Rockwell Automation 20B PowerFlex 700 Installation Instructions - Frames 0…6 - Manual (Page 72)

72 Rockwell Automation Publication 20B-IN019E-EN-P - July 2013
PowerFlex 700 Adjustable Frequency AC Drive – Frames 0…6
Troubleshooting
For a complete listing of Faults and Alarms, refer to the PowerFlex 700 User
Manual, publication
20B-UM002 .
Table 10 - Abbreviated Fault Listing
Fault No
.
Type
(1
)
(1) See the User Manual for a description of fault types.
Description Action
Auxiliary
Input 2 ➀ Auxiliary input interlock is open. Check remote wiring.
Decel Inhibit 24 ➂ The drive is not following a commanded
deceleration because it is attempting to
limit bus voltage. 1. Verify input voltage is within drive
specified limits.
2. Verify system ground impedance
follows proper grounding techniques.
3. Disable bus regulation and/or add
dynamic brake resistor and/or extend
deceleration time. Refer to
page 6 for
further info.
4. Disable with parameter 238.
FluxAmpsRef
Rang 78 The value for flux amps determined by the
Autotune procedure exceeds the
programmed [Motor NP FLA], parameter
042. 1. Reprogram [Motor NP FLA] with the
correct motor nameplate value.
2. Repeat Autotune.
HW
OverCurrent 12 ➀ The drive output current has exceeded the
hardware current limit. Check programming. Check for excess load,
improper DC boost setting, DC brake volts
set too high or other causes of excess
current.
IR Volts
Range 77 “Calculate” is the autotune default and the
value determined by the autotune
procedure for IR Drop Volts is not in the
range of acceptable values. Re-enter motor nameplate data.
Motor
Overload 7 ➀
➂ Internal electronic overload trip.
Enable/Disable with [Fault Config 1]. An excessive motor load exists. Reduce
load so drive output current does not
exceed the current set by [Motor NP FLA].
OverSpeed
Limit 25 ➀ Functions such as Slip Compensation or Bus
Regulation have attempted to add an
output frequency adjustment greater than
that programmed in [Overspeed Limit],
parameter 083. Remove excessive load or overhauling
conditions or increase [Overspeed Limit].
OverVoltage 5 ➀ 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 ➀ 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.