SunSaver Testing Instructions

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SunSaver

Bench Testing Procedures

Abstract:

The following Bench test procedures pertain to individuals with access to an external power

supply, a battery, and the necessary tools and equipment listed below. For on-site testing and

troubleshooting where an external power supply is not available, refer to the SunSaver Field

Testing document.

Technical Documentation

T e c h n i c a l D o c u m e n t a t i o n

Summary of content (4 pages)

PAGE 1
Te c h n i c a l D o c u m e n t a t i o n SunSaver Bench Testing Procedures Abstract: The following Bench test procedures pertain to individuals with access to an external power supply, a battery, and the necessary tools and equipment listed below. For on-site testing and troubleshooting where an external power supply is not available, refer to the SunSaver Field Testing document.
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Note: Due to the fabrication process of the SunSaver controller, the exact damaged component may not be evident. It may only be possible to determine if the unit is functioning properly. However, other factors may be apparent that will assist the technician in determining the cause of the failure. Recommended Tools: • • • Digital Multi-meter with fine tip probes (frequency and duty cycle measurements helpful) Phillips Screwdriver Flat Bladed Screwdriver.
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(step one cont.) B) Check the LVD FET (if controller is equipped with LVD) by measuring a diode drop between the Battery (+) and Load (+) terminals. If no diode drop is present or if an open circuit is measured, the LVD FET is damaged. If there is a short circuit between the terminals, the unit will still (most likely) regulate the battery voltage, however the controller will no longer have LVD capability.
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Step 4: Power Suppy Connected to Solar Terminals and Battery Connected to Controller. A) Adjust the Power supply voltage to 14.0V(28V for 24V config) and limit the power supply current to about 2A. The green “Charging” LED should be lit. Battery + Load - + - B) The voltage across the Solar terminals should be equal to the voltage across the Battery terminals if the battery is not fully charged. + + - Regulated Power Supply C) Disconnect the power supply.