Rockwell Automation Allen-Bradley PowerFlex 700AFE, User Manual

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132 Rockwell Automation Publication 20Y-UM001F-EN-P - April 2017
Chapter 5 Troubleshooting
Table 24 - Instability in the AC Line Input Current and DC Bus Voltage
Incorrect digital input programming. None Program [Digital Inx Sel] for correct
inputs (see
page 115 ).
Run programming can be missing.
There is some other start inhibit. Check status bits of
parameter 100 [Start
Inhibits]. Correct the source of the inhibit.
Causes Indication Corrective Action
AC line voltage more than 5% above
normal. Instability in AC line current
and DC bus voltage.
Can 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.
Can 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.
Causes Indication Corrective Action