Safety circuit for battery-operated drive motor

摘要

The plug connection has at least one further connection (3) in addition to the connections (2, 4). The key switch is designed as a connecting lock which can be coupled with the plug connection. In the coupled condition of the motor (M), it is connected to the battery (B) pref. across a relay. The motor (M) is connected to the charging connections (2,4) across a relay working contact (r). The further connection (3) is connected with a relay, which can be switched by the plugging of the connecting lock to the battery voltage.