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The relationship between compressor and DM
After compressor start running, when 'setting return water temperature – actual return water temperature
constant temperature setting, and the electrical heater does not start, then enter constant temperature control
The temperature and its frequency during constant temperature program. Recorded by the above chart
T=T1-Ts+2 ,
T has 10 areas, from 0 to 9, the rule of constant
follow:
a)
when
T is changing
i) When
T is increasing, the frequency increase 1 to run
ii) When
T is decreasing, the frequency decrease 1 to run
b)
when
T stay at a area as 3 minutes, the rules as follow:
4
8: the present frequency increase 1( keep 10 min to increase 1)
3: frequency is unchanged
0 2: The present frequency decrease 1 to run, until the frequency is get to F1
2 Constant temperature of Integral
The constant area is from 00 to -600 (DM) It is running as integral changing.
When integral is coming to negative side, the frequency is increase 1 to run; the frequency
1
unchangeable until get to maximum integral;
will
When integral is coming to positive side, the frequency is decrease 1 to run; the frequency
2
will
unchangeable until get to minimum integral.
3
Room air constant temperature
a
When
T is increasing, the frequency increase 1 to run;
is get to maximum.
b) When
T is decreasing, the frequency is decrease 1 to run. If the present frequency is
frequency is unchangeable even if
Control
T=T1-Ts+2
+1.0
+0.5
0
0
1
-1
2
-2
3
-3
4
-4
5
-5
6
-6
7
-7
8
9
T decrease.
temperature program's frequency is
until get the maximum frequency.
T will unchangeable until
26
frequency
F1, the
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