Spectrum Controls 1756-CTR8, User Manual

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Owner’s Guide 0300199-01 Rev. D
Appendix A
Module Specifications
This appendix lists the specifications for the 1756sc-CTR8 Counter Module.
Specification Description
Backplane Current Consumption 230 mA at 5 VDC 75 mA at 24 VDC
Backplane Power Consumption 3.00 W maximum (0.6 W at 5 VDC,
2.4 W at 24 VDC)
Maximum Power Dissipation 4.8 W (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 (12 kHz,
25 kHz, debounce)
Calibration Module does not require calibration
Input Overvoltage Protection ±50 VDC
Input Overcurrent Protection Less than 4 mA at 50 VDC
Isolation 2550 VDC continuous between inputs
and chassis ground, and between
inputs and backplane.
Specification Description
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 2.1 mm 2 (16 AWG) wire per
terminal