KACO blueplanet gridsave eco 5.0 TR1 - Manual (Page 11)

Safety
Operating instructions for blueplanet-gridsave eco_EN Page 11
3.2.1.4 Battery temperature
The device monitors the battery temperature using the sensor provided.
The sensor must be fitted centrally on a side panel of the battery block. Good thermal contact between the sensor
and battery must be ensured.
The measured value of the battery temperature should be checked using the "GS eco link" software.
The set values for the charging voltage are compensated using the battery temperature. The default compensation
set is -5.5 mV/°C / cell with zero compensation at 25 °C.
Example:
Initial voltage
Battery temperature Number of battery cells Compensated charge voltage
55.2 26°C 24 55.2 +(26-25)x -0.0055 x 24= 55.07
Absorption voltage Battery temperature Number of battery cells Compensated charge voltage
57.6 6°C 24 57.6 +(6-25)x -0.0055 x 24= 60.11
During all charging phases the compensated charge voltage does not exceed the maximum voltage limit value.
This avoids an overcharge or an insufficient charge due to temperature influences and potential battery overheating
as a result.
The charge current is also limited by the battery temperature. At a battery temperature of over 45°C, for example
(adjustable value), the charge current is reduced. This protects the battery against overheating.
3.2.2 Management of renewable sources for off-grid applications
In off-grid applications, the device supplies the AC load with renewable energy. Any excess will be stored in the bat-
tery for later use. When the battery is fully charged and all loads are supplied, the surplus is not usable (the renew-
able energy is reduced or disconnected from the external controller). This type of loss can be reduced by adjusting
the generator start parameters to the specific site requirements.
3.2.2.1 Automatic generator control
The generator is controlled automatically via the digital signal or is manually adjustable via the installation setting.
During installation, the settings are configured to automatically run the generator:
– to limit the discharge depth of the battery to increase the battery service life.
– to ensure efficient energy output by supplying large continuous loads directly from the generator.
– load the generator during operation to the highest possible level to convert fuel into power efficiently.
– limit the start frequency of the generator as this shortens its service life and would increase the maintenance
requirements.
– to avoid noise in that the generator is started only for high loads or a deeply discharged battery late at night.
• In off-grid systems, the generator is started automatically for the following reasons:
– There are battery conditions, in particular a charge status that necessitates charging the battery via the gener-
ator.
– the load is higher than the design values of the device or a continuous load is large enough for the generator
to operate efficiently. If the generator load is exceeded, the device obtains additional power from the battery.
– There are time programs set up to operate the generator regularly at times of anticipated peak loads or other
convenient times.
– Generator test run If the generator has not been started automatically within the "Generator Exercise" time
window, the plant automatically performs a generator test run.
– A schedule has been activated where the generator is started when the device is to shut down. This means
that loads or vital equipment are always supplied with power.