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Deep Discharge Protection 12/24V 6A with Charge State Indicator
and additional useful options such as:
Dear customer,
you have purchased a powerful and compact deep discharge protection device of this class. Thank you very much for your confidence in our products.
You should carefully read the instructions for use prior to using your deep discharge protection unit.
Prior to putting the deep discharge protection into service, please read the instructions for use completely! For the protection of a lead battery, the deep discharge
protection is – next to the charge control – an extremely important factor for maximizing the useful life of a battery. Since most charge controllers are already equipped
with a deep discharge protection, this control unit also offers additional adjustment possibilities and increased convenience which cannot be provided by a deep discharge
protection integrated into the charge controller. Load current-led deep discharge protection and charge state indicator.
This deep discharge protection can also be converted to the following options: surplus principle / priority principle / continuous deep discharge protection / 12/24V system.
The corresponding programming steps can be found under "Adjustment" in connection with figure 2.
The deep discharge protection is factory-set as a current-led deep discharge protection with charge state indicator. However, if you want to use one of the optional
controller variations, adjustments need to be made prior to the installation of the control unite.
ATTENTION!!! Important safety precautions!!!
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Do not use the deep discharge protection under adverse environmental conditions. Adverse environmental conditions include: environmental temperatures above
50° C, flammable gases, solvents, vapors, dust, relative humidity above 80 % and wetness.
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The device may only be operated in dry and enclosed rooms.
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If it can be assumed that a safe operation is no longer possible, then the device must be switched off and preventive measures against an unintentional operation
must be taken. A safe operation can no longer be assumed if the device shows visible signs of damage, in the event of transportation damage, after the device has
been stored under adverse conditions.
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The sequential order during connection must be observed! The disconnection is made in reverse order (see installation).
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In order to avoid short circuits on the conductor between the deep discharge protection and battery, a fuse must be installed on the positive pole.
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Consumer loads that, on account of their function, must not be disconnected from the rechargeable battery through the load cutoff, have to be connected directly to
the rechargeable battery via a fuse.
FUNCTIONAL DESCRIPTION
Dynamic deep discharge protection
Batteries must be protected against excessive discharge. The residual battery capacity is determined on the basis of the battery voltage and the load current and ensures
a better deep discharge protection than traditional controllers with a constant load switching off threshold.
For example: The battery voltage value where consumer loads with high current consumption are switched off is lower than the battery voltage in the case of consumer
loads with low current drain. However, the residual capacity remaining in the battery after the cutoff is the same in both cases.
After the battery has been recharged and the load resetting threshold has been exceeded, the consumer loads are automatically switched on again. In order to use the
dynamic deep discharge protection, it is necessary to connect the output with the load minus terminal (see fig. 1).
Deep discharge advance warning via charge state indicator
Three light-emitting diodes (two red and one green LED) provide information on the state of the equipment.
The charge state of the battery can be determined with the help of the illuminated LED.
The 'rechargeable battery full' LED is illuminated:
The 'rechargeable battery full' LED and the 'rechargeable battery empty' LED are illuminated:
The 'rechargeable battery empty' LED is illuminated:
The 'overload' LED is illuminated:
The 'overload' LED indicates that all connected consumer loads have been switched off automatically as a protection against deep discharge. By recharging the battery,
the devices previously switched off by the deep discharge protection are automatically switched on again. Particularly when leaving your solar system in the case of deep
discharge, undesired automatic resetting should be prevented by manually turning off the consumer loads with the on/off switch on the respective piece of equipment. The
'overload' LED will go off when no more consumer loads can be switched on automatically.
INSTALLATION
Please note that all simultaneously connected consumer loads may not draw more current than the maximum permissible load current.
Notes regarding the installation
The control unit must be mounted in a location where it is protected against the effects of the weather. In order to use the functions of the controller, it must be connected
to the battery and the consumer loads.
All system components, i.e. the battery and the consumer loads, must be matched to each other with respect to their respective voltages. This must be checked prior to
the installation! Please observe the stated order during the installation:
1.
Connect the battery at the provided screw-type terminals on the controller. In order to keep the voltage drop and thus the attendant cable heating low, the largest
possible cable cross-sectional area is recommended (see technical specifications). A fuse protection of the battery conductor can only be omitted if short circuit-
proof connection lines are installed. Otherwise, a fuse must be provided directly to the positive pole of the battery in order to prevent a short circuit on the conductor
to the control unit.
2.
Connect the consumer loads to the control unit.
3.
In order to use the dynamic deep discharge protection, the I output must be connected with the load minus terminal. If this connection is not installed, the controller
will operate with constant load shedding threshold.
Fig. 1: Factory-set terminal pin assignment; in order to use the options, the I output must be connected in accordance with the "Adjustments". The terminal pin
assignment can be determined on the basis of the symbols on the controller or from fig. 1.
Warnings
1.
Short circuits absolutely have to be avoided: fire hazard!
2.
Consumer loads that may not be switched off on account of their function must be connected directly to the battery and protected against short circuit (e. g. position
lights).
3.
On direct-current voltage systems, spark formation may occur, particularly during the connection, but also during the operation. Do not install PV components in
rooms where highly flammable gas mixtures may occur (for example gas containers, varnishes, solvents). In case of doubt, always consult an expert.
USER MANUAL
surplus management
priority cut-off
Battery is full
Battery is partly discharged
Imminent consumer load cutoff
Deep discharge protection is activated (the consumer load is
switched off)
b/n 200030
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