GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 352)

GEI-100332Ga
——— TROUBLESHOOTING ———
8
2
FAILURE ALARM POSSIBLE CAUSES
Heatsink
Heatsink temperature too high
Ambient temperature too high
Failure of device fan [with devices > 88 A (American), 110 A (European)]
Dirty heatsink
Overtemp Motor
Motor overtemperature (signaled by the thermistor to the terminals 78/79)
The motor is not provided with a thermistor: no jumper between the terminals 78 and 79
Cable between thermistor connection on motor and terminals 78 and 79 interrupted.
Overheating of motor:
Load cycle too extreme
Ambient temperature at site of motor too high
Motor has an external fan: fan failed
Motor does not have an external fan: too large a load at low
speeds. The cooling effect of the fan on the motor shaft is too
low for this load cycle. Change cycle or fit external fan.
External fault
External failure, reported on terminal 15
If the “External fault” message is not used: connection missing between terminals 16
and 18 (reference point) and/or 15 and 19.
If the “External fault” message is used:
The signal on terminal 15 is missing (15...30V to terminal 16).
With external voltage supply: reference points must be con-
nected with each other!
Brake fault Error in the brake opening or closing sequence after the Brake control has been enabled.
Refer to chapter 6.14.8 and check that wiring, parameters and sequences of signals are
correct.
Motor I2t ovrld Excessive motor overload.
Refer to chapters 6.14.6 and 6.11.7 (Motor I2t ovrld alarm) and check the exactness of
the data that have been entered. If these are correct, wait until the accumulator (Motor
I2t accum) is zeroed before resetting the alarm and then enable the drive.
Drive I2t ovrld Excessive drive overload.
Wait until the accumulator (Drive I2t accum) is zeroed before resetting the alarm and
then enable the drive. No data can be configured for this alarm; however, reference
should be made to chapter 6.14.6 for further information about calculating thresholds.