IndustrialDriveDataDrive Board & Diagnostic Database
Motor protection / sensor input

Siemens 6SE70 Motor Thermal Sensor Path

Routes KTY84 and PTC motor-temperature evidence through terminal input, expansion-board context and configured warning/fault response.

Functional path

Motor sensor
Motor terminal box
Shielded sensor cable
Terminal / expansion board
CUVC measurement logic
Warning or fault response

Diagnostic signals and checkpoints

Motor overtemperature warningMotor thermal tripCold-start temperature faultIntermittent sensor indication

Technician notes

  • Differentiate true motor overheating from open/short sensor wiring.
  • Check motor fan, cooling-air path and bearing condition when the warning follows load or ambient heating.
  • Do not bypass the sensor to force operation.