Rockwell Automation 802T Plug-In Limit Switch with Indicating Light - Manuel

INSTALLATION AND OPERATING INSTRUCTIONS
BULLETIN 802T, PLUGĆIN LIMIT SWITCH WITH INDICATING LIGHT
GENERAL
These instructions cover the style of limit switch which contains
an indicating light. This light can be wired to provide a visual indi-
cation of switch contact action.
The switch is available with either a 120VAC lamp circuit or a
240VAC lamp circuit. The rated voltage of each device is dis-
played on the switch cover inside the enclosure.
The lamp in this device cannot be replaced separately. If lamp
replacement should be necessary, a new switch module and
lamp assembly must be ordered as a renewal part.
MOUNTING
Position the conduit entering the switch such that any fluid inside
the conduit will not drain into the switch enclosure. Apply sealing
compound to conduit threads to prevent against entrance of
fluids through the threads.
The base may be mounted by either of two methods:
1. Two #10–32 tapped holes are provided for rear mounting.
2. Two clearance holes for #10 screws are provided for
front mounting.
WIRING
The pressure type connector terminals in the base will accept
No. 12 AWG and smaller solid or stranded wire. For proper tight-
ening, it is suggested that nothing smaller than No. 18 AWG be
used. Before inserting wire under the pressure plates, strip the
insulation approximately 3/8 inch. Tighten all pressure plate ter-
minals whether used or not, to avoid interference with the switch
cover.
A grounding screw is located in the terminal base enclosure near
the conduit opening. If the grounding screw has a self lifting pres-
sure plate and a wire barrier, the proper installed position of the
ground wire is between the pressure plate and the wire barrier
in a direction parallel to the edge of the casting. Be sure the
ground wire does not interfere with the gasket or with the switch
portion of the device.
The indicating light must be wired to a power source by the user.
Lead wires must be provided which connect to Terminals #5 and
#6 in the terminal block. The other ends of these leads are con-
nected to points in the circuit which will provide the indicating
function desired by the user.
If the indicating light is to be connected internally to the limit
switch terminals, always connect the indicating lamp lead wires
to the same set of terminals used for the load. When connected
across the normally open Terminals #1 and #2, the light will be
on with the limit switch in its unoperated state. When connected
across the normally closed Terminals #3 and #4, the light will be
off with the limit switch in its unoperated state. See Figure 1 for
typical circuit configurations.
After wiring has been completed, check that all wires are in the
wiring cavity of the terminal block so they will not interfere with
the switch when it is plugged into the terminal block. Recheck all
wiring terminal screws for tightness.
Note: For switches which have been factory wired, check wire
color and their position in the terminal block for proper cir-
cuit hookup.
When the switch has been plugged into the terminal block, se-
curely tighten the two cover screws to compress the body
gasket.
1 2
5 6 LOAD
3 4
5 6 LOAD
1 2
5 6 LOAD
1 2
5 6 LOAD
1 2
5 6 LOAD
1 2
3 4 6
LOAD
5
INTERNAL CONNECTION TO N.O.
CONTACT LIGHT ON WHEN
SWITCH IS UNOPERATED
INTERNAL CONNECTION TO N.C.
CONTACT. LIGHT OFF WHEN
SWITCH IS UNOPERATED.
WILL NOT LIGHT IF AN EXTERNAL
SERIES CONTACT IS OPEN.
LIGHT ON WHEN EITHER
CONTACT IS OPEN.
INDICATE LOAD ENERGIZED.
SIMILAR CONNECTION CAN BE
MADE WITH N.C. CONTACT.
ALTERNATE CONNECTIONS TO
ISOLATE THE LIGHT FROM THE
LOAD CIRCUIT IF LEAKAGE
CURRENT THROUGH THE LOAD
IS UNDESIRABLE.
LIGHT ON WHEN SWITCH IS
UNOPERATED. SIMILAR
CONNECTION CAN BE MADE
WITH LOAD AND LIGHT
CONNECTIONS REVERSED.
NOTE: Numbers correspond to
terminal block markings.
FIGURE 1
ACTUATOR HEAD POSITIONING
The actuator head may be placed in any of four positions on the
switch body. Loosen the four captive screws. Place the head in
the desired position and securely retighten the four screws. (See
Figure 2 below).
FIGURE 2
WARNING: To avoid electrical shock and/or unin-
tended operation of equipment, disconnect all
power to the limit switch and the controlled equip-
ment before proceeding with any repair or adjust-
ment of the limit switch.
CAUTION: If used with solid state or other sensitive
devices, leakage current may cause false operation.
Approximate leakage current: .002 Amps with 120
Volt indicating lights and .005 Amps. with 240 Volt
indicating lights.
CAUTION: Make sure the screws used for rear
mounting are not so long as to interfere with the
screws used to secure the front to the base.
CAUTION: The contacts in each switching element
must have the same polarity. The circuit diagram is
shown on the nameplate