Rockwell Automation 440P-WM1A 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.

Short lever shown installed.

Bulletin 440P-WM1 & 440P-WM1A Short Lever

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-M short lever limit switches

• Metal or nylon roller available

• Roller diameter 17.5 mm (0.69 in.) x width 7 mm (0.28 in.)

• Lever radius 35 mm (1.5 in.)

• Lever length 55 mm (1.77 in.)

• Includes Allen head screw

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.

Approximate Dimensions [mm (in.)]

Instructions

1. Mount lever on shaft in desired position.

2. Torque Allen head screw to 1.5…2.1 N•m
(13.28…18.59 lb•in).

Mounting Dimensions [mm (in.)]

Torque Specifications

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.

Location Torque

4 mm Allen head screw 1.5…2.1 N•m (13.28…18.59 lb•in)

Drwg. No. 10000101185 Ver 00

February 2011

Printed in USA