Studer VarioString VS-120, Руководство пользователя

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VarioString
38 V 2.3 User manual
9.4.5.7.5 End of the absorption triggered by the current {14012} (no)
The absorption phase can be interrupted when the battery charging current goes under a certain
threshold, at which point the charger automatically passes to the next authorized phase. This can be
used in order to shorten the period under which a high voltage is applied and thus reduce water
consumption.
9.4.5.7.6 Current threshold to end absorption phase {14013} (10 Adc)
Progressively, during the absorption phase, the charging current decreases naturally. If the bulk
phase has been carried out with a current appropriate for the battery, it is not necessary to wait for
a certain period to finish charging. The absorption phase can be interrupted if the battery charge
current falls below a certain level.
This parameter sets the current under which the absorption phase is considered finished. When the
charger current goes below this value, the next phase (most often the floating phase) starts. If the
production of the PV generator is insufficient to keep the voltage, this current is not taken into
account and the absorption phase goes on.
9.4.5.8
Equalization phase {14016}
Some types of battery need equalization in order to avoid the stratification of the water and acid
they contain. Use the parameters hereafter to set the operating conditions of this charging phase as
described in chap. 7.2.4.
During an equalization phase, an emission of a highly explosive gas occurs
(hydrogen/oxygen). Follow carefully all the instructions of the battery manufacturer
regarding this phase. In any case, make sure that the battery room is adequately
ventilated. Equalization reduces the battery water level: check it regularly.
9.4.5.8.1 Equalization allowed {14017} (no)
Determines whether the equalization phase (triggered manually or automatically) is allowed or not.
9.4.5.8.2 Force equalization {14018}
Use this parameter to manually start the equalization phase. It is only possible to force an equalization
phase when it is authorized by {14017}.
9.4.5.8.3 Equalization voltage {14021} (62.4 Vdc)
This parameter determines the maximum voltage during the equalization phase.
9.4.5.8.4 Equalization current {14020} (80 Adc)
The equalization phase can be carried out with a limited current that can be adjusted using this
parameter. In any case, the current does not exceed the bulk current {14001}. As a rule, the limited
charging current is used only if the equalization is started at the end of the absorption phase.
9.4.5.8.5 Equalization duration {14022} (30 min)
This parameter determines the equalization period. The equalization phase starts as soon as the set
battery voltage exceeds the absorption voltage. When the period has elapsed, the charger goes
automatically to the following authorized phase. If the voltage cannot be kept (no sunshine,
clouds...), the countdown is paused.
Once equalization phase is initiated, disabling the phase does not stop the equalization.
To stop the equalization, force the transition into floating {14006}, absorption {14010} or a
new cycle {14028}. It is also possible to interrupt the equalization by pressing the "SET" button
for more than 2 seconds (procedure described in chap. 6.1.
This voltage is corrected by the temperature compensation factor {14035} if a temperature
sensor (BTS-01 or BSP) is installed in the system.