INTRODUCTION
The Auto Charge 1000 with Parasitic Load Compensation (PLC) is a compact, microprocessor controlled, com-
pletely automatic, single channel battery charger designed for vehicles with a single battery system. The PLC
charger is designed to withstand the shock and vibration encountered by vehicle mounted equipment.
FEATURES
I. AUTO CHARGE 1000 PLC BATTERY CHARGER
• Electronic remote sensing of true battery voltage, eliminates the need for sensing wires
• Automatic current limiting
• Built-in Battery Saver output
• Accommodates Lead-Acid, Gelled Electrolyte, AGM and Odyssey® battery types
•
Configurable for 3-Step or Float Charging
• Selectable 1, 5 or 10 hour Safety Timer while in 3-Step mode
• Adjustable Parasitic Load Compensation (0-12 amperes)
•
Power “ON” LED indicator
• System Status indicator
• Whisper quiet cooling fan
II. CHARGE CONTROLS & ELECTRONIC REMOTE SENSING
The Auto Charge 1000 PLC contains a precision voltage controller to maintain the battery’s charge. Automatic
electronic remote sensing measures the true battery voltage, eliminating the need for the additional sense
wires. The output current of any charger is inherently a series of pulses whose frequency is determined by
the power line frequency. Therefore there are brief intervals during which no charging current flows. During
this brief interval, the Auto Charge 1000 PLC measures and stores the battery voltage. This battery voltage
is compared to a standard and any error is detected and used to control the charger output at the desired
level. There is no “trickle charge”, therefore, no danger of overcharging and water boil-off.
III. AUTOMATIC CURRENT LIMITING
Some battery chargers can be overloaded due to the high charging current required when batteries are
severely discharged. The Auto Charge 1000 PLC contains an automatic current limiting circuit. This circuit
limits the output current to the rated 15 amperes (18 A with battery saver turned off) when charging a deeply
discharged battery or if the starter cranks the engine while charging. The current limiter thus eliminates the
need for an ignition interlock circuit.
IV. PLC - PARASITIC LOAD COMPENSATION
This new feature is designed especially to meet the heavy duty requirements of emergency vehicles. Most
emergency vehicles have many parasitic loads on their systems (flash lights, gas detectors, computers,
monitoring systems and other items) that can trick a standard 3-step charger into over charging the batteries.
Parasitic load compensation allows you to input the total number of parasitic load amps on the vehicle. The
charger will then shift the absorption stage set-point so the battery voltage will drop to the float voltage when
the desired current is reached. In short the parasitic loads are invisible to the charger. This will lead to a longer
battery life and no overcharging or overheating.
170 Cherry Avenue
West Sayville, NY 11796
www.kussmaul.com
Ph: 800-346-0857
Fax: 631-567-5826
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