Instructions - Rittal
Instructions - Rittal
Instructions - Rittal
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7.4 Meaning of the control parameters<br />
No. Parameter Min. value Max. value Factory<br />
setting<br />
Fixed value control<br />
1<br />
2<br />
Setpoint temperature<br />
with fixed value control<br />
Switching hysteresis<br />
with fixed value control<br />
Combined control<br />
3<br />
Difference from room temperature<br />
10.0°C 30.0°C 20.0°C<br />
2 K 5 K 2 K<br />
-10.0°C 10.0°C 5.0°C<br />
4 Minimum setpoint 7.0°C P5 10.0°C<br />
5 Maximum setpoint P4 35.0°C 28.0°C<br />
6<br />
7<br />
8<br />
Switching hysteresis,<br />
combined control<br />
Tolerance for error message<br />
"F.01"<br />
Heater control<br />
(Medium)<br />
2 K 5 K 2 K<br />
3.0°C 15.0°C 5.0°C<br />
1.0°C<br />
5.0°C<br />
(+ OFF)<br />
9 Internal real-time clock - - -<br />
10<br />
11<br />
12<br />
Switching times<br />
Compressor<br />
Switching times<br />
Heater<br />
Lock "1"<br />
(password protection)<br />
OFF<br />
OFF ON OFF<br />
OFF ON OFF<br />
1 999 123<br />
13 Control mode Ct Ft Ft<br />
14<br />
Heater function antifreeze<br />
(optional)<br />
OFF ON OFF<br />
Setting Explanation<br />
7 Operation<br />
If fixed value control is set for parameter<br />
13, the setpoint temperature can be<br />
selected here.<br />
If fixed value control is set for parameter<br />
13, the switching hysteresis can be<br />
determined here.<br />
If combined control is set for parameter<br />
13, the setpoint temperature can be set<br />
with this parameter as the difference<br />
compared to room temperature. Negative<br />
values result in a setpoint above<br />
the ambient temperature.<br />
If combined control is set for parameter<br />
13, the lower setpoint can be limited<br />
with this value.<br />
If combined control is set for parameter<br />
13, the upper setpoint can be limited<br />
with this value.<br />
If combined control is set for parameter<br />
13, the switching hysteresis can be<br />
determined here.<br />
If the cooling medium temperature<br />
exceeds the activation temperature of<br />
the compressor by the value set here,<br />
error message F.01 and an alarm are<br />
generated.<br />
Optional: If a tank heater is installed.<br />
The heater will cut in if the tank temperature<br />
drops below the value set<br />
here.<br />
If OFF is set, the heater will never cut<br />
in.<br />
One after another, the hour (0 .. 24),<br />
minute (0 .. 59), year (00 .. 99), month<br />
(1 .. 12), day (1 .. 31), summertime<br />
(OFF, EU; USA, S1 .. S12, E1 .. E12)<br />
are displayed.<br />
Select the day of the week (1Mo .. 7Su,<br />
ESC), start time (hh, mm), end time<br />
(hh, mm)<br />
Only if P8 not OFF.<br />
Select the day of the week (1Mo .. 7Su,<br />
ESC), start time (hh, mm), end time<br />
(hh, mm)<br />
To call up parameters P13 .. P19, key<br />
number 123 must be set.<br />
Ct: Combined control<br />
Ft: Fixed value control<br />
Optional if a heater is installed.<br />
ON: +2°C OFF: +5°C<br />
Page 24 of 61<br />
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