Rockwell Automation 1756-DMF30 ControlLogix Drive Module - Manual (Page 359)

Publication 1756-UM522B-EN-P - February 2003
1756-DMF30 Specific Information C-107
Parameter 2123 [MC Warnings]
This parameter indicates the occurance of a motor-control warning
event. These bits are set when a warning event is detected. They
stay latched until bit 19 [Clear Fault] of parameter 152 [Applied Logic
Cmd] or bit 19 [Clr Drv Wrn] of parameter 166 [Motor Ctrl Cmd] is set.
If the warning event remains present, the identifying bit is set again.
Refer to parameter 381 [PMI Warning Cnfg] to configure the Drive
Module's response to these warnings.
12 PMI Pwr Sply The PMI power supply is not working correctly.
13 PMI Bus There is a bus fault in the PMI rack. This is indicated
when the Resolver and Drive l/O module and the DC
Power Technology module do not respond to requests
from the PMI Processor. This error indicates that
there is a hardware problem in the rack.
15 PMI CommLoss Communication between the PMI processor and the
Drive Module has failed.
Bit Fault Name Fault Description
0 BrdgNotFirng Not all SCRs are carrying the same the load. A bit set
in the parameter 2124 [Pwr DeviceStatus] indicates
which SCR is not working properly.
1 Low AC Line AC line voltage is less than 85% of its nominal value,
which was entered as a configuration parameter. This
can be caused by a low-line condition or a missing
phase. The system will automatically adjust the
phase angle to give the correct current amount and
will continue to fire SCRs as long as zero crossings
are detected. If zero crossings are no longer detected,
a fault condition will result.
3 LineSyncLoss The system is continuing to operate through a
temporary loss of AC line voltage. Refer to bit 3 [AC
Line Sync] of parameter 2122 [MC Fault].
4 Curr Ref Lim The current reference has exceeded the value
entered in parameter 2184 [PMI Curr Lim].
5 ID TestAbort The drive has failed an armature identification test,
field identification test or resolver balance
calibration test.
6 Fld OvrCurr Field current has exceeded 150% of the value in
parameter 2185 [Hot Field Curr].
7 3Ph Fdbk Rev Three-phase feedback wiring is reversed - the
polarity of the feedback is the oposite of expected.
8 CT Fdbk Rev Current transformer feedback is reversed - the
polarity of the feedback is the oposite of expected.
Bit Fault Name Fault Description