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NX-SI / SO

Safety I/O Unit

NX-SI / SO

4 or 8 points per Safety Input Unit,2 or 4 points per Safety Output 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
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

* The following OMRON special safety input devices can be connected directly without a special controller.
    For detail of connectable OMRON special safety input devices, refer to NX-series Safety Control Units User's Manual
    (No.Z930-E1).

Type Model and corresponding PL and safety category
OMRON Single-beam Safety Sensors E3ZS and E3FS
OMRON Non-contact Door Switches D40Z
D40A
OMRON Safety Mats UM
OMRON Safety Edges SGE (4-wire connection)

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

Option

Product Name Specification Model
Unit/Terminal Block Coding Pins For 10 Units (Terminal Block: 30 pins, Unit: 30 pins) NX-AUX02

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