(-) (+)
(-) (+) (-) (+)
Power
12-28VDC
4-20mA Pulse
/Alarm
!
Pulse or Alarm
Output
+
-
F-5500
Customer PLC or DCS
+12 to 28VDC
12 to 28VDC Return
2.4K Ohm typical with 24VDC Power
1.2K Ohm typical with 12VDC Power
i
IMPORTANT NOTES:
• The F-5500 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.
• When the output is configured for Alarm and an alarm is not active, the output will be closed
(0 volts output). When an alarm is active, the output will be open (12 to 28 volts output).
• In order to use the Pulse/Alarm feature on the Model F-5500, this feature must be chosen
when the meter is ordered from the factory. Pulse output not available with meters ordered
with RS485 Modbus RTU and BACnet MS/TP.
Pulse/Alarm Output Wiring: Power Provided by F-5500
Bring pulse/alarm wiring in through either conduit hub. Connect 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
display or F-5000 View. Only one option, pulse or alarm, can be active at a time.
When the output is configured for Alarm, the open collector output will be open when
there is no alarm and closed when an alarm is present.
Fig. 3.5: Pulse/Alarm Output Power Provided by F-5500
11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • [email protected]
F-5500 Thermal Mass Flow Meter Manual 06/17 - 2030 / 107023
Page 34
Model F-5500
WIRING
Model F-5500
WIRING
Wiring: Pulse/Alarm Wiring
Pulse/Alarm
Output Wiring
