New lift FST-2XT Manuel De Montage page 137

1.2 Description of the function against unintended car movement
For the device as a detecting and, if necessary, triggering element: if combined with a
braking element tested in accordance with A3, e.g., in the form
a) of a drive brake for electrically operated rope lifts,
b) of a safety valve or similar for hydraulically driven lifts, this can represent the detecting
as well as the triggering element of the entire protective device against the unintended
movement of the car. If, on the other hand, the device is combined with a braking ele-
ment tested in accordance with A3, e.g., in the form
c) of a double-acting safety gear/braking device triggered by a speed limiter tested in ac-
cordance with A3 as a triggering element
well as with hydraulically driven lifts
the entire protective device against the unintended movement of the car.
1.2.1 Electrically operated passenger and freight lifts
The safety circuit bypass control is only activated by the control system if firstly the target
The safety circuit bypass control, when triggered, i.e.,
if the door zone (defined by two magnet switches) is exited as well as
and/or open car door,
ensures a safe shutdown of the downstream drive components and, subsequently,
either the triggering of the braking element according to cases (a.) and (b.) in the
comment of the previous section
or the activation of the triggering element of the protective device against the unin-
tended car movement in cases of the combination specified in (c). of the previous
section.
The car speed is detected by the control system via the encoder of the shaft positioning
system. For additional safety (redundancy), a speed-dependent contact of the frequency
inverter is integrated at the terminals of the control system
thereby ensured that the safety circuit bypass control is also inactive (safety circuit open)
if the frequency inverter detects a car speed of more than 0.2 m/s.
1.2.2 Hydraulically operated passenger and freight lifts
In principle, the function is identical to that of electrically operated passenger and freight
lifts (electrically operated rope lifts), but without monitoring of the car speed.
Manuel de montage et de mise en service FST-2XT FST-2XTs
Annex to the EU Type Examination Certificate
No. EU-ESD 023 of 2016-10-04
for both electrically operated rope lifts as
this can only represent the detecting element of
A1:X13.7 and A1:X13.14. It is
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