Onicon F-3500 - Page 22

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • sales@onicon.com
F-3500 Insertion Electromagnetic Flow Meter Manual 02/18 - 0665-11 Page 22
Wire
Color
Description Note
Red
24±4 VAC 50-60 Hz @ 250 mA or
+24±4 VDC @ 250 mA
Connect to 24 VAC transformer or
DC power supply positive
Black (-) Isolated supply common
Connect to 24 VAC transformer common
or DC power supply common
Green /
Yellow
Earth connection (required to operate)
See Section 3.5.2 for assistance in
locating a suitable building earth connection
Analog Output
Blue (+) Isolated analog output
May congured as:
4-20 mA, 0-10 V or 0-5 V output
Brown (-) Analog output common Use for analog signal only
Scaled Pulse Output
Gray
Scaled output, isolated dry contact,
50 VDC @100 mA maximum
Dry contact scaled to provide one pulse
per volumetric unit. Examples:
1 pulse per 10 gal.
1 pulse per 100 gal.
Violet
Scaled output, isolated dry contact,
50 VDC @100 mA maximum
Frequency Output
Green
(+) Isolated frequency output,
0-500 Hz maximum
Required when meter is connected to local
display or Btu meter
Yellow (-) Frequency output common
Alarm Output
Orange
Alarm output, Isolated dry contact,
50 VDC @100 mA maximum
Dry contact alarm output. Closed contact
indicates, empty pipe or excessive electrical
noise.
White
Alarm output, Isolated dry contact,
50 VDC @ 100 mA maximum
Earth wiring connections for use with grounding rings
Grounding Rings