Andover Controls UI-8-10 - Page 44

38 Andover Controls
Input Circuitry
The following is a simplified schematic of both the DI-6-AC and the DI-6-AC-HV Digital
Input module:
The main difference between the two is the DI-6-AC-HV circuit includes a front end that
supports the higher voltages.
DI-6-AC
IN x
275V
MOV
15K
10V
RET
II
AC to DC
Converter
AC
OptoCoupler
15K
IN x
275V
MOV
100K
40V
RET
II
AC to DC
Converter
AC
OptoCoupler
100K
DI-6-AC
DI-6-AC-HV
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