HMI accessory LED indicators

HMI140HMI145HMI150

1. Ready & Waiting States

Situation	HMI LED pattern	Speed	Charging connector light ring	Buzzer
Idle	Green solid	Steady	Green	None
Vehicle detected	Green blinking	Slow	Green	None
Reserved	Yellow solid	Steady	Yellow	None
Reserved + Vehicle detected	Yellow blinking	Slow	Yellow	None
Waiting external signal	Yellow solid	Steady	Blue	None
Authorized no vehicle	Blue blinking	Fast	Green	None

2. Authentication & Interaction

Situation	HMI LED pattern	Speed	Charging connector light ring	Buzzer
RFID reading	White progress animation	Animated	None	None
RFID present	None	–	None	Short beep (1x)
Authenticating	White blinking	Slow	Green	None
Auth failed	White flicker odd/even	Flicker	Green	Short beep (3x)

3. Charging States

Situation	HMI LED pattern	Speed	Charging connector light ring	Buzzer
Charging	Blue breathing	Smooth	Blue	None
EV suspended	Blue blinking	Very slow	Blue	None

4. Maintenance & Configuration Feedback

Situation	HMI LED pattern	Speed	Charging connector light ring	Buzzer
TAG added OK	Blue solid	Steady	None	Long beep (1x)
TAG added failure	None	–	None	Short beep (3x)
Contactor first closed	None	–	None	Long beep (1x)

5. Fault & Unavailable States

Situation	HMI LED pattern	Speed	Charging connector light ring	Buzzer
Unavailable	Red solid	Steady	Red	None
Continuous error	Red blinking	Slow	Red	None
Error	Red blinking fast	Fast	Red	None

6. Notes

• Green indicates ready or idle conditions.
• Blue indicates authorized or active charging states.
• Yellow indicates waiting or reservation-related conditions.
• Red indicates fault or unavailable conditions.
• Buzzer signals are used only for confirmations or failures.
• If red is shown (steady or blinking), charging is not possible and operator or service intervention may be required.