KE300A Inverter Parameter Description
138
Setting range
1
Switching via terminals
2
Automatic switching according to the deviation
PA-19
PID parameter switching deviation 1
Factory default
20.0%
Setting range
0.0% ~ PA-20
PA-20
PID parameter switching deviation 2
Factory default
80.0%
Setting range
PA-19 ~ 100.0%
In some applications, one group PID parameter is not enough, different PID parameters would be adopted
according to the situation.
The function codes are used to switch two groups PID parameter. The setting mode of the regulator
parameters PA-15~PA-17 is similar as PA-05~PA-07’s.
Two groups PID parameter can be switched via DI terminal, or switched according to PID deviation
automatically.
When selection is automatic switching: when the deviation absolute value between given and feedback is
smaller than PA-19 (PID parameter switching deviation 1), PID parameter selection is group 1. When the
deviation absolute value between given and feedback is bigger than PA-20 (PID parameter switching
deviation 2), PID parameter selection is group 2. When the deviation absolute value between given and
feedback is between PA-19 and PA-20, PID parameter is the linear interpolation of two groups PID
parameter, showed as figure 6-25.
PA-20
PA-19
PI
parameter
2
PA-15,PA-16,PA-17
PI
parameter
1
PA-05,PA-06,PA-07
PID
deviation
PI
parameter
Figure 6-25 PID parameter switching diagram
PA-21
PID initial value
Factory default
0.0%
Setting range
0.0% ~ 100.0%
PA-22
PID initial value holding time
Factory default
0.00s
Setting range
0.00s ~ 360.00s
When starting, PID output is PID initial value (PA-21), lasts for PID initial value holding time (PA-22), PID
starts close-loop regulate calculating.
