Description
440G-LZ Allen Bradley Guard Locking Switches
Product Dimensions：
The Industrial Automation Glossary contains terms and abbreviations used by
Rockwell Automation to describe industrial automation systems. Below is a list
of specific terms and abbreviations used in this manual.
NC No connection
N.C. (Normally
Closed)
An electrical contact whose normal state (for example, no
pressure or electrical potential applied) is in the closed
position.
N.O. (Normally
Open)
An electrical contact whose normal state (i.e., no pressure
or electrical potential applied) is in the open position.
PLC A programmable logic controller or a programmable
automation controller.
PTL (Power to
Lock)
Apply 24V to the lock command to lock the switch. This
command applies to the 440G-LZ switch.
PTL (Power to
Release)
Apply 24V to the lock command to unlock the switch. This
command applies to the 440G-LZ switch.
Reaction Time
Describes the time between the true state of the input to
the ON state of the output.
Response Time
Describes the time between the trigger of the input to the
OFF state of the output. Throughout this manual, the
safety outputs may be described as turning off
immediately. This means that the safety outputs will turn
off within the response time.
RFID Radio frequency identification.
OSSD (Output
Signal Switching
Device)
Typically a pair of solid-state signals pulled up to the DC
source supply. The signals are usually tested for short
circuits to the DC power supply, short circuits to the DC
common, and short circuits between the two signals.
Standard coding Same as Low coding as defined in EN ISO 14119:2013
440G-LZL 440G-LZ power-to-lock guard locking switch
440G-LZR 440G-LZ power-to-release guard locking switch
Unique coding Same as High coding as defined in EN ISO 14119:2013
Use this manual to design, install, program, or troubleshoot systems that use
the Guardmaster® 440G-LZ guard lock safety switches.
You are required to have a basic understanding of electrical circuitry and
familiarity with safety-related control systems. If you do not, obtain the proper
training before using this product.
Purpose of This Manual This manual is a reference guide for the Guardmaster 440G-LZ guard locking
switch. It describes the procedures you use to install, wire, and troubleshoot
your switch. This manual:
• Explains how to install and wire your 440G-LZ switch, and
• Provides an overview of the Guardmaster 440G-LZ guard locking switch.
Conventions Used in This
Manual
The following conventions are used throughout this manual:
• Bulleted lists such as this one provide information, not procedural steps.
• Numbered lists provide sequential steps or hierarchical information.
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