YASKAWA VS-616PS5 Series Programming Manual page 19

Control circuit terminal 14 accepts voltage signal:
Set terminal 14 signal selection (H3-08) to "0" for 0-10 VDC input signal or "1" for -
10 to 10 VDC input signal. The J1 jumper must also be cut to set-up terminal 14
to accept a voltage signal.
Intended
Value
H3-06
Feedback
Calibration
Gain
Detected
Value
D
B5-05
Notes:
1. I value is reset to "0" when operation stops.
2. The upper limit of the I value can be set by parameter B5-04.
Increase the value of parameter B5-04 to upgrade control capability by
integration. If the control system is unstable and it cannot be stopped by
adjusting the integral time, output delay time, etc., decrease the set value
of parameter B5-04.
3. PID control can be canceled by a multi-function contact input signal.
By setting any of parameters H1-01 to H1-06 to "19" and by closing the
contact during running PID control is disabled and the intended value sig-
nal itself is used as a frequency reference signal.
B5-02 PID Control Proportional Gain
Setting Range:
Factory Default:
The proportional gain is the value by which the deviation signal is multiplied to gener-
ate a new frequency reference. Too high a setting will result in oscillations (instabil-
ity).
Too low a setting will result in a sluggish response.
VS-616PS5 Programming Manual
B5-02
+
P
(Deviation) -
I
B5-01
B5-03
1
1
D
+
B5-05
+ 2
2
B5-01
Figure 9 PID Control Block Diagram
0.00 to 25.00
1.00
B5-06
+ +
Output
Limit
Limit
+
Delay Time
B5-04
Offset
B5-07
Section B: Application Parameters
B5 PID Control
0
Frequency
B5-08
Reference
1 or 2
B5-01
A
19