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5) Setting of manual reset (MR) (Group 3-1A~)
This is the function to make correction manually while watching the result of controlling offset produced by carrying out control action with P or
P+D when OFF is set for I (integral time). If a value is set on the + side, the control result moves in the plus direction and it moves in the minus
direction if a value is set on the - side. The amount of movement is in proportion to numerical value.
Note 1: Even when auto tuning is executed with I=OFF, I=OFF remains unchanged and the value of Manual Reset (MR) is
automatically calculated and setting is made.
6) Setting of zone (Group 3-1A~)
In this screen a zone required for the zone PID function is set for each PID No.
Note 1: When the same zone value is set for two or more PID Nos., the smallest PID No. is executed.
Note 2: To use the zone PID function, 6-6. 9) Setting of zone hysteresis and 6-6. 10) Setting of zone PID mode should be carried out in
addition to setting of zone.
- 28 -
PID 1 P
1
: 3.0%
I
1
: OFF D
1
: 30s
MR: 0.0%
Zone: 0.0
°
C
↓
Setting range: -50.0~+50.0%
Initial value: 0.0 % for 1 output type
-50.0 % for 2 output type
PID 1 P
1
: 3.0%
I
1
: 120s D
1
: 30s
MR: 0.0%
Zone: 0.0
°
C
↓
Setting range: Within measuring range
Initial value: 0 unit
Zone PID function ...
When set value (SV) exceeds zones as illustrated below, this function automatically
switches PID Nos. to be executed.
PID No.3
PID No.2
PID No.1
PID No.1
Time
In the area in which no zone is set,
the nearest PID No. is used.
PID No.3 zone value
PID No.2 zone value
PID No.1 zone value
Set value (SV)
Содержание SR253 Series
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