PowerFlex Digital DC Drive User Manual -
Publication 20P-UM001C-EN-P - July 2008
4-10
Troubleshooting
Common Drive Symptoms
and Corrective Actions
Drive will not start
Drive Symptom
Action
An external “Start” command was issued, but the
drive does not start.
•
Verify that no faults or alarms are displayed. If a
fault or alarm is displayed, follow the corrective
action provided (refer to
Alarm Descriptions on page 4-7
).
•
The external wiring to the programmed Start
terminal block connection is missing.
•
Verify that +24V DC is present at terminal block
connection.
•
Verify that 24V Supply Common is connected
between terminals 18 and 16.
•
Verify that the configuration for Pars 133-144
[Digital Inx Sel] matches the switch wiring.
The drive is not in a "Ready" state, is not
“Enabled” or a “Stop” is asserted.
Check the Enable and Stop inputs. Verify that the
wiring is correct (refer to
).
External AC Input or DC Output contactor, if used,
has not closed.
If using an AC Input contactor:
•
Verify that the drive is "Ready", then verify that
the required coil voltage is present at terminals
35 and 36 (Relay Output 1). If the coil voltage is
present at terminals 35 or 36, then verify that
proper voltage is at the AC Input contactor coil.
•
Inspect the contactor for mechanical problems.
•
Verify that Par 1391 [ContactorControl] is set
properly.
•
Verify that the contactor and/or auxiliary
contact is properly wired to a digital input on
the drive and that the appropriate digital input
selection parameter (133-144 [Digital Inx Sel])
is set to 31 “Contactor”.
•
Verify that parameter 1392 [Relay Out 1 Sel] is
set to 25 “Contactor”.
If using an external DC Output contactor:
•
Verify that the drive is "Ready", then verify that
the required coil voltage is present at terminals
35 and 36 (Relay Output 1). If the coil voltage is
present at terminals 35 or 36, then verify that
the proper voltage is at the DC Output
contactor coil.
•
Inspect the contactor for mechanical problems.
•
Verify that parameter 1391 [ContactorControl]
is set properly.
•
Verify that the contactor and/or auxiliary
contact is properly wired to a digital input on
the drive and that the appropriate digital input
selection parameter (133-144 [Digital Inx Sel])
is set to 31 “Contactor”.
•
Verify that parameter 1392 [Relay Out 1 Sel] is
set to 25 “Contactor”.