Rockwell Automation 802B Precision Limit Switch - Manual

Installation and Operating Instructions
Bulletin 802B 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:
G
NonBooted: NEMA 1, and IP60
G Booted: NEMA 1,3,4, and IP65
•
Mechanical Life: Approx. 10,000,000 operations Ê
•
Electrical Life: Approx. 500,000 operations (15A 250V AC,
resistive load)
Ê
•
Operating Speed
G Top Push: 0.01mm to 0.5m per second
G Lever Type: 0.02mm 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 5
°
C to 35
°
C (41
°
F to 95
°
F) and an operating humidity of 40% to
70%.
Mounting
Units should be mounted using the mounting holes provided.
These mounting holes are located on the sides of the side
mounted limit switches and on the flange of the flange
mounted limit switches. All side mounted limit switches come
with two #6 mounting screw hardware provided. To ensure
proper sealing around the mounting screws, always use the
O-rings and washers provided.
Hardware Torque
Terminal screws 0.78 to 1.18N@m
Cover mounting screw 1.18 to 1.37N@m
Lever tightening nut 4.90 to 5.88N@m
Switch mounting screw (side/flange mounting) 1.18 to 1.37N@m
Connector/Conduit 1.80 to 2.20N@m
Roller Arm Adjustments
1. The roller arm may be adjusted freely within a range of
225
°
. This may be accomplished by loosening nut #1.
2. The roller arm may also be rotated 360
°
by loosening nut
#2.
225_
2
1
Wiring
•
Grounding of switch should be achieved per NEC
requirements. Grounding terminal is located in switch
cover.
•
Arrange control wiring according to terminal markings.
•
Tighten terminal screws according to specifications
•
Only use insulated connectors