Failure diagnosis method of the roller conveyor, roller conveyor system, as well as the controller for the conveyor system

摘要

A fault diagnosis method for a roller conveyor including rollers, brushless motors, and zone controllers for controlling the brushless motors, the brushless motors and/or the rollers each having a rotation detector, the zone controllers each having a driver containing a logic circuit, a memory, which contains a program, and a micro computer is proposed. The program includes a fault diagnosis program and a criterial parameter. The zone controllers each obtain an operating parameter of the brushless motors and/or the rollers so as to perform comparison of the operating parameter with the criterial parameter and determine a failure of the roller conveyor in a case where a result of the comparison is above a predetermined level.