Rockwell Automation 20Y PowerFlex Active Front End - Manual (Page 122)

122 Rockwell Automation Publication 20Y-UM001E-EN-P - July 2014
Chapter 5 Troubleshooting
Common Symptoms and
Corrective Actions AFE does not Start from Start or Run Inputs wired to the terminal block.
Instability in the AC Line Input Current and DC Bus Voltage.
Cause(s) Indication Corrective Action
AFE is faulted Flashing red status light Clear fault.
• Press the HIM
(Stop) key.
• Cycle power to the AFE.
• Set parameter 121 [Fault Clear] to
‘1’ (Clear Faults); see page 105 .
• ‘Clear Faults’ by using the HIM
Diagnostic menu.
Incorrect input wiring; see Control Wiring
on page 40 or Control Wiring on page 72
for wiring examples.
NOTE: Jumper between terminals 17, 18,
and 20 is required when using the 24V DC
internal supply.
None Wire inputs correctly and/or install
jumper.
Incorrect digital input programming. None Program [Digital Inx Sel] for correct
inputs (see
page 111 ).
Run programming may be missing.
There is some other start inhibit. Check status bits of parameter
100 [Start Inhibits]. Correct the source of the inhibit.
Cause(s) Indication Corrective Action
AC line voltage more than 5% above
normal. Instability in AC line current
and DC bus voltage.
May trip on fault F7 ‘Overload’. Increase parameter 060 [DC Volt Ref]
proportional to the percentage of the
AC line voltage above nominal.
Negative reactive I Ref on parameter 065
[Reactive I Ref] with a soft (high
impedance) AC line. Instability in AC line current
and DC bus voltage.
May trip an F7 overload. Change parameter 065 [Reactive I Ref]
value to zero. Verify if the AFE is
running on a soft line per AC line source
considerations.