Four Delayed Safety Outputs
The 440R-EM4R2D provides four normally open delayed electromechanical safety outputs for expanding the output capability of supported Guardmaster GSR safety relay systems.
Allen-Bradley 440R-EM4R2D Safety Relay Expansion Module 24V DC 4NO Delayed
Available in stock (400)
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$208.96
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Technical Specifications
| Brand | Allen-Bradley |
| Model Number | 440R-EM4R2D |
| Product Category | Safety Relay Expansion Module |
| Sub Brand | Guardmaster |
| Relay Model | EMD Delayed Output Expansion Module |
| Input | Single Wire Safety (SWS) |
| Terminal X1 Input | Single Wire Safety or OSSD, 50 mA |
| Terminal X2 Output | Single Wire Safety or OSSD, 50 mA |
| Delayed Safety Outputs | 4 N.O. Electromechanical Contacts |
| Power Supply | 24 V DC |
| Continuous Safety Output Current | 2 A at 24 V DC, DC-13 |
| Aggregate Output Current | 6 A Maximum |
| Power Consumption | 3.5 W |
| Timing Functions | On Delay, Off Delay, Jog |
| On/Off Delay Range | 100 ms–300 s |
| Jog Time Range | 100 ms–20 s |
| Performance Level | Up to PL e |
| Safety Category | Up to Category 4 |
| Terminal Type | Removable Screw Terminals |
| Wire Size | 0.2–2.5 mm² |
| Dimensions | 119.4 × 22.5 × 113.6 mm (H × W × D) |
Key Features
Configurable Timing Functions
The EMD module supports on-delay, off-delay and jog operating functions, configured using the switches on the front of the safety relay.
24V DC Control Supply
The module operates from a 24 V DC control supply and has a documented power consumption of 3.5 W.
Single Wire Safety
The primary input is Single Wire Safety, allowing the EMD module to expand outputs from supported Guardmaster GSR host safety relays.
SWS Expansion Output
An SWS output is provided so the safety signal can continue to additional supported expansion devices in the safety architecture.
22.5 mm Module Width
The compact 22.5 mm wide housing supports space-conscious DIN-rail safety control panel configurations.
Applications
- Delayed machine shutdown circuits
- Guardmaster GSR output expansion
- Timed safety output control
- Safety gate control sequences
- Controlled machine stopping functions
- Industrial machine safety panels
- Safety-related jog functions
- Automation safety control systems
Purchase Information
We support online purchase of the Allen-Bradley 440R-EM4R2D Safety Relay Expansion Module. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is Allen-Bradley 440R-EM4R2D?
The 440R-EM4R2D is a Guardmaster EMD delayed-output safety relay expansion module designed to expand the safety outputs of supported GSR host relays.
How many safety outputs does 440R-EM4R2D provide?
The module provides four normally open delayed electromechanical safety outputs.
What supply voltage does 440R-EM4R2D use?
The documented rated control supply voltage is 24 V DC.
What timing functions does 440R-EM4R2D support?
The EMD module can be configured for on delay, off delay or jog operation.
What is the on-delay and off-delay range?
The documented timing range for on-delay or off-delay operation is 100 ms to 300 seconds.
What is the jog timing range?
The documented jog timing range is 100 ms to 20 seconds.
What type of input does 440R-EM4R2D use?
Its primary evaluation input is Single Wire Safety. Terminal X1 is specified for Single Wire Safety or OSSD at 50 mA.
Does 440R-EM4R2D provide an SWS output?
Yes. Terminal X2 provides a Single Wire Safety or OSSD output rated at 50 mA for supported expansion architectures.
What is the maximum aggregate output current?
Rockwell Automation specifies a maximum aggregate output current of 6 A per module.
What safety performance level can the module support?
The module is specified for applications up to Performance Level e and Category 4 when applied within an appropriate safety architecture.
What is the difference between 440R-EM4R2D and 440R-EM4R2?
The 440R-EM4R2D is the EMD version with four delayed safety outputs and configurable timing functions, while the 440R-EM4R2 EM version provides four immediately operated safety outputs. Selection should be based on the required safety function and complete system design.
What should be checked before ordering 440R-EM4R2D?
Check the complete catalog number, 24 V DC supply, required delayed-output function, timing range, SWS architecture, four-output requirement, current ratings and terminal wiring requirements.
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