2 Specifications
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NX-series Safety Control Unit User’s Manual (Z930)
NX-SOH200
Safety Output Units
Unit name Safety Output Unit
Model NX-SOH200
Number of safety output points 2 points
Internal I/O common PNP (sourcing outputs)
Maximum load current
2.0 A/point
4.0 A/Unit at 40°C
2.5 A/Unit at 55°C
The maximum load current depends on the installation orientation and
ambient temperature.
Rated voltage 24 VDC (20.4 to 28.8 VDC)
Number of safety slave con-
nections
1
I/O refreshing method Free-Run refreshing
External connection terminals Screwless clamping terminal block (8 terminals)
Indicators
TS indicator, FS indicator, output indicators (yellow), and output
error indicators (red)
Safety output ON residual volt-
age
1.2 V max. (Between IOV and all output terminals)
Safety output OFF residual
voltage
2 V max. (between IOG and all output terminals)
Safety 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
IOG: 2 A max./terminal
NX Unit power consumption 0.70 W max.
Current consumption from I/O
power supply
40 mA max.
Weight 65 g max.
Circuit layout
Terminal block
So0 and So1
IOG
I/O power supply +
I/O power supply −
Left-side NX
bus connector
I/O power supply +
I/O power supply −
Right-side NX
bus connector
Internal circuits
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