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SUPERCHARGER SAFETY MECHANISMS T _ rS L n <br /> Latch pal <br /> NA(Tesla connector) EU (IEC Type 2) <br /> Tesla vehicles also have an internal interlock to prevent driving or putting the vehicle in neutral, rendering the vehicle <br /> immovable while charging. This interlock is triggered by sensing the latch status of the vehicle connector. <br /> Proximity Connection <br /> A proximity signal wire originating in the Supercharger Cabinet extends through the Charge Post and through the EV <br /> connector to the vehicle. When the EV connector is inserted into a Tesla vehicle and after the charge port locks, the <br /> vehicle will power the proximity line and the Cabinet will detect a proximity line voltage in the acceptable range. Voltage <br /> on the proximity line is continuously monitored throughout the charge session. The proximity circuit will open (drop to OV) <br /> if one of several protection mechanisms detects a potentially safety-critical issue. When the proximity line opens, charging <br /> operation is halted within 100 milliseconds by opening the fast-acting DC contactors in the Supercharger Cabinet. <br /> 1-7 <br /> eo 0 <br /> I <br /> I <br /> I <br /> Proximity line <br /> (continuous from cabinet <br /> through post to vehicle) <br /> Analog and Digital Handshake before Energization <br /> A handshake process between the Supercharger system and a Tesla vehicle occurs after the proximity connection is <br /> established and before the charge session is initiated. There is no DC power delivery to the vehicle until after the <br /> handshake process completes successfully. The process is comprised of an analog handshake to indicate vehicle <br /> presence, followed by a digital handshake that communicates vehicle VIN, vehicle status, and other signals that control <br /> charging. If either the Supercharger system or the vehicle has a problem, the handshake will not proceed and a fault will <br /> be displayed in the vehicle UI. <br /> After the initialization process is complete and while the vehicle is charging, communication continues between the vehicle <br /> and the Supercharger system to monitor and control the charging process. At any point, if either the Supercharger system <br /> Rev. 1.0, September 2018 CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY Page 6 of 8 <br />