Watts Aerco ProtoNode FPC-N34 - 3.2 Device Wiring and Connections

ProtoNode FPC-N34 & FPC-N35 User Manual
CHAPTER 3 – Interfacing ProtoNode to Devices
OMM-0150_B • 5/20/2021 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 19 of 140
3.2 Device Connections to ProtoNode
ProtoNode 6 Pin Phoenix connector for RS-485 Devices
• The 6 pin Phoenix connector is the same for ProtoNode FPC-N34 and FPC-N35.
• Pins 1 through 3 are for Modbus RS-485 devices.
o The RS-485 GND (Pin 3) is not typically connected.
• Pins 4 through 6 are for power. Do not connect power (wait until Section 3.6).
Figure 3-2: Power and RS-485 Connections
Device Pins
ProtoNode
Pin #
Pin
Assignment
Pin RS-485 +
Pin 1
RS-485 +
Pin RS-485 -
Pin 2
RS-485 -
Pin GND
Pin 3
RS-485 GND
Power In (+)
Pin 4
V +
Power In (-)
Pin 5
V -
Frame Ground
Pin 6
FRAME GND