Pentax DSI-200 Series User Manual page 118

PID Parameter switching
deviation 1
PA-19
Set range
PID Parameter switching
deviation 2
PA-20
Set range
In some applications, a set of PID parameters cannot meet the needs of the entire operation
process, the need for different conditions using different PID parameters.
This set of function codes is used for two sets of PID parameters. The regulator parameters
PA-15 ~ PA-17 settings, and the parameters PA-05 ~ PA-07 similar.
Two sets of PID parameters can be switched through the multi-function digital S terminal,
or it can be switched automatically according to the deviation of the PID.
(PA-05 to PA-07) is selected when the terminal is inactive, the parameter group is selected
when the terminal is valid, when the multi-function terminal function selection is to be set
to 43 (PID parameter switching terminal) 2 (PA-15 to PA-17).
When the absolute value between the reference and feedback is less than the PID
parameter switching deviation 1 PA-19, the PID parameter selects the parameter group 1
when the automatic switching is selected. When the absolute value of the deviation
between the reference and the feedback is greater than the PID switching deviation 2 PA-
20, the PID parameter selection selects the parameter group 2. When the deviation
between the reference and the feedback is between the switching deviation 1 and the
switching deviation 2, the PID parameter is the linear interpolation value of the two sets
of PID parameters, as shown in Figure 6-26.
PID initial value
PA-21
Set range
PID Initial value hold time
PA-22
Set range
When the inverter starts, the PID output is fixed to the PID initial value PA-21, and the
PID continues to be closed-loop when the PID is maintained at the initial value of PA-22.
Factory default
Factory default
Figure 6-26 PID data parameter switching
0.0%～PA-20
PA-19～100.0%
Factory
default
0.0%～100.0%
Factory
default
0.00s～650.00s
- 118 -
20.0%
80.0%
0.0%
0.00s