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AB Industrietechnik srl – Via Julius Durst, 70 – 39042 BRESSANONE (BZ) Italy – Tel: +39 0472/830626 – info@industrietechnik.it – www.industrietechnik.it
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The “
COOL
” icon is displayed to indicate that cooling mode is active.
• The PID type controller operates in the following way for modulating control:
Control temp.
100
0
I21
Output
AO1
WCS
WCS
FRPSHQVDWLRQVHWSRLQWFDOFXODWHGRQWKHEDVLVRIWKHFRPSHQVDWLRQFXUYHVHHSDUDJUDSK
“18. Control with com-
SHQVDWHGVHWSRLQW´SDJH
57
.
$2FRQWUROYDOYH
If the operating temperature rises above
WCS
, the
AO1
valve starts to open. The
icon is displayed.
The valve may be controlled with
- P action (if the integral cooling time
I22
=0 and the derivative cooling time
I23
=0),
- PI action (if the integral cooling time
I22
DQGWKHGHULYDWLYHFRROLQJWLPH
I23
=0)
- PID action (if the integral cooling time
I22
DQGWKHGHULYDWLYHFRROLQJWLPH
I23
The
icon switches off if the
AO1
valve closes again.
• The ON/OFF type controller operates in the following way:
100
0
Regulation temp.
Output
I21
DOx
WCS
WCS
FRPSHQVDWLRQVHWSRLQWFDOFXODWHGRQWKHEDVLVRIWKHFRPSHQVDWLRQFXUYHVHHSDUDJUDSK
“18. Control with com-
SHQVDWHGVHWSRLQW´SDJH
57
.
'2[FRQWUROYDOYH
If the operating temperature rises above
WCS
+ (
I21
:
2) the valve is enabled. The
icon is displayed.
If the temperature drops below
WCS
- (
I21
:
2) the valve is disabled and the
icon turns off.
Note: one of the following conditions closes the valve:
• Regulator
OFF
• Condensation
alarm
•
Dew point alarm (if the dew point control function is enabled)
•
&RQWUROVHQVRURSHQRULQVKRUWFLUFXLWRUQRWGH¿QHG
M08
=15 and
M10
=15 and
M12
=15)
•
/LPLWVHQVRURSHQRULQVKRUWFLUFXLWRUQRWGH¿QHG
M08
=15 and
M10
=15 and
M12
=15) of the limit function is enabled
(
I32
DQGRU
I34
•
Low temperature limit alarm (if the low supply limit function is enabled
I32
•
+LJKWHPSHUDWXUHDODUPIURPFRQWDFWLIDGLJLWDOLQSXWZDVFRQ¿JXUHGDVKLJKWHPSHUDWXUHFRQWDFW
M04
=7 or
M06
=7)
•
No control requested from all SLAVE_X controllers.
