Rockwell Automation 1771-WHF_WHFB Fused Field Wiring Arm Installation Instructions - Manual

1 Publication 1771-IN072B-EN-P - December 2004
Installation Instructions
Fused Field Wiring Arm
Cat. No. 1771-WHF and -WHFB
To the Installer This document describes:
• pre-installation considerations
• how to install the field wiring arm
• how to change a fuse on the field wiring arm
• product specifications
Pre-installation
Considerations The fused field wiring arm provides individual output circuit protection.
It allows simple fuse replacement without removing the field wiring arm from
the I/O chassis.
Two versions are available, both of which are interchangeable with the
1771-WH field wiring arm:
• 1771-WHF - this wiring arm uses a 3 A fuse for each output. The
maximum continuous current should not exceed 2.0 A per fuse.
• 1771-WHFB - this wiring arm uses a 1.5 A fuse for each output. The
maximum continuous current should not exceed 1.1 A per fuse.
IMPORTANT
Fused field wiring arms require more clearance than
the 1771-WH field wiring arms. If you are installing
in a cabinet, make certain that your installation has
sufficient clearance for this wiring arm.