Spectrum Controls 1746sc-OAP8I - Manual (Page 19)

Installation Instructions
Isolated-Circuit
Discrete Input and Output Modules
17
For IEC Type 1+ devices
that can't support 0.7 A
of inrush current, use an
external 500
Ω
1W
resistor on one input line
to reduce the inrush to
250 mA.
1746sc-IA8I
Isolated-Circuit 100/120 V ac/dc Inputs (8)
VAC/VDC
0+
VAC/VDC
1+
VAC/VDC
2+
VAC/VDC
3+
E-GND
VAC/VDC
4+
VAC/VDC
5+
VAC/VDC
6+
VAC/VDC
7+
IN 0–
IN 1–
IN 2–
IN 3–
E-GND
IN 4–
IN 5–
IN 6–
IN 7–
VS0 L2 or DC COM 0
VS0 L1 or +VDC
Alternative
input device
location
100/120 V ac/dc
VS1 L2 or DC COM 1
VS2 L2 or DC COM 2
VS3 L2 or DC COM 3
VS4 L2 or DC COM 4
VS5 L2 or DC COM 5
VS6 L2 or DC COM 6
VS7 L2 or DC COM 7
Rack mounting bolt
VS1 L1 or +VDC
VS2 L1 or +VDC
VS3 L1 or +VDC
VS4 L1 or +VDC
VS5 L1 or +VDC
VS6 L1 or +VDC
VS7 L1 or +VDC
Note -- The input circuits are electrically isolated from each other (the commons are NOT connected
internally). Therefore, up to eight different voltage sources (VS0-VS7) may be used.
Module ID Code = 303