Allen-Bradley PowerFlex 70 User Manual page 80

4-4 Troubleshooting
Fault No.
Drive OverLoad 64
Excessive Load 79
FluxAmpsRef 78
Rang
Ground Fault 13
Heatsink 8
OvrTemp
HW OverCurrent 12
Incompat 106
MCB-PB
IR Volts Range 77
Motor Overload 7
OverSpeed Limit 25
OverVoltage 5
Description
Drive rating of 110% for 1 minute
or 150% for 3 seconds has been
exceeded.
Motor did not come up to speed
in the allotted time.
The value for flux amps
determined by the Autotune
procedure exceeds the
programmed [Motor NP FLA].
➀
A current path to earth ground in
excess of 2A has been detected
at one or more of the drive output
terminals.
➀
Heatsink temperature exceeds a
predefined value of 90°C (195°F).
➀
The drive output current has
exceeded the hardware current
limit.
➁
Drive rating information stored on
the power board is incompatible
with the main control board.
The drive auto tuning default is
"Calculate" and the value
calculated for IR Drop Volts is not
in the range of acceptable
values.
➀
Internal electronic overload trip.
➂
Enable/Disable with [Fault Config
1] on page 3-27.
➀
Functions such as Slip
Compensation or Bus Regulation
have attempted to add an output
frequency adjustment greater
than that programmed in
[Overspeed Limit].
➀
DC bus voltage exceeded
maximum value.
Action
Reduce load or extend Accel Time.
1. Uncouple load from motor.
2. Repeat Autotune.
1. Reprogram [Motor NP FLA] with
the correct motor nameplate
value.
2. Repeat Autotune.
Check the motor and external wiring
to the drive output terminals for a
grounded condition.
1. Check for blocked or dirty heat
sink fins. Verify that ambient
temperature has not exceeded
40°C (104°F) for IP 20 (NEMA Type
1) installations or 50°C (122°F) for
Open type installations.
2. Check fan.
Check programming. Check for
excess load, improper DC boost
setting, DC brake volts set too high
or other causes of excess current.
Load compatible version files into
drive.
Re-enter motor nameplate data.
An excessive motor load exists.
Reduce load so drive output current
does not exceed the current set by
[Motor NP FLA].
Remove excessive load or
overhauling conditions or increase
[Overspeed Limit].
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.