Instruction manual

34 RFT9739 Field-Mount Transmitter Instruction Manual
Output Wiring
continued
Figure 5-8. Frequency/pulse output wiring for open collector mode
Figure 5-9. Location of resistor R14 (R1) on output board
RFT9739
output terminals
PLC
or
pulse counter
RETURN (ground)
FREQ+ (signal line)
Resistor must be of sufficient value to limit loop current to
less than 0.1 ampere, depending on total loop resistance.
Resistor
(See note)
DC
power
supply
Connectors behind
output terminal blocks
CAUTION: After clipping resistor R14 or R1, an external power supply is
required to use the transmitter’s frequency pulse output. See page 33.
Resistor R14 or R1