Toshiba H9 Installation And Operation Manual page 256

LED LCD
Display Display
OC Over Current
*OH Overheat
OJ Timer
*OLI ASD Overload
OLM Motor Overload
*OLR Resistor
Overload
248
Description
ASD output current greater than
F601
setting.
ASD ambient temperature
excessive.
Run-time counter exceeded.
Load requirement in excess of
the capability of the ASD.
Load requirement in excess of
the capability of the motor.
Excessive current at the
Dynamic Braking Resistor.
Possible Causes
• 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.
• ASD is operating at an elevated temperature.
• ASD is too close to heat-generating equipment.
• Cooling fan vent is obstructed (see
ASD on pg. 15).
• Cooling fan is inoperative.
• Internal thermistor is disconnected.
• Type Reset required; select Clear run timer.
• 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.
• V/f parameter improperly set.
• Motor is locked.
• Continuous operation at low speed.
• The load is in excess of what the motor can deliver.
• Deceleration time is too short.
• DBR configuration improperly set.
H9 ASD Installation and Operation Manual
Mounting the H9