Manually Clearing Faults; Fault Descriptions - Allen-Bradley PowerFlex 70 User Manual

Manually Clearing Faults

Step
1. Press Esc to acknowledge the fault. The fault information will be
removed so that you can use the HIM.
2. Address the condition that caused the fault.
The cause must be corrected before the fault can be cleared.
3. After corrective action has been taken, clear the fault by one of
these methods.
• Press Stop
• Cycle drive power
• Set parameter 240 [Fault Clear] to "1."

Fault Descriptions

Table 4.A Fault Types, Descriptions and Actions
Fault No.
Analog In Loss 29
Anlg Cal Chksum 108
Auto Rstrt Tries 33
AutoTune Aborted 80
Auxiliary Input 2
DB Resistance 69
Decel Inhibit 24
Description
➀
An analog input is configured to
fault on signal loss. A signal loss
➂
has occurred.
Configure with [Anlg In 1, 2 Loss]
on page 3-33.
The checksum read from the
analog calibration data does not
match the checksum calculated.
➂
Drive unsuccessfully attempted
to reset a fault and resume
running for the programmed
number of [Flt RstRun Tries].
Enable/Disable with [Fault Config
1] on page 3-27.
The autotune function was
canceled by the user.
➀
Auxiliary input interlock is open.
Resistance of the internal DB
resistor is out of range.
➂
The drive is not following a
commanded deceleration
because it is attempting to limit
bus voltage.
Troubleshooting
Key(s)
Esc
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.
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.
4-3