+12 to 28VDC
Pulse or Alarm
Output
12 to 28VDC Return
+
-
Customer PLC or DCS
2.4K Ohm typical with 24VDC Power
1.2K Ohm typical with 12VDC Power
F-5400 Factory Installed Cable
White
Orange
i
Pulse/Alarm Output Wiring: Customer Supplied Power Source (Recommended)
Connect pulse/alarm wiring as shown in the diagram below. The pulse/alarm output
is an open collector circuit capable of sinking a maximum of 10mA of current. Pulse
or alarm selection is programmed using the F-5000 View software. Only one option,
pulse or alarm, can be active at a time. The pulse output is normally low (open
collector output closed) and pulses high +12 to 24VDC (open collector output open)
for 500 milliseconds when the total flow is measured. The maximum frequency setting
of the pulse output is 1 Hz.
When the output is configured for Alarm, the output will be low (open collector closed)
when there is no alarm and high +12 to 24VDC (open collector output open) when an
alarm is present.
Fig. 3.4: Pulse/Alarm Output Isolated (Recommended)
Important Notes:
• The F-5400 Pulse/Alarm output is typically used to drive digital circuitry or
solid-state relays. The output of a solid state relay may, in turn, operate loads
such as electromechanical relays or alarm indicators.
• The maximum load current of the Pulse/Alarm output is 10mA. Choose a load
resistance that provides approximately 10mA with the power supply operating
voltage.
11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • [email protected]
F-5400 Thermal Mass Flow Meter Manual 12/16 - 2031 / 107032
Page 24
Model F-5400
WIRING
Model F-5400
WIRING
Wiring: Pulse/Alarm Wiring
Pulse/Alarm
Output Wiring:
