Spectrum Controls 1756sc-CTR8 - Manual (Page 64)

Module Specifications
This appendix lists the specifications for the 1756sc-CTR8 Counter
Module.
Electrical
Specifications
Backplane Current Consumption 230 mA at 5 VDC
75 mA at 24 VDC
Backplane Power Consumption 3.00W maximum (0.6W @ 5 VDC, 2.4W @ 24 VDC)
Maximum Power Dissipation 4.8W (All inputs at maximum voltage)
Number of Channels 8 unidirectional / 4 bi-directional and quadrature
Number of Gates 8 gate inputs
I/O Chassis Location Any I/O module slot
Conversion Method FPGA
Input Filtering Three user selectable filters (12kHz, 25kHz, debounce)
Calibration Module does not require calibration
Input Overvoltage Protection +-50VDC cont. 50VACrms
Input Overcurrent Protection < 4ma @ 50VDC
Isolation 2550 VDC continuous between inputs and chassis
ground and between inputs and backplane.
Physical Specifications
LED Indicators 1 red/green status indicators, 1 red system status
Recommended Cable: Shielded twisted pair extension wire
Belden 8761 or equivalent
shielded Belden #9501
Maximum Wire Size One 16 AWG wire or two 22 AWG wires per terminal
Appendix A