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739.704 | 11.10
3 Area of application
These instructions describe the functions and installation of a charge
controller for photovoltaic (PV) systems to be used for charging 12 V or
24 V lead-acid batteries in the hobby and leisure, residential, business, com-
mercial and small company areas.
The charge controller is only suitable for controlling solar modules. Never con-
nect any other type of charging source to the charge controller. This can de-
stroy the controller and / or the charging source. If other charging sources are
to be used together with the device, first consult your dealer or installer and
observe the information in the SOC calculation section of these instructions.
The controller is basically only suitable for use with the following types of
12 V or 24 V rechargeable batteries:
– Lead-acid batteries with liquid electrolyte
– Sealed lead-acid batteries; AGM, GEL
The respective battery type must be set in the controller, see Setting the
battery type to Gel / Liquid. Observe the instructions of the battery manu-
facturer before connecting the battery.
Important! The controller is not suitable for use with
nickel-cadmium, nickel-metal-hydride, lithium-ion or any other
types of rechargeable or non-rechargeable batteries. These
types of battery must not be connected to the controller. Be sure to
observe the safety instructions for the respective battery used.
The corresponding manufacturer's installation manual must be observed when
installing the remaining components, e.g. solar modules, batteries and load.
The controller is only suitable for indoor use. It must be
installed in a manner providing protection from weathering
influences such as rain and direct sunlight. Ventilation openings
must not be covered. The controller may only be used for the specified
intended purpose. Also make sure that the permissible model-specific
rated currents and voltages are not exceeded. No liability is accepted
when the device is used in a manner other than for the intended
purpose. Handle the product with care.
4 Controller protection functions
The controller is equipped with various systems for protecting its electron-
ics, the battery and connected load. Triggering of the protection devices
is indicated by an error message (Section Error messages). The protection
devices automatically reset when the error has been corrected.
Caution
Danger of damage to the controller. Despite the protective
functions, the controller can still be damaged when more than
one component is incorrectly connected.
The protective functions of the controller cover the following points:
•
Protection against reverse connected solar modules
The rated power of the solar modules must not exceed the rated power
of the controller!
•
Protection against reverse connected load devices on the load
output
Protects the controller but not the load device.
•
Protection against reverse connected battery
Charging and discharging of the battery are prevented.
•
Short circuit fuse at module input
•
Short circuit fuse at load output
•
Protection against excessive charging current
The controller disconnects the battery and switches off the load.
•
No-load protection when operated without battery or load
Load output is protected from the module voltage.
•
Reverse current protection
Prevents reverse current from flowing into the solar modules at night. An
additional reverse current diode is not required!
