{
  "$type": "site.standard.document",
  "description": "A turning drive device includes a turning motor (21) that is driven by an electric power from an electrical energy storage system (120) and is configured to drive a turning body (3), an inverter (20) that controls a drive operation of the turning motor, a controller (30) that is connected to the…",
  "path": "/patents/973720",
  "publishedAt": "2014-06-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "E02F9/121",
    "SUMITOMO SHI CONSTR MACH CO [JP]"
  ],
  "textContent": "A turning drive device includes a turning motor (21) that is driven by an electric power from an electrical energy storage system (120) and is configured to drive a turning body (3), an inverter (20) that controls a drive operation of the turning motor, a controller (30) that is connected to the inverter via a control signal line, and an emergency operation part that supplies a command to the inverter (20) when an abnormality occurs in a control operation of the turning motor. The inverter (20) blocks the control signal line based on a signal from the emergency operation part and controls the drive operation of the turning motor (21).",
  "title": "SLEW DRIVE DEVICE"
}