Overview of Pizzato Safety Relays Importance in Industrial Safety Pizzato Safety Relays are essential components in safeguarding machinery and personnel within automated systems. As safety…
Overview of Pizzato Safety Relays
Importance in Industrial Safety
Pizzato Safety Relays are essential components in safeguarding machinery and personnel within automated systems. As safety relays are mandatory in many safety-critical zones, they form the backbone of compliance with global safety standards such as ISO 13849 and IEC 62061. These relays ensure controlled logic for interlocked safety devices, emergency stops, guard doors, and two-hand control stations—key in achieving appropriate safety levels and minimizing risk.
Used in a wide range of industrial safety applications, Pizzato relays detect input signals like safety contacts or sensors and generate safe outputs to interrupt power, initiate shutdown sequences, or trigger alerts—ensuring reliable safety operations under all conditions.
Key Features and Benefits
Pizzato’s relay range is engineered for precise safety measures, with each unit offering robust timing circuits, dependable auxiliary contacts, and dual-channel input support. Features include:
- Output contacts (redundant or monitored) for diverse wiring schemes
- LED indicators for diagnostics and status monitoring
- Compatibility with safety timer modules and PLC logic
- Modular housing for efficient DIN-rail mounting
- Support for VDCPower consumption optimization in power-sensitive applications
Many models in the lineup include specialized timing options, configurable reset behaviors, and feedback loop monitoring, which contribute to high safety ratings and prevent faults from propagating across the control system.
Series Breakdown
Pizzato Safety Relay – CS AR Series
The CS AR Series, including models like the Pizzato CS AR-07M024, is tailored for emergency stop circuits and guard door monitoring with dual-channel input logic. Designed for machines requiring category 4 PL e safety, these units provide monitored relay outputs and configurable reset options, making them versatile for standalone use or PLC integration.
CA ST Series
The CA ST Series relays are ideal for time-controlled safety logic. With a variety of delay-on and delay-off timing circuits, these modules help manage events like machine coast-down or delayed restarts. Widely used in conveyor systems and rotating machinery, they offer configurable safety timer options while complying with the highest safety categories.
CS FS Series
The FS-5 Family Series in the CS FS lineup is known for managing light curtains, two-hand controls, and emergency shutdowns. With redundant output contacts and built-in self-monitoring, they are perfect for achieving SIL3/PLe safety integrity in complex applications. The FS models also offer fast response times and high fault tolerance, making them suitable for high-cycle environments.
CS DM Series
The CS DM Series features compact safety modules built for basic features like single-channel emergency stops and contact monitoring. These modules are ideal for OEMs and machine builders needing a cost-effective solution for localized safety tasks. Despite their size, they include all essential protection functions with space-saving design.
CS AM Series
Part of the advanced automation suite, the CS AM Series integrates with programmable logic to support dynamic safety management. They’re often paired with modular safety switches – control modules and are perfect for systems requiring safety logic that adjusts with machine states. These relays support variable delay functions and adaptive reset conditions.
CS AT Series
The CS AT Series specializes in managing interlocked safety devices with integrated diagnostics and short-circuit detection. These relays often work alongside RFID-coded safety switches or magnetic interlocks, offering enhanced manipulation resistance and verified actuator presence. Ideal for guarding large machinery and robotic cells.
CS ME Series
The CS ME Series includes multifunction relays for systems that combine safety and standard control logic. These units are typically used in machine tools, packaging equipment, and materials handling lines where integration with both manual and automated modes is essential. They support detailed configuration for various safety applications and ensure full redundancy and self-checks.
How Pizzato Relays Improve Safety
Practical Application Examples
Pizzato relays are engineered to provide reliable safety operations across various real-world use cases. In robotic welding cells, for example, safety relays monitor interlocked gate switches and emergency stop buttons, ensuring immediate power cutoff during unauthorized access or fault detection. In packaging lines, safety timer modules manage delay-on and delay-off sequences to protect workers during machine deceleration or system reset.
Other use cases include:
- Two-hand control for press machines using CS FS Series relays
- Access zone protection in palletizers using CS AT Series and RFID interlocks
- Redundant shutdown systems on conveyors with dual output contacts and monitored feedback
Each relay ensures compliance with machine-specific safety levels, contributing to reduced risk and enhanced machine operation safety.
Safety Standards and Compliance
All Pizzato relays conform to stringent safety standards, including EN ISO 13849-1 and IEC 61508. Their designs enable compliance with categories up to PL e / SIL 3, making them suitable for both standalone machines and networked industrial installations. Integrated features like auxiliary contacts, feedback loops, and LED diagnostics assist in precise safety measures while simplifying commissioning and audits.
Because safety relays are mandatory in many automated and hazardous areas, using Pizzato components supports legal compliance and promotes best practices in industrial safety applications. Certifications for each product are accessible via datasheets, making it easy for OEMs and integrators to validate system-wide conformity.
Frequently Asked Questions
Common Issues and Solutions
Q: Why is my Pizzato relay not resetting after an emergency stop?
A: Check that the monitored auxiliary contact circuit is properly wired and the reset input logic matches the selected configuration. Some relays require power cycling or specific input timing to reset.
Q: Can I use the CS AR Series with RFID switches?
A: Yes, provided that the safety inputs IS1–IS2 are compatible with the switch’s output logic. Ensure the switch includes a dual-channel safety output to match the relay’s requirements.
Q: What’s causing inconsistent response from my safety timer module?
A: Ensure that the timing circuit delay is correctly configured and not exceeding the permitted margin. Review environmental factors like temperature or fluctuating VDCPower consumption that may affect performance.
Enhancements in Safety Systems
Recent Pizzato innovations include:
- Relays with auto-diagnosing output contacts
- Dynamic feedback line monitoring
- Adaptable timing settings for hybrid operations
- Integration-ready designs for PLC or IO-Link ecosystems
These enhancements improve the effectiveness of safety switch – control module integration, reduce wiring errors, and increase the speed of system validation during installation. As industrial safety demands grow, Pizzato continues to deliver hardware that is intelligent, configurable, and compliant with evolving safety ratings and performance expectations.
