Rockwell Automation SB3000 Universal Drive Controller Module - Manual (Page 16)

2-4 Universal Drive Controller Module
2.2.1 Status and Fault LEDs
The module faceplate contains six status and fault LEDs for diagnostic purposes. A
description of each of the LEDs follows.
CARD OK (green) - The CARD OK LED will turn on after the module’s power-up self
tests have been completed successfully. It will remain on unless there is a local
watchdog timeout or until power is cycled.
OS OK (green) - The OS (Operating System) OK LED will turn on after the UDC
operating system is loaded onto the module. It will remain on until power is cycled. On
subsequent power-ups, this LED will turn on to indicate that the OS is still resident on
the module. Note that this LED is also used to indicate any failure that may occur
during power-up diagnostics (see section 2.2.3). If the UDC module fails any of its
power-up diagnostics, it must be replaced.
COMM A OK and COMM B OK (green) - The Communication Status LEDs will turn on
after the UDC module has established communication with the PMI rack(s) over the
fiber-optic link(s). COMM A indicates the status of communication link A. COMM B
indicates the status of communication link B. When the LED is lit, it indicates that
messages are being received over that channel. Each channel operates
independently. If a channel is not being used, its LED will remain off.
DRV FLT A and DRV FLT B (red) - The Drive Fault LEDs are normally off. If a Drive
Fault LED is lit, it indicates that a Drive Shutdown fault has been detected for the drive
using that channel. When a drive fault is detected, a bit is set in register 202 for drive A
or register 1202 for drive B in the UDC module’s dual port memory. Bit 8 of the Drive
Status Register (200/1200) is also set. Refer to the appropriate Configuration and
Programming instruction manual for more information.
2.2.2 UDC Error Codes
The UDC module can generate three error codes which will be displayed on the
leftmost AutoMax Processor.
Error “38” indicates that the UDC module has generated a STOP ALL. If this error
occurs, refer to the UDC task error log for additional information regarding the error.
Error “39” indicates a UDC module interrupt allocation failed. In this case, try to cycle
power to the rack and re-load the rack configuration and application tasks.
Error “3A” indicates that the UDC module’s operating system and the AutoMax
operating system are not compatible. If this error occurs, re-load the most current
operating systems.
2.2.3 Power-Up Routine
When power is applied to the AutoMax rack, the UDC module performs the following
series of self tests: SRAM Write/Read test, Boot Checksum, Watchdog test, Dual Port
RAM Write/Read test, Timer/Counter test, and Serial Controller test. When all of the
tests are completed, the CARD OK LED will turn on. If a failure occurs, the OS OK
LED will flash rapidly to indicate that a self test failed.