4. Electrical connection
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4.5 Connection of external signal transmitters and sensors
For the proper functioning of the automatic detection of the operating mode, the fol-
lowing wiring is necessary:
The corresponding list of the numbering is on the next page.
for the detection of the cooling mode
-
if possible by permanent signal of the external control “cooling active”
(uncommon)
- or by trigger signal ->
(compressor ON, evaporator valve ON or ice water pump
ON…)
see graphic on the next page.
Safety function: Cooling was not switched on (see section 8.2)
- by signal milk feed pump - see parameter [h2]
- the signal of the milk feed pump cannot be used due to a change in temperature
“first milk in tank [h2]
for the detection of the cleaning mode
-
if possible by permanent signal “cleaning active” of the external cooling tank
control
- or by start signal -> cold water valve ON
Optional: To be able to monitor other milk tank components, wire as follows:
for the agitator detection
1
-
by signal “agitator 1” of the external cooling tank control
for the agitator detection 2
-
by signal “agitator 2” of the external cooling tank control
for the detection “container alkaline empty”
-
by signal “float switch alkaline”
for the detection “container acidic empty”
-
by signal “float switch acidic”
for the detection
“motor protection switch compressor”
- by signal auxiliary contact motor protection switch
for the detection “level detected after cleaning”
-
by signal “level input”
After the connection of the external signal transmitters and sensors:
Test the correct wiring.
To test the correct wiring the functions of the corresponding inputs can be tested in
parameters “o.21” to “o.42”.
1.1
1
2
3
4
5
6
7
8
