TSAL

General Requirements

The TSAL must not perform any other functions.

EV4.10.4 The mentioned voltage detection must be performed inside the respective TS enclosure.

EV4.10.5 The mentioned states of the relays (opened/closed) are the actual mechanical states. The mechanical state can differ from the intentional state, i.e. if a relay is stuck. Any circuitry detecting the mechanical state must meet EV5.6.2.

EV4.10.6 The voltage detection circuit of the red light and the relay state and voltage detection circuit of the green light must be independent. Any plausibility check between both lights is not allowed. A TSAL state with both lights simultaneously active might occur and must not be prevented.

EV4.10.9 The TSAL and all needed circuitry must be hard-wired electronics. Software control is not permitted.

EV4.10.10 A green indicator light in the cockpit that is easily visible even in bright sunlight and clearly marked with “TS off” must light up if TSAL green light is on, (see EV4.10.3).

Last year 2022

Last Year's TSAL design was assembled of four main PCB's:

TSAL Vehicle: Contains an analogic circuit that receive as input the voltage across the vehicle's side of the AIR's (HV+ and HV-) and outputs a signal of HIGH (12v) if the HV is lower than 60V DC and a LOW signal when HV 60V or above (60V indicator). The output signals goes to the "TSAL Main" PCB.

TSAL Accumulator: The circuit detects the AIR's and Pre-charge relay mechanical status (detected by voltage measurement) and also has a 60V indicator as same as in the "TSAL Vehicle" circuit. The TSAL Accumulator's output are the 60V indicator (HIGH if HV is lower than 60V and LOW if HV is higher than 60V) and AIR's Pre-charge relay feedback (analog voltage output of the relays mechanical status)

TSAL Main: receive as inputs the signals from the "TSAL Main" and "TSAL Accumulator" and contains logic for activating the red and green LED's according to the vehicle status as defined by the rulebook. The circuit also has an output towards the " TSAL Cockpit" PCB to light the cockpit light when the green light is on.

TSAL Cockpit: the circuit receive a signal from the "TSAL Main" to light the cockpit green LED when the TSAL green light is activated.

** All circuit receive 12V input and GND port.

All 2022's TSAL schematics are presented and elaborated in our drive:

https://drive.google.com/drive/folders/1uNNjTSDxP_JdO-cYAzpASaPQKfhoxpze

SRR

Definitions/Meaning

The vehicles must include a single TSAL (Tractive System Active Light) that must indicate the TS status.

EV4.10.2 The TSAL itself must have a red light, flashing continuously with a frequency between 2 Hz and 5 Hz and a duty cycle of 50%, active if and only if the LVS is active and the voltage across any DC-link capacitor exceeds:

• 60VDC or 50VACRMS

• Half the nominal TS voltage

whichever is lower.

EV4.10.3 The TSAL itself must have a green light, continuously on, active if and only if the LVS is active and ALL of the following conditions are true:

• All AIRs are opened.

• The pre-charge relay, see EV5.7.2, is opened.

• The voltage at the vehicle side of the AIRs inside the TSAC does not exceed 60VDC or 50VACRMS.

PDR

CDR

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