Patent ID: 11904705
Assignee: TGW MECHANICS GMBH
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method for operating a storage and retrieval unit movable on a rail line in an automated rack storage system having at least one storage rack disposed along the rail line, the method comprising:
supplying the storage and retrieval unit with electric energy via a power supply electrically connected to at least one of the rail line and a power-supply rail;
using the storage and retrieval unit to store piece goods into storage in the storage rack or to retrieve piece goods from the storage rack;
setting in a normal operation at least one of the rail line and the power-supply rail to a normal-operation voltage when no risk posed by the storage and retrieval unit is detected;
setting in a risk situation at least one of the rail line and the power-supply rail to a risk-operation voltage below the normal-operation voltage and sufficiently high to move the storage and retrieval unit when a risk posed by the storage and retrieval unit is detected;
measuring a level of a voltage applied to at least one of the rail line and the power-supply rail in the storage and retrieval unit; and
disconnecting, in the storage and retrieval unit, a current path between at least one of the rail line and the power-supply rail and a drive motor of the storage and retrieval unit when the voltage measured falls below a threshold value associated with the risk situation.