Rockwell Automation 802B Small Precision Limit Switch - Manual

Installation and Operating Instructions
Bulletin 802B Small Precision Limit Switch
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
This publication does not include specifications, dimensions, and other installation considerations.
Refer to the product catalog pages for additional information.
!
WARNING: 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.
Overview
Limit Switches are used in electrical control systems to sense
position. They are actuated by the predetermined motion of a
cam, machine component, or piece part. This mechanical
motion is then converted to an electrical signal through the
actuation of a set of contacts. These signals can be used in
the control circuits of solenoids, control relays, and motor
starters to control the operation of conveyors, hoists,
elevators, machine tools, etc. They are not to be used to
directly control a motor.
General Data
•
Enclosure Rating: NEMA 1, 3, 4, 6, 13 and IP67
•
Mechanical Life: Approx. 10,000,000 operations Ê
•
Electrical Life: Approx. 500,000 operations (10A 250V AC,
resistive load)
Ê
•
Operating Speed
G Top Push: 0.05mm to 0.5m per second
•
Operating Frequency:
G Mechanical: 120 operations/minute
G Electrical: 20 operations/minute
•
Operating Temperature: –10
°
C to 80
°
C (14
°
F to 176
°
F)
with no icing
•
Short Circuit Protection: Quick blow fuse suitable for rated
current is recommended.
Ê Life expectancy has been calculated at an operating temperature
of 20
°
C (68
°
F) and an operating humidity of 65%.
Mounting
Units should be mounted using the mounting holes provided.
These mounting holes are located on the side of the limit
switches. The mounting holes are spaced 25.4mm (1in) center
to center. The holes will accept an M4 mounting screw. Top
push units without sealing boot, may be panel mounted using
the M14 mounting nuts provided. When side mounting a
switch that has the capabilities of panel mounting, remove the
hex nuts provided with the switch.
Mounting Torque Specifications
Hardware Torque
Terminal Screw 0.78 to 1.18 N@m
Panel Mounting Nut 4.90 to 7.84 N@m
Side Mounting Screw 1.18 to 1.47 N@m
Wiring
•
Arrange control wiring according to terminal markings.
•
Tighten terminal screws according to specifications
•
Only use insulated conductors
•
Each limit switch includes a rubber cable gland for sealing.
This gland will accept wire diameters of 8.5 to 10.5mm.
•
Grounding may be achieved though the mounting
hardware per NEC.
25.4 (1.0)