KOLLOMORGEN S72402-NANANA-NA | For Safety Circuits

Description

Application Scenarios:

In an automated packaging line where operators need periodic access to clear jams, a hinged guard with a safety interlock switch protects a dangerous nip point. The ABB S72402-NANANA-NA-225​ monitors this switch. Its sophisticated dual-channel monitoring checks for faults like contact welding or wire short circuits. If the guard is opened, the module’s safety outputs de-energize, dropping out the main contactor and bringing the drive to a safe stop. Only after the guard is closed and a manual reset is activated does it allow a restart. This ensures that maintenance can be performed safely, directly addressing the core need for reliable safety interlocking and fault detection​ in industrial machinery.

Parameter:

Technical Principles and Innovative Values:

Innovation Point 1: Advanced Fault Detection with Cross-Circuit Monitoring.​ Unlike simple relays, the ABB S72402-NANANA-NA-225​ uses a two-channel input circuit with continuous mutual monitoring. It can detect not only open circuits but also dangerous cross-shorts between the two channels or to the supply voltage. This robust self-checking architecture is fundamental to achieving its high SIL 3 / PL e​ rating, ensuring a single fault does not lead to a loss of the safety function.

Innovation Point 2: Forced-Guided Relay Contacts for Safe Status Indication.​ The module incorporates a forcibly guided (mechanically linked) relay contact. This design guarantees that if the safety contacts weld shut in a dangerous failure, the auxiliary (normally open) contact cannot close. This provides a reliable, positively driven signal about the output relay’s state, which is crucial for complex safety circuits and diagnostic monitoring by a higher-level safety controller.

Innovation Point 3: Simplified yet Flexible Application.​ The S72402-NANANA-NA-225​ is designed for easy integration. It typically requires no complex programming; safety logic is hardwired through its terminal connections. Clear LED indicators for power, output status, and faults enable quick diagnostics. This combination of sophisticated internal safety and simple external application lowers engineering time and reduces the potential for configuration errors.

Application Cases and Industry Value:

Case Study: Robotic Work Cell Safety Interlocking.

A manufacturer integrated a new collaborative robot into a work cell but required a hard guard for high-speed operations. Three access doors were fitted with safety switches wired in series to a single ABB S72402-NANANA-NA-225​ safety relay. The relay monitored the entire loop. When any door opened, the safety circuit broke, the relay de-energized, and its contacts cut power to the robot’s servos. The built-in fault detection immediately identified a simulated short circuit during validation. The project lead noted: “Using the S72402-NANANA-NA-225​ gave us a certified, fault-detecting solution that was faster to implement than a safety PLC. It passed the risk assessment for PL d immediately and has operated flawlessly for over two years, ensuring safe access for tooling changes.”

Case Study: Press Brake Two-Hand Control Upgrade.

A metal fabricator needed to upgrade an old press brake to meet Category 3. PL d requirements. They installed a Type III C two-hand control station and connected it to an ABB S72402-NANANA-NA-225. The relay was configured to require both buttons to be pressed within 0.5 seconds, with anti-tie-down logic. The safety output was wired to a monitored contactor on the main drive. The maintenance supervisor stated: “The S72402 relay​ made the upgrade straightforward. The clear wiring diagram and LED diagnostics meant we could install and validate it in-house. It provided the required safety level with a reliable, dedicated device, avoiding the complexity and cost of a full safety controller for this single function.”

Related Product Combination Solutions:

ABB XS/ZB Series Safety Switches:​ Magnetic or mechanical safety gate switches and hinges that provide the dual-channel signal monitored by the S72402-NANANA-NA-225.

ABB Emergency Stop Buttons (e.g., XA系列):​ Mushroom-head E-Stop devices whose contacts are wired into the safety input loop of the S72402-NANANA-NA-225.

ABB PS 441 Safety Power Supply:​ A dedicated, monitored 24V DC safety power supply that provides a clean and reliable source for the S72402-NANANA-NA-225​ and its connected sensors.

ABB Safety Light Curtains (SR系列):​ Electro-sensitive protective devices whose OSSD outputs can be directly connected to the S72402-NANANA-NA-225​ for monitoring.

ABB Two-Hand Control Stations (e.g., ZB 7000):​ Devices that provide the required two-hand operation signals for the S72402-NANANA-NA-225​ to monitor.

ABB Guard Locking Switches:​ Safety switches that both monitor guard position and lock it closed, which can be integrated with the S72402-NANANA-NA-225​ for applications requiring guard locking for safety.

ABB Contactors/Relays:​ The power switching devices (e.g., AF series contactors) that are controlled by the safety outputs of the S72402-NANANA-NA-225​ to disconnect motor power.

Installation, Maintenance, and Full-Cycle Support:

Installation of the ABB S72402-NANANA-NA-225​ must be performed by qualified personnel following all applicable safety standards (e.g., ISO 13849. IEC 60204-1) and the detailed instructions in the manual. The module mounts on a standard 35mm DIN rail. Wiring involves connecting the 24V DC supply, the dual-channel safety inputs from devices like E-stops or gate switches, the safety outputs to the power control elements (e.g., contactor coils), and the auxiliary fault output. Correct cross-connection of the two input channels for fault detection is critical. The system must be validated through a complete functional test, including fault simulation (e.g., shorting a channel), to ensure correct operation.

Routine maintenance involves periodic functional testing of the entire safety circuit as required by law and the machine’s risk assessment. The module’s LEDs provide instant status: power, output state, and any detected fault. A fault condition must be investigated and rectified before the machine can be returned to operation. The module is not user-repairable; in case of failure, the entire unit is replaced. We supply the genuine ABB S72402-NANANA-NA-225​ with full technical documentation. Our support includes assistance with circuit design, validation checklists, and guidance to help you achieve a compliant and safe machine guarding system.

Implement a robust, standards-compliant safety function with a trusted component. Contact us for the genuine ABB S72402-NANANA-NA-225 safety relay and expert support for your machine safety application.