Emerson MMI-20016185 Satellite Radio User Manual


 
Wiringtheoutputs
If the pressure transmitter requires a power supply greater than 13.6 V, or if other loop devices are required, you
can use an external source to power the pressure transmitter. Use terminals S and 23 (see Figure 5-14).
Figure 5-14 Wiring to a pressure transmitter — external power, analog input
A
B
D
4-20 mA
24 VDC
C
A Pressure transmitter
B DC power supply
C Current limiting resistor
D Optional loop device(s)
Notes
Terminal S (MA SIG IN) is the signal input to the 9739 MVD transmitter.
Terminal 23 (SIGNALGND) is the return. You must connect terminal 23 directly to the negative (-) terminal of the external
power supply.
If digital communications between the pressure transmitter and the 9739 MVD transmitter is required, use terminals
17 (PV+) and 18 (PV−) (see Figure 5-15).
34MicroMotion9739MVDTransmitters