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Pulse output wiring – Fluid Components International ST50 User Manual

Page 7

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ST50 MASS FLOW

FLUID COMPONENTS INTERNATIONAL LLC

This page is subject to proprietary rights statement on last page

7

Doc. No. 06EN003367 Rev. D

Output and Pulse configuration setup command “V”

*Each sample period the number of pulses are calculated and output by the open collector. Any remaining fractional pulse in the calculation will be added
to the next sample. Example:
flow = 90 NCMM (= 1.5 NCMS), Pulse factor =1, sample time is 1.
after 1 second the number of calculated pulses is 1.5, pulse out is 1. Remainder = 0.5
after the next second the number of pulses is 2 (1.5+0.5), pulses out is 2. Remainder = 0

Analog out

Select 1

Select 2

Select 3

Select 4

4-20mA out1

Flow

Flow

Temp

Temp

4-20mA out 2

Temp

Flow

Flow

Temp

Pulse out

Select 1

Select 2

Select 3

Select 4

Source

pulse

pulse

Alarm0

Alarm0

set

Factor

Factor

Setpoint

Setpoint

Time

Time

sate

state

state

state

Sink

Pulse

Alarm1

Pulse

Alarm1

Factor

Setpoint

Factor

Setpoint

Time

sate

Time

sate

state

state

ST50 Pulse Output (Source)

ST50 Pulse Output (Sink)

FCI

customer wiring

egnd
Neut
Line

source

-

+

com

sink

10KΩ

4-20
RTN
4-20

Counter input

NPN

Com

150mA maximum

jumper

External 24-40 vdc

power Supply

15 vdc
50mA max.

FCI

customer

wiring

egnd
Neut

Counter

input

Line

NPN

source
com

10

sink

K

4-20

RTN

Com

4-20

jumper

Pulse Output Wiring