Features - Alba PT-450 User Manual

SAFETY DEVICE.PARACHUTE FPC-500
Rack and pinion transport platform PT-450

4.2. Features

A parachute works by blocking the drop in the case of there is a speed rising over the nominal value. The
overspeed detection system is based on the principle of action of the centrifugal force to engage driven
pinion into the elevator structure. Its main components are as follows:
· Cover:
The parachute has a waterproof housing that allows confining the security unit, preventing it from dust
and corrosive atmosphere inside. It must also prevent unauthorized adjustment, so that should not be
screws handling by unauthorized persons.
· Buffer:
The parachute has a progressive braking system so that locking is produced in a buffered way, so that
after a controlled braking, the cage is stopped, according to deceleration specifications of reference
standards to avoid accidents resulting from major efforts generated by moving mass inertia.
· Locking:
The device features a brake consisting of four sectors, which are charged up to torque referred to the
elevator, so that deceleration is controlled accurately, even in case of free drop of the machine, according
to the specifications of harmonized standards reference.
· Integrated microswitch:
The parachute includes a microswitch that is activated in case of brake locking, allowing the signal to cut
the movement of hoist and preventing further operations of the machine, until the action of a person
designated to release the hoist.
SAFETY SWITCH AND INTERNAL CONNECTION
Pag. 46 Rev.1.0