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12-6.MOTOR TACHO INPUT SYSTEM
Function
Detects the current RPM of the motor and
controls the output.
Description
- The motor TACHO sensor is connected to
pin 1 of the CN5.
- According to the current RPM of the motor,
asquarewaveisappliedtopin1.
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- The square wave that is input to TR5
BASE turns the motor on if high (5V), and
turns it off if low (0V). And this operation
will be inverted to TACHO NET for a clear
wave with no noise.
- The signal is applied to MICOM pin 13.
Then MICOM counts the frequency of the
input signal and detects the current RPM of
the motor.
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