Pilz 774400 Safety Relay

Description

Pilz 774400 Safety Relay

Product Dimensions：

The Pilz 774400 is a highly popular and reliable safety relay from the PNOZ s4 series. It is designed to monitor safety circuits in industrial environments, ensuring that machines are brought to a safe state if a fault or emergency is detected.

1. Product Description

The Pilz 774400 (PNOZ s4) is a standalone safety relay used for monitoring E-STOP pushbuttons, safety gates, and light beams. It features a compact design (only 22.5 mm wide) and uses microprocessor technology to provide high-level safety functions. It is known for its versatility, as it can be used in applications requiring up to SIL CL 3 and PL e.

2. Technical Parameters

Below are the core technical specifications for the 774400 model:

3. Key Advantages

• Space-Saving Design: The slim 22.5 mm housing allows for more components to be fitted into the control cabinet.

• High Safety Level: Meets the highest safety requirements (PL e and SIL 3), making it suitable for high-risk machinery.

• Flexibility: Includes a rotary switch on the front for easy configuration of manual/automatic reset and monitored/non-monitored start.

• Diagnostic LEDs: Clear LED indicators for power, input status, and faults allow for rapid troubleshooting.

• Plug-in Terminals: Simplifies wiring and allows for fast unit replacement without disconnecting every wire individually.

4. Important Considerations (Precautions)

• Voltage Supply: Ensure a stable 24V DC supply. Overvoltage can damage the internal electronics.

• Wiring Feedback Loops: If you are using external contactors, ensure the feedback loop (ext. device monitoring) is correctly wired to maintain the safety integrity level.

• Environment: Protect the device from excessive moisture, conductive dust, and extreme vibrations.

• Professional Installation: This device should only be installed and commissioned by qualified electrical personnel who understand safety standards.

5. Product Applications

The Pilz 774400 is widely used across various industries, including:

• Automotive: Monitoring emergency stop circuits on assembly lines.

• Packaging Machinery: Ensuring safety gates are closed before the machine starts.

• Food & Beverage: Protecting operators from moving parts in conveyor systems.

• Material Handling: Managing safety zones around robotic cells and palletizers.

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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