Phoenix Contact PSR-SCP-24DC/SIM4 Interface Module

The Phoenix Contact PSR-SCP-24DC/SIM4 interface module provides a reliable way to connect several safety sensors or switches with normally open or normally closed contacts to a safety relay. Designed for industrial safety applications, it combines four dual-channel inputs with diagnostic outputs and visible LED indicators to simplify system monitoring. With compact housing, screw connection technology, and compliance to international safety categories up to Cat. 3/PL d and SIL 2 (when paired with the master module), it ensures dependable integration for automation systems where safety and reliability are critical.

The Phoenix Contact PSR-SCP-24DC/SIM4 enhances machine and process safety by grouping up to four safety switches into one module, minimizing wiring complexity and installation effort. Its built-in diagnostic channels enable direct communication with control systems, helping operators quickly identify and resolve issues. Clear LED displays give real-time feedback on sensor status, reducing downtime and improving operational transparency. Engineered for industrial environments, it supports flexible installation in various mounting positions, operates within a broad temperature range, and provides long-term reliability. This leads to safer processes, reduced maintenance costs, and greater efficiency in demanding applications.

Why PSR-SCP-24DC/SIM4?
The PSR-SCP-24DC/SIM4 is chosen for its ability to unify multiple safety switches into a single, streamlined interface. It not only reduces wiring and complexity but also adds diagnostic transparency with LED status indicators. Built to industrial standards, it ensures safety compliance, reliability, and efficiency in modern automation systems where downtime is not an option.

What problem does it solve?
This module eliminates the challenge of managing multiple safety sensors individually by consolidating them into one robust unit. It solves issues of excessive cabling, unclear fault detection, and compliance hurdles. With real-time diagnostics and compatibility with safety relays, it ensures operators maintain full visibility and control over machine safety in demanding environments.

Key Features & Specifications – Phoenix Contact PSR-SCP-24DC/SIM4: Article 2981936

Download PSR-SCP-24DC/SIM4 – 2981936 Datasheet

Commercial Data – Phoenix Contact PSR-SCP-24DC/SIM4: Article 2981936

The Applications

1. Automated Packaging Line with Light Curtains & Gate Switches

In high-speed packaging lines, operators often need safe access for clearing jams or tool changes. Light curtains and gate switches are positioned to monitor entry points. By connecting these devices into a single safety interface module, the system immediately disables hazardous movement when a barrier is crossed. The module’s built-in diagnostics highlight the exact trigger point, reducing downtime and avoiding lengthy fault searches. Its compact size allows easy integration into crowded cabinets, while compliance with international safety standards ensures continuous protection without compromising productivity.

2. Robotic Welding Cell in Automotive Assembly

Car production uses robotic welding cells that must be safely controlled when humans enter the work area. Access doors, two-hand controls, and motion sensors are wired into the interface module, which communicates directly with the main safety relay. If a door opens or a control switch is released, the system halts all robot movement. The advantage lies in the diagnostic outputs and LED indicators that pinpoint the cause of the stop, so technicians spend less time troubleshooting. This improves worker safety while minimizing costly interruptions in continuous production environments.

3. Conveyor Safety in Food Processing Plants

Large conveyor systems in food factories rely on multiple safety inputs such as emergency stop buttons, guard doors, and pressure-sensitive mats. When combined through a safety interface module, all devices are continuously monitored in dual channels. If a fault or hazard occurs, the conveyor is immediately de-energized, preventing accidents. The pluggable screw connections make it quick to replace sensors during washdowns, a frequent requirement in food production. Clear status LEDs help maintenance teams identify the precise fault location, reducing downtime and keeping production safe and efficient.

4. Automated Storage & Retrieval Systems (ASRS) in Warehouses

Modern warehouses use shuttles and lifts to move pallets within tall storage racks. To protect maintenance staff and equipment, safety doors, proximity sensors, and emergency stops are distributed along the system. The safety interface module consolidates these signals and ensures any breach results in an immediate halt. Diagnostic outputs provide valuable information to the control system, enabling rapid detection of which safety device was activated. LED indicators support fast fault recognition, while the compact module footprint allows easy inclusion into control panels. This ensures compliance with strict safety requirements while maintaining smooth material flow.

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