Agreement Between Set Value And Feedback Value; Switch To Frequency Command Operation - Toshiba TOSVERT VF-AS3 Instruction Manual

4. 3. 3
It is possible to output agreement signal between the set value and the feedback value. Signal is output when
difference between set by [F389] and the feedback value by [F360] are within ± [F374].
Title
F374
Output terminal function
Positive
logic
144
4
4. 3. 4
You can switch from PID control to frequency command operation by input terminal signal.
Assign "36: PID control OFF" to an unused input terminal.
The inverter operates with the frequency set by [FMOd: Frequency command select 1] or
[F207: Frequency command select 2].
■ Process type
The acceleration time and the deceleration time are set short for quick response of the PID control. You can use
the second acceleration time and deceleration time if necessary.
9
Input terminal function
Positive
logic
36
In case "PID control OFF" signal is input, PID output limits can be selected by [F497] as the table below.
Parameter
F497: bit4 = 0
F497: bit4 = (+16)
4. Setting for PID control

Agreement between set value and feedback value

Parameter name
PID1 set value
agreement detection
band
Negative
Function
logic
145 PID1,2 frequency
command agreement

Switch to frequency command operation

Negative
Function
logic
37 PID control OFF
PID output limits are set by [F370], [F371].
nd
(In case 2 PID control is used, PID output limits are set by [A322], [A323])
PID output limits are set by [UL], [LL].
Description
Set the PID set value agreement detection band.
0.0 to [FH] (Hz)
Action (Positive logic)
Difference between [F389] and [F369] are within ± [F167].
Action (Positive logic)
Switch to frequency command operation after PID control is
OFF
Function
4-12
E6582112
VF-AS3