WR-90 Point to Multi-Point Wireless Instruction Manual
15
Power Connector
Power connections are made to a two-terminal connector
labeled POWER in Figure 11. The WR-90 is reverse
polarity protected; it will not be damaged if wired backward.
Make sure that the power supply can provide between 12
and 24 VDC to the wireless device.
Power WR-90 Field Unit and 2-Wire Transmitter from Same Power Supply
The WR-90 wireless units may be powered from the same power supply that powers the 2-wire (loop-
powered) transmitter, assuming that the supply provides enough voltage for both units. To power both
devices from the same supply, wire the devices to the supply as shown below.
Figure 13. WR-90 Field Unit and 2-Wire Transmitter Powered from Same Supply
Wireless
Module
24 VDC
Power Supply
4-20 mA
2-wire
Transmitter
Wireless
Module
Figure 12. Field Unit Power
Connection
