Troubleshooting guide

1336 PLUS II - 6.16 - September, 2001
Troubleshooting and Error Codes 3-7
Phase W Fault
40
A phase to ground fault has been
detected between the drive and
motor in this phase.
Check the wiring between the drive and
motor. Check motor for grounded
phase.
Poles Calc Flt
50
Generated if the calculated value
of [Motor Poles] is less than 2 or
greater than 32.
Check [Motor NP RPM] and [Motor NP
Hertz] programming.
Power Loss Fault
03
DC bus voltage remained below
85% of nominal for longer than
500ms. [Line Loss Fault] parameter
is set to “enabled.”
Monitor the incoming AC line for low
voltage or line power interruption.
Power Mode Fault
26
The internal power mode variable
received an incorrect value.
Check all connections to the Control
Board. Replace the board or complete
drive as required.
Power Overload
64
The drive rating of 150% for 1
minute has been exceeded.
Reduce load.
Precharge Fault
19
The precharge device was open
20ms after the end of a line loss
condition or the bus charging alarm
remains on for 20 seconds (pre-
charge did not complete).
See Chapter 1 for frame definitions.
1. Frames A1, A2, A3 - Check the pre-
charge circuit. Replace the drive.
2. Frame B - Check the precharge cir-
cuit. Replace the Power Driver Bd. or
complete drive as required.
3. All larger frames - Check the pre-
charge circuit. Replace the input
SCRs, SCR Firing Board, Power
Driver Board or complete drive as
needed.
Precharge Open
56
The precharge circuit was com-
manded to close, but was detected
to be open.
See page 1–1 for frame definitions.
1. Frames A1, A2, A3 - Check the pre-
charge circuit. Replace the drive.
2. Frame B - Check the precharge cir-
cuit. Replace the Power Driver Bd. or
complete drive as required.
3. All larger frames - Check the pre-
charge circuit. Replace the input
SCRs, SCR Firing Board, Power
Driver Board or complete drive as
needed.
Prm Access Flt
34
A communication error occurred
between the microprocessor and
the serial EEPROM or the DSP.
Record the value in [Fault Data], then
reset the fault. If this fault occurs
repeatedly, contact factory.
Reprogram Fault
48
The drive was commanded to write
default values to EEPROM.
1. Clear the fault or cycle power to the
drive.
2. Program the drive parameters as
needed.
Important: If [Input Mode] has been
changed from its original value, power
must be cycled before the new value
will take affect.
ROM or RAM Flt
68
Internal power-up ROM or RAM
tests have not executed properly.
Replace Control Board or complete
drive as required.
Name & Fault # Description Action