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Figure 17: Power connections
Power to ProtoNode
ProtoNode pin #
Pin assignment
Power In (+)
Pin 4
V +
Power In (-)
Pin 5
V -
Frame Ground
Pin 6
FRAME GND
Note: These values are "nominal" and a safety
margin should be added to the power supply
of the host system. A safety margin of 25% is
recommended.
Figure 16: Required current draw for the ProtoNode
Current draw type
ProtoNode family
12VDC/VAC 24VDC/VAC 30VDC
FPC – N34 (Typical)
170mA
100mA
80mA
FPC – N34 (Maximum)
240mA
140mA
100mA
3.4 - Wiring power to the ProtoNode
The following describes how to wire power to ProtoNode RER (FPC-N34 BACnet).
Ensure the power supply used complies with the specifications provided in Appendix D.1. Ensure the cable is grounded using the
“Frame-GND” terminal. ProtoNode accepts either 9–30VDC or 12–24VAC.
Make sure the S3 DIP switch is in the On position to enable the ProtoNode “Auto Discovery” mode for RS-485 devices
connected to the ProtoNode. See Section 4 before powering up.
Power requirements for ProtoNode at 9V through 30VDC or 12–24VAC
3 - Interfacing ProtoNode to Devices (cont.)
