User manual KUSSMAUL 091-134

[. . . ] Connect wiring from the battery to the output terminal strip. Verify that the battery voltage appears at the charger output terminals (See Figure 2). PRINCIPLES OF OPERATION A three-step lead acid battery charger operates in the three stages described below: 1) A discharged battery is recharged at a constant current (bulk charge) until its voltage reaches an overcharge level of 2. 48 volts per cell. At this time the charger will switch to Finish Charge. [. . . ] The battery accepts 75-85% of its capacity during bulk charge. 2) This overcharge voltage is now maintained constant at 2. 48 volts per cell (absorption or finish charge) until the charge current tapers down to {battery capacity/35} amperes. For the 12 volt, 80 ampere charger this current is 11. 9 amperes. The battery accepts 15-25% of it capacity during absorption charge. 3) Once the charge current reaches the tapered down value (see above), the voltage is set to a float voltage of 2. 24 volts per cell, and maintained at float charge. The battery is maintained at full charge during float charge, and the green indicator labeled "Battery Charged" is illuminated. Figure 1 depicts the above described operation. Note that the term "absorption charge" is used interchangeably with "finish charge". UV RELAY: Refer to Figure 2 Energized [COM makes NO] when battery terminal voltage is ABOVE Under Voltage SetPoint plus signal hysteresis. De-energized [COM makes NC] when battery terminal voltage is EQUAL to or BELOW Under Voltage Set-Point. THREE STAGE CHARGING CURVE ABSORPTION STAGE BATTERY CURRENT FLOAT STAGE BATTERY VOLTAGE Voltage Increasing Current Constant STAGE I CONSTANT CURRENT (BULK) Voltage Constant Current Decreasing STAGE II CONSTANT VOLTAGE (ABSORPTION) Voltage Constant Full Charge Maintained STAGE III CONSTANT VOLTAGE (FLOAT) TIME Figure 1 NOTE: This charger is designed to have it's output voltage compensated for changes in Temperature. A switch on the circuit board selects whether the unit is operated in the compensated or uncompensated mode. WHEN IN THE TEMPERATURE COMPENSATED MODE THE THERMISTOR MUST BE CONNECTED. Operation without the thermistor while in the compensated mode will result in loss of voltage control and overcharging of the battery. UV RELAY Customer Interface (Optional) COM Green NC Black NO White OUTPUT CURRENT HIGH/LOW SWITCH (OPTIONAL) A. C. POWER BATTERY + THERMISTOR (OPTIONAL) Figure 2 INSTALLATION WIRING Specifications Input Power:& Fuse: See Chart Output Power: See Chart Charge Indicator: See Chart Mode Indicators: Battery Fault, Time-out, Bulk Charge, Finish Charge, and Battery Charged Recommended Battery Size: See Chart Weight: 65 pounds Temperature Compensation: Add suffix "TC" to Model Number shown in Table below Output Current Select: Add suffix "HL" to Model Number for selectable output current levels. Under Voltage: Add suffix "UV" to Model Number for Under Voltage signaling option. Fifty (50) Hz Operation: 230VAC input power operation only. [. . . ] Under Voltage: Add suffix "UV" to Model Number for Under Voltage signaling option. Fifty (50) Hz Operation: 230VAC input power operation only. Add "/50" as suffix to 230 in Model Number for 50Hz operation. [. . . ]