Carel pCO

15
It is used during the preliminary operations, and whenever it is impossible to have
access to the branch MASTER password (because the memory has been
"spoiled").
- MASTER password: the value of this password is selected in the password set
mask. It must be used during the normal working of the machine;
- having correctly selected the password, press
Enter
; you reach the mask
indicating the branch "Special Procedures";
- you are now in the INSCONFIG mask which permit the erasure and the
installation of the default values in the buffer storage; pressing once
or
allows to change the answer to the question from NOT to YES.
Do not do any
operation and wait until the text becomes again No.
Now the installation of the default values is completed.
2. - CONFIGURATION GUIDE
2.1 SET-POINT - DIFFERENTIAL - DEAD ZONE
Temperature control may be based on a proportional or proportional + integral
regulation that can be selected by entering the GTEMP2 mask, the branch is named
"Temperature Management" under password “service”.
The proportional control works in a proportional way in function of the difference
between the required temperature or humidity value (
SET-POINT
) and the actual
value.
The P+I regulation is based on the error between the required temperature and the
measured temperature in relation to the moment in which the difference between
the two values persists (the integration constant can be selected in the GTEMP5
mask).
The humidity control is a proportional control; the humidifier is activated when the
relative humidity value is lower than the "set-point-differential".
The
PROPORTIONAL BAND
defines the temperature/humidity control area. The
more the value differs from the selected Set-point the greater is the control effect.
-The selected differential is half of the total differential: for temperature control, the 3
Centigrade Degrees selected as default values are to be intended above and below
the set-point; in case there are 3 heaters and 2 compressors, the latter will turn ON
when the set-point is 23 degrees (default) + differential (3 degrees), whereas all
heaters will be active at 20 degrees.
- The selected
DEAD ZONE
corresponds to a half of the total dead zone; the dead
zone prevents the control action when the temperature values are near the set-point.