194 Rockwell Automation Publication 1734-UM013N-EN-P - September 2017
Appendix C Specifications
Safety Digital Output Module
Specifications 1734-OBV2S
These are the technical specifications for the 1734-OBV2S safety digital output
module.
Table 20 - Safety Digital Output Module Specifications 1734-OBV2S
Attribute Value
Safety Output
Outputs per module 4 (2 bipolar pairs)
Output type Current sourcing/Current sinking Bipolar pairs
Output current (each bipolar pair), max 1.25 A @ 40 °C (104 °F)
0.5 A @ 55 °C (131 °F)
1734-OBV2S Series B temperature vs. current per bipolar
pair derating for both horizontal and vertical installations
Aggregate current of bipolar pairs per module
(1)
2 A @ 40 °C (104 °F)
0.8 A @ 55 °C (131 °F)
1734-OBV2S Series B temperature vs. aggregate current
of bipolar pairs per module derating for both horizontal
and vertical installations
(1)
Sensor power supply current rating (V and C terminals) 0.7 A max per point at 40 °C (104 °F)
0.3 A max per point at 55 °C (131 °F)
Product temperature versus sensor power current
derating (per terminal)
Pulse width 475 μs
Pulse period 575 ms
Maximum field capacitance limit permitted per output 950 nF
On-state voltage drop per bipolar pair 0.33 V
Leakage current, max 1.0 mA
Short-circuit detection Yes (short high and low and cross-circuit detect)
Short-circuit protection Electronic
Reaction time <6.2 ms
POINTBus
POINTBus current, max 125 mA
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