Sanken SVCO6, Инструкция по эксплуатации, Страница: 213 / 326

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7-3 Description of Functions
F3010 PID1 output limit value
F3110 PID2 output limit value
The function to make output limit for output of integral operation output and PID operation output.
● For integral and PID operation output, F1007: a positive/negative limit will be made by the rate to upper frequency
limit.
· F3010/F3110=0: no limit
· F3010/F3110=1
-
100%: make a limit by the rate to upper frequency limit.
Example) When F1007=60Hz and F3010=90%, ±54Hz will be used to limit the deviation of PID control.
Note: Even though output Fo is controlled for positive/negative limit of F3010/F3110, the actual output frequency of
the inverter is controlled by the upper frequency limit F1007 and lower frequency limit F1008.
F3012 PID1 gain polarity switching
F3112 PID2 gain polarity switching
F3015 PID1 control proportional gain (negative)
F3115 PID2 control proportional gain (negative)
F3016 PID1 control integral time (negative)
F3116 PID2 control integral time (negative)
The function to switch positive/negative proportional gain and integral time through the polarity of deviation.
● With the polarity of deviation, the switching of positive/negative proportional gain and integral time can be selected.
· F3012/F3112=1
：
The positive or negative deviation indicates the same gain
When deviation has no relationship with polarity, use F3003/F3103: proportional gain and F3004/F3104:
integral time for PID operation.
· F3012/F3112=2
：
The positive or negative deviation indicates different gains
The proportional gain and integral time used for operation are different according to the polarity of deviation.
When deviation
≧
0 (positive)
Use F3003/F3103: proportional gain and F3004/F3104: integral time for PID operation.
When deviation < 0 (negative)
Use F3015/F3115: proportional gain (negative) and F3016/F3116: integral time (negative) for PID operation.
Note: In normal control system, same proportional gain and integral time will be normally used. But for system with
an obvious result of gain by positive/negative polarity, please try this function.
F3006 PID1 control integral separation judgment value
F3106 PID2 control integral separation judgment value
The function to invalid the integral according to the deviation value.
When the status change of the control system is large and large vibration or unstable has been caused by sharp increase
of integral output, please adjust this function.
● Set the judgment value for PID control integral separation
· F3006/F3106=5
-
100%: the rate to upper frequency limit.
Deviation between PID command value and PID feedback value: when the conditions specified by Fe have
been satisfied, the integral control is noneffective (separation).
Separation conditions are F3006/F3106: integral separation judgment value and upper frequency limit and
deviation: absolute value of Fe. The judgment will be as follows.
Conditions of integral separation:
∣
Fe
∣
> upper frequency limit×F3006/F3106