Rockwell Automation 61C350 2-In/2-Out 0-10 Volt Analog Rail Module - Manual (Page 36)

5Ć2
DANGER
DO NOT TOUCH THE CONNECTORS ON THE FACEPLATE IF THERE IS POWER
ON THE WIRES ATTACHED TO THE PLUG CONNECTOR SCREW TERMINALS.
ALWAYS TURN OFF POWER BEFORE HANDLING A CONNECTOR THAT IS
WIRED. FAILURE TO OBSERVE THIS PRECAUTION COULD RESULT IN SEVERE
BODILY INJURY OF LOSS OF LIFE.
Step 2. Turn off power to the module. Verify that the input power
connector is connected securely to the faceplate. Verify
that the I/O Rail cable connections are tight at both ends.
Step 3. Turn on power to the module. If the LEDs are still off, try
replacing the I/O Rail cable. Check that the input
connector pins are not bent.
Step 4. If the LEDs are still off, turn off power to the module and
replace the power supply fuse on the front panel
following the directions below.
CAUTION
MAKE CERTAIN THAT THE ANALOG RAIL MODULE CONTAINS THE PROPER
FUSE FOR THE POWER SUPPLY BEING USED. USE A .25 A FUSE FOR 120 VAC
POWER AND A .75A FUSE FOR 24 VDC POWER. FAILURE TO OBSERVE THIS
PRECAUTION COULD RESULT IN DAMAGE TO OR DESTRUCTION OF THE
EQUIPMENT.
a) Use a screwdriver to release the fuse holder located
on the Analog Rail module faceplate. Pull the fuse
holder out of the module.
b) Take the old fuse out of the fuse holder and replace it
with the new fuse. Use a .25A fuse for 120 VAC power
and a .75A fuse for 24 VDC power. See Appendix A for
the fuse type and rating.
c) ReĆinsert the fuse holder into the module. Turn the
screwdriver clockwise while pressing down on the
fuse holder. The fuse holder must be flush against the
faceplate.
Step 5. Turn on power to the module. If both LEDs still do not
light, replace the module.
5.2 The COM OK" LED is Off
Problem: The COM OK" LED on the faceplate is off. This LED
signifies whether there is communication between the Analog Rail
and the host. The LED should be on if communication is taking
place. The possible causes of this problem are incorrect
configuration, a disconnected or malfunctioning I/O Rail cable, a
malfunctioning host, or a malfunctioning Analog Rail module. After
verifying that the configuration of the Analog Rail is correct, follow
the steps below to isolate the problem.
Step 1.
Stop any application programs or tasks that are running
and turn off power to the Analog Rail module.