Apparatus and method for controlling an escalator system or an automated walkway system

An escalator system or a moving walkway system, comprising:

• a conveying mechanism;
• a three-phase motor for driving the conveying mechanism, adapted to operate in a variable frequency mode, a first operating frequency mode and a second operating frequency mode, windings of the three-phase motor are wired in a star wiring method and in a triangular wiring method in the first and second operating frequency modes, respectively;
• a control device configured to:
• determine a load value of the escalator system or the moving walkway system;
• and
• determine a current operating mode of the three-phase motor in the escalator system or the moving walkway system in the following manner:
• if the load value is below a first threshold, determining the variable frequency mode as the current operating mode, if the load value is between the first threshold and a second threshold, determining the first operating frequency mode as the current operating mode, and if the load value exceeds the second threshold, determining the second operating frequency mode as the current operating mode,
• wherein the second threshold is greater than the first threshold.

A method for controlling an escalator system or a moving walkway system, comprising:

• determining a load value of the escalator system or the moving walkway system;
• and
• determining a current operating mode of a three-phase motor in the escalator system or the moving walkway system in the following manner:
• if the load value is below a first threshold, determining a variable frequency mode as the current operating mode, if the load value is between the first threshold and a second threshold, determining a first operating frequency mode as the current operating mode, and if the load value exceeds the second threshold, determining a second operating frequency mode as the current operating mode,
• wherein the second threshold is greater than the first threshold,
• wherein windings of the three-phase motor are wired in a star wiring method and in a triangular wiring method in the first and second operating frequency modes, respectively.

A non-transitory computer-readable storage medium having instructions stored in the computer-readable storage medium, when the instructions are executed by a processor, the processor is caused to execute operations comprising:

• determining a load value of the escalator system or the moving walkway system;
• and
• determining a current operating mode of a three-phase motor in the escalator system or the moving walkway system in the following manner:
• if the load value is below a first threshold, determining a variable frequency mode as the current operating mode, if the load value is between the first threshold and a second threshold, determining a first operating frequency mode as the current operating mode, and if the load value exceeds the second threshold, determining a second operating frequency mode as the current operating mode,
• wherein the second threshold is greater than the first threshold,
• wherein windings of the three-phase motor are wired in a star wiring method and in a triangular wiring method in the first and second operating frequency modes, respectively.