SureStart™ Compact Low Voltage Disconnect Switch 12V/24V DC 100A at 85˚C 125A at 60˚C 3. Connect LVD “Load+” stud to accessory loads using appropriate heavy gauge cable. 4. Optional circuit connections: 48513 LVD 48513-01 LVD with harness • Connection Schematic Load Load • Master Disconnect Opt. + Battery Battery + Ignition Ignition Switch / Switch Alternator Pin 4 PinPin 1 4 Pin 1 SureStart Compact SureStart Low Compact Low Voltage Voltage Disconnect Disconnect 12V 50mA alarm 50mA (LED and/oralarm buzzer) LED and/or buzzer Pin 3 Pin 3 Pin 2 Pin 2 • • Mom. On Mom. On On On SPDT SPDT On-Off-(On) On-Off-(On) switch, CHswitch, 54104, CH 54104, 55088, 58328-53 or55088, similar58328-53 or similar Pins in Deutsch connector Pins in Deutsch connector Installation Under normal operating conditions this device may run hot. Use caution when handling. We recommend mounting away from direct heat sources, and where there is good air circulation. Note: All connections to pins 1-4 should be made using a 12804 harness connector or a Deutsch DT06-4S connector. 1. Disconnect the battery or power supply or switch it off with the master disconnect switch before installation. All connections to pins should be made with the connector. 2. Connect Pin 1 to ground. Connect Pin 2 “Manual Override” to a center common post of a SPDT {On – Off – Mom. On} switch. Connect the side that is active in the Mom. On position to battery voltage. Attach the side that is active in the stable On to ground. Connect Pin 3 “Alarm” to a audio/visual alarm (voltage rating appropriate for your system) or relay that draws less than 250mA. Connect the other side of the alarm device to Ground Connect Pin 4 “IGN” to the ignition switch (usually to the run position) or alternator output. Unused locations in the connector should be filled with plugs provided. 5. Connect LVD “Battery+” stud to the battery positive terminal (or battery positive terminal block) using appropriate heavy gauge cable and proper fusing. NOTE: If a master disconnect switch is used, the LVD should be installed “after” the master disconnect, such that the master disconnect switch can be used to shut off power to the LVD. 6. Reconnect the battery or power supply. Normal Operation Summary • When the unit is powered up it goes into auto-detect mode, determines if it is in a 12V or 24V system, and sets the parameters for operation. • When the voltage is above 13.0V/26.0V for 10 seconds, the LVD will automatically connect the loads to the battery. • When the voltage drops below 12.1/24.2V for 60 seconds, the Alarm will signal, warning the user that the loads are about to be disconnected. CONTINUED • The user has the option to override the imminent General Specifications disconnect by applying battery voltage to the Manual Environmental: -40˚C to 85˚C. SAE J1455 & J1113 pin. Electronics sealed to IP67 • After 60 seconds of the alarm, the loads and the alarm will be disconnected. • The alarm can be audio, visual or both. • Connecting the manual pin to ground will force the unit to stay shut down as long as that pin is connected to ground • The 48513 also has a factory setup timer disconnect feature which monitors the voltage and the ignition switch. The timer begins when the voltage falls below the connect voltage, yet is above the disconnect voltage, and when the ignition pin goes from battery voltage to off. If the ignition stays off and the battery voltage stays below connect voltage for 15 minutes, the LVD will shut off the loads. This feature is disabled if the ignition pin is not connected. Additional Operating Details Under/Over Voltage - After the LVD initializes, if the voltage falls below the low cut off value (7V/16V) or above the overvoltage cut off value (18V/36V) the unit will disconnect the loads until the voltage returns to the acceptable range. If the device is out of voltage range the Manual feature is disabled . Connection Check – Upon power-up, the LVD initially checks to ensure proper cabling, specifically the Battery+ and Load+ connections. If improper cabling is detected, the LVD will activate the alarm until the user corrects the cabling. Manual Override - When the user uses a switch to connect the Manual pin (Pin 2) to battery voltage for 1 second, it forces the unit to stay connected for 15 minutes, and then it returns to automatic mode (Alarm snooze). Overcurrent Shutoff - When the output current exceeds the preset threshold of ~135A for 3 seconds, the loads are disconnected and the alarm is activated. A reset can be accomplished by connecting the manual pin to battery voltage (manual override). If a switch is not used, similar to a Type II circuit breaker, power must physically be removed from the unit (at the Battery, at the 48513 battery terminal or by master disconnect switch) to reset the unit and begin operating. Ignition-proof to ISO 8846 100A at 85˚C 125A at 60˚C Operating Voltage 9-32V 1mA max quiescent current Disconnect: 12V - Less than 12.1V for 2 minutes 24V - Less than 24.2V for 2 minutes. Factory programmable. Accuracy ±100mV Connect 12V - More than 13.0V for 10 seconds 24V - More than 26.0V for 10 seconds Factory programmable. Accuracy ±100mV Alarm: Active low, 50mA Activates 1 minute before disconnect. Dimensions: Overall height is 3.1” [79mm] See drawing below. Dimensions are in inches [mm] Submit technical questions to: [email protected] Electrical: Pin 4 - Ignition Pin 1 - Ground Pin 4 - Ignition Override Pin 1 - Ground Pin 3 - LED/Alarm (Warning) Pin 3 - LED/Alarm (Warning) Pin 2 - Manual Over Ride CONNECTOR TO ACCEPT DEUTSCH DT06-4S CONNECTOR Pin 2 - Manual Over Ride 4.50 [114] CONNECTOR TO ACCEPT DEUTSCH DT06-4S CONNECTOR 4.00 [102] Ø0.28 [Ø7] 4.50 [114] 4.00 [102] Ø0.28 [Ø7] 4.27 [109] 2.10 [53] Secondary Parts 12804 Compact LVD Harness Assembly (or Deutsch DT06-4S Connector 0462-201-16141 Terminal with W4S Wedge) 58326-06 Rocker Switch 55088 Toggle Switch Please consult the factory if you need further assistance 617. 268. 2100 8am - 4:30pm US Eastern Time 4.27 [109] Battery Terminal Battery Terminal 2.10 [53] HEX NUT, 1/4-20, TYP HEX NUT, 1/4-20, TYP Load Terminal Load Terminal www.colehersee.com IF-162 rev B