St Stable Range; Manual Setup - Omron E5AZ User Manual

Determining PID Constants (AT, ST, Manual Setup)
1,2,3...
3-8-4

ST Stable Range

Operation Procedure
1,2,3...
Advanced function setting level
ST stable range
3-8-5

Manual Setup

Operation Procedure
1,2,3...
Adjustment level
AT execute/
cancel
at
off
Proportional
C
p
band
8.0
C p
10.0
38
(3) In this state, the change width of the PV every 60 seconds is at the ST
stable range or less.
PID constants are not modified for the currently preset set point by self-tuning
(ST) in the following instances:
1. When the PID constants have been changed manually with ST set to ON.
2. When auto-tuning (AT) has been executed.
The ST stable range is a condition for determining the conditions under which
ST (self-tuning) functions.
In this example, let's set the ST stable range to 20 ° C.
1. Select the "ST stable range" parameter by pressing the
vanced function setting level".
To move to this level, see 4-8 Moving to the Advanced Function Setting
Level.
2. Set to 20 ° C (deviation) using the
The individual PID constants can be manually set in the "proportional band",
"integral time", and "derivative time" parameters in the "adjustment level".
In this example, let's set the "proportional band" parameter to "10.0", the "inte-
gral time" parameter to "250" and the "derivative time" parameter to "45".
1. Press the key to move from the "operation level" to the "adjustment
level".
2. Select "proportional band" by pressing the
3. Press the or
or key.
key to set the parameter to "10.0".
Section 3-8
key in the "ad-
key