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8.6 Heating/Cooling control action (when setting dead band)
ON
Control action
OFF
Relay contact
output (OUT1)
+
Non-contact
voltage output
-
(OUT1)
+
DC current
-
output (OUT1)
Non-contact
relay output
(OUT2)
Indicator
(OUT1) Green
Lit
Indicator
(OUT2) Yellow
Unlit
: Acts ON (lit) or OFF (unlit).
: Represents Heating control action.
: Represents Cooling control action.
8.7 Heating/Cooling control action (when setting overlap band)
ON
Control action
OFF
Relay contact
output (OUT1)
Non-contact
voltage output
(OUT1)
DC current
output
(OUT1)
Non-contact
relay output
(OUT2)
Indicator
(OUT1) Green
Lit
Indicator
(OUT2) Yellow
Unlit
9. PID auto-tuning of this controller
In order to set each value of P, I, D and ARW automatically, the auto-tuning process should be made
to fluctuate to obtain an optimal value. One of 3 types of fluctuation below is automatically selected.
Sometimes the auto-tuning process will not fluctuate if auto-tuning is performed at or near room
temperature. Therefore auto-tuning might not finish normally.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
Heating P-band
Heating
action
SV setting
6
6
7
7
Cycle action is performed according to deviation.
6
6
+
12V DC
12/0V DC
-
7
7
Cycle action is performed according to deviation.
6
6
+
20mA DC
20 to 4mA DC
-
7
7
Changes continuously according to deviation.
Heating p-band
Cooling p-band
Overlap band
Heating
action
SV setting
6
6
7
7
Cycle action is performed according to deviation.
6
6
+
+
12V DC
12/0V DC
7
7
-
-
Cycle action is performed according to deviation.
6
6
+
+
20mA DC
20 to 4mA DC
7
7
-
-
Changes continuously according to deviation.
3
3
5
5
Cycle action is performed according to deviation.
Dead band
(Cooling P-band)
6
7
6
+
0V DC
-
7
6
+
4mA DC
-
7
3
3
5
5
Cycle action is performed according to deviation.
ON
(Cooling
action)
OFF
6
7
6
+
0V DC
7
-
6
+
4mA DC
7
-
3
5
Unlit
Lit
ON
(Cooling
action)
OFF
3
5
Unlit
Lit
: Acts ON (lit) or OFF (unlit).
: Represents Heating control action.
: Represents Cooling control action.
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