Installation Instructions
Original Instructions
Terminal Base for Bulletin 802T Plug-in Limit Switch
Bulletin Number 802T
ATTENTION: To avoid electrical shock and/or unintended
operation of equipment, disconnect all power to the limit
switch and the controlled equipment before proceeding with
any repair or adjustment of the limit switch.
These terminal bases are intended for use with the plug-in limit switch. Bases for
the two-circuit switch and for the four-circuit switch are available. Verify that the
proper base and switch are matched.
ATTENTION: On versions with a tapped conduit hole, position
the conduit that enters the switch such that any fluid inside
the conduit does not drain into the switch enclosure. Apply
sealing compound to conduit threads to help prevent entrance
of fluids through the threads.
There are two methods to mount the base:
•
Two #10-32 tapped holes are provided for rear mounting.
ATTENTION: Make sure that the screws that are used for rear
mounting are not so long as to interfere with the screws that
are used to secure the front to the base.
•
Two clearance holes for #10 screws are provided for front mounting.
ATTENTION: The contacts in each switching element must
have the same polarity. The circuit diagram is shown on the
nameplate.
IMPORTANT
The following does not apply to pre-wired cable-type
terminal bases.
The pressure-type connector terminals in the base accept 3.31 mm² (12 AWG) and
smaller solid or stranded wire. For proper tightening, we suggest not using
anything smaller than 0.823 mm² (18 AWG) wire. Before you insert the wire under
the pressure plates, strip the insulation approximately 9.52 mm (3/8 in.). To avoid
interference with the switch cover, tighten all pressure plate terminal screws
whether used or not. A grounding screw is in the terminal base enclosure near the
conduit opening. If the grounding screw has a self-lifting pressure plate and a wire
barrier, the proper position to install the ground wire is between the pressure plate
and the wire barrier in a direction parallel to the edge of the casting. Verify that the
ground wire does not interfere with the gasket or with the switch portion of the
device.
After wiring is complete, verify that all wires are in the wiring cavity of the terminal
block so they do not interfere with the switch when it is plugged into the terminal
block. Recheck all wiring terminal screws for tightness. After the switch has been
plugged into the terminal base, securely tighten the two cover screws
(20…25 in•lb) to compress the body gasket.
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Publication 802T-IN009B-EN-P - April 2021 | Supersedes Publication 802T-IN009A-EN-P - September 1973
Copyright © 2021 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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40060-045-02 Ver 06
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