Rockwell Automation T3441A ICS Regent DC Digital Output Module 24 VDC - Manual (Page 4)

DC Digital Output Module (T3441A)
4
Industrial Control Services
Active and Fault Status Indicators
These green and red LEDs indicate the overall health of the
module. During normal operation, the green ACTIVE
indicator flashes at the controller’s scan rate. If a module
fault is detected the red FAULT indicator turns on and the
green ACTIVE indicator turns off.
Shutdown Indicator
Upon loss of communications with the controller, output
modules enter either a shutdown or hold fault mode. If the I/O
unit is set to shutdown, the red SHUTDOWN
indicator will
turn on when communications with the controller are lost. If
the I/O unit is set to hold, the SHUTDOWN indicator will
always be off (see page 8, Fault Mode Jumper).
When the module is installed in the I/O chassis or when logic
power (from the I/O power supply modules) is first applied to
the module, it will be in the shutdown mode until the first
output scan, regardless of the fault mode jumper settings.
Also, removing two I/O transceiver modules, two I/O power
supply modules, or two power legs will cause the module to be
in the shutdown mode.
Output Status Indicators
The output status indicators are yellow LEDs, located on the
field side of the output. There are 16 output status indicators,
— one for each output. These indicators are lit when the
output FET is energized to turn on the load.
Blown Fuse Indicators
The red BLOWN FUSE indicators turn on when one of the
fuses in the corresponding output group opens. A blown fuse
will also cause the module’s FAULT indicator to turn on.
Field power must be connected to the module for it to detect a
blown fuse. Refer to Maintenance, page 12, for fuse
replacement instructions.
Note: