Output Wiring
continued
RFT9739 Rack-Mount Transmitter Instruction Manual
39
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Optocoupler output
The transmitter has an externally powered passive optocoupler output in
addition to the frequency/pulse and dual-channel frequency outputs.
The optocoupler output is derived from the primary frequency output,
and represents the same flow rate variable as the frequency/pulse
output.
Use RFT9739 terminals CN2-D10, CN2-D12, and CN2-D4 for the
optocoupler output.
• Figure 5-15 illustrates the wiring connection from the optocoupler
output to an auxiliary device.
• Signal voltage is 0-2 VDC low, 16-30 VDC high, with a 0.01 ampere
maximum sinking capability.
Figure 5-15. Optocoupler output wiring
Clip shield at
host receiver end
OPTOCOUPLER– (emitter)
GND (ground)
RFT9739
output terminals
OPTO (collector)
Host receiver
Example: PLC
Summary of Contents for Fisher Rosemount RFT9739
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