industrie technik DB-TA-33A - Parameter Setting; Setpoint Setting (Level 1); Password Setting (Level 1); System Type Selection (Level 2)

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PARAMETERS SETTING
LEVEL 1:
SEt Setpoint:
It allows to x the setpoint that corresponds to the room temperature required.
Setting range:
  
6,0...45,0 °C default value: 20,0°C
PAS Password:
access key to level 2: PAS=6.5.
access key to level 3: PAS=8.5. (only if remote sensor is used)
Setting range:
6,0...45,0 default value: 6,0
LEVEL 2:
tip Type of system:
It denes the type of system choosen: 2 pipe o 4 pipe system. According to selection done different parameters are
then visualized.
Setting range:
2P = 2 pipe systems
 4P = 4 pipe systems default value: 2P
2 pipe systems operating mode
bP Proportional band:
The proportional band is the part of output that changes proportionally with error signal. The default setpoint is on the
center of proportional band with parameter MAr = 5.0. Changing parameter MAr it is possible to move proportional
band around the setpoint. Out of the proportional band, the output signal is always saturated at 0 V or at 10 V.
Setting range:
 1,0...30,0 °C default value: 5,0°C
Output with only proportional action (without integral action)

reverse
action
direct
action
tI Integral time:
The integral time is the speed at which a corrective increase or decrease in ouput is made to compensate for offset
which usually accompanies proportional only processes. The more integral time entered, the slower the action. The
less integral time entered, the faster the action. A too small integral time can make the system oscillating.
To exclude integral action and make the unit a proportional regulator set the value of parameter to noI with key +.
Setting range:
1,0...30,0 minutes (with integral action)
noI (without integral action) default value: 20,0minutes
StA Working season:
It denes if 0...10 V output operates in direct action (cooling) or in reverse action (heating). According to setting done
it is possible to select the working season directly on unit or to decide to choose it remotely. On this last case it is
possible to have two possibilities:
- with a remote centralized switch connected between terminals 3 and 13 (see gure 1, contact opened = cooling
mode, contact closed = heating mode)
- with water sensor (buying code NTA020-027P) connected between terminals 13 and 14 and mounted upstream
the valve (see gure 2).
Setting range:
 H-> heating
Water temp.
Cooling mode Heating mode
C -> cooling
 rem -> remote selection default value: H