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Toshiba Tosvert VF-AS1 Instruction Manual Page 137

The new high-performance inverter.
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 Adjustment with continuous signals (Parameter setting example 1)
Set parameters as follows to adjust the output frequency up or down in proportion to the frequency adjustment signal
input time:
Panel frequency incremental gradient =  /  setting time
Panel frequency decremental gradient =  /  setting time
Set parameters as follows to adjust the output frequency up or down almost in synchronization with the adjustment by
the panel frequency command:
 =  = 
(  (or  ) /  )
(  (or  ) /  )
«Sample sequence diagram 1: Adjustment with continuous signals"
RUN command
Incrementing (UP)
Decrementing (DOWN) signal
Set frequency clearing signal
Upper limit frequency
Command frequency [Hz]
Lower limit frequency
Frequency 0 Hz
 Adjustment with pulse signals (Parameter-setting example 2)
Set parameters as follows to adjust the frequency in steps of one pulse:
 , 
 ,  =  Frequency obtained with each pulse
* The inverter does not respond to any pulses with an ON time shorter than set with  or  . 12ms
or more of clearing signal is allowed.
«Sample sequence diagram 2: Adjustment with pulse signals"
Operation command (such as F)
Incrementing (UP) signal
Decrementing (DOWN) signal
Clear signal
Upper limit frequency
Command frequency [Hz]
(The dotted line represents
the actual output frequency.)
(  /  setting time)
(  /  setting time)
Gradient /
The dotted line represents the actual output frequency.
Pulse ON time

0Hz

F-21
Gradient /


E6581442
6

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