Electrical Characteristics; Fault Diagnosis - Segway VILLIAN SSV Series Service Manual

ELECTRICAL SYSTEM

Electrical characteristics

Working voltage:
◆ Rated voltage: 13.5V
◆ Full-function working voltage range: 9 V ～16 V
◆ Function limited voltage range: 6 V～9 V, 16 V～18 V
◆ Guaranteed diagnostic function voltage range: 8 V～16 V
Working current:
◆ Working current: <10A@13.5V
◆ Quiescent current: <1mA@13.5V
Electrical protection:
◆ Overvoltage protection: ECU can withstand 24V overvoltage for 60 seconds (ambient temperature
is 23℃±5℃). If the system returns to normal operating voltage within 60 seconds, ECU can still
ensure normal operation.
◆ System reverse voltage protection: If UBR (Pin15, 16) is powered by the main relay, the ECU can
withstand a reverse voltage of 14.0 V for 60 seconds (ambient temperature is 23℃ ±5℃, other
connections are correct),if the system recovers to normal operating voltage within 60 seconds, the
ECU can still ensure normal operation.
◆ Output level protection: The controller driver level has diagnostic protection functions, such as
short-circuit to ground, short-circuit to power supply, and open circuit.

Fault diagnosis

The ECU can call out the fault information record in the ECU, or manually input some instructions such
as clearing the fault information record, self-learning, etc.when the ECU has a fault, the engine will
generally fail to start, the actuator does not work, etc. The ECU fault check mainly checks whether the
connectors are well connected and whether the pins are bent or deformed.
14 - 50