NX-SIH400

Overview of Omron NX-SIH400

The Omron NX-SIH400 is a safety input unit designed for integration into the NX I/O Bus system, providing advanced safety functions with 4 digital safety inputs and 2 test outputs. It operates with PNP-type sinking inputs at a rated voltage of 24 VDC and supports high connectivity with a compact design ideal for safety control in industrial automation systems.

Key Features of Omron - NX-SIH400

• Type of Module: Safety Input Unit compatible with NX I/O Bus.
• Number of Inputs: 4 digital safety inputs with PNP sinking type.
• Test Outputs: 2 sourcing outputs (PNP) for monitoring and diagnostics.
• Input Voltage: 20.4 to 28.8 VDC rated input voltage.
• Connection: Screwless push-in terminal block for secure and easy wiring.
• Dimensions: Slim form factor with 12 mm width, 100 mm height, and 71 mm depth.
• Weight: Approximately 90 grams for easy mounting and system integration.
• Safety Compliance: SIL3 according to IEC 61508 for high safety integrity in industrial applications.
• Protection: Dielectric strength of 510 VAC for 1 min between isolated circuits, insulation resistance of 20 MΩ min. at 100 VDC.
• Power Consumption: Low power consumption of approximately 0.70 W.
• Operation Method: Free-running I/O refreshing for continuous safety monitoring.

Technical Specs of NX-SIH400:

Applications / Use Case

The Omron NX-SIH400 safety input unit is used in safety control systems to monitor emergency stops, protective door switches, and light curtains. Its high safety integrity level and compact size make it ideal for integration into machine safety systems requiring reliable input processing and fault diagnostics.