Mitsubishi Electric MELSEC-Q Series User Manual page 64

3 SPECIFICATIONS
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(c) Zone PID data
The zone PID data divides input range into 8 zones by zone upper limit setting,
and then sets the PID constants and control response parameters used for each
zone.
Zone dividing is performed by the upper limit setting (refer to the table on the next
page for the buffer memory area) of zone 1 to 8.
Selecting the PID constants and control response parameters used in each
segment is performed by the zone PID data No. (refer to the table on the previous
page for the buffer memory area) in the program pattern data.
There are following three types for selecting the method.
1) When selecting optionally the PID constants and control response parameters
Set 1 to 8 to the zone PID data No. for each segment.
The Q62HLC performs the control using the PID constants and control
response parameter of zone 1 to 8.
2) When selecting automatically the PID constants and control response
parameters
Set 0 to the zone PID data No.
The Q62HLC performs the control after automatically selecting the zone
including the set value of segment in execution.
If the characteristics of control target differ depending on the zone, the control
performance can be improved being compared with the case where a single
PID constant is used for controlling.
3) When controlling with a single PID constant and control response parameter
Set Zone 1 upper limit is as input range upper limit, and set 0 to Zone PID data
No. for each segment.
The Q62HLC performs the control using the PID constant and control
response parameter of zone 1.
Example) When the input range is divided into 3 zones, and then 2 is set to Zone
PID data No. for the segment 1 and 2, 3 is set for the segment 3 and 4,
and 1 is set for the segment 5 and 6 (refer to the table on the following
page for the buffer memory area)
MELSEC-Q
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