Toshiba G9 Installation And Operation Manual page 260

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OL1 ASD Overload
OL2 Motor Overload
OLR Dynamic Braking Resistor
Overload
OP1 Over-Voltage During
Acceleration
OP2 Over-Voltage During
Deceleration
OP3 Over-Voltage During Run
OT Over-Torque
Step Out
SOUT
(for PM Motor Only)
Main Power
UP1
Under-Voltage
Control Power 
UP2
Under-Voltage
252
Possible Causes
• 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.
• Improper V/f setting.
• Motor is locked.
• Continuous operation at low speed.
• Load requirement exceeds ability of the motor.
• Startup frequency setting adjustment required.
• Deceleration time is too short.
• Improper DBR setup information.
• Improper Stall setup information.
• Motor running during restart.
• 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.
• Load fluctuations.
• 3-Phase input voltage out of specification.
• DBR required (DBR setup required).
• A torque requirement by the load in excess of the setting of
time longer than the setting of F618.
• The ASD is improperly matched to the application.
• The load is obstructed.
• Motor shaft is locked.
• Output phase is open.
• Operating a reciprocating load.
• Input 3-phase voltage is too low.
• Momentary power failure longer than the time setting of F628.
• This fault is caused by an under-voltage condition at the 5, 15, or the 24 VDC
supply.
• Loss of the SU+ voltage while operating in the Backup Power mode.
• 3-phase input voltage low.
F616 or
G9 ASD Installation and Operation Manual
F617 for a