GE Industrial Solutions AF-300C AC Drive - Manual (Page 93)

GEK-85718
8. TROUBLESHOOTING
and Figures within this Section arefurnished to aid in troubleshooting the more common problems
that may be encountered with the Inverter. If after performing all suggested procedures and the
problem still is present, it may be necessary to contact the distributor that the inverter was purchased from. For
parts ordering procedures (In Warranty and Out of Warranty), refer to Section 9; for replacement parts listing,
refer to Section
For more expediant troubleshooting of Faults, it is recommended that as much information
as possible be recorded from the inverter before resetting and continuing operation. See Sections 5 and 6 of
this Instruction Book for additional Fault information
TABLE FAULT DESCRIPTION AND OPERATION
Functlon
CL Current Limit
Undervoltage Trip
o c 2
o c 3
Overcurrent Trip
ou Overvoltage
Detection
lnverter Overload
OH1 lnverter Overheat
Motor Overload
(Electronic Thermal
Overload)
Description
Provides restriction of the output current when the inverter reaches the
current limit level.
-- Operation will be kept on for 15 at full load in case of power
failure. (At light load, operating time may be slightly longer.)
-- When the DC Link goes below the under-voltage level, the inverter will
stop output and hold the fault trip (motor coasts to stop).
When the output current of the inverter reaches the overcurrent protection
level, the inverter will stop output and hold the fault trip (motor coasts to
stop).
: Overcurrent during acceleration.
OC2: Overcurrent during deceleration.
OC3: Overcurrent during constant speed.
Ground faults are detected by the ground fault detection unit (standard
equipment).
NOTE:
The ground fault
is
protect
inverfer on/y.
For prevention of personnel injury, efc, a leak-proof relay, should be
connected separately.
When the DC Link voltage reaches the overvoltage protection level,
the inverter will stop output and hold the fault trip (motor coasts to stop).
When overload operation exceeds the overload limit (inverse time
characteristic) of the invetter, the inverter will stop output and hold the fault
trip (motor coasts to stop).
If the temperature of the inverter unit is too high, the inverter will stop output
and hold the fault trip (motor coasts to stop).
When only one motor is driven, overload can be detected without an .
external thermal device. Since reduction in the cooling effect at low speed
is taken into account, protection over a wide operation range can be
provided. When overload operation exceeds the electronic thermal overload
setting (inverse time characteristic) the inverter will stop output and hold the
fault trip (motor coasts to stop).
CAUTION: When drivina more than one motor, provide protection with a
thermal in line with each motor.
8-1