Rockwell Automation 1771-WHF_WHFB Fused Field Wiring Arm Installation Instructions - Manual (Page 2)

Publication 1771-IN072B-EN-P - December 2004
2 Fused Field Wiring Arm Cat. No. 1771-WHF and -WHFB
The following figure shows the minimum dimensions from the back of the
1771 I/O chassis to the front of the fused field wiring arm and to the front of
a typical wire bundle.
Installing the Fused Field
Wiring Arm To install the fused field wiring arm:
1. Remove power from the wiring arm.
2. If replacing an existing wiring arm:
a. disconnect wiring from the terminals on the field wiring arm
b. release the tab securing the wiring arm to the module
c. swing the wiring arm downward and remove as shown in the
following figure
3. Snap the 1771WHF or -WHFB wiring arm on the horizontal bar at the
bottom of the chassis as shown in the following figure.
Top of Chassis
Back of Chassis
To end of fuse holders
Fused wiring arm
Fuse holder
Wire bundle
Maximum wire bundle
195.6mm
(7.70”)
209.6mm
(8.25”)
IMPORTANT
If your application requires a single power source for
all circuits on the 16-point output module, install the
jumper supplied with the wiring arm to connect the
first 4 terminals (A, B, C and D) together. Refer to the
specific installation data for your output module for
wiring information.