Fault Descriptions - Allen-Bradley powerflex 700 User Manual

Chapter 2 Troubleshooting

Fault Descriptions

86
Table 2 - Fault Types, Descriptions and Actions
Fault
Analog In Loss 29 1
3
Anlg Cal Chksum 108
Auto Rstrt Tries 33 3 Drive unsuccessfully attempted to reset
AutoTune Aborted 80
Auxiliary Input 2 1 Auxiliary input interlock is open.
Cntl Bd Overtemp 55
DB Resistance 69
Decel Inhibit 24 3 The drive is not following a
Drive OverLoad 64
Drive Powerup 49
Excessive Load 79
Encoder Loss 91
Encoder Quad Err 90
Fatal Faults 900- 2 Diagnostic code indicating a drive
930
Faults Cleared 52
Flt QueueCleared 51
FluxAmpsRef Rang 78
Rockwell Automation Publication 20B-UM002G-EN-P - July 2014
Description
An analog input is configured to fault
on signal loss. A signal loss has
occurred.
Configure with [Anlg In 1, 2 Loss] on
page 60.
The checksum read from the analog
calibration data does not match the
checksum calculated.
a fault and resume running for the
programmed number of [Flt RstRun
Tries].
Enable/Disable with [Fault Config 1] on
page 52.
Autotune function was canceled by the
user or a fault occurred.
The temperature sensor on the Main
Control Board detected excessive heat.
Resistance of the internal DB resistor is
out of range.
commanded deceleration because it is
attempting to limit bus voltage.
Drive rating of 110% for 1 minute or
150% for 3 seconds has been exceeded.
No fault displayed. Used as a Power Up Marker in the Fault Queue indicating that the
drive power has been cycled.
Motor did not come up to speed in the
allotted time during autotune.
Requires differential encoder. One of
the two encoder channel signals is
missing.
Both encoder channels changed state
within one clock cycle.
malfunction.
No fault displayed. Used as a marker in the Fault Queue indicating that the fault clear
function was performed.
No fault displayed. Used as a marker in the Fault Queue indicating that the clear
queue function was performed.
The value for flux amps determined by
the Autotune procedure exceeds the
programmed [Motor NP FLA].
Action
1. Check parameters.
2. Check for broken/loose connections at
inputs.
Replace drive.
Correct the cause of the fault and manually
clear.
Restart procedure.
Check remote wiring.
1. Check Main Control Board fan.
2. Check surrounding air temperature.
3. Verify proper mounting/cooling.
Replace resistor.
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. See the Attention
statement on page 12 for further
info.
Reduce load or extend Accel Time.
1. Uncouple load from motor.
2. Repeat Autotune.
1. Check Wiring.
2. Check motor rotation.
3. Check encoder pulses, rotation, etc.
4. Replace encoder.
1. Check for externally induced noise.
2. Replace encoder.
1. Cycle power.
2. Replace Main Control Board.
3. Contact Tech Support.
1. Reprogram [Motor NP FLA] with the
correct motor nameplate value.
2. Repeat Autotune.