User's Guide

User Guide
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13.2.2 Input Signals
The "digital" inputs have the following characteristics:
>polarized type, input device optocoupler, photo-diode, cathode
side
>logic Level active low, zero voltage input
>max open circuit output voltage: 6 VDC
>max current sinking requirement: 5mA
>logic low time for momentary 150mS, minimum
The diagram below is a sample connection method which may be utilized for
the S2000 PRO/ELITE rear panel I/O connections:
Figure 8 Rear Panel Sample Connection