Emerson Smart Wireless THUM Adapter Reference Manual page 33

Reference Manual
00809-0100-4075, Rev CA
Figure 3-24. Wiring diagram for 4-wire active device with resistor
Figure 3-25. Wiring diagram for 4-wire active device with no 4-20 mA loop
Figure 3-26. Wiring diagram for THUM adapter as router, no wired device
The 1200 Ohm resistor should be adequately rated for the application (3W minimum).
Mounting
THUM Adapter
Wired Device
Green
Yellow
White
Black
Red
4-20 mA/HART +
4-20 mA/HART -
THUM Adapter
Green
Yellow
White
Black
Red
4-20 mA/HART +
4-20 mA/HART -
THUM Adapter
Green
Red
Black
White
Yellow
Junction Box
Splice Connector
4-20 mA Loop +
Ground
4-20 mA Loop -
Resistor
Power +
Power -
Wired Device
Splice Connector
Ground
Resistor
Ground
250
1200
Ohm
Ohm
Resistor
Section 3: Mounting
March 2014
Power +
Power -
24V
Power
25