Votronic SR 100 Digital User manual

Installation and Operating Manual
Solar Controller SR 100 Digital No. 3028
Please read the operating manual thoroughly prior to use, connection and start-up of the solar
controller.
The VOTRONIC Solar Controller SR 100 had been specially adapted to the requirements of the range camper,
caravan and boat, but it is also suitable for other self-contained solar systems. The unit will be connected between
solar module and solar battery, it is designed for 12 Volt systems and it works maintenance-free. An operation in
parallel and floating mode with (automatic) mains chargers, wind power systems or petrol-driven generators at
the same battery is possible without any problems.
Features:
Careful battery charging by continuous operation as pulse-width modulated shunt switching controller.
Operation with lead-acid or lead-gel batteries with a minimum capacity from 12 V / 30 Ah.
Least own electricity consumption in quiescent condition of only 2 mA (0.002 Amperes).
The integrated adapted on-board mains suppression filter ensures unproblematic parallel operation with
the dynamo of the vehicle, mains chargers, wind- and petrol-driven generators etc. at one battery.
Protection against reverse battery and overload by built-in fuse.
Functions:
1. Reverse Current Protection:
The reverse current protection avoids discharge of the battery by the solar module in case of insufficient solar
power (such as during the night). The light-emitting diode (LED) "Charge" is extinguished.
As soon as the solar power is sufficient, the LED "Charge" will be lighting and charging of the battery will be
started.
2. Overcharge protection:
With increasing battery capacity, the solar controller effects an automatic limitation of the battery charging
voltage to the cut-off voltage and decreases the average charging current down to trickle charge current. This
process is indicated by the LED "Full", which will be glowing dimly first and which becomes increasingly
brighter after that, while the brightness of the LED "Charge" will be reduced more and more.
If the battery voltage is reduced by current consumption, automatic charging will be effected
immediately, which is indicated by the two light-emitting diodes. Thus, the battery is always kept on
the best possible charging state.
3. Temperature Control:
Optimum charging is ensured by the temperature sensor being integrated in the SR 100, which effects an
automatic adaptation of the cut-off voltage of the battery to the prevailing temperature.
4. Indicator lamps "Full" and "Charge":
These light-emitting diodes (LED) are indicating the current operating state by varying brightness.
In case of unattended operation, the battery might be totally discharged due to too many consumers
and lack of solar power. We recommend protecting the battery by means of the following appliances:
Votronic Battery Protector 40 (Rating 12 V / 40 A) Order No. 3075
Votronic Battery Protector 100 (Rating 12 V /100 A) Order No. 3078
Open acid batteries and batteries being „maintenance-free according to EN / DIN“:
Check the acid level periodically!!
Recharge totally discharged batteries immediately!
Store only fully charged batteries and recharge them periodically!

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Installation:
The controller is mounted at the two casing flanges near the battery to ensure that the length of the
connection cable to the battery is as short as possible. It must always be protected from direct sunlight and
humidity. Always ensure sufficient ventilation of the unit (also in the wider environment). Never "wrap up"
the unit!
The solar controller SR 100 should be installed on an even, horizontal or vertical surface. If being
installed vertically, always observe the correct fitting position. Any other fitting position is not
admissible!
Vertical fitting position of the controller:
Start-up:
ALWAYS DISCONNECT THE POWER SUPPLY TO THE BATTERY PRIOR
TO WORKING ON THE ELECTRIC SYSTEM TO AVOID SHORT-
CIRCUITS!
The correct polarity (+ and -) of solar module and battery must imperatively be observed
(see connection plan)!
1. Withdraw the unit fuse.
2. Establish the connection to the battery.
3. Establish the connection to the solar module.
4. Reinsert the unit fuse (car fuse 7.5 A (brown) into the fuse holder of the SR 100).
If several small solar panels are used, they are connectedin parallel, i. e. the plus connections (+) are
connected to each other and theminus connections (-) as well. Please observe the connection plan.
Now the solar controller is ready for operation.
Further actions or maintenance of the unit are not required.
Technical Data:
Nominal Voltage: 12 V (Lead Battery)
Cut-off Voltage: 14.2 V @ 20-25 °C (light-emitting diode "Full" is lighting)
Capacity of Solar Module (recommended / max.): 12-100 Wp / 100 Wp
Capacity of Solar Module (recommended/max.): 0 - 6.5 A / 6.5 A
Max. Voltage Solar Module: 26 V
Own Electricity Consumption: 2 mA (0.002 A) in quiescent condition
Dimensions: 90 x 60 x 29 mm
Weight: 60 g

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Safety Regulations and Appropriate Application:
The solar controller has been designed according to the valid safety regulations.
Appropriate application is restricted to:
1. Charging of lead-gel or lead-acid batteries of the indicated nominal voltage and the supply of the
consumers being connected to these batteries in fixed installed systems.
2. With solar modules up to maximum capacity (Wp).
3. The indicated cable cross sections at the charging ports and at the module input.
4. With fuses of the indicated capacity near the battery to protect the cabling between battery and
charging ports.
5. Technically faultless condition.
6. Installation in a well-ventilated room, protected from rain, humidity, dust, aggressive battery gas, as
well as in an environment being free from condensation water.
Never use the unit at locations where the risk of gas or dust explosion exists!
Never operate the controller without battery.
Cables are always to be laid in such a way that damage is excluded. Observe to fasten them tightly.
The connection cables of the solar modules have always to be lead from below to the solar controller to
ensure that penetrating humidity cannot reach the controller in case of failure, and to avoid
destruction of the controller.
Never lay 12 V (24 V) cables and 230 V mains supply cables into the same cable conduit (empty conduit).
Check live cables or leads periodically for insulation faults, points of break or loosened connections.
Occurring defects must be remedied immediately.
The unit is to be disconnected from any connection prior to execution of electrically welding or work on the
electric system.
If the non-commercial end-user is not able to recognize the characteristic values being valid for a unit or the
regulations to be observed, a specialist is always to be consulted.
The user/buyer is obliged to observe any construction and safety regulations.
Except for the fuse, the unit is not equipped with parts, which can be replaced by the user.
Always use replacement car fuses of the indicated capacity!
Keep children away from the solar controller and the batteries.
Observe the safety regulations of the battery manufacturer.
Deaerate the battery room. Protect the unit fromaggressive battery gases.
Ensure sufficient ventilation of unit and module!
Strictly observe the instructions of the manufacturer for installation of the solar module.
Non-observance may result in injury or material damage.
The warranty period is 24 months from the purchase date (against presentation of the sales slip or invoice).
The warranty will be void in case of any inappropriate utilisation of the unit, if it is used beyond the technical
specification, in case of improper operation or external intervention. We do not assume any liability for any
damage resulting hereof. The liability exclusion is extended to any service being executed by third, which has
not been ordered by us in writing. Service is to be effected exclusively by VOTRONIC Lauterbach.
Declaration of Conformity:
According to the stipulations of the regulations 2006/95/EG,
2004/108/EG, 95/54/EG this product corresponds to the following
standards or standardized documents: EN55014; EN55022 B;
DIN14685; DIN40839-1; EN61000-4-2; EN61000-4-3; EN 61000-4-4.

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Connection Plan 12 V:
Observe:
1. Wrong polarity of the battery, unit overload etc. might result in damage of the unit or releases
the unit fuse.
Only use car flat plug fuses 7.5 A (code colour brown) for replacement!
2. Never operate the controller without battery.
Delivery Scope:
Solar Controller
Installation and Operating Manual
Subject to misprints, errors and technical modification without notice.
All rights reserved, particularly the right of reproduction. Copyright VOTRONIC 09/09.
Made in Germany by VOTRONIC GmbH & Co. KG, Johann-Friedrich-Diehm-Str. 10, 36341 LAUTERBACH / GERMANY
Phone: [phone] / 91173-0 Fax: [phone] E-Mail: [e-mail] Internet: www.votronic.de