Rockwell-automation 1771-CFM Config. Flowmeter Installation Instructio Manual de usuario descargar pdf (Pagina 13)

Configurable Flowmeter Module 13

Publication 1771ĆIN043B-EN-P - July 2002

Modes of Operation

You configure the CFM module for these modes of operation:

Use this mode To

Indicators/

Alarms

Prover

Total

reset

Scaler

values

Rollover

value

Totalizer

• accurately measure counts using a flowmeter

or positive displacement meter

• trigger outputs directly from the CFM module

Ċ trigger on total, frequency, acceleration

• monitor flow total, rate, and rate of change

independent of your PLC processor scan times

• store counts based on external input

• scale the frequency and count to

engineering units

• interface to a prover

overrange

overflow

overspeed

acceleration

√ √ √ √

Nonresettable Totalizer

operate in the Totalizer mode with the count

reset function disabled to prevent loss of

accumulated value

overrange

overflow

overspeed

acceleration

√ √ √

HighĆresolution Frequency

(channels 0&1 or channels 2&3)

• monitor the frequency of an input with high

accuracy (e.g. shaft)

• monitor the rate of speed change

• operate outputs based on speed or

rate of change

• scale the frequency to engineering units

overspeed

overrange

acceleration

√

Direction Sensor

(channels 0&1 or channels 2&3)

• monitor the direction of shaft rotation

• monitor rate of change and frequency

• trigger outputs based on direction, frequency,

rate of change

• scale the frequency and count to

engineering units

overspeed

acceleration

overrange

√

This mode uses two channels for one input (your input device is connected to F0 or F2, while F1 or F3 is unused).

In this mode

of operation

You can assign outputs that are programmable to trigger

Totalizer

on total, rate, rate change (acceleration), total overflow or

prover status

Nonresettable Totalizer

on total, rate, rate change (acceleration), total overflow or

prover status

HighĆresolution

Frequency

on frequency or frequency rate of change (acceleration)

Direction Sensor

on either CLOCKWISE or COUNTERĆCLOCKWISE direction,

acceleration or frequency (outputs are triggered ON only)

If you want to configure the module You

through I/O Configuration software (if you

are using a PLCĆ5 family processor

)

enter the appropriate information on the

CFM module edit screens.

by editing bits at the address of the

BTW instruction

edit the data file addresses in the BTW

instruction to match your particular

application. Use the word assignments

on page 14 to edit the bits that apply to

your application(s).

See PLCĆ5 Programming Software I/O Configuration Manual, publication 6200Ć6.4.12, for

supported processors.

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Rockwell-automation 1771-CFM Config. Flowmeter Installation Instructio Manual de usuario Pagina 13

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