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PV CHARGE CONTROLLER USER MANUAL
PV CHARGE CONTROLLER
USER MANUAL
SBL-2402 (48V/2A)
Rev.0 03/2008
7673-2402-2910 I. INTRODUCTION
The SBL-2402 PV Charge Controller is a sophisticated controller using advanced PWM charging
technology. It is designed for use with all types of PV panel/system and Seal or Wet Type Lead
Acid Batteries.
II. SAFETY PRECAUTIONS
1. DO NOT exceed the voltage or current ratings of the controller. Use only with a 48-volt
battery.
2. DO NOT SHORT CIRCUIT the solar array while connected to the controller. This will
DAMAGE the controller.
3. DO NOT SHORT CIRCUIT the load terminal (or WHITE wire to any BLACK wire) when
battery or PV panel is connected. This will DAMAGE the controller.
4. The negative terminal of the system conductor should be properly grounded for effective
lightning protection.
5. WARNING - Be very careful when working with batteries. Lead acid batteries can generate
explosive gases, and short circuits can draw thousands of amps from the battery. Read all
instructions provided with the battery.
III. OPERATION AND FUNCTIONS
1. 100% SOLID STATE: All power switching is done with MOSFET. No mechanical relays are
used.
2. BATTERY CHARGE REGULATION: the controller uses an advanced series PWM charge
control for constant voltage charging. A true 0 to 100% PWM duty cycle is very fast and stable
for highly efficient charging.
3. The controller can prevent the battery from discharging through the solar array at night. There is
no need to install a blocking diode for this purpose.
IV. CONTROL
(1) PV Terminal
(2) Battery Terminal
(3) Load Terminal with dual output cables
(4) RJ45 Power
(5) Sealed/Wet Type Battery Selection Wire IV. INSTALLATION
Warning : shorting the output terminals will damage this PV Controller
1. Connect the Bat- BLACK wire to the battery's negative terminal.
2. If you are using Wet-Type Lead Acid Battery, connect the Wet Type Battery wire to Bat-
BLACK wire. Otherwise, leave it disconnected.
(If you are not using wet-type lead acid battery, keep the Wet type battery away from other
wires.)
3. Connect the Bat+ RED to the battery's positive terminal.
4. Connect the Solar array using the PV- BLACK wire and the YELLOW PV+ wire. Be very
careful not to short circuit the solar array, or the controller will be damaged.
5. The controller prevents reverse current leakage at night, so a blocking diode is not required in
the system.
6. Connect the load (DC Lamp) using the Load BLACK wire and WHITE load positive wire. Be
very careful not to short circuit the load terminal, the controller will be damaged.
7. A negative earth ground at the battery is recommended for most effective lightning protection.
8. The controller can be mounted outdoors. Do not expose to ambient temperatures above 60°C.
Make sure that water will drain from inside the case.
9. The 22AWG RED and BLACK wire offers power for RJ45. V. SPECIFICATIONS
Model Number
SBL-2402
Battery System Voltage
48V
Max. PV Open Circuit Voltage
100V
Max PV Short Circuit Current
6A
PWM Setpoint
Sealed Type Battery Setting: 57.2V + 0.6V
Wet Type Battery Setting: 59.2V + 0.6V
Min. Operating Voltage
40V
Rated Charging Current
2A
Max. Charging Current (5 min.)
4A
Rated Load Current
2A
Low Battery Shutdown for load
< 40V + 1.0V
Low Battery Recover for load
>44V + 1.0V
Approvals
Designed and Manufactured to meet CE
Ambient Temperature Range
- 40 ~ +60 °C
Relative Humidity
100%