Studer Innotec XTH 6000-48, XTH 8000-48, XTH 5000-24 Temperature is increased or the ventilation

STUDER Innotec				Xtender
The charge cycle, programmed by default,			ACin=OK
as shown in the example described in the
figure opposite, runs automatically.				{1138}
The line (28) indicates the development of				{1156}
the battery voltage.				{1140}
The lower line (29) indicates the battery	28
				{1159}
current (input and output).
The cycle starts with a continuous current	29	a	d	e
charge (a) adjusted by default according to
the configuration {1138}. If the ambient	Cycle de charge simplifié, sans limitation de
temperature is increased or the ventilation
			courant d'entrée
blocked, the current may be reduced and
become lower than the selected current.

Once the absorption voltage {1156) is reached, the cycle passes to voltage adjustment mode (d), known as the absorption phase, the duration of which is set by the configuration {1157}. The minimum interval between two absorption cycles is limited by the configuration {1161).

At the expiry of the absorption time, or if the absorption current is lower than the configuration {1159}, the voltage is set to a lower value {1140}. This phase (e) is known as the maintenance or “floating” phase.

If the battery voltage is lower than the critical disconnection threshold {1488} operation of the charger will be automatically prevented. Only the transfer relay is authorised to operate in this case. The battery must then be recharged by an external source up to a voltage higher than the critical disconnection threshold in order to allow the Xtender charger to operate.

Given the limiting function for the input current (see the following p. 19), it is perfectly normal for the charge current to be lower than the selected current if the limit of the AC input current {1107} is reached (b). In this event the AC IN indicator (45) flashes.

If the “smart boost” function is activated {1126} and the power required by the consumer exceeds the power of the source, the battery will be discharged (c) despite the presence of the grid or the generator. In this case the LED “charge” (4) goes out. The consumers must ensure that they have average consumption that is less than the power of the source (generator or public grid) in order to avoid a complete discharge of the battery. These situations are set out in the figure below.

			ACin=OK
								{1156}
								{1140}
28								{1143}
In								{1138}
								0
29
Out
a	b c	a	d	e	c	a	d	e
			Fig 3a
Charge cycle example with input current limitation and "smart boost”

If the BTS-01 temperature sensor is used, the voltage adjustment thresholds for the battery are corrected in real time by means of the battery temperature. The value of this correction is set by the configuration {1139} in the configuration table p. 34.

Installation and operating Instructions Xtender V1.3 Page 18