Allen Bradley 440R-M23143 Guardmaster Monitors Security Relays
Allen Bradley 440R-M23143 Guardmaster Monitors Security Relays
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Brand:Allen Bradley PLC Item No.:440R-M23143 Product Origin:USA Product Dimensions:114.5 x 45 x 99 mm Product Weight:0.35 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen-Bradley 440R-M23143 Guardmaster Monitoring Safety Relay is part of Rockwell Automation’s industrial safety relay portfolio, designed to provide reliable monitoring and controlled shutdown functionality for machine safety circuits. It combines timing logic with safety input supervision to ensure machines enter safe states in a predictable and controlled manner.
This model is widely used in manufacturing environments where safety compliance, operational continuity, and controlled restart sequences are critical to production uptime and personnel protection.
Technical Specifications
Parameter
Specification
Model
440R-M23143
Product Type
Guardmaster Monitoring Safety Relay
Supply Voltage
24V AC/DC
Safety Inputs
1- or 2-channel configuration
Safety Outputs
2 immediate + 3 delayed outputs
Delay Range
0.15 – 3 seconds
Reset Mode
Automatic / Manual monitored
Mounting Type
DIN rail
Terminal Type
Plug-in / removable terminals
Protection Rating
IP20 terminals / IP40 enclosure
Operating Temperature
-5 to 55 °C
Response Time
~15 ms
Dimensions
114.5 × 45 × 99 mm
Weight
0.35 kg (0.77 lb)
Applications
The 440R-M23143 Guardmaster safety relay is commonly used in industrial safety systems where time-delayed or monitored safety functions are required:
Emergency stop circuit monitoring in automated machinery
Safety gate and guard door interlocking systems
Conveyor shutdown and restart delay control
Packaging and assembly line safety zoning
Machine reset and restart sequence supervision
Its delayed-output architecture makes it suitable for controlled stop sequences where immediate or timed safety responses are required.
Advantages
Integrated delay timing for controlled machine stop sequences
Supports both single-channel and dual-channel safety input configurations
Compact DIN rail housing for efficient control cabinet integration
High diagnostic capability for fault detection and system monitoring
Compatible with Guardmaster safety ecosystem for scalable architecture
Flexible reset modes (automatic or monitored manual reset)
Reliable performance in industrial electrical noise environments
Technical FAQs
1. What type of safety function does this relay provide?
It provides monitoring and timed safety relay functions for emergency stop and interlock circuits.
2. Does it support delayed safety outputs?
Yes, it includes configurable delayed safety outputs with timing ranges typically from 0.15 to 3 seconds.
3. Can it be used for E-stop circuits?
Yes, it is designed specifically for emergency stop monitoring applications.
4. Is it compatible with light curtains or safety sensors?
Yes, it supports monitoring of safety devices such as light curtains and interlock switches.
5. What reset modes are available?
It supports automatic reset and manual monitored reset configurations.
6. Can it operate on both AC and DC control voltage?
Yes, it supports 24V AC/DC control supply.
7. Is it suitable for multi-device safety chains?
Yes, it can monitor multiple devices typically wired in safety series configurations.
8. Does it include diagnostic indicators?
Yes, LED indicators provide status and fault diagnostics.
9. Can it be integrated into PLC systems?
Yes, it can be used alongside PLC-based safety architectures for input monitoring.
10. What type of mounting is used?
It is designed for standard DIN rail mounting in control cabinets.
