Toshiba H9 Drives

Toshiba H9 Drives Fault Codes:

Fault Code and MeaningCause and Remedy
Atn
Autotune active
Cause: Atn indicates that the Autotune function is active.


Remedy:

  • Notification only; usually momentary under normal conditions.

  • Wait for function to complete.
dbOn
DC Braking
Cause: This code conveys the DC Injection function being carried out.


Remedy:

  • Display shows db when braking.

  • Display shows dbOn when the motor shaft stationary function is being carried out.
CM1
Comm1 Error
Cause: Internal communications error.


Remedy:

  • Improperly programmed ASD.

  • Improper communications settings.

  • Improperly connected cables.
CM2
Comm2 Error
Cause: External communications error.


Remedy:

  • Improperly programmed ASD.

  • Improper communications settings.

  • Improperly connected cables.
E
Emergency Off
Cause: Output signal from the ASD is terminated and a brake may be applied if so configured.


Remedy:

  • Stop|Reset pressed twice at the EOI.

  • EOFF command received remotely.

  • ASD reset required.
MOFF
Main Under-Voltage
Cause: Under-voltage condition at the 3-phase AC input to the ASD.


Remedy:

  • Low 3-phase commercial voltage.
OC
Over-Current
Cause: ASD output current greater than F601 setting.


Remedy:

  • Defective IGBT (U, V, or W).

  • ASD output to the motor is connected incorrectly.

  • ASD output phase-to-phase short.

  • The ASD is starting into a spinning motor.

  • Motor/machine jammed.

  • Mechanical brake engaged while the ASD is starting or while running.

  • Accel/Decel time is too short.

  • Voltage Boost setting is too high.

  • Load fluctuations.

  • ASD operating at an elevated temperature.
OH
Overheat
Cause: ASD ambient temperature excessive.


Remedy:

  • 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.
OJ
Timer
Cause: Run-time counter exceeded.


Remedy:

  • Type Reset required; select Clear run timer.
OLI
ASD Overload
Cause: Load requirement in excess of the capability of the ASD.


Remedy:

  • The carrier frequency is too high.

  • An excessive load.

  • Acceleration time is too short.

  • DC damping rate is set too high.

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

  • The ASD is improperly matched to the application.
OLM
Motor Overload
Cause: Load requirement in excess of the capability of the motor.


Remedy:

  • V/f parameter improperly set.

  • Motor is locked.

  • Continuous operation at low speed.

  • The load is in excess of what the motor can deliver.
OLR
Resistor Overload
Cause: Excessive current at the Dynamic Braking Resistor.


Remedy:

  • Deceleration time is too short.

  • DBR configuration improperly set.
OP
Over-Voltage
Cause: DC bus voltage exceeds specifications.


Remedy:

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

  • Incoming commercial power is above the specified range.

  • Decel time is too short.

  • Voltage spikes at the 3-phase input; install inductive filter.

  • DBR required.

  • DBR resistance value is too high.

  • DBR function is turned off.

  • Over-Voltage Stall feature is turned off.

  • System is regenerating.

  • Load instability.

  • Disable the Ridethrough function (F302).
OT
Over-Torque
Cause: Torque requirement is in excess of the setting of F616 or F617 for a time longer than the setting of F618.


Remedy:

  • ASD is not correctly matched to the application.

  • F616 or F617 setting is too low.

  • Obstructed load.
POFF
Control Under-Voltage
Cause: Under-voltage condition at the 5, 15, or the 24 VDC supply.


Remedy:

  • Defective Control board.

  • Excessive load on power supply.

  • Low input voltage.
PtSt
Reference Point
Cause: Two speed-reference frequency setpoint values are too close to each other.


Remedy:

  • Two speed reference frequency setpoints are too close to each other (increase the difference).
UC
Under-Current
Cause: Output current of the ASD is below the level defined at F611 and remains there for a time longer than the setting of F612.


Remedy:

  • Output current too low.
E-10
Sink/Source Setting Error
Cause: Sink/Source configuration is incorrect.


Remedy:

  • Improperly positioned Sink/Source jumper on the Terminal board or on an option device (see J100).

  • Check Sink/Source configuration.
E-11
Brake Sequence Response Error
Cause: Braking sequence error.


Remedy:

  • F630 is set to a non-zero value.

  • Braking sequence discrete input and output terminals are not setup properly.
E-12
Encoder Signal-Loss Error
Cause: ASD is configured to receive a signal from a shaft-mounted encoder and no signal is being received while running.


Remedy:

  • Disconnection at the Encoder circuit.

  • Motor is stopped and is generating torque via torque limit control.

  • ASD is not configured properly.
E-13
Speed Error
Cause: Result of a motor speed that is greater than the commanded speed when using an encoder for speed control.


Remedy:

  • Improper encoder connection or setup information.

  • Defective encoder.
E-17
Key Failure
Cause: Key failure detected.


Remedy:

  • Same key input for 20 seconds or more.
E-18
Analog (Terminal) Input Loss
Cause: V/I signal loss.


Remedy:

  • Terminal Board failure.

  • P24 over-current condition.

  • F633 setting is too high.
E-19
CPU Communication Error
Cause: CPU data Transmit/Receive error.


Remedy:

  • Check CPU communications.
E-20
V/f Control Error
Cause: Torque processing error.


Remedy:

  • Make service call.
E-21
CPU Processing Error
Cause: Software processed incorrectly.


Remedy:

  • Make service call.
E-22
Logic Input Voltage Error
Cause: Incorrect voltage applied to the discrete input terminals.


Remedy:

  • Check input terminal voltages.
E-23
Optional Expansion Input Terminal Board 1 Error
Cause: Optional Expansion Input Terminal Board 1 is defective.


Remedy:

  • Replace board.
E-24
Optional Expansion Input Terminal Board 2 Error
Cause: Optional Expansion Input Terminal Board 2 is defective.


Remedy:

  • Replace board.
E-25
Stop Positioning Retention Error
Cause: Load movement while stopped.


Remedy:

  • F381 setting is too low.

  • Encoder malfunction.

  • Creep speed is too high.
E-26
CPU2 Fault
Cause: CPU malfunction.


Remedy:

  • Control board malfunction.
E-50 / E-51
Sink/Source Setting Error
Cause: Sink/Source configuration is incorrect.


Remedy:

  • Improperly positioned Sink/Source jumper on the Terminal board or on an option device (see J100).
EEP1
EEPROM Fault
Cause: EEPROM write malfunction.


Remedy:

  • Make a service call.
EEP2 / EEP3
EEPROM Read Error
Cause: EEPROM read malfunction.


Remedy:

  • Make a service call.
EF1 / EF2
(Earth) Ground Fault
Cause: Ground fault at output.


Remedy:

  • Ground fault at the motor.

  • Ground fault at the output of the ASD.

  • Current leakage to Earth Ground.
EPHI
Input Phase Failure
Cause: 3-phase input to the ASD is low or missing at the R, S, or T input terminals.


Remedy:

  • Check input power wiring.
EPHO
Output Phase Failure
Cause: 3-phase output from the ASD is low or missing at the U, V, or W output terminals or at the input to the motor.


Remedy:

  • Check output wiring and motor.
ERR2
RAM Fault
Cause: Internal RAM malfunction.


Remedy:

  • Make a service call.
ERR3
ROM Fault
Cause: Internal ROM malfunction.


Remedy:

  • Make a service call.
ERR4
CPU Fault
Cause: CPU malfunction.


Remedy:

  • Control board malfunction.

  • Make a service call.
ERR5
Communication Error
Cause: Communication time out error or malfunction.


Remedy:

  • Improper or loose connection.

  • Improper system settings.
ERR6
Gate Array Fault
Cause: Main Gate Array is defective.


Remedy:

  • Make a service call.
ERR7
Low-Current
Cause: Improper Low-Current detection level settings.


Remedy:

  • Check settings at F609 – F612.
ERR8
Option Device Fault
Cause: Option device error.


Remedy:

  • Check installation, connections, and option device manual.
ERR9
Flash Memory Fault
Cause: Flash memory malfunction.


Remedy:

  • Make a service call.
ETN
Autotune Error
Cause: Autotune readings that are significantly inconsistent with the configuration information.


Remedy:

  • A non-3-phase motor is being used.

  • Incorrect settings at F400 or F413.

  • Using a motor that has a significantly smaller rating than the ASD.

  • ASD output cabling is too small, too long, or is being housed in a cable tray with other cables that are producing an interfering EMF.

  • Motor is running during the Autotune function.
ETN1
Autotune Error 1
Cause: Autotune adjustment required.


Remedy:

  • F402 adjustment required (Motor temperature is too high).

  • F410 adjustment required (Motor Constant 1 improperly set).
ETN2
Autotune Error 2
Cause: Autotune adjustment required.


Remedy:

  • F412 adjustment required (Motor Constant 3 improperly set).
ETN3
Autotune Error 3
Cause: Problem with Motor Constant readings.


Remedy:

  • Autotune setting F400 is set to Auto Calculation.
ETYP
Typeform Error
Cause: Firmware information (typeform) loaded into the Gate Driver board is inconsistent with the device.


Remedy:

  • The Gate Driver board has been replaced.

  • The Gate Driver board is defective.
None
No Errors
Cause: No active faults.


Remedy:

  • System Normal.
OC1
Over-Current During Acceleration
Cause: Over-Current condition during startup/acceleration.


Remedy:

  • Improper V/f setting.

  • Restart from a momentary power outage.

  • The ASD is starting into a rotating motor.

  • ASD/Motor not properly matched.

  • Phase-to-phase short (U, V, or W).

  • Accel time too short.

  • Voltage Boost setting is too high.

  • Motor/machine jammed.

  • Mechanical brake engaged while the ASD is running.

  • ASD current exceeds 340% of the rated FLA (or 320% for >100HP).
OC1P
Overheat During Acceleration
Cause: Overheating detected during acceleration.


Remedy:

  • Cooling fan inoperative.

  • Ventilation openings are obstructed.

  • Internal thermistor is disconnected.

  • Acceleration time is too short.

  • Improper V/f setting.

  • ASD or the motor is improperly matched to the application.
OC2
Over-Current During Deceleration
Cause: Over-Current condition during deceleration.


Remedy:

  • Phase-to-phase short (U, V, or W).

  • Deceleration time is too short.

  • Motor/machine jammed.

  • Mechanical brake engaged while the ASD is running.

  • ASD current exceeds thresholds (340% or 320%).
OC2P
Overheat During Deceleration
Cause: Overheating detected during deceleration.


Remedy:

  • Cooling fan inoperative.

  • Ventilation openings are obstructed.

  • Internal thermistor is disconnected.

  • Deceleration time is too short.

  • DC Injection current is too high.

  • ASD or the motor is improperly matched to the application.
OC3
Over-Current During Run
Cause: Over-Current condition during constant speed run.


Remedy:

  • Load fluctuations.

  • ASD is operating at an elevated temperature.

  • ASD current exceeds thresholds (340% or 320%).
OC3P
Overheat During Run
Cause: Overheating detected during run.


Remedy:

  • Cooling fan inoperative.

  • Ventilation openings are obstructed.

  • Internal thermistor is disconnected.

  • Improper V/f setting.

  • ASD or the motor is improperly matched to the application.
OCA1 / OCL
U-Phase Over-Current
Cause: Low impedance at the U lead of the ASD output.


Remedy:

  • Check output cabling and motor.
OCA2 / OCL
V-Phase Over-Current
Cause: Low impedance at the V lead of the ASD output.


Remedy:

  • Check output cabling and motor.
OCA3 / OCL
W-Phase Over-Current
Cause: Low impedance at the W lead of the ASD output.


Remedy:

  • Check output cabling and motor.
OCR
Dynamic Braking Resistor Over-Current
Cause: ASD inability to discharge the bus voltage during regeneration.


Remedy:

  • No dynamic braking resistor (DBR) installed.

  • Deceleration time is too short.

  • Improper DBR setup information.

  • Defective IGBT7 (or IGBT7 ckt.).

  • 3-phase input voltage is above specification.
OH2
External Overheat
Cause: Excessive-heat signature received at the TB3 terminals.


Remedy:

  • Check TH1(+) and TH1(-) terminals.

  • See F637 for setup information.
OL1
ASD Overload
Cause: ASD Overload detected.


Remedy:

  • Acceleration time is too short.

  • DC Injection current is too high.

  • Improper V/f setting.

  • Motor running during restart.

  • ASD or the motor is improperly matched to the application.
OL2
Motor Overload
Cause: Motor Overload detected.


Remedy:

  • Improper V/f setting.

  • Motor is locked.

  • Continuous operation at low speed.

  • Load requirement exceeds ability of the motor.

  • Startup frequency setting adjustment required.
OLR
Dynamic Braking Resistor Overload
Cause: Resistor Overload detected.


Remedy:

  • Deceleration time is too short.

  • DBR setting adjustment required.

  • Over-Voltage Stall setting adjustment required.
OP1
Over-Voltage During Acceleration
Cause: Motor running during restart.


Remedy:

  • Check restart conditions.
OP2
Over-Voltage During Deceleration
Cause: Over-Voltage detected during deceleration.


Remedy:

  • Deceleration time is too short.

  • DBR value is too high.

  • DBR required (DBR setup required).

  • Stall protection is disabled.

  • 3-phase input voltage is out of specification.

  • Input reactance required.
OP3
Over-Voltage During Run
Cause: Over-Voltage detected during run.


Remedy:

  • Load fluctuations.

  • 3-Phase input voltage out of specification.

  • DBR required (DBR setup required).
OT
Over-Torque
Cause: Torque requirement by the load is in excess of the setting of F616 or F617 for a time longer than the setting of F618.


Remedy:

  • The ASD is improperly matched to the application.

  • The load is obstructed.
SOUT
Step-Out (for PM Motor Only)
Cause: Step-Out condition detected.


Remedy:

  • Motor shaft is locked.

  • Output phase is open.

  • Operating a reciprocating load.
UP1
Main Power Under-Voltage
Cause: Input 3-phase voltage is too low.


Remedy:

  • Momentary power failure longer than the time setting of F628.
UP2
Control Power Under-Voltage
Cause: Under-voltage condition at the 5, 15, or the 24 VDC supply.


Remedy:

  • 3-phase input voltage low.