BENCH TEST PROCEDURE: SC1

Test equipment required: Digital Multimeter, Adjustable Power supply

Nominal Voltage Power Supply Range

12 10-18 Vdc

24 20-36 Vdc

36 30-48 Vdc

48 40-64 Vdc

All measurements described in this procedure should be made at the controller terminals.

1) Make sure that there is a jumper between Battery(+) and Battery Voltage Sense(+) and one between Battery(-) and Battery Voltage Sense(-).

2) Check continuity between Battery(-),Solar Panel(-) and Load(-).

3) Turn off the load circuit breaker and measure the resistance between Load(+) and Battery(+). It should be open (more than 10M ohm). Turn on the load circuit breaker and re-measure. It should be less than 0.2 ohm.

4) Measure the resistance between Solar Panel(+) and Battery(+). It should be open.

5) Set the power supply to the nominal system voltage. Connect the power supply negative to the controller Battery(-) terminal. Connect the power supply positive to the controller Solar Panel(+) terminal. For 36 volt and 48 volt chargers, briefly connect a jumper between Solar Panel(+) and Battery(+). When the charge mode light turns on, remove the jumper.

6) Verify that the charge mode light is on. Measure and note the voltage between Solar Panel(+) and Solar Panel(-).

7) Measure the voltage between Battery(+) and Battery(-). It should be the same as the voltage measured in step 6 to within +/- 0.1 volt. Measure the voltage between Load(+) and Load(-). It should be the same as the voltage measured in step 6 to within +/- 0.1 volt.

8) Install a jumper between Battery(+) and Solar Panel(+).

9) Verify the charge termination and charge resumption set-points by changing the power supply voltage up and down and observing the activation of the “CHARGE MODE” light.

10) Set the LVD switch to AUTO LVD. Verify the load disconnect and load reconnect set-points by changing the power supply voltage up and down and observing the activation of the load disconnected light. There is a time delay on the load disconnect circuit. The set-points must be approached slowly to avoid overshooting. With the controller in the load disconnected mode, press the MANUAL RESET and verify that the light goes off momentarily. Set the LVD switch to NO LVD and verify that the load disconnect does not activate.

11) For 12 and 24 volt controllers only; remove the jumper between Battery(+) and Solar Panel(+). Increase the power supply voltage to 18 volts for a 12 volt system or 36 volts for a 24 volt system. Measure the voltage between Battery(+) and Battery(-). It should be about the float voltage.