10.1.4 Parameter [Liquid]
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Parameter Liquid
Unit Stop
Water
Powder
Stirrer
Level
Min Setpoint Freq.Inv.:
A0877
Liquid
Maturing time:
Fig. 27: Parameter [Liquid]
Parameter
Factory setting
Adjustment range
Min. setpoint frequency converter
20 %
0 – 50 %
Maturing time
5 min
0 - 100 min
Concentrate pump minimum frequency
The liquid concentrate pump should be equipped with an
external fan so that the pump can be operated without limita‐
tions in the range from 0 to 86 Hz.
If a liquid concentrate pump is used without an external fan,
the winding of the pump motor must be protected against
overheating at low speeds. A minimum frequency is set
accordingly. If the actual frequency of the liquid concentrate
pump is lower than the set concentrate pump minimum fre‐
quency for a period > 5 seconds, then the system generates
a fault message.
[Warning: Liquid concentrate pump - min. capacity reached]
and the liquid concentrate pump continues running at the set
minimum frequency.
Counter measure: Increase the water flow rate or the desired
concentration.
Operating Menu [F2]
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