Hi everyone,

M1 Comm1 Error
+  Internal communications error.
- Improperly programmed ASD.
- Improper communications settings.
- Improperly connected cables.

CM2 Comm2 Error
+  External communications error.

E Emergency Off
+  Output signal from the ASD is terminated and a brake may be applied if so configured.
- Stop|Reset pressed twice at the EOI.
- EOFF command received remotely.
- ASD reset required.

MOFF Main Under-Voltage
+  Under-voltage condition at the 3-phase AC input to the ASD.
- Low 3-phase commercial voltage.

OJ Timer
+  Run-time counter exceeded.
- Type reset required; select Clear run timer.

OLM Motor Overload
+  Load requirement in excess of the capability of the motor.
- 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
+  Excessive current at the Dynamic Braking Resistor.
- Deceleration time is too short.
- DBR configuration improperly set.

OP Over-Voltage
+  DC bus voltage exceeds specifications.
- 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
+  Torque requirement is in excess of the setting of F616 or F617 for a time longer than the setting of F618.
- ASD is not correctly matched to the application.
- F616 or F617 setting is too low.
- Obstructed load.

POFF Control Under-Voltage
+  Under-voltage condition at the 5, 15, or 24 VDC supply.
- Defective Control board.
- Excessive load on power supply.
- Low input voltage.

PtSt Reference Point
+  Two speed-reference frequency setpoint values are too close to each other.
- Increase the difference between the two speed reference frequency setpoints.

UC Under-Current
+  With the Low-Current Trip (F610) parameter enabled, the output current of the ASD is below the level defined at F611 and remains there for a time longer than the setting of F612.
- Output current too low.

E Emergency Off
+  Emergency Off command received via EOI or remotely.

E-10 Sink/Source Setting Error
+  Improperly positioned Sink/Source jumper on the Terminal board or on an option device (see J100 at the Terminal PCB of the ASD).
- Sink/Source configuration is incorrect.

E-11 Brake Sequence Response Error
+  F630 is set to a non-zero value.
- Braking sequence discrete input and output terminals are not set up properly.

E-12 Encoder Signal-Loss Error
+  ASD is configured to receive a signal from a shaft-mounted encoder and no signal is being received while running.
- 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
+  Result of a motor speed that is greater than the commanded speed when using an encoder for speed control.
- Improper encoder connection or setup information.
- Defective encoder.

E-17 Key Failure
+  Same key input for 20 seconds or more.

E-18 Analog (Terminal) Input Loss
+  V/I signal loss.
- Terminal Board failure.
- P24 over-current condition.
- F633 setting is too high.

E-19 CPU Communication Error
+  CPU data Transmit/Receive error.

+ Toshiba H9 User manual

+ Toshiba H9 Fault index >>

+ Toshiba H9 Fault Codes 1 >>

+ Toshiba H9 Fault Codes 2 >>

+ Toshiba H9 VFD 

+ Toshiba 2 Main page

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+ VFD Main page -

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