LiteOn EVO 6800 Series - Page 94

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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