Rockwell Automation 20D PowerFlex 700 Installation Instructions - Frames 7…10 - Manual (Page 71)

Rockwell Automation Publication 20B-IN014H-EN-P - June 2013 71
PowerFlex 700 Adjustable Frequency AC Drive – Frames 7…10
Troubleshooting
For a complete listing of Faults and Alarms, refer to the PowerFlex 700 User
Manual.
Table 6 - Abbreviated Fault Listing
Fault
No
.
Ty
pe
(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.