Rockwell Automation 1771-OBDS DC(10-40V)Current Limiting Input Module Installation Instructions - Manual (Page 11)

DC (10-40V) Current Limiting Output Module 11
Publication 1771ĆIN033B-EN-P - July 2002
The individual output transistors are thermally protected against
overcurrent or overtemperature conditions. However, a module
overload may cause the single, replaceable onboard fuse to blow
when the module output exceeds 12A. The onboard fuse is not
intended to protect individual output transistors. You can replace the
onboard fuse as outlined below.
1. Turn off all power to the I/O chassis and all output device power
to the field wiring arm.
ATTENTION
!
Remove power from the 1771 I/O chassis
backplane and wiring arm before removing or
installing the module.
•
Failure to remove power from the backplane or
field wiring arm could cause module damage,
degradation of performance, or injury.
•
Failure to remove power from the backplane
could cause injury or equipment damage due to
possible unexpected operation.
2. Remove the module from the chassis and replace the blown fuse
with a 12A, 250V rectifier fuse (1/4 x 1-1/4 inch), Bussman part
number GBB12. The fuse is accessible through the side of the
module.
3. Replace the module in the chassis and attach the field wiring arm.
4. Turn system power ON.
Replacing the Fuse