Omron NX Series safety I/O unit, NXSIH400VER11, 4 digital inputs, Category 4/PLe/SIL3, 24VDC supply, spring terminal, DIN Rail mount, bulk package.
| Parameter | Value |
|---|---|
| Series | NX |
| Controller type | General Purpose |
| Parameter | Value |
|---|---|
| Safety category (Cat / PL / SIL) | Category 4, PLe, SIL3 |
| Parameter | Value |
|---|---|
| Inputs (count and type) | 4 - Digital |
| Parameter | Value |
|---|---|
| Supply voltage | 24VDC |
| Termination style | Spring Terminal |
| Parameter | Value |
|---|---|
| Mounting type | DIN Rail |
| Parameter | Value |
|---|---|
| Operating temperature range | 0°C~55°C |
| Parameter | Value |
|---|---|
| Features | Test Output |
The Omron NXSIH400VER11 is a safety digital I/O unit with 4 digital inputs, rated to Category 4, PLe, SIL3. It sits on the NX backplane, draws 24VDC supply, and terminates through spring terminals. The DIN Rail mount and bulk packaging suit volume panel builds. The Test Output feature allows the safety controller to verify input circuit integrity during operation — useful for maintaining SIL3 loop diagnostics without external pulse testers.
It is rated for Category 4, PLe, and SIL3 — the highest performance level per ISO 13849-1 and IEC 62061. Suitable for safety functions like emergency stop and light curtain monitoring.
Runs on 24VDC supply. Termination is via spring terminals — no screw torque required, faster wiring in high-density cabinets.
Rated for 0°C to 55°C ambient. Adequate for most indoor control panels; derate or forced cooling needed above that.
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