Alcorn Mcbride V+ series, User Manual

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12-6 IO64 Hardware Reference
Digital Inputs
The IO64 includes 32 Opto-isolated inputs that can help control the flow of a
show system. These inputs can be activated through the Phoenix Type Input
Connectors located on the rear panel.
Note
The Opto-Inputs on the IO64 are polarity-sensitive. For a specific input
to be correctly connected, positive voltage must be connected to the top socket
of the Phoenix connector, and negative voltage must be connected to the bottom
socket.

Connecting an Input
1. Verify that the appropriate Resistor Pack is installed in each of the sockets
(see Tables 4 and 5 below)
2. Using a Male Phoenix connector, connect the appropriate wire from the
Input signal pin (top pin 1 for Input1, top pin 2 for Input2, etc.) to the
positive terminal of the external power supply.
3. Connect the negative terminal of the external power supply to one of the
terminals of the contact closure
4. Connect the appropriate Input Return pin to the other terminal of the contact
closure (bottom pin 1 for Input1, bottom pin 2 for Input2, etc.)
Example: External Switch
Figure 2 – An external switch or button is used to activate Input1.