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Industrial Automation

Industrial Automation

NX-SI / SO

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
3244_lu_1_1 4 points 2 points Sinking
inputs
(PNP)
24 VDC Can be
connected.
1 Free-Run
refreshing
Ver. 1.1 NX-SIH400
3244_lu_1_2 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
    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.

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
3244_lu_3_1 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
3244_lu_3_2 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