ONICON System-10 BACnet - Manual (Page 10)

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System-10-BAC Network Interface Installation Guide 04/14 - 0652-8 / 16957
Page 10
Open Collector Sinking or Dry Contact:
This type of output refers to an open collector switch configured in a current sinking
arrangement or a dry contact switch (see Fig. 4 and 5). Set the selector switch, S1 to Sink.
In either case, the switch must be rated for at least 20mA at 20 VDC.
Fig. 4
Fig. 5
Di3 In (+)
Di3 In (-)
Di3 In (+)
Di3 In (-)
ONICON
BTU Meter
ONICON
BTU Meter