Temperature Compensation; Default Battery Charge Cycle (Original Settings); Configuring The Variotrack(S) - Studer VarioTrack VT-40 User Manual

Studer Innotec SA
VarioTrack
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.
Caution: 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 his products.

7.2.5 Temperature compensation

If a BTS-01 or BSP 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
{10036} to -3mV/°C/cell. For example: for a 24V battery (12 cells of 2V) at a temperature of 30°C, the
voltage compensation is: (30-25)*12*(-3/1000) = -0.18V
For a floating voltage value {10005} set to 27.2V, the effective floating voltage (compensated) will
be 27.02V.
Before opening the VarioTrack, it is absolutely mandatory to disconnect all DC sources
(battery and PV) from the equipment to avoid any danger. Before opening the equipment,
let the internal filtering capacitors to discharge.
7.3 D
EFAULT BATTERY CHARGE CYCLE
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 VarioTrack are
adapted to open lead-acid batteries, with no
equalization, with
14,4/28,8/57,6V for 2h and a floating voltage of
13,6/27,2/54.4V (equivalent to the "off" position of the
DIP switches n° 2, 3 and 4 when the VarioTrack is
configured using the internal DIP switch bank).

8 CONFIGURING THE VARIOTRACK(S)

The VarioTrack can be configured simply, allowing charge behaviours that meet perfectly the
requirements of most lead-acid batteries. This configuration can be carried out using the DIP switches
(9) inside of the equipment to set the various configurations according to the position of each DIP
switch.
24
(
ORIGINAL SETTINGS
an absorption voltage
)
of
V 4.0 User manual