Toshiba H9 Installation And Operation Manual page 262

LED Display LCD Display
OL1
ASD Overload
OL2
Motor Overload
OLR
Dynamic Braking
Resistor Overload
OP1 Overvoltage During
Acceleration
OP2
Overvoltage During
Deceleration
OP3
Overvoltage During
Run
OT
Overtorque
SOUT
Step-Out
(for PM Motor Only)
UP1
Main Power
Undervoltage
UP2
Control Power
Undervoltage
254
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.
• DBR setting adjustment required.
• Overvoltage Stall setting adjustment required.
• 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
a 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 undervoltage condition at the 5, 15, or the 24 VDC
supply.
• 3-phase input voltage low.
F616
H9 ASD Installation and Operation Manual
or F617 for