Channel B mA terminal requirements
Use the following chart to determine the required supply voltage for Channel B mA based
on loop resistance.
Figure 3-2: Channel B output supply voltage and loop resistance
A. Loop resistance (Ohms)
B. Supply voltage (Vs)
C. Maximum Loop Resistance (Ohms)
Table 3-3: For maximum loop resistance for Channel B
Condition Equation
7.0V < Vs <20.2V (Vs-7.0V)/22mA
20.2V < Vs < 30V 600 ohms
Installation Manual Wiring the channels
MMI-20058013 April 2019
Installation Manual 25
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