Dold LG5925-48-61-24 Safety Relay Module

Description

Dold LG5925-48-61-24 Safety Relay Module

Product Dimensions：

The Dold LG 5925.48/61 AC/DC 24V is a high-performance Safety Relay from the SAFEMASTER series. It is specifically designed to monitor emergency stop (E-stop) buttons and safety gates, ensuring that a machine transitions to a safe state in the event of a fault or emergency.

Product Detailed Description

The LG 5925 is a dual-channel safety relay that complies with global safety standards. It features redundant circuitry with self-monitoring, meaning it can detect internal hardware failures. The configuration “48/61” typically refers to the specific terminal arrangement and contact configuration (3 NO / 1 NC), while the “24V” indicates the required operating voltage.

Technical Parameters

Product Advantages

• High Safety Integrity: Achieves the highest safety ratings (PL e / SIL 3), making it suitable for high-risk industrial machinery.
• Versatile Starting Modes: Can be configured for “Automatic Start” (useful for safety gates) or “Manual Monitored Start” (required for E-stop circuits to prevent unintended restarts).
• Cross-Fault Detection: Capable of detecting short circuits across the input channels, preventing the system from staying active if the wiring is damaged.
• Compact Footprint: At only 22.5 mm wide, it saves significant space on the DIN rail within the control cabinet.
• Removable Terminals: Often equipped with plug-in terminal blocks for faster replacement and easier maintenance.

Important Considerations (Precautions)

• Feedback Loop: For the relay to reset, the NC contacts of external contactors must be wired into the feedback loop (S33/S34) to ensure external devices haven’t welded shut.
• Voltage Fluctuations: Ensure the 24V supply is stable; significant drops can cause the relay to drop out, leading to nuisance machine trips.
• Contact Protection: To protect the internal relay contacts from welding, always use external fuses (typically 6A fast or 4A gG) in the output paths.
• Environment: Do not install in areas with high conductive dust or moisture without a NEMA/IP-rated enclosure.

Product Applications

The Dold LG 5925 is a “universal” safety relay used in:

• E-Stop Monitoring: The primary interface for emergency stop palm buttons on any industrial machine.
• Safety Gate Control: Monitoring limit switches or interlocks on protective doors and fences.
• Light Curtains: Interfacing with Type 4 light curtains to stop hazardous motion when a beam is broken.
• Packaging & Textile Machinery: Providing multi-zone safety logic for complex automated lines.

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