Toshiba Q9+ Plus Drives

Toshiba Q9+ Plus Drives Fault Codes:

Fault Code and MeaningCause and Remedy
Atn
Autotune Active
Cause:
  • Autotune function is active.



Remedy:
  • Information only; wait for completion.
nErr
No Error
Cause:
  • No active errors.



Remedy:
  • None required.
LOFr
Virtual Linear Pump Low Frequency
Cause:
  • Virtual Linear Pump function is operating at the Low-Frequency Limit setting.



Remedy:
  • Information only.
Pump
Virtual Linear Pump On
Cause:
  • Virtual Linear Pump function is enabled and active.



Remedy:
  • Information only.
4-20 mA
4-20 Signal Loss
Cause:

  • Misconnection, poor connection, or broken wire.

  • Improper programming at F201 and associated parameters.




Remedy:

  • Check wiring and connections.

  • Verify parameter F201 settings.
*OL1
ASD Overload
Cause:

  • Carrier frequency is too high.

  • Excessive load.

  • Acceleration time is too short.

  • DC damping rate is too high.

  • Motor is starting into a spinning load after a momentary power failure.

  • ASD is improperly matched to the application.




Remedy:

  • Reduce carrier frequency or load.

  • Increase acceleration time.

  • Check DC damping settings.
CM1
Comm Error Interruption
Cause:

  • Improperly programmed ASD.

  • Improper communications settings.




Remedy:

  • Verify ASD programming and communication settings.
CM2
Comm Error 2
Cause:
  • Improperly connected cables.



Remedy:
  • Check communication cables and connections.
DAMP
Damper Closed
Cause:
  • Improper configuration/programming for Damper Control at discrete input terminals.



Remedy:
  • Check Damper Control configuration.
*OP
DC Bus Over-Volts
Cause:

  • ASD is attempting to start into a spinning motor after a momentary power loss.

  • Incoming commercial power voltage level is above the specified range.

  • Deceleration time is too short.

  • Voltage spikes at the 3-phase input.

  • Over-Voltage Stall feature is turned off.

  • System is regenerating / Load fluctuations.




Remedy:

  • Install inductive filter if spikes are present.

  • Increase deceleration time.

  • Enable Over-Voltage Stall feature.
*POFF
DC Under-Volts
Cause:

  • Defective control board.

  • Excessive load on power supply.

  • Low input voltage.




Remedy:

  • Check input voltage.

  • Check for excessive load.
E
Emergency Off
Cause:

  • Stop-Reset was pressed twice at the EOI.

  • E-OFF command was received remotely.




Remedy:

  • Reset the system.
HLd
Heavy Load
Cause:

  • Acceleration time is too short.

  • ASD is improperly matched to the application.

  • Excessive load.




Remedy:

  • Increase acceleration time.

  • Verify drive sizing for the load.
LLd
Light Load
Cause:
  • ASD is improperly matched to the application.



Remedy:
  • Verify drive sizing.
LLt
Lower Limit Time
Cause:
  • Lower-Limit Time reached.



Remedy:
  • Parameter F256 adjustment is required.
MOFF
Main Under-Volts
Cause:

  • 3-phase input voltage low.

  • Defective control board.

  • Excessive load on power supply.




Remedy:

  • Under-Voltage/Ridethrough settings require adjustment.
OLM
Motor Overload
Cause:

  • V/f setting requires adjustment.

  • Motor is locked.

  • Continuous operation at low speed.

  • Motor is improperly matched to the load.




Remedy:

  • Adjust V/f settings.

  • Check for mechanical binding/locking.
OC
Over-Current
Cause:

  • Phase-to-phase short (U/T1, V/T2, or W/T3).

  • Defective IGBT.

  • ASD output to the motor is connected incorrectly.

  • ASD is attempting to start into a spinning motor.

  • Motor/machine is jammed.

  • Mechanical brake engaged while ASD is running.

  • Acceleration/deceleration time is too short.

  • Voltage Boost setting is too high.

  • V/f setting adjustment is required.




Remedy:

  • Check motor and cabling for shorts.

  • Adjust Acceleration/Deceleration times.

  • Check mechanical brakes and load.
*OH
Over-Heating
Cause:

  • ASD is operating at an elevated temperature.

  • ASD is too close to heat-generating equipment.

  • Cooling fan vent is obstructed.

  • Cooling fan is inoperative.

  • Internal thermistor is disconnected.




Remedy:

  • Check cooling fans and vents.

  • Ensure proper ambient temperature and clearance.
Ot
Over-Torque
Cause:

  • ASD is improperly matched to the application.

  • Parameter F616 or F617 setting is too low.

  • Obstructed load.




Remedy:

  • Adjust parameters F616 or F617.

  • Check for load obstructions.
LtA
Part Replace
Cause:
  • Part Replacement Alarm at F634 timed out.



Remedy:
  • Perform required maintenance and reset timer.
OJ
Run-Time Counter
Cause:
  • User-Set Run-Time Counter Exceeded.



Remedy:
  • Type Reset is required; select Clear run timer.
OLSt
Soft Stall
Cause:
  • Overload Soft Stall Active.



Remedy:
  • Soft Stall selection adjustment is required (F017).
PtC
Thermal Err
Cause:
  • Option Thermal Sensor Threshold Exceeded.



Remedy:
  • User-set thermal threshold setting of F646 is exceeded.
UC
Under-Current
Cause:
  • Output Current of the ASD is Below the Level Defined at F611.



Remedy:

  • Disable detection at F610.

  • Parameter F611 adjustment is required.
E-19
Abnormal CPU2
Cause:
  • Abnormal CPU2 Communication.



Remedy:
  • Service call is required.
E-18
Analog Input Loss
Cause:

  • V/I input terminal configured for operation but the voltage/current input is either missing or low.

  • Over-current at P24.




Remedy:
  • Check analog input signals and P24 connection.
E-10
Analog Input OV
Cause:
  • Analog Input Terminal Over-Voltage.



Remedy:
  • Mis-wire at the ASD input terminals; check wiring.
OL1
ASD Overload (Trip)
Cause:

  • Acceleration time is too short.

  • DC Injection current is too high.

  • V/f setting needs to be adjusted.

  • Motor is running during restart.

  • ASD/motor is improperly matched to the application.




Remedy:

  • Adjust acceleration time or DC Injection settings.

  • Adjust V/f settings.
Err2
ASD RAM Fault
Cause:
  • ASD RAM Fault.



Remedy:
  • Service call is required.
Err3
ASD ROM Fault
Cause:
  • ASD ROM Fault.



Remedy:
  • Service call is required.
EtyP
ASD Type Error
Cause:

  • Firmware information (typeform) loaded into the Application Board is inconsistent with the Motor Control Board.

  • Application Board or Motor Control Board is defective.




Remedy:
  • Service call is required.
E-26
CPU Fault
Cause:
  • CPU Fault.



Remedy:
  • Service call is required.
EEP2, EEP3
Ctrl Read Err
Cause:
  • Initial Read Error (Parameter Initialization).



Remedy:
  • Service call is required.
Err7
Current Err
Cause:

  • Current Detection Hardware Error.

  • Improper low-current detection level setting.

  • Motor (phase) is disconnected.




Remedy:

  • Check motor connections.

  • Check detection level settings.
E-22
Discrete In Volts
Cause:
  • Discrete input terminal configured for operation and the input activation voltage level is out of specification.



Remedy:
  • Check input voltage levels.
EEP1
EEPROM Write Err
Cause:
  • EEPROM Fault (Writing Error).



Remedy:
  • Service call is required.
Etn
Autotuning Err
Cause:

  • Autotune readings are inconsistent with the configuration.

  • Non-3-phase motor is being used.

  • Improper settings at F400 or F410 – F413.

  • Using a motor with significantly smaller rating than ASD.

  • ASD output cabling is too small/long or has EMF interference.

  • Motor is running during Autotune.




Remedy:

  • Verify motor type and ratings.

  • Check parameters F400-F413.
Etn2
Leak Inductance Err
Cause:
  • Autotuning Error — Leak Inductance Error.



Remedy:
  • Improper setting at F412; adjust setting.
Etn3
Motor Rating Err
Cause:
  • Autotuning Error — Motor Rating Error.



Remedy:
  • Improper setting at F405, F406, or F407; adjust settings.
Etn1
Torque Boost Err
Cause:
  • Autotuning Error — Torque Boost Error.



Remedy:
  • Improper setting at F410; adjust setting.
E
Emergency Off (Trip)
Cause:

  • Stop-Reset was pressed twice at the EOI.

  • E-Off command was received remotely.




Remedy:
  • Select stopped method at F603.
E-12
Encoder Loss
Cause:
  • Encoder signal is not received.



Remedy:
  • Check encoder connections.
Err6
Gate Array Fault
Cause:
  • Defective gate array or gate array malfunction.



Remedy:
  • Service call is required.
EF1, EF2
Ground Fault
Cause:

  • Mis-wired ground.

  • Loose ground connection.




Remedy:
  • Check ground wiring and connections.
EPH1
Input Phase Failure
Cause:

  • Mis-wired input phase.

  • Loose input phase connection.




Remedy:
  • Check input phase wiring.
UC
Low-Current (Trip)
Cause:
  • Improper low-current detection level setting.



Remedy:
  • Adjust detection level setting.
Err8
Net Card Err
Cause:

  • Optional device malfunction.

  • Improper system settings (at ASD or optional device).

  • Loose or improper connection.




Remedy:
  • Check network option card settings and connections.
OH2
Option Over-Heat
Cause:
  • Over temperature condition detected by option board.



Remedy:
  • Check PTC1 or PTC2 (see F637 and F638).
EPH0
Output Phase Failure
Cause:

  • Mis-wired output phase.

  • Loose output phase connection.




Remedy:
  • Check output wiring.
OCL
Output Short
Cause:

  • ASD is starting into a rotating motor.

  • Phase-to-phase short (U/T1, V/T2, or W/T3).

  • Acceleration time is too short.

  • Motor/machine is jammed or brake engaged.




Remedy:

  • Short Circuit Detection adjustment is required (F613).

  • Check motor and mechanical systems.
OC1, OC1P
Over-Current Acc
Cause:

  • V/f setting needs to be adjusted.

  • Restart from a momentary power outage.

  • Phase-to-phase short.

  • Acceleration time is too short.




Remedy:

  • Adjust V/f or acceleration settings.

  • Check for shorts.
OC2, OC2P
Over-Current Dec
Cause:

  • Deceleration time is too short.

  • Motor/machine is jammed or brake engaged.




Remedy:

  • Increase deceleration time.

  • Check mechanical system.
OC3, OC3P
Over-Current Run
Cause:

  • ASD/Motor is improperly matched to the application.

  • Load fluctuations.

  • ASD is operating at an elevated temperature.




Remedy:

  • Check load and drive sizing.

  • Check environmental conditions.
E-13
Over-Speed
Cause:

  • Motor speed greater than commanded speed.

  • Improper encoder connection or setup.

  • Defective encoder.




Remedy:
  • Check encoder and speed control settings.
Ot
Over-Torque (Trip)
Cause:
  • Output torque requirement in excess of F616 or F617 settings for longer than F618 setting.



Remedy:
  • Adjust torque limit settings.
OP1
Over-Voltage Acc
Cause:
  • Motor is running during restart.



Remedy:
  • Stop motor before restart or use catch-spin.
OP2
Over-Voltage Dec
Cause:

  • Deceleration time is too short.

  • Stall prevention is disabled.

  • Input reactance is required.




Remedy:

  • Increase deceleration time.

  • Enable stall prevention.
OP3
Over-Voltage Run
Cause:

  • Load fluctuations.

  • 3-phase input voltage out of specification.




Remedy:
  • Check input voltage stability and load.
E-21
Stack Err
Cause:
  • Stack Overflow Error.



Remedy:
  • Service call is required.
SOut
Step-Out (PM)
Cause:
  • Step-Out (For PM Motors Only).



Remedy:
  • Service call is required.
OCA1
U-Phase OC
Cause:
  • U-Phase Over-Current (Low impedance at U/T1 phase).



Remedy:
  • Check motor winding/cabling for short.
OCA2
V-Phase OC
Cause:
  • V-Phase Over-Current (Low impedance at V/T2 phase).



Remedy:
  • Check motor winding/cabling for short.
OCA3
W-Phase OC
Cause:
  • W-Phase Over-Current (Low impedance at W/T3 phase).



Remedy:
  • Check motor winding/cabling for short.