Appendix C
OSA Remote Specifications
C-5
Bedrock Secure OSA Remote User Manual - BRDOC020_001
10/11/18
OSA Remote specifications related to each of the discrete input and output
types are presented in the following tables.
Table C-4 lists OSA Remote specifications that are specific to voltage monitor
inputs.
Table C-5 lists OSA Remote specifications that are specific to contact sense
inputs.
Table C-6 lists OSA Remote specifications that are specific to externally
sourced discrete outputs.
Table C-4 Specifications for Voltage Monitor Inputs
Specification
Value
Input Impedance (discrete input voltage)
20 k
Ω
Input Frequency Range
10 Hz to 100 kHz
Filter/Debounce Time
Programmable 0-255 ms
Frequency Accuracy
±0.035% of full-scale
Table C-5 Specifications for Contact Sense Inputs
Specification
Value
Maximum Voltage on Excitation
25 V
Filter/Debounce Time
Programmable 0-255 ms
Frequency Accuracy
±0.035% of full-scale
Table C-6 Specifications for Externally Sourced Discrete Outputs
Specification
Value
Maximum On Current
1 amp
Maximum Switching Voltage
30 V
Programmable Overcurrent Shutoff
Latch-off or back-off retry
Overcurrent Delay (Retry Period)
3-255 ms
•Back-off versus latch-off
•Back-off and retry count setting
After an overcurrent condition occurs, each
channel can either stay latched off or back-
off and retry. If back-off and retry is chosen,
the number of retries can be selected. The
total number of turn-on attempts is one plus
the number of configured retries.
Inductive Loads
Outputs require protective diodes or metal-
oxide varistors when connected to an
inductive load
Blanking Time
3 ms