DOLD LG5925.4861 Safety Door Safety Relay

Description

DOLD LG5925.4861 Safety Door Safety Relay

Product Dimensions：

The DOLD LG 5925.4861 (often referred to as part of the SAFEMASTER series) is a high-performance safety relay designed for emergency stop circuits and safety gate monitoring. It is a dual-channel device capable of meeting the highest safety requirements.

Here is the detailed product information in English:

1. Product Description

The LG 5925.4861 is a safety relay used to protect people and machines by providing a reliable disconnection of power in the event of an emergency. It features forcibly guided contacts and can be configured for either 1-channel or 2-channel wiring.

Key Features:

• Safety Category: Up to Category 4 / PL e (ISO 13849-1) and SIL 3 (IEC/EN 62061).

• Output Configuration: 3 N.O. (Normally Open) safety contacts and 1 N.C. (Normally Closed) monitoring contact.

• Control: Manual or automatic restart (selectable via switch S2).

• Monitoring: With or without cross-fault monitoring in the E-stop loop (selectable via switch S1).

2. Technical Parameters

3. Product Advantages

• High Versatility: Suitable for both emergency stop buttons and safety gate switches.

• Fault Detection: Includes line fault detection on the “On” button and cross-fault detection in the input circuit.

• Compact Design: The 22.5 mm width saves significant space in the control cabinet.

• Reliability: Uses forcibly guided contacts to ensure that N.O. and N.C. contacts can never be closed simultaneously, even in the event of a weld.

• User-Friendly: Features LED indicators for channel 1, channel 2, and supply voltage for quick troubleshooting.

4. Precautions & Safety Notes

[!IMPORTANT]

Monitoring Only: The N.C. contact (41-42) is for monitoring purposes only and must never be used in a safety-related feedback loop or for power disconnection.

• Wiring: Ensure that the cross-fault monitoring (Switch S1) is correctly set based on whether you are using 1-channel or 2-channel wiring.

• Short Circuit Protection: The device has internal PTC protection, but external fuses (Max 10A gL) are recommended for output contacts.

• Power Supply: Do not exceed the nominal voltage range to prevent damage to the internal VDR and PTC components.

• Environment: Ensure the operating environment stays within the temperature and humidity limits to prevent premature aging of the internal relays.

5. Applications

The LG 5925.4861 is widely used in industrial automation environments, including:

1. Emergency Stop Circuits: Protecting operators by stopping machinery instantly when an E-stop button is pressed.

2. Safety Gate Monitoring: Ensuring a machine cannot start or continue running if a safety door or gate is open.

3. Light Curtains: Integrating with optoelectronic protective devices.

4. Furnace Applications: Continuous operation according to EN 50156-1 for fuel supply disconnection.

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