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NX-SI / SO – NX Series Safety Input Unit – Omron Safety I/O Unit

$ 362.94$ 381.74

SKU N/A Category

Safety I/O Unit

Safety Input Units

Unit
type
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

 

 

Regulations and Standards

Safety I/O Units NX-SI/SO

Certification body Standards
TÜV Rheinland *1 • EN ISO 13849-1
• EN ISO 13849-2
• IEC 61508 parts 1-7
• IEC/EN 62061
• IEC/EN 61131-2
• IEC 61326-3-1
UL • NRAG (UL 508 and ANSI/ISA 12.12.01)
• NRAG7 (CSA C22.2 No. 142 and CSA C22.2 No. 213)
Shipbuilding Standards NK, LK

 

*1 Using the NX-series Safety I/O Units in conjunction with the NX-series Safety CPU Unit allows you to build a safety control
system that meets the following standards:
• Requirements for SIL 3 in IEC 61508 and IEC/EN 62061
• Requirements for PLe and Safety Category 4 in EN ISO 13849-1
The NX-series Safety I/O Units are also registered for RCM, EAC, and KC compliance.

 

General Specifications

Item Specification
Enclosure Mounted in a panel (open)
Grounding method Ground to 100 Ω or less.
Operating
environment
Ambient operating temperature 0 to 55°C (The upper limit of the ambient operating temperature
is restricted by the installation orientation.)
Ambient operating humidity 10% to 95% (with no condensation or icing)
Atmosphere Must be free from corrosive gases.
Ambient storage temperature -25 to 70°C (with no condensation or icing)
Altitude 2,000 m max.
Pollution degree 2 or less.
Noise immunity Conforms to IEC 61131-2.
2 kV on power supply line (Conforms to IEC 61000-4-4.)
Insulation class Class III (SELV)
Overvoltage category II
EMC immunity level Zone B
Vibration resistance Conforms to IEC 60068-2-6.
5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz, acceleration of
9.8 m/s2, 100 minutes each in X, Y, and Z directions (10 sweeps
of 10 min each = 100 min total)
Shock resistance Conforms to IEC 60068-2-27.
147 m/s2, 3 times each in X, Y, and Z directions
Insulation resistance 20 MΩ between isolated circuits (at 100 VDC)
Dielectric strength 510 VAC for 1 min between isolated circuits,
leakage current: 5 mA max.
Installation method DIN Track (IEC 60715 TH35-7.5/TH35-15)

 

Unit Specifications

Safety Input Units NX-SIH400/SID800

Unit name Safety Input Unit
Model NX-SIH400 NX-SID800
Number of safety
input points
4 points 8 points
Number of test
output points
2 points 2 points
Internal I/O common PNP (sinking inputs)
Rated input voltage 24 VDC (20.4 to 28.8 VDC)
OMRON special
safety input devices
Can be connected. Cannot be connected.
Number of safety
slave connections
1
I/O refreshing method Free-Run refreshing
External connection
terminals
Screwless clamping terminal block (8
terminals)
Screwless clamping terminal block (16
terminals)
Indicators
Safety input current 4.5 mA typical 3.0 mA typical
Safety input
ON voltage
11 VDC min. 15 VDC min.
Safety input OFF
voltage/OFF current
5 VDC max., 1 mA max.
Test output type Sourcing outputs (PNP)
Test output load
current
25 mA max. 50 mA max.
Test output
residual voltage
1.2 V max. (Between IOV and all output terminals)
Test output
leakage current
0.1 mA max.
Dimensions 12 × 100 × 71 mm (W × H × D)
Isolation method Photocoupler isolation
Insulation resistance 20 MΩ min. between isolated circuits (at 100 VDC)
Dielectric strength 510 VAC for 1 min between isolated circuits, leakage current: 5 mA max.
I/O power supply
method
Power supplied from the NX bus
Current capacity of
I/O power supply
terminals
No applicable terminals.
NX Unit
power consumption
• Connected to a CPU Unit or a
Communication Control Unit *1
1.10 W max.
• Connected to a Communications Coupler
Unit *2
0.70 W max.
• Connected to a CPU Unit or a
Communication Control Unit *1
1.10 W max.
• Connected to a Communications Coupler
Unit *2
0.75 W max.
Current consumption
from I/O power supply
20 mA max.
Weight 70 g max.
Circuit layout 3244_sp_3_3 3244_sp_3_4
Terminal connection
diagram
Si0 to Si3: Safety input terminals
T0 and T1: Test output terminals
3244_sp_3_5

Refer to User’s manual (Cat.No.Z930) for details.

Si0 to Si7: Safety input terminals
T0 and T1: Test output terminals
3244_sp_3_6

Refer to User’s manual (Cat.No.Z930) for details.

Installation orientation
and restrictions
Installation orientation:
• Connected to a CPU Unit or a Communication Control Unit *1
Possible in the upright installation orientation.
• Connected to a Communications Coupler Unit *2
6 possible orientations.
Restrictions: Maximum ambient temperature is 50ºC for any orientation other than upright
installation.
Protective functions Overvoltage protection circuit and short detection (test outputs)

 

*1 It can be connected to the NX102 CPU unit or communication control unit. It cannot be connected to the NX1P2 CPU unit.
*2 The NX-ECC20 EtherCAT Coupler Unit and NX-EIC202 EtherNet/IP Coupler Unit can be connected.

Additional information

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