Abrégé

A control device adapted to be connected to a conveyor system having a drive motor, a motor control unit which provides a motor control signal to the drive motor and a motor speed sensor adapted to output a motor speed signal to the motor control unit. The control device comprises: a motor speed alteration unit adapted to intercept the motor control signal and to provide a modified motor control signal to the drive motor so as to cause the motor speed to increase or decrease by a speed change value from a first motor operating speed to a target motor operating speed;and a feedback unit adapted to intercept the motor speed signal and to provide a scaled motor speed signal to the motor control unit based on the intercepted motor speed signal, the scaled motor speed signal indicating to the motor control unit that the motor speed has not been increased or decreased from the first motor operating speed by the speed change value.

Classes IPC  ?

• B66B 25/00 - Commande des escaliers ou des trottoirs roulants
• B66B 23/06 - Mécanismes d'entraînement pour mains courantes avec moyens de synchronisation du mouvement des marches ou des tapis transporteurs et des mains courantes
• B66B 21/02 - Escaliers roulants
• B66B 23/02 - Mécanismes d'entraînement
• B66B 21/12 - Trottoirs roulants du type à vitesse variable

Abrégé

A safety system for a moving walkway having a continuous loop of steps driven by a drive system and missing step detector adapted to detect a missing step from the loop of steps. The safety system comprises: an interrupt unit (100) adapted to control the drive system to disable automatic movement of the loop of steps upon detection of a predetermined event and adapted to subsequently control the drive system to enable automatic movement of the loop of steps only after a safety procedure has been completed without a missing step being detected by the missing step detector. The safety procedure comprises causing a step to traverse an entire loop under manual control of the drive system.

Classes IPC  ?

• B66B 29/00 - Dispositifs de sécurité des escaliers ou des trottoirs roulants

Abrégé

A safety system for a moving walkway having a continuous loop of steps driven by a drive system and missing step detector adapted to detect a missing step from the loop of steps. The safety system comprises: an interrupt unit (100) adapted to control the drive system to disable automatic movement of the loop of steps upon detection of a predetermined event and adapted to subsequently control the drive system to enable automatic movement of the loop of steps only after a safety procedure has been completed without a missing step being detected by the missing step detector. The safety procedure comprises causing a step to traverse an entire loop under manual control of the drive system.

Classes IPC  ?

• B66B 29/00 - Dispositifs de sécurité des escaliers ou des trottoirs roulants