Toshiba TOSVERT VF-AS1 Instruction Manual page 142

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

Gradient /

F-21
E6581528

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