NX-SID800 8-Point Safety Input Unit PNP 24V SIL3 | Omron

The Original New Omron NX-SID800 is an 8-point safety input unit for the NX series I/O system, designed for SIL 3 (IEC 61508) and PLe / Category 4 (ISO 13849-1) safety applications. It features 8 PNP (sourcing) safety inputs rated at 24 V DC, 2 test outputs for sensor diagnostics, and screwless push-in terminals for tool‑free wiring. As part of the NX series safety I/O system, it supports Free-Run refreshingand is compatible with NX-series EtherCAT Couplers and Safety CPU units for integrated safety control in machine automation.

Core Engineering Highlights:
8 PNP safety inputs | 2 test outputs | SIL 3 (IEC 61508) / PLe Cat.4 (ISO 13849-1) | 24 V DC (20.4–28.8 V permitted) | 3.0 mA typical input current | 0 ms OFF/ON delay | Screwless push-in terminal block | 12 mm width | IP20 protection | 0°C to +55°C operating temperature | Free-Run refreshing

Key Features:

• Original New Omron NX-SID800 safety input unit

• 8 safety inputs (PNP, 24 V DC)

• 2 test outputs for sensor power supply and diagnostics

• SIL 3 (IEC 61508) and PLe / Category 4 (ISO 13849-1) certified

• 0 ms OFF/ON delay for fast response

• 3.0 mA typical input current

• 4-wire connection method

• Screwless push-in terminal block for tool‑free wiring

• 12 mm width for high-density mounting

• Removable terminal block for easy maintenance

• Free-Run refreshing for flexible I/O timing

• IP20 protection for control cabinet installation

• 90 g weight

Applications:

• Emergency stop and safety gate monitoring

• Light curtain and safety sensor integration

• Two-hand control systems and enabling switches

• Robot cell and conveyor safety circuits

• Machine safety applications requiring SIL 3 / PLe

• Distributed safety I/O for NX series systems

• OMRON special safety input devices support (e.g., D40A, D41D non-contact door switches)

Technical Specifications:

System Compatibility:

• Compatible with Omron NX series EtherCAT Coupler Units (NX-ECC20×)

• Compatible with NX series Safety CPU Units (NX-SL3300)

• Supports up to 63 NX I/O units per coupler

• Compatible with NJ/NX/NY series controllers (via EtherCAT with Safety CPU)

• OMRON special safety input devices: D40A, D41D non-contact door switches can be connected

Related Products:

• NX-ECC203 – NX series EtherCAT Coupler Unit, 2 ports, 125 µs cycle time

• NX-SL3300 – NX series Safety CPU Unit, 32 safety master connections

• NX-SOD400 – 4-point PNP safety output unit, 0.5A/point

• NX-SOH200 – 2-point safety output unit, 2.0A/point

• NX-TBA162 – Replacement screwless push-in terminal block, 16 terminals

• NX-AUX02 – Terminal block coding pins for NX I/O units

• NX-TBA082 – Replacement terminal block, 8 terminals, 10A

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Omron is a trademark of Omron Corporation.