Rockwell Automation 20A PowerFlex 70 Adjustable Frequency AC Drive - Manual (Page 50)

50 Rockwell Automation Publication 20A-IN009D-EN-P - June 2013
PowerFlex 70 Adjustable Frequency AC Drive
OverSpeed Limit 25
➊
Functions such as Slip Compensation or
Bus Regulation have attempted to add
an output frequency adjustment greater
than that programmed in [Overspeed
Limit]. Remove excessive load or
overhauling conditions or increase
[Overspeed Limit].
OverVoltage 5
➊
DC bus voltage exceeded maximum
value. Monitor the AC line for high line
voltage or transient conditions. Bus
overvoltage can also be caused by
motor regeneration. Extend the decel
time or install dynamic brake option.
SW OverCurrent 36
➊
Drive output current has exceeded the
1ms current rating. This rating is greater
than the 3 second current rating and less
than the hardware overcurrent fault
level. It is typically 200-250% of the
drive continuous rating. Check for excess load, improper DC
boost setting. DC brake volts set too
high.
(1) See the PowerFlex 70 User Manual, publication 20A-UM001 , for a description of fault types.
Table 21 - Abbreviated Fault Table (continued)
Fault No
.
Ty
pe
(1)
Description Action