Description
440R-G23110 A-B Monitoring Safety Relay
Product Dimensions：
Product Description (Detailed Explanation)
The 440R-G23110 is a multi-function safety relay that simplifies the monitoring of safety devices such as E-stops, light curtains, and safety gates. Its primary specialty is Guard Locking management. It provides a logic-controlled delay, ensuring that a machine has come to a complete standstill before a safety gate can be unlocked.
This relay features a compact 22.5mm housing and is part of the “Smart” safety line, which allows for easy integration with other GSR relays via a unique optical bus connector. It provides two “Safety Outputs” (OSSD) and includes a specialized “Time Delay” rotary switch on the front face for easy field adjustment.
Product Parameters (Technical Specifications)
| Parameter Category | Specification |
| Input Voltage | 24V DC (-15% / +10%) |
| Safety Inputs | 1 Dual-Channel or 2 Single-Channel inputs |
| Safety Outputs | 2 N.O. (Normally Open) Solid State (OSSD) |
| Auxiliary Outputs | 1 N.C. (Normally Closed) Solid State (Non-safety) |
| Time Delay Range | Adjustable (0.1 seconds to 300 seconds) |
| Housing Width | 22.5 mm |
| Mounting | 35mm DIN Rail |
| Reset Type | Automatic/Manual or Monitored Manual (Selectable) |
| Safety Rating | PLe, Cat 4 (EN ISO 13849-1), SIL CL3 (IEC 62061) |
Product Advantages (Key Benefits)
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Integrated Time Delay: Eliminates the need for a separate timer relay, reducing wiring complexity and cabinet space.
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Versatile Configuration: A single unit can be configured for many different safety functions using the rotary switches on the front.
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Optical Bus Link: Can be connected to other GSR modules using the side-mounted optical link, allowing “Global” E-stop signals to be shared across multiple relays without hardwiring.
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High Safety Integrity: Meets the highest global standards (PLe/SIL 3), making it suitable for high-risk industrial environments.
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Diagnostic LEDs: Features clear status indicators for power, inputs, and outputs, which significantly speeds up troubleshooting on the plant floor.
Precautions (Important Notes)
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Wiring Orientation: Always verify the wiring for the S11/S21 test pulses; incorrect wiring of the dual-channel inputs can lead to “Cross-fault” errors.
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Time Delay Setting: Ensure the time delay is set to a duration longer than the machine’s actual coast-to-stop time to prevent premature access to moving parts.
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Load Current: The solid-state OSSD outputs have a maximum current limit (typically 0.5A). If you need to switch high-current motors or large contactors, use an external interposing relay (like the 440R-EM series).
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Power Supply: Use a PELV or SELV rated 24V DC power supply to maintain the safety certification integrity.
Product Applications (Typical Use Cases)
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Guard Locking Systems: Controlling the solenoid on a safety gate for high-inertia machinery (like large CNC spindles or flywheels) that continues to rotate after power is removed.
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Robotic Cells: Managing the entry/exit sequence for personnel into a robot’s working envelope.
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Material Handling: Providing a controlled stop for long conveyor lines to prevent jams before allowing access to the track.
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Safety Mat & Light Curtain Monitoring: Serving as the central logic unit for presence-sensing safety devices.
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Delayed Power-Down: Used in processes where a controlled shutdown is required for equipment cooling or data saving before the safety circuit is fully opened.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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