3.3 Unintended Car Movement Protection (UCMP)
Background
The elevator car landing at a certain floor may move unexpectedly, with floor door unlocked and car door
open, if the motor or any component of the drive control system fails. A device is required to prevent or stop
the movement, guaranteeing safety.
To prevent failure of the motor brake that guarantees safe running, periodically detect whether the braking
force of the brake meets the requirements and detect the braking force of the control system.
Description
● UCMP detection
● Braking force detection
A door pre-open module MCTC-SCB-A/A1/C/D is required for the UCMP function.