Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 306)

306 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Chapter 6 Troubleshooting
Faults, Alarms and
Configurable Conditions Faults
A fault is a condition that stops the drive. There are three types of faults.
Alarms
An alarm is a condition that, if left unaddressed, may stop the drive if running or
prevent starting of the drive. There are two types of alarms.
Configurable Conditions
User configurable conditions can be enabled as an alarm or fault.
Viewing Faults and Alarms
Fault and alarm conditions are indicated by diagnostic parameters. See the
Fault/Alarm Info Group beginning on page 164 .
To view fault history access Diagnostics and select Faults or Alarms.
Type Description
Auto Reset Run When this type of fault occurs, and P348 [Auto Rstrt Tries] is set to a value greater than “0,” a user-
configurable timer, P349 [Auto Rstrt Delay] begins. When the timer reaches zero, the drive
attempts to automatically reset the fault. If the condition that caused the fault is no longer
present, the fault will be reset and the drive will be restarted. “Auto Reset Run” faults are
identified by “Y” in the “Auto Reset” column in
Table 10 on page 313 .
Resettable This type of fault can be cleared. Resettable faults are identified by “Resettable Fault” in the
“Type” column in
Table 10 .
Non-Resettable This type of fault normally requires drive or motor repair. The cause of the fault must be corrected
before the fault can be cleared. The fault will be reset on power up after repair. Non-Resettable
faults are identified by “Non-Reset Fault” in the “Type” column in
Table 10 .
Type Description
Alarm 1 Alarms of type 1 indicate that a condition exists. Type 1 alarms are user configurable.
Alarm 2 Alarms of type 2 indicate that a configuration error exists and the drive cannot be started. Type 2
alarms are non-configurable.
Type Description
Configurable Event action is enabled/disabled by the parameter identified in the “Configuration Parameter”
column of
Table 10 .
Options
Ignore (0) – No action is taken.
Alarm (1) – Type 1 alarm indicated.
Flt Minor (2) – Minor fault indicated. If running, drive continues to run.
Enable with P950 [Minor Flt Cfg]. If not enabled, acts like a major fault.
FltCoastStop (3) – Major fault indicated. Coast to Stop.
Flt RampStop (4) – Major fault indicated. Ramp to Stop.
Flt CL Stop (5) – Major fault indicated. Current Limit Stop.
FltNonRest (6) – Major fault indicated. Cycle power to clear the fault.