Studer VarioString VS-120, Руководство пользователя

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Studer Innotec SA
VarioString
26 V 2.3 User manual
When this phase is authorized, it can be started manually by pressing for 2 seconds the “SET” button
on the front of the VarioString. The countdown for the equalization time starts as soon as the
equalization voltage {14021} is reached and lasts as long as the battery voltage is higher than the
absorption voltage {14009}.
When authorized, the equalization phase is carried out at fixed intervals {14023} before the absorption
phase. The equalization phase may be applied after the absorption phase by modifying parameter
{14019}. During this phase, the charge current value can be limited by the parameter {14020}.
By default, equalization is forbidden because it is incompatible with gel or AGM type batteries. It may
be authorized by parameter {14017}. The equalization can also be authorized depending on the
setting of the DIP switch inside of the equipment (see chap. 9.1).
Caution: the equalization of open liquid electrolyte batteries (vented) produces highly
explosive gas. The battery room and/or compartment must be adequately ventilated.
Be careful: this charging phase may bring the batteries to voltage levels that can damage
a sensitive load connected to the battery. Check that the connected loads are
compatible with the highest voltage levels possible taking into account any
compensation of the temperature sensor.
A too long or frequent equalization phase can lead to an excessive consumption of
electrolyte, a premature ageing or destruction of the battery. Follow scrupulously the
instructions and recommendations of your battery supplier. Incorrect values which do not
comply with the manufacturer's instructions can lead to a premature ageing and even
the destruction of the batteries.
For more information, contact your battery supplier who will inform you on the values to be applied
for their products.
7.2.5 Temperature compensation
If a BTS-01 or BSP-500/1200 temperature sensor is used, the voltage adjustment thresholds for charging
the battery (absorption, equalization, floating…) are automatically corrected in real time according
to the battery temperature.
The value of this compensation in mV/°C/cell for a reference temperature of 25°C is set by parameter
{14035} to -3mV/°C/cell. For example: for a 48V battery (24 cells of 2V) at a temperature of 30°C, the
voltage compensation is: (30-25)*24*(-3/1000) = -0.36V. For a floating voltage value {14005} set to
54.4V the effective floating voltage (compensated) will be 54.0V.
7.3 D
EFAULT BATTERY CHARGE CYCLE
(
ORIGINAL SETTINGS
)
The charge cycle set by default does not allow the
equalization phase and carries out only phase 1 (bulk),
2 (absorption) and 4 (floating) as per the figure to the right.
These factory parameter values of the VarioString are
adapted to open lead-acid batteries, with no equalization,
with an absorption voltage of 57,6V for 2h and a floating
voltage of 54.4V (equivalent to the “off” position of the DIP
switches n° 2, 3 and 4 when the VarioString is configured using
the internal DIP switch).
7.4 R
ECOVERY AFTER DEEP DISCHARGE
If the batteries are subjected to a deep discharge, the VarioString is capable of recharging them as
long as the battery voltage is above 18V. The recharge battery current is limited to 40A until the
battery voltage reaches 38V. Then, the VarioString can work at full power.