SSINVERTER SSI700, User Manual, Page: 118 / 148

SSI700 User Manual Description of Function Codes
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Property
Default Setting Range Parameter Name
Function
Code
Group 10: Process Control PID Function
☆ 0
0: AI1
1: AI2
2: Reserved
3: AI1 – AI2
4: Pulse setting (DI5)
5: Communication setting
6: AI1 + AI2
7: MAX (|AI1|, |AI2|)
8: MIN (|AI1|, |AI2|)
PID feedback source 10-02
This parameter is used to select the feedback signal channel of process PID.
The PID feedback is a relative value and ranges from 0.0% to 100.0%.
Property
Default Setting Range Parameter Name
Function
Code
Group 10: Process Control PID Function
☆ 0
0: Forward action
1: Reverse action
PID action direction 10-03
• 0: Forward action
When the feedback value is smaller than the PID setting, the AC drive's output frequency
rises. For example, the winding tension control requires forward PID action.
• 1: Reverse action
When the feedback value is smaller than the PID setting, the AC drive's output frequency
reduces. For example, the unwinding tension control requires reverse PID action.
Notes
that this function is influenced by the DI function 35 "Reverse PID action direction".
Property
Default Setting Range Parameter Name
Function
Code
☆
1000 0–65535
PID setting feedback
range
10-04
This parameter is a non-dimensional unit. It is used for PID setting display (D0-15) and
PID feedback display (D0-16).
Relative value 100% of PID setting feedback corresponds to the value of 10-04. If 10-04 is
set to 2000 and PID setting is 100.0%, the PID setting display (D0-15) is 2000.
Property
Default Setting Range Parameter Name
Function
Code
☆
20.0 0.0–100.0 Proportional gain Kp1 10-05
☆ 2.00s 0.01–10.00s Integral time Ti1 10-06
☆ 0.000s 0.00–10.000 Differential time Td1 10-07
• 10-05 (Proportional gain Kp1)
It decides the regulating intensity of the PID regulator. The higher the Kp1 is, the larger
the regulating intensity is. The value 100.0 indicates when the deviation between PID
feedback and PID setting is 100.0%, the adjustment amplitude of the PID regulator on the
output frequency reference is the maximum frequency.
• 10-06 (Integral time Ti1)
It decides the integral regulating intensity. The shorter the integral time is, the larger the
regulating intensity is. When the deviation between PID feedback and PID setting is
100.0%, the integral regulator performs continuous adjustment for the time set in 10-06.
Then the adjustment amplitude reaches the maximum frequency.