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4.9.2
Wire the Discrete Input (externally powered)
Procedure
Wire to the appropriate input terminal and pins.
Figure 4-26: Discrete Input wiring (externally powered)
A
C
B
A. Discrete Input
B. Channel C or D
C. 30 VDC (maximum)
Note
•
Maximum positive threshold is 3 VDC.
•
Minimum negative threshold is 0.6 VDC.
4.10
Wire the Frequency Input
Use this section to wire the Frequency Input in explosion-proof, nonincendive, or
nonhazardous installations.
Important
Meter installation and wiring should be performed only by suitably-trained personnel.
4.10.1
Wire the Frequency Input (internally powered)
Procedure
Wire to the appropriate input terminal and pins.
Figure 4-27: Frequency Input wiring (internally powered)
A
D
B
C
7
8
A. Frequency Input
B. Frequency Input device
C. (Optional) 1–10 KΩ resistor/open collector
D. (Optional) 3–30 VDC
Installation Manual
Wiring the channels
MMI-20027478
February 2020
Installation Manual
37