Rockwell Automation SA500 AC Power Modules User Manual
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2-4
SA500 Power Modules
The signals associated with the following LEDs interface to the Power Module via the
Drive I/O connector. See figure 2.6.
EXT FLT (red) -
When lit, this LED indicates that one of the following external
fault conditions has occurred:
•
Overcurrent fault
Corresponding UDC location: Register 202/1202, bit 1
•
User-programmed fault
Corresponding UDC location: Register 101/1101, bit 2
•
Overspeed fault
Corresponding UDC location: Register 202/1202, bit 10
RAIL FLT (red) -
When lit, this LED indicates communication between an I/O
rail and the PMI has been disrupted, or that a rail has been
configured but is not plugged in.
Registers 0-23 are available in the UDC module for rail
variable configuration and diagnostic purposes. If a rail
communication problem is detected and logged in register 4,
10, 16, or 22, then bit 13 in the Drive Warnings register
(203/1203) will be set.
Note that rail faults will not cause the drive to shut down. The
user must ensure that the application task tests the rail fault
registers and forces appropriate action in the event of a fault.
FDBK OK (green) -
When lit, this LED indicates that the Resolver & Drive I/O
module is receiving feedback from the resolver and that no
resolver feedback faults have been detected.
If the LED is off, it indicates the following fault:
•
Feedback broken wire fault. The resolver sine and/or
cosine signals are missing, or the resolver gain tunable
(RES_GAN%) has been set too low.
Corresponding bit location: Register 202/1202, bit 8
RPI (green) -
When lit, this LED indicates that the run permissive input
(RPI) signal is detected on pin A. The RPI signal typically
originates from the drive's coast-to-rest stop circuit.
Corresponding bit location: Register 201/1201, bit 0.
MCR (amber) -
When lit, this LED indicates the MCR (motor control relay)
output signal is being driven on (pin P). The MCR output is
under the control of the PMI. This LED will turn on when the
drive is put into run and will turn off when the drive is idle. The
use of a motor control relay is optional.