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Electronic Theatre Controls Inc

How to Connect C18 Series Partition Sensors to a UHCI

Question

How do I wire C18 series partition sensors to my UHCI?

  • SGM1639 (receiver)
  • SGM1640 (emitter)

 

Please note that the labels of the UHCI may vary. Please refer to this article for more information: Unison Heritage Contact Interface (UHCI) Wall Mount Label Changes

Steps

  1. Locate the Common terminal (#2) on the Switch In phoenix connector and land a spare piece of 20AWG wire     

Terminal 2 Common.png

  1. Connect the wire in terminal #2 on the phoenix connector to a spare terminal on the terminal block.
  2. Connect the brown wire from both the receiver and the emitter to +24V on the terminal block.
  3. Connect the blue from both the receiver and the emitter to our newly created common (from #2 on the phoenix connector)
  4. Connect black wire (N.O.) or white wire (N.C.) from the receiver to a UHCI contact input on the terminal block.

clipboard_ebaa936fc689092b77cc32161d3076b69.png

Note

  • The yellow LED on the receiver will illuminate when it is in line of sight of the emitter and will turn off when the beam is broken.
    C18 LED.PNG
  • When the receiver detects the emitter, the relay output will be in the "normal" state. So:
Wall State N.O. (Black Wire) State N.C. (White Wire) State
Open 0VDC +24VDC
Closed +24VDC 0VDC