Onicon FB-3500 Series Manuel d'utilisateur télécharger pdf (Page 21)

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FB-3500 Bi-Directional Insertion Electromagnetic Flow Meter Manual 05/14 - 0718-3 Page 21

CAUTION

Failure to provide a proper earth connection to the meter may result in excessive electrical

noise that will interfere with the operation of the meter.

Wire Color Description Notes

Red (+) Supply voltage: 24±4 VDC @ 250 mA or 24±4 VAC,

60 Hz, 6 VAC

Connect to power supply (+): DC (+) or

AC (line)

Black (-) Isolated supply voltage common Connect to power supply (-): DC (-) or

AC (neutral)

Green / Yellow Earth ground connection Required to operate the meter

Green (+) Isolated frequency output Required when connecting to ONICON

display or BTU meter

Yellow (-) Frequency output common

Blue (+) Isolated analog output Congurable as a 4-20 mA, 0-10 V or

0-5 V output

Brown (-) Isolated analog output common

Gray Forward ow, scaled output, isolated dry contact Scalable dry contact pulse output for

forward ow totalization

Violet

Gray / Black Reverse ow, scaled output, isolated dry contact Scalable dry contact pulse output for

reverse ow totalization

Violet / Black

Orange / Black Flow direction indicator, isolated dry contact Contact closed when ow is in direction

of arrow on meter

White / Black

Diagnostic Signals

Orange Master alarm, isolated dry contact Dry contact closure signal indicating

fault condition

White

3.5.1 Signal and Power Wiring Connections

½" FNPT

conduit connection

Insertion depth

gage provided

with each meter

FLOW

Customer provided

conduit and adapters

Output signal(s)

to control

system

ONICON

Display or

BTU Meter

(Optional)

Allow enough slack

in the flexible conduit

to permit the meter

to be removed

from the valve.

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Onicon FB-3500 Series Manuel d'utilisateur Page 21

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