KEYENCE KV-D20 - Manual (Page 57)

3. Examples of Ladder Programs
3
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Example of frequency counter
Operate the KV-D20 to use the frequency counter function of the KV basic unit. In
the numeric value change mode of the operator screen, set the number of pulses
of one encoder rotation to obtain the measurement cycle and rpm.
➮ Refer to "Changing numeric values individually" on page 49.
The customized switches are assigned to the following functions:
F1: Starts operation.
F2: Finishes operation.
F3: Frequency (Hz) measurement
F4: Rotation (rpm) measurement
The customized lamps are assigned to the following functions:
LED1: Illuminates during operation.
LED2: Illuminates during frequency (Hz) measurement.
LED3: Illuminates during rotation (rpm) measurement.
LED4: Not used
➮ Refer to the NEW KV Series User's Manual "Frequency Counter Function" on page 625 for details.
Operator screen Switch comment screen
Lamp comment screen
F1 F2 F3 F4
F3 F4
1 2 3 4
FREQUENCY COUNTER:Hz
MEASUREMENT CYCLE: 0ms
PULSE FOR 1 ROTATION:0PLS
FREQUENCY:
0Hz
FREQUENCY COUNTER:rpm
MEASUREMENT CYCLE: 0ms
PULSE FOR 1 ROTATION:0PLS
ROTATION:
0rpm
F1:START
F2:END
F3:UNIT CHANGE (Hz)
F4:UNIT CHANGE (rpm)
LED1:MEASURING
LED2:UNIT (Hz)
LED3:UNIT (rpm)
LED4:RLY 2507
kv_d20_manual.p65 08.3.10, 6:09 PM 57