Rockwell-automation 802B Small Precision Limit Switch Manual de usuario descargar pdf

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)

• 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)

1 2

Indice de contenidos

Pagina 1 - Mounting

Installation and Operating InstructionsBulletin 802B Small Precision Limit SwitchIMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE. This publication d

Pagina 2 - Location and Installation

Publication 75043–002–01(B)February 2001Printed in JapanVisit our web site at:http://www.ab.com/sensorsActuator ConsiderationLimit switches are design