Inovance MD500T75GB-INT - Page 108

6. Description of Parameters
- 107 -
6
Function Code Parameter Name Setting Range Default
FA-15
Proportional gain Kp2 0.0 to 100.0 20.0
FA-16
Integral time Ti2 0.01s to 10.00s 2.00s
FA-17
Differential time Td2 0.000s to 10.000s 0.000s
FA-18
PID parameter
switchover condition
0: No switchover
1: Switchover via DI
2: Auto switchover based on PID
error
3: Auto switchover based on running
frequency
0
FA-19
PID error 1 for auto
switchover
0.0% to FA-20 20.0%
FA-20
PID error 2 for auto
switchover
FA-19 to 100.0% 80.0%
FA-15 to FA-20: On some applications, switchover to another set of PID parameters may
be required to ne tune the overall performance as load conditions can vary during the
different machine cycles.
Switchover can be implemented via a DI terminal or automatically implemented according
to PID error level.
Figure 6-24 Switchover of two groups of PID parameters
PID
error
PID
parameters
PID
1
FA-19
FA-20
(FA-05, FA-06, FA-07)
PID
2
(FA-15, FA-16, FA-17)
Function Code Parameter Name Setting Range Default
FA-21
PID initial value 0.0% to 100.0% 0.0%
FA-22
PID initial value active time 0.00s to 650.00s 0.00s
FA-21 and FA-22: When the AC drive starts, the PID function turns active only after PID
output is xed at PID initial value (FA-21) for time set in FA-22.
Figure 6-25 The PID initial value function
Time
Output
frequency
FA
- 21
FA
-
22