Safety I/O Unit
NX-SI / SO
Build a simple and flexible safety system
Safety I/O Unit
Safety Input Units
Unit type | Ap- pear- ance | Specification | Unit version | Model | ||||||
Number of safety input points | Number of test output points | Internal I/O common | Rated input voltage | OMRON special safety input devices *1 | Number of safety slave con- nections | I/O re- freshing method | ||||
Safety Input Units |  | 4 points | 2 points | Sinking inputs (PNP) | 24 VDC | Can be connected. | 1 | Free-Run refreshing | Ver. 1.1 | NX-SIH400 |
 | 8 points | 2 points | Sinking inputs (PNP) | 24 VDC | Cannot be connected. | 1 | Free-Run refreshing | Ver. 1.0 | NX-SID800 | |
*1 OMRON special safety input devices refer to devices listed below. These devices can be connected directly to the
NX-SIH400 without any dedicated controller. Refer to the NX-series Safety Control Unit User's Manual (Cat. No. Z930) for
NX-SIH400 without any dedicated controller. Refer to the NX-series Safety Control Unit User's Manual (Cat. No. Z930) for
details.
Type | Model and corresponding PL and safety category |
OMRON Single-beam Safety Sensors | E3ZS |
OMRON Non-contact Door Switches *2 | D40Z D40A |
OMRON Safety Mats | UM *3, UMA |
OMRON Safety Edges | SGE (4-wire connection) |
*2 The D41D High-Coded Non-Contact Safety Door Switch, which requires no dedicated controller, can be connected directly to both the NXSIH400 and NX-SID800.
*3 UM series is no longer available for order after June 2019.
*3 UM series is no longer available for order after June 2019.
Safety Output Units
Unit type | Ap- pear- ance | Specification | Unit version | Model | |||||
Number of safety output points | Internal I/O common | Maximum load current | Rated voltage | Number of safety slave con- nections | I/O re- freshing method | ||||
Safety Output Units |  | 2 points | Sourcing outputs (PNP) | 2.0 A/point, 4.0 A/Unit at 40°C, and 2.5 A/ Unit at 55°C The maximum load current depends on the installation orientation and ambient temperature. | 24 VDC | 1 | Free-Run refreshing | Ver. 1.0 | NX-SOH200 |
 | 4 points | Sourcing outputs (PNP) | 0.5 A/point and 2.0 A/Unit | 24 VDC | 1 | Free-Run refreshing | Ver. 1.0 | NX-SOD400 | |
Accessories
Not included.
Option
Unit/Terminal Block Coding Pins
Product Name | Specification | Model |
Unit/Terminal Block Coding Pins | For 10 Units (Terminal Block: 30 pins, Unit: 30 pins) | NX-AUX02 |
Terminal Block
Product name | Specification | Model | |||
No. of terminals | Terminal number indications | Ground terminal mark | Terminal current capacity | ||
Terminal Block | 8 | A/B | None | 10A | NX-TBA082 |
16 | A/B | None | 10A | NX-TBA162 | |