Floating Phase {10004} (Menu); Absorption Phase {10007} (Menu) - Studer VarioTrack VT-40 User Manual

The battery setting is carried out under the responsibility of the operator. An incorrect setting
that does not meet the battery charging methods recommended by the manufacturer
may be dangerous and/or considerably reduce the battery service life. If the factory
settings are modified, the new values must be entered in the parameter table at the end of
this manual.
8.4.5.1 Synchronization of a battery cycle with an Xtender {10037} (yes)
This parameter appears on the basic menu and is described in chapter 8.4.4.2.
When this parameter {10037} is activated, all other parameters involved in the battery
cycle are hidden and not accessible. In this case, only the maximum charging current is
adjustable.
If an Xtender inverter/charger is interconnected (communication) to one/several
VarioTrack, the Xtender battery cycle will be imposed to the VarioTrack of the system. This
function may be disabled by parameter {10037}. If no Xtender is connected to the
VarioTrack, the latter uses its own setting.
8.4.5.2 Battery undervoltage {10334} (10/20/40 Vdc)
This parameter sets the undervoltage level of the battery. In case of battery undervoltage, the red
LED will blink 1x, a message is sent to the RCC and an event based on this undervoltage can be
programmed on the auxiliary relays.
8.4.6 Floating phase {10004} (menu)
8.4.6.1 Floating voltage {10005} (13,6V/27,2V/54,4V)
Determines the voltage applied when the battery is fully charged. This voltage prevents self-
discharge and keeps the battery to its optimum charge level.
8.4.6.2 Force floating phase {10006} (signal)
This parameter may be used to force a battery cycle in progress to assume the final values of the
floating voltage phase. If the battery voltage level is higher, the charger momentarily switches out
until the new target voltage is reached.
8.4.7 Absorption phase {10007} (menu)
During this phase, the battery accumulates the last percentages of power to be stored. This phase
takes place at a constant voltage. Over the course of this phase, the necessary current diminishes
progressively. Therefore, the VarioTrack does not work at the optimal point of the PV generator
because all the available PV power is not required.
8.4.7.1 Absorption phase allowed {10008} (yes)
This parameter determines whether the absorption phase is carried out or not. When this phase is
disabled, the charger goes directly to the following authorized phase (equalization, but most often
a floating phase).
8.4.7.2 Absorption voltage {10009} (14.4V/28.8V/57.6V)
Defines the applied voltage during absorption phase.
8.4.7.3 Force absorption phase {10010} (signal)
This signal starts again an absorption phase from the floating phase.
The charge indicator (2) flashes 2x indicating that the equalization phase is on-going.
8.4.7.4 Absorption duration {10011} (120min)
Use this parameter to set the absorption duration. The absorption phase starts once the set tension
{10009} is reached. When the time is over (see chap. 7.2.2), the charger goes automatically to the
following authorized phase.
Manuel utilisateur V 4.0
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VarioTrack
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