Redarc SRP0120, SRP0240 Instruction Manual
Solar Regulator
SRP0120 / SRP0240
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THE SOLAR REGULATOR
REDARC solar regulators ensure that the power supplied by your solar panels is at the right voltage to
charge your house or auxiliary batteries. REDARC solar regulators are PWM controlled and incorporate
automatic system voltage detection.
Our regulators are suitable for charging up to two separate battery banks and come in both 10A and
20A models which are capable of charging either 12V or 24V battery systems.
When two batteries are connected, the percentage of charge into either battery can be adjusted by
changing the priority setting.
WARNING & SAFETY INSTRUCTIONS
This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they are supervised or have been
instructed on how to use the appliance by a person responsible for their safety. Children should be
supervised to ensure that they do not play with the appliance.
Do NOT use the Regulator to charge non-rechargeable batteries. Doing so may result in harm to
the user and/or damage to the Regulator and/or Solar Panel. Only use the Regulator for charging
Standard Lead Acid, Calcium content, Gel & AGM type 12V batteries.
All lead acid batteries produce harmful, explosive gases. The Battery should be mounted in a well
ventilated area, as far as possible from any ignition sources. Do NOT smoke when in the vicinity of
the battery under charge.
Battery acid is a harmful substance. Care should be taken when working with lead acid batteries,
if the acid comes into contact with your eyes or skin, immediately wash the affected area with cold
running water and seek medical assistance. Eye protection and gloves should be worn when handling
lead acid batteries.
The Regulator will achieve best results when proper battery maintenance is regularly performed. This
includes but is not limited to checking water and specific gravity levels of the battery.
Warning! Check the manufacturers data for your battery and ensure that the ‘Maximum’ voltage of
the profile you select does not exceed the manufacturers recommended maximum charging voltage.
If the ‘Maximum’ voltage for your battery type is too high, please select another charging profile.
SAL.FOR.Instruction Manual Solar Regulators – DOC393 – Version 3
SPECIFICATIONS
DIMENSIONS
146mm
153mm
37mm
50mm
76mm
GENERAL SPECIFICATIONS
System Voltage
Battery Type
Maximum Voltage*
Float Voltage*
Maximum Input Voltage
Battery Voltage Range
Boost Time
Standby Current Draw
Nominal Current Draw
AGM/Gel SLA Calcium AGM/Gel SLA Calcium
14.4V 14.6V 14.8V 28.8V 29.2V 29.6V
13.6V 13.6V 13.6V 27.2V 27.2V 27.2V
Remote Connection
Temp. Compensation
Terminals
Operating Temp.
*Charge profile voltages will change with temperature compensation
12V 24V
30V 55V
9 -15V 18 - 30V
2 hours
10mA
8-pin RJ-45
-30mV/12V/°C
4mm²
-35°C to +50°C
4mA
THE SOLAR REGULATOR
REGULATOR FUNCTION
Temperature sensor
Battery 1 charge status
Battery 2 charge status
Remote
temperature
sensor
(optional)
Battery type
Charge Priority
Charge Frequency
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2 1 6 5 4 3
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MODE
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1 2
LED Indication Chart
(on side of regulator)
Set Button
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Remote
monitor
(optional)
CONNECTION
The regulator should be connected to the battery according to the diagram above. The connection order
is indicated by the numbers circled.
1
Incorrect connection of the battery can damage the regulator.
The Remote temperature sensor is optional and the regulator will still operate without it connected.
The Remote monitor is optional and the regulator will still operate without it connected.
INDICATION
1. LED flash (fast) Short circuit - check the Solar panel and the battery to make sure that they
are connected correctly.
2. LED flash (slow) Fully charged.
3. LED ON Charging.
4. LED flash (occasional) Battery connected, no charge current.
5. LED OFF No connection or Over voltage - Check wires, reduce current draw (load),
reset the controller.
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