PILZ 750104 Safety Relay Module - Compact Emergency Stop Control Unit for Industrial Automation

Engineered for reliable safety control in industrial automation, the PILZ 750104 is a compact safety relay module designed to manage emergency stop (E-STOP) functions and safety-critical circuits. As part of PILZ’s trusted safety relay series, the 750104 delivers fail-safe performance with redundant relay technology, ensuring machinery stops safely in critical situations. Its space-saving design, straightforward wiring, and compliance with international safety standards make it an ideal choice for small to medium-sized machines, production lines, and equipment requiring efficient emergency protection. The PILZ 750104 is a German-engineered solution with global availability, offering immediate stock, one-year warranty, and seamless integration with common control systems.

​Key Technical Specifications​

​Advanced Design Features​

• ​Redundant Safety Contacts: Dual relay contacts (1 NO + 1 NC safety + 1 NC auxiliary) ensure reliable emergency stop signal transmission and circuit monitoring for fail-safe operation.
• ​Compact & Space-Saving: Optimized design for easy integration into small control panels or compact machinery without sacrificing safety performance.
• ​DIN Rail Mounting: Standard 35mm DIN rail mounting allows quick and secure installation in industrial control cabinets.
• ​Wiring Error Detection: Built-in circuit checks help identify incorrect wiring during setup, reducing commissioning errors and enhancing safety.
• ​Overvoltage Protection: Integrated safeguards protect against voltage spikes, ensuring reliable operation in unstable power conditions.
• ​German Engineering: Designed and manufactured in Germany, meeting stringent quality and safety requirements for global industrial applications.

​Industrial Applications​

• ​Emergency Stop Systems: Primary control for E-STOP buttons on small to medium-sized machinery, ensuring immediate and safe machine shutdown.
• ​Production Machinery: Safety circuits for CNC machines, packaging equipment, printing presses, and assembly lines.
• ​Material Handling: Conveyor systems, robotic workcells, and automated guided vehicles (AGVs) requiring emergency stop functionality.
• ​Industrial Equipment: Safety integration for pumps, compressors, and process machinery in manufacturing plants.
• ​Workshop & Laboratory Machines: Protection for tools and test equipment in industrial and research environments.

​Performance Advantages​

• ​Fail-Safe Reliability: Redundant relay design minimizes the risk of failure, ensuring emergency stop commands are executed reliably every time.
• ​Quick Installation: Simple wiring and DIN rail mounting reduce setup time and maintenance efforts.
• ​Compliance Assurance: Meets key international safety standards (EN ISO 13849-1, IEC 60204-1), ensuring legal and regulatory compliance.
• ​Enhanced Safety Monitoring: Wiring error detection helps prevent incorrect installation, enhancing overall system safety.
• ​Global Support: Backed by PILZ’s worldwide technical support network and authorized distributors for reliable service.

​Design Considerations​

1. ​Circuit Integration:

   • Wire the 750104 in series with E-STOP buttons and machine control circuits to ensure all emergency stop signals are monitored and acted upon.
   • Connect safety contacts to critical machine shutdown paths, and use auxiliary contacts for status indication or external monitoring.

2. ​Power Supply:

   • Ensure a stable 24V DC supply is provided to the relay module, with appropriate decoupling capacitors near the module to minimize electrical noise.
   • Verify compatibility with your control system’s power output specifications.

3. ​Emergency Stop Button Compatibility:

   • Use properly rated E-STOP buttons (normally closed, self-monitoring type) that meet relevant safety standards for reliable operation with the 750104.
   • Ensure E-STOP circuits are hardwired and not dependent solely on software or programmable logic for fail-safe performance.

4. ​Wiring Best Practices:

   • Follow color-coded wiring conventions for safety circuits (e.g., yellow/green for E-STOP) to simplify identification and troubleshooting.
   • Keep safety circuit wiring separate from standard control wiring to prevent interference and maintain signal integrity.

5. ​Maintenance & Testing:

   • Regularly test the emergency stop function (at least once per shift or as per site safety procedures) to ensure the 750104 and associated circuits are operational.
   • Inspect wiring and connections periodically for signs of wear, damage, or loose contacts that could compromise safety performance.

​Future-Proof Engineering​

• ​Long-Term Availability: As a German-engineered PILZ product, the 750104 benefits from long-term supply commitments and continuous technical support.
• ​Standards Compliance: Designed to meet current and upcoming safety regulations, ensuring your systems remain compliant with minimal upgrades.
• ​Scalability: Can be integrated into larger safety systems or upgraded with additional PILZ safety modules for more complex protection requirements.
• ​Authorized Support Network: Backed by a global network of authorized distributors and PILZ technical experts for reliable service and advice.

Tags: Industrial Safety, Emergency Stop, Safety Relay, DIN Rail Mount, Machinery Protection, Compact Control, PILZ