MDA Technologies 4/2015

must be able to rely 100 % on the safety of stage drives during a
performance; any failures would have obvious fatal consequences.
This is where the “Roba-stop-silenzio” stage brakes come into play.
In the winch drives, these brakes with reliable contactless release
monitoring by “Mayr power transmission”, take care of the safety
concerns.
Safety for people and equipment
The function of safety brakes is two-fold. First and foremost they
must be able to save lives in emergencies, secondly they provide
safety to equipment from any unpermitted operating conditions.
During power failure or emergency stop, the brakes bring the loads
to a standstill as quickly as possible and thus reliably avoid injury to
people or damage to property. This brake system is also equipped
with two brake circuits, working independently of each other to
ensure maximum operating safety. The brakes in construction size
16 have a braking torque of “two times 19 Nm”. Another important
feature of this system is the inductive proximity sensor for function
monitoring. This contactless release monitoring system prevents
unpermitted operating conditions, such as the motor starting up
against closed brakes. In addition, the contactless system is reliable,
resistant to magnetic field and it undergoes no “wear and tear”.
High-performance, all-round talents
Just like the artists on stage, the dynamic-lift rope winches are also
multi-talented in event technology due to their flexible rope leadoffs,
optional carrying and transportation aids and the fact that they
can be installed in any position. In spite of their lightweight and
compact construction, they fulfil the strict legal specifications for
high levels of safety and resistance strengths for lifting devices
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