OPERATION
Page
58
Copyright Trace Engineering Company, Inc.
5916 - 195th Street N.E.
Arlington, WA 98223
Telephone: 360/435-8826
Fax: 360/435-2229
www.traceengineering.com
PS Series Inverter/Charger
Part No. 3597
Rev. D: November 23, 1999
OPERATING MODES
The PS Series Inverter/Charger can be used in a wide variety and combination of operating modes:
NOTE: ALL ADJUSTMENTS AND SETTINGS REQUIRE THE SWRC OR SWCA.
INVERTER MODE - DC to AC inverter with sine wave output, high starting surge, power saving search
mode, low idle current, and very high efficiency DC to AC conversion.
CHARGER MODE - Low AC current distortion, three stage, temperature compensated, high amperage
battery charger.
INVERTER/CHARGER MODE - Automatic transfer from inverter to battery charging upon presence of
utility or generator AC power source.
GENERATOR SUPPORT MODE - Automatic “no glitch” switching from charger mode to inverter mode
allowing the inverter to assist the generator in starting and powering large loads. Adjustable generator
support current and voltage thresholds.
AUTOMATIC GENERATOR START MODE - Automatic generator starting based on the battery voltage
reaching an adjustable voltage setting or the AC loads exceeding an amperage setting. Both start
conditions include adjustable time delays. Once started, the inverter operates in battery charger mode
until battery is charged to the float stage or until the AC load is reduced. The generator is then shut off
and the loads are powered from the battery through the inverter. Automatic generator exercising of the
generator and adjustable quiet time period to reduce generator operation may be programmed in the
setup menu.
UTILITY BACK-UP MODE - Phase synchronized fast AC transfer switching for utility back-up power
supply applications. Includes adjustable AC transfer voltage and line conditioning ability.
UTILITY INTER-ACTIVE MODE - Excess power from charging sources or stored power from the battery
can be “sold” back into a utility grid. Also allows selling of the stored energy in the battery during a
specific time period.
ENERGY MANAGEMENT MODES - Determines how your utility power can be managed.
• Time of Day Metering Mode - Onboard clock to set inverter and charger operating time periods. This
mode can be used with “time of day” metering to shift energy consumption to off-peak periods.
• Peak Load Shaving Mode - Used to limit the draw of AC loads from a utility grid by powering it from
the batteries. The batteries are recharged when the AC loads are reduced. This can “level” the load
on a utility.
• Low Battery Transfer Mode - Automatic transfer of the AC loads from the batteries to the utility
when the system reaches an adjustable low battery voltage setting. Independent settings allow
control of when the AC loads return to battery once it is recharged.
ADDITIONAL FEATURES - Numerous additional features are provided to enhance and customize the
inverter's operation for the various operational modes:
• Three-stage battery charging with fully adjustable charge settings and battery temperature sensing.
• AC and DC voltmeters and AC ammeters to allow monitoring of inverter, generator, and utility grid.
• On-board 24-hour clock for programming of generator quiet time and utility inter-active modes.
• Adjustable sellback current level for utility inter-active mode.
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