The User Manual of JAC200 Series General Frequency Converter
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FA-18
Feedback sourse
Default value
0
Set range
0
Not switched
1
Switched through D1 terminal
2
Automatically switched according to deviation
FA-19
PID parameter switching
deviation 1
Default value
20.0%
Set range
0.0%
～
FA-20
FA-20
PID parameter switching
deviation 2
Default value
80.0%
Set range
FA-19
～
100.0%
In some apllications, a group of PID parameters can not meet the needs of the whole operation, and
different parameters are needed under different circumstances
.
This group of function codes are used for the switching of two group of PID parameters, of which the
converter parameter FA-15~FA-17 is set in the same way with that of parameter FA-05~FA-07.
The two group of PID parameters can be either switched through multi-functional digital DI terminal or
automatically switched according to the deviation of PID.
To switch through multi-functional DI terminal, the function selection of multi-functional terminal should
be set to be 43(PID parameter switching terminal). If the terminal is effective, chose parameter group1
（
FA-05~FA-07
）
, if not, chose group2
（
FA-15~FA-17
）
.
To switch automatically, if the absolute value of deviation between given value and feedback value is lower
than PID parameter switching deviation1 FA-19, parameter group1 should be chosen, and if it is higher than
PID switching deviation 2 FA-20
，
parameter group 2 should be chosen. If the given value and feedback
value deviation is between switching diviation1 and 2, PID parameter should be the linear interpolation
value of the two groups of parameter, as is illustrated by Fig 6-27.
Fig6-27 PID parameter switching
FA-21
PID starter
Default value
0.0%
Set range
0.0%
～
100.0%
