GE Industrial Solutions AF-300C AC Drive - Manual (Page 95)

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AF-300C GEK-85718
TABLE 8: FAULT CONDITION DISPLAY AND
CORRECTIVE ACTION
Check For: Corrective Action
AC supply voltage not within permissible limits . . . . . . . . . . . . Check inverter specs and adjust AC supply voltage.
Output line short-circuited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check output line insulation.
Megger test the motor.
Proper torque boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust as needed (reduce torque boost).
Proper acceleration time Lengthen the acceleration time.
Loose Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check on operation of external output contactor
If used.
Check Main Circuit wiring connections
Other than above Check transistors
Increase inverter capacity (use larger HP inverter).
AC supply voltage not within permissible limits . . . . . . . . . . . . Check inverter specs and adjust AC supply voltage.
Output line short-circuited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check output line insulation.
Megger test the motor.
Proper deceleration time Lengthen the deceleration time.
Loose Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check on operation of external output contactor
If used.
Check Main Circuit wiring connections
Other than above . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connect DB braking unit resistor (optional) or check
operation of if already present. (Check
of
thermal interlock connections to DB unit.)
Increase inverter capacity (use larger HP inverter).
o c 3 AC supply voltage not within permissible limits . . . . . . . . . . . . Check inverter specs and adjust AC supply voltage.
Output line short-circuited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check output line insulation.
Megger test the motor.
Sudden change in load Eliminate sudden load changes.
Loose Connections . . . . . . . . . . . . . . . . . . Check on operation of external output contactor
if used.
Check Main Circuit wiring connections
Other than above . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check for electrical noise.
Check on operation of external output contactor
If used.
Increase inverter (use larger HP inverter).
ou AC supply voltage not within permissible . . . . . . . . . . . . Check inverter specs and adjust AC supply voltage.
Proper deceleration time Lengthen the deceleration time.
Dynamic Braking not functioning properly Connect DB braking unit resistor (optional) or check
operation of if already present.
Check polarity of thermal interlock connections to
DB unit.
Check Function Code 34; increase setting
value if
necessary.
NOTE: Motor will coast-to-stop when fault condition is displayed. After obtaining Fault information and correcting the
cause of the problem, reset by pressing the RESET key on the Keypad Panel, or momentarily close contact between the
control circuit terminals after the motor has stopped.
NOTE: if a fault cannot be reset, check to be sure that a RUN command is not present.
NOTE: may be displayed when the AC supply is switched OFF and does not indicate any abnormality.
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