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Reference Manual
00809-0100-4444, Rev AC
Section 2: Installation
January 2015
Quick Installation and Startup
External power
The 4-20mA analog signal is passive and must be powered from an external power source.
Power at the transmitter terminals must be 10.8 - 30VDC.
Wire terminal 1 (-) and terminal 2 (+). See Figure 2-23.
Figure 2-23. Analog Wiring—External Power
Analog loop load limitations
Maximum loop resistance is determined by the voltage level of the external power supply, as
described in Figure 2-24.
Figure 2-24. Analog Loop Load Limitations
R
max
= 31.25 (V
ps
– 10.8)
V
ps
= Power Supply Voltage (Volts)
R
max
= Maximum Loop Resistance (Ohms)
Power Supply (Volts)
Load (Ohms)
Operating
Region
600
0
10.8 30