder cable. Route motor cable and encoder cable through different routes. Replace the servo motor if fault persists after power cycling.
Er.B00 Position deviation too large	Cause: The position deviation in the position control mode is larger than the setpoint of H0A-10. Remedy: Check threshold of excessive position deviation settings. (Specific remedy steps cut off in source documentation).
Er.A33 Encoder data error	Cause: Encoder parameters are abnormal. Specific scenarios: The serial encoder cable is disconnected or loose. An error occurs when reading/writing serial encoder parameters. Remedy: Check for wrong connection, disconnection, and poor contact of the encoder cable. Route the motor cable and encoder cable through different routes. If the fault persists after power cycling several times, replace the servo motor.
Er.B00 Position deviation too large	Cause: The position deviation in the position control mode is larger than the setpoint of H0A-10 (Threshold of excessive position deviation). Potential causes include: UVW phase loss or incorrect phase sequence. Servo drive UVW cables or encoder cables disconnected. Motor stalls due to mechanical factors. Gain values are too low. Input pulse frequency is too high. Value of H0A-10 is too low for operating conditions. Servo drive or motor is faulty. Remedy: Connect cables again according to the correct wiring diagram. Ensure power cables are connected in correct sequence at both ends. Eliminate mechanical factors blocking the motor. Perform gain auto-tuning or manual tuning. Reduce position reference frequency or electronic gear ratio. Increase the value of H0A-10. If position reference is not 0 but feedback is 0, replace drive or motor.
Er.B01 Pulse input error	Cause: The pulse input frequency is higher than H0A-09 (Maximum position pulse frequency). Specific scenarios: Pulse input frequency is actually higher than H0A-09. The input pulse suffers from interference. Remedy: Reset H0A-09 according to max frequency needed. Decrease host controller pulse output frequency if > 4 MHz. Use shielded twisted pair cables; separate pulse cables from power cables. Check grounding: Connect GND of host to GND (or COM) of servo drive correctly based on input type (differential vs open-collector). Increase filter time (H0A-24 or H0A-30).
Er.B03 Electronic gear ratio beyond the limit	Cause: The electronic gear ratio exceeds the limit ranges. Specific scenarios: The set electronic gear ratio calculation exceeds limits. Parameters (H05-02, H05-07 to H05-13) modified in wrong sequence. Remedy: Set the ratios of encoder resolution to H05-02, H05-07 to H05-09, and H05-11 to H05-13 within valid ranges. Use the fault reset function or perform a power cycle on the servo drive.
Er.D03 CAN communication interrupted	Cause: The CAN communication times out. Specific scenarios: Interrupted due to disconnection of the slave. Interrupted due to disconnection of the master. Remedy: Check connection cables between master and slave. Check communication baud rate (H0C-08) and adjust slave to match master. Check cable connections of the master.
Er.110 Frequency-division pulse output setting error	Cause: The set encoder frequency-division pulses do not match the threshold defined by the encoder specification (when H05-38 = 0). Remedy: Reset H05-17 (Encoder frequency-division pulses) according to the specification. Note: For 23-bit serial incremental encoders, resolution is 8388608 PPR.
Er.601 Homing failure	Cause: The home is not found within the time defined by H05-35. Specific scenarios: The home switch fails (wiring or logic issue). The homing time limit (H05-35) is too short. Speed in high-speed searching (H05-32) is too low. Remedy: Check FunIN.31 (HomeSwitch) settings and wiring. Verify DI level changes in H0B-03. Increase the value of H05-35. Increase the value of H05-32.
Er.730 Encoder battery warning	Cause: The battery voltage of the absolute encoder is lower than 3.0 V. Remedy: Measure battery voltage. Use a new battery with the matching voltage.
Er.900 DI emergency braking	Cause: The logic of the DI assigned with FunIN.34 (EmergencyStop) is active. Remedy: Check operating mode. Clear the active DI braking signal (without affecting safety performance).
Er.909 Motor overload warning	Cause: The accumulative heat of the 60Z series motor reaches the warning threshold. Potential causes: Cables connected improperly or poor contact. Load is too heavy / Torque exceeds rating. Acceleration/deceleration too frequent. Gains improper / stiffness too high. Drive/Motor model set improperly. Locked-rotor due to mechanical factors. Servo drive is faulty. Remedy: Connect cables based on correct wiring diagram. Replace with higher capacity drive/motor or reduce load. Increase acceleration/deceleration time. Perform gain auto-tuning. Check H00-05 and H01-02 to ensure motor/drive codes match nameplate. Rectify mechanical factors causing lock-rotor. Replace the servo drive if fault persists after power cycle.
Er.920 Regenerative resistor overload	Cause: The accumulative heat of the regenerative resistor exceeds the set value. Remedy: Check regenerative resistor specifications and sizing. Ensure adequate cooling for the resistor.
Er.920 Regenerative resistor overload	Cause: The accumulative heat of the regenerative resistor exceeds the set value. Specific scenarios include: External resistor disconnected, loosened, or improperly connected. Jumper between P⊕ and D is shorted/disconnected (when using built-in resistor). Resistor type (H02-25) set improperly. Resistance of external resistor is too large. Input voltage of main circuit exceeds specified range. Remedy: Measure if resistance is “∞”. Replace or reconnect cable between P⊕ and C. Ensure terminals P⊕ and D are jumpered if using built-in resistor. Set H02-25 correctly (1=Natural cooling, 2=Forced-air). Select proper resistor per “Specifications of Regenerative Resistor” in manual. Set H02-27 according to the actual resistance used. Check input voltage (220V drive: 198V-264V; 380V drive: 342V-484V). Adjust power supply. If load inertia is too large: Use larger capacity resistor/drive or increase deceleration time.
Er.922 Resistance of external regenerative resistor too small	Cause: The value of H02-27 (Resistance of external regenerative resistor) is lower than H0A-21 (Permissible minimum resistance). Remedy: Measure resistance of external resistor between P⊕ and C. If smaller than H0A-21: Replace with resistor matching the servo drive. If valid: Set H02-27 to a value consistent with the actual resistance.
Er.924 Braking transistor over-temperature	Cause: The estimated temperature of the braking transistor is higher than H0A-38 (Maximum protection threshold). Remedy: Check drive cooling and ventilation. Reduce start/stop frequency. Contact Inovance technical support if fault persists.
Er.939 Motor power cable disconnected	Cause: Actual phase current is <10% of rated current, motor speed is low, but internal torque reference is high (>500% difference). Remedy: Re-connect the motor power cables. Replace with new cables if necessary.
Er.941 Parameter modifications activated at next power-on	Cause: Modifications of some parameters take effect only at next power-on (Effective time = “Next power-on”). Remedy: Power off and on the servo drive again.
Er.942 Parameter saved frequently	Cause: The number of parameters modified at a time exceeds 200, or saved to EEPROM (H0C-13=1) at a brief interval. Remedy: Check operating mode. For parameters that need not be saved to EEPROM, set H0C-13 to 0.
Er.950 Forward overtravel warning	Cause: The logic of DI assigned with FunIN.14 (P-OT, positive limit switch) is active. Position feedback (H0B-17) reached positive software position limit (H0A-41). Remedy: Send a reverse run command or rotate motor to deactivate the P-OT logic. Ensure references allow load travel range to be within software position limit range.
Er.952 Reverse overtravel warning	Cause: The logic of DI assigned with FunIN.15 (N-OT, negative limit switch) is active. Position feedback (H0B-17) reached negative software position limit (H0A-43). Remedy: Send a forward run command or rotate motor to deactivate the N-OT logic. Ensure references allow load travel range to be within software position limit range.
Er.980 Encoder fault	Cause: An encoder algorithm error occurs. Remedy: If fault persists after powering off/on several times, replace the servo motor.
Er.990 Power input phase loss	Cause: A three-phase servo drive (below 1 kW) is running under single-phase power, but H0A-00 is set to 1 (Enabled). Remedy: If using 3-phase supply: Check wiring/fuses (Handle as Er.420). If using single-phase supply intentionally: Set H0A-00 (Power input phase loss selection) to 0.
Er.994 CAN address conflict	Cause: The CANlink address conflict occurs (H0C-00 allocated repetitively). Remedy: Allocate a unique address for each slave. Ensure H0C-00 is not allocated repetitively.