94
b5-25 Sets the number of decimal places to display..
No.
Name
Setting Range
Default
b5-24
PID Target Display Value
1 to 60000
Determined by b5-19
b5-25
PID Target Display Digits
0 to 3
Determined by b5-19
0
∶
No Decimal Places
1
∶
1 Decimal Place
2
∶
2 Decimal Places
3
∶
3 Decimal Places
PID Fine-Tuning
Follow the following instructions when the PID control parameters are set.
Overshoot Suppression
When an overshoot occurs, reduce the derivative time set to b5-04 and increase the integral
time set to b5-02.
Stability after Overshoot.
To immediately achieve stability after an overshoot, increase the derivative time set to b5-04
and reduce the integral time set to b5-02.
Long Cycle Oscillation Suppression
If the oscillation cycle is longer than the integral time set to b5-02, increase the time as the
integral operation is too strong.
Short Cycle Oscillation Suppression
If the oscillation cycle is almost the same as the derivative time set to b5-04, reduce the time as
the derivative operation is too strong.
If even 0.00 derivative time (D control disabled) cannot suppress the oscillation, reduce the P
Gain set to b5-01 or increase the PID Primary Delay Time set to b5-07.
b5- 26 Frequency Reference Monitor Content During PID
Sets the content of the frequency reference monitor display (U4-08) when PID control is
active.
No.
Name
Setting Range
Default
b5-26
Frequency
Reference
Monitor
Content During PID
0 、 1
0
0: Frequency Reference after PID
Summary of Contents for EVO 6800 Series
Page 1: ...MANUAL Compact Vector Drive EVO 6800 Series...
Page 33: ...33 34 2 36 0 2 8 93 0...
Page 35: ...35 4 2 Main Circuit...
Page 41: ...41 4 3 Control Circuit...
