Rockwell Automation SA3100 Power Module Interface (PMI) Regulator - Manual (Page 22)

2-6 PMI Regulator
RESOLVER AND DRIVE I/O STATUS LEDs
EXT FLT (red) -
(continued)
• Charge bus time-out fault. (Note that the P.M. FLT LED
will also be on.) This fault indicates one of the following
conditions:
• The DC bus is not fully charged within 10 seconds after
the bus enable bit (register 100/1100, bit 4) is turned on.
• The drive is on and feedback indicates that the pre-
charge contactor has opened.
• DC bus voltage is less than the value stored in the
Power Loss Fault Threshold (PLT_EO%) tunable
variable.
Corresponding UDC location: Register 202/1202, bit 6
• Over speed fault. The motor’s velocity exceeds the value
entered as the Over Speed Trip (RPM) configuration
parameter.
Corresponding UDC location: Register 202/1202, bit 10
• The user’s application program has instructed the LED to
turn on.
Corresponding UDC location: Register 101/1101, bit 2
I/O FLT (red) - When lit, this LED indicates communication between a Flex
I/O module and the PMI processor has been disrupted.
Registers 0-23 are available in the UDC module for Flex I/O
configuration and diagnostic purposes. If an I/O
communication problem is detected and logged in registers
10/22 or 11/23, then bit 13 in the Drive Warnings register
(203/1203) will be set.
!
ATTENTION: Flex I/O faults will not cause the drive to shut down. The
user must ensure that the application task tests the Flex I/O fault registers
(10/22 and 11/23) and forces appropriate action in the event of a fault.
FDBK OK (green) - When lit, this LED indicates that the Resolver & Drive I/O
board is receiving feedback from the resolver and that no
resolver feedback faults have been detected.
If the LED is off, it indicates a Resolver broken wire fault. The
resolver sine and/or cosine signals are missing due to a
broken wire, or the resolver gain tunable (RES_GAN%) has
been set too low.
Corresponding bit location: Register 202/1202, bit 8