Toshiba H9 Manual Do Utilizador

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H9 ASD Installation and Operation Manual

Over Current

ASD output current greater than 

 setting.

• Defective IGBT (U, V, or W).

• ASD output to the motor is connected incorrectly. 

Disconnect the motor and retry.

• 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.

Overheat

ASD ambient temperature 
excessive.

• ASD is operating at an elevated temperature.

• ASD is too close to heat-generating equipment.

• Cooling fan vent is obstructed (see 

).

• Cooling fan is inoperative.

• Internal thermistor is disconnected.

Timer

Run-time counter exceeded.

• Type Reset required; select Clear run timer.

ASD Overload

Load requirement in excess of 
the capability of the ASD.

• 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.

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.

Resistor 
Overload

Excessive current at the 
Dynamic Braking Resistor.

• Deceleration time is too short.

• DBR configuration improperly set.