Sanken SVCO6, Instruction Manual, Page: 210 / 326

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7-3 Description of Functions
Note 3: The judgment of inverter startup condition is not the command values of PID, like the normal operation, it is
determined by the status of target frequency, starting frequency and operation start frequency.
Therefore, when the setting is beyond the frequency of F3001/F3101≠1, the input switching of PID command
value during operation startup is required to set the multi-speed target frequency larger than starting
frequency and operation start frequency.
Note 4: PID command value input switching: when the setting is beyond the frequency of F3001/F3101≠1, since the
control value is different from normal frequency command, the functions based on normal frequency will not
work, such as acceleration/deceleration characteristics, constant-speed protection, flying start and so on.
Please pay attention to this.
【
Feedback Value of PID Control
】
F3002 PID1 feedback input switching
F3102 PID2 feedback input switching
F3014 PID1 feedback value gain
F3114 PID2 feedback value gain
F3007 PID1 feedback signal input filter time constant
F3107 PID2 feedback signal input filter time constant
The function to select the feedback value of PID control.
The function to select feedback input, F3002 for PID1 and F3102 for PID2.
● Select the following PID feedback value in the settings of F3002/F3012.
· F3002/F3012=0: no input
When the feedback input is not selected, the PID control selected by PID1 and PID2 will be noneffective. The
normal open loop operation will be carried out.
· F3002/F3012=1 - 9: various analog feedback input values (VIF1 - VIF3)
Input feedback value through various analog inputs (VIF1
-
VIF3).
Analog input is the same as normal frequency command, the input value will be switched into frequency by
gain frequency and bias frequency of F1401
-
F1406, this frequency will be used as feedback value for PID
control.
· F3002/F3012=10: the values set by F3018 (PID1)/F3118 (PID2) are the feedback values.
When feedback value is input by communication function, please enter the data in F3018 (PID1)/F3118
(PID2).
The values set by F3018 (PID1)/F3118 (PID2) are switched into frequency by the frequency set by F3019
(PID1)/F3119 (PID2).
The maximum value (6000) of F3018 (PID1)/F3118 (PID2) will be switched into the frequency set by F3019
(PID1)/F3119 (PID2).
Example) When F3118=1200 and F3119=100Hz, the feedback value of PID2 is 20Hz.
· F3002/F3012=99: The speed is switched into frequency by PG feedback pulse input (A+, A-/B+, B- terminals),
the frequency will be used as feedback value input.
For PG feedback pulse input and setting method, please refer to Chapter 4 ―Connection of PG Sensor‖ and
―Function description of PG sensor (F8110/F8122/F8125)‖.
● Each PID feedback value can be gained by F3014 (PID1)/F3114 (PID2).
● After each PID feedback value is gained, F3007 (PID1)/F3107 (PID2) can be used for filter. The setting value=1 of
F3007 (PID1)/F3107 (PID2) is the time constant for 10ms filter.
Example) When F3007=10, the filter time constant =100ms.
Note: When there is a speed control by PG sensor, the PG feedback will be processed internally. Therefore, never use PG
feedback PID function (F3002=99 or F3102=99). If the functions of PG sensor speed control and PG feedback PID
are used together, a correct control cannot be realized.