Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Instrukcja Użytkownika Pobierz pdf (Strona 186)

Publication 1760-UM002B-EN-P - March 2005

4-76 Wiring with Pico GFX-70

Wiring of a Frequency Counter

You integrate a frequency counter into your circuit in the form of a contact

and coil. The counter relay has different coils and contacts.

Figure 4.31 Pico GFX-70 circuit diagram with frequency counter

Parameter display and parameter set for frequency counter:

In the parameter display of a counter relay you change set point values and/or

the preset value and the enable of the parameter display.

Value Range

The function block operates in the integer range from 0 to 5000

1 kHz 1 = 1000

Behavior when value range is exceeded

The value range cannot be exceeded as the maximum measured value is less

than the value range.

Inputs

The function block inputs >SH and >SL can have the following operands:

IMPORTANT

To prevent unpredictable switching states, use each coil of a

relay once only in the circuit diagram. Use a counter input

for the CF, CH, CI counters only once.

I 05---------------------------[ CF01EN

CF01OF-------------------------[ Q 01

CF01FB-------------------------[ Q 02

CF01ZE-------------------------[ Q 03

CF01 -

>SH

>SL

QV>

CF01 Frequency counter function block number 01

- Does not appear in the parameter display

>SH Upper set point

>SL Lower set point

QV> Actual value in RUN mode

1 2 ... 181 182 183 184 185 186 187 188 189 190 191 ... 399 400

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