Toshiba G9 Drives

Toshiba G9 Drives Fault Codes:

Fault Code and Meaning	Cause and Remedy
Atn Autotune Active	Cause: Indicates that the Autotune function is active. Remedy: No action required (System status notification). Wait for the autotune process to complete.
dbOn DC Braking	Cause: This code conveys the DC Injection function is being carried out. The display shows db when braking and shows dbOn when the motor shaft stationary function is being carried out. Remedy: No action required (System status notification).
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: Check external communication cables. Check network settings.
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: Check for low 3-phase utility 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 Over-Heat	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 (see Mounting the ASD). 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 utility 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 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 is below the level defined at F611 for longer than F612 (with F610 enabled). Remedy: Check load connection. Verify low-current trip parameters (F610, F611, F612).
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 at the Terminal PCB of the ASD). Check Sink/Source configuration settings.
E-11 Brake Sequence Response Error	Cause: F630 is set to a non-zero value, or setup issue. Remedy: 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-18 Analog (Terminal) Input Loss	Cause: V/I signal loss or terminal failure. Remedy: V/I signal loss. 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 internal connections. Make service call.
E-20 V/f Control Error	Cause: Torque processing error. Remedy: Make service call.
EF1 / EF2 (Earth) Ground Fault	Cause: Current leakage to Earth Ground. Remedy: Ground fault at the motor. Ground fault at the output of the ASD. Check motor and cabling insulation.
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. Check input fuses/breakers.
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 cabling to motor. Check motor windings.
ERR2 RAM Fault	Cause: Internal RAM malfunction. Remedy: Make a service call.
ETN Autotune Error	Cause: Autotune readings 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 producing interfering EMF. Motor is running during the Autotune function.
OC1 Over-Current During Acceleration	Cause: Current exceeded limit during acceleration. Remedy: Improper V/f setting. Restart from a momentary power outage. The ASD is starting into a rotating motor. 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.
OC2 Over-Current During Deceleration	Cause: Current exceeded limit 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.
OC3 Over-Current During Run	Cause: Current exceeded limit during constant speed run. Remedy: Load fluctuations. ASD is operating at an elevated temperature.
OCA1 / OCA2 / OCA3 Phase Over-Current	Cause: Low impedance at the U, V, or W lead of the ASD output. Remedy: Check cabling to motor for shorts. Check motor insulation.
OCR Dynamic Braking Resistor Over-Current	Cause: ASD inability to discharge the bus voltage during regeneration. Remedy: No Dynamic Braking Resistor (DBR) installed. DBR value is too low. Deceleration time is too short. Improper DBR setup information. Defective IGBT7 (or IGBT7 circuit).
OP1 Over-Voltage During Acceleration	Cause: DC Bus voltage high during accel. Remedy: Motor running during restart.
OP2 Over-Voltage During Deceleration	Cause: DC Bus voltage high during decel. Remedy: Deceleration time is too short. DBR value is too high. DBR required (DBR setup required). Stall protection is disabled. Input reactance required.
UP1 Main Power Under-Voltage	Cause: Input 3-phase voltage is too low. Remedy: Check utility power. Momentary power failure longer than the time setting of F628.