Easy Positioning Pid Control - Toshiba TOSVERT VF-AS3 Instruction Manual

b) Adjust for stability, and quick response.
Steady the PID control (Feedback
filter)
Steady the PID control. (Limit the PID
deviation*1)
Adjust for quick response
Start the PID control after the system
becomes stable.
*1 Deviation means difference between the set value and the feedback value.
2. 3

Easy positioning PID control

Easy positioning PID control is selected to retain the stop position in the vector control with speed sensor.
When [Pt: V/f Pattern] = "10" or "11", the easy positioning control is entered with the input terminal assigned [72:
Simple positioning] turned on, considering the point as zero positional deviation.
When the PG input pulse number is within the setting value of [F381: Simple positioning completion range] during the
easy positioning control, a signal can be output from the output terminal to which [118: Stop positioning completion] is
assigned.
[F359: PID control1]
■ Diagram
Set value
0
PID control starts after
"72: Simple positioning"
ON
Feedback
frequency
∫
* While the [72: Simple positioning] signal is not input, the PID control is not executed.
When the simple positioning signal is input, the PID control is executed so that a stop occurs at the position at
which the signal is input.
VF-AS3
Item
= "3: Easy positioning PID control" (Plus characteristic)
PID deviation
upper-limit
Position/
frequency
conversion
- PID deviation
lower-limit
PID plus/minus
"72: Simple positioning" signal
0: Integral clear
1: Integral start
Title Parameter name
F361 PID1 filter
F364 PID1 deviation upper-limit
F365 PID1 deviation lower-limit
F372 PID1 set value increase time
F373 PID1 set value decrease time
F369 PID control start wait time
PID output
upper-limit
[F364] [F370]
PID
control
PID output
lower-limit
[F365] [F371]
2-5
E6582112
Output frequency
upper-limit
[ UL ]
Jump
frequency
Output frequency
lower-limit
[ LL ]
Output
frequency
2. PID control selection
2
3
9
10