Rockwell Automation 440P-WA1A User Manual

Installation and Operating Instructions

IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.

This publication does not include all specifications, dimensions, or any special installation considerations.

Refer to the product catalog pages for additional information.

Lever arm with nylon roller

shown installed

11.1 (0.44)

6.3

(0.25)

15.3 (0.6)

2 (0.08)

Ø7 (0.28)

Ø13.5 (0.53)x5.2 (0.2)

Metal/Nylon Roller

(0.24)

25 (0.98)

Bulletin 440P-WA1 & 440P-WA1A Lever Arms

ATTENTION: To avoid electrical shock and 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.

General Data

• Designed for 440P-A short lever arm limit switches

• Metal or nylon roller available

• Roller diameter 13.5 mm (0.53 in.) x width 5.2 mm (0.2 in.)

• Lever arm radius 25 mm (0.98 in.)

• Lever arm length 40 mm (1.57 in.)

• Includes lock nut and washer

Principles, Standards, and Implementation

Operating specifications must be followed. Actuators should be displaced beyond the point where direct opening action occurs. If adjustable actuators become loose they may defeat the direct opening action feature of the limit switch. These devices are not to be used to directly control a motor.

IMPORTANT: Installation of Allen-Bradley limit switches should be in

accordance with local and/or national codes. Servicing energized industrial control equipment can be hazarous if not in accordance to recommended safety procedures.

ATTENTION: For safety applications

Rockwell Automation recommends replacing the complete limit switch.

Lever Arm Dimensions [mm (in.)]

Instructions

1. Mount lever arm on keyed shaft in desired position.

2. Install washer.

3. Install Hex lock nut.

4. Torque Hex lock nut to 1…1.4 N•m (8.85…12.39 lb•in).

Mounting Dimensions [mm (in.)]

Torque Specifications

Location Torque

8 mm Hex lock nut 1…1.4 N•m (8.85…12.39 lb•in)

ATTENTION: Under no circumstances must the switch

be actuated beyond the mechanical travel specified. Serious damage to the device and property could result.

Maintenance

These devices require little maintenance, but routine visual inspection is recommended to keep foreign debris from collecting on the exterior actuators and rollers.

Removing the operator head is not recommended as loose internal components may be lost or improperly re-installed.

Actuation Guidelines

The method of actuation and over travel has significant influence on the service life of the limit switch. To maximize the service life, it is recommended to provide an actuator with a 30° pressure angle and a surface hardness of RC-45 max.

Drwg. No. 10000101189 Ver 00

February 2011

Printed in USA