Table 3-3: For maximum loop resistance for Channel B
Condition Equation
7.0 V < Vs <20.2 V (Vs-7.0 V)/22mA
20.2 V < Vs < 30 V 600 Ohms
Channel B Discrete Output/Frequency Output terminal requirements
Use the chart below to determine the required supply voltage for Channel B for DO/FO.
Figure 3-3: Channel B FO/DO output supply voltage and loop resistance
A. Loop resistance (Ohms)
B. Supply voltage (Vs)
C. Maximum loop resistance (Ohms)
Note
For Maximum Loop Resistance:
• (Vs – 6.0 V)/4.0mA.
Installation Manual Wiring the channels
MMI-20058013 March2024
Installation Manual 27
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