Leroy-Somer E27 Series, Installation & Maintenance

Page: 95 / 112

Installation and Operational Instructions for ROBA
®
-twinstop
®
Type 8012._ _ _ _ _ Sizes 150 to 350
(B.8012.GB)
05/07/2010 TK/HW/SU Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
D-87665 Mauerstetten http://www.mayr.de
Page 2 of 15 Germany eMail: info@mayr.de
Safety Regulations
These Safety Regulations are user hints only and may not be complete!
Danger!
Danger of death! Do not touch voltage-
carrying cables and components.
To prevent injury or damage, only professionals and
specialists should work on the devices.
Danger!
This warning applies if:

the electromagnetic brake is used incorrectly.

the electromagnetic brake is modified.

the relevant standards for safety and / or installation
conditions are ignored.
Please Observe!
Before product installation and initial
operation, please read the Installation and
Operational Instructions carefully and
observe the Safety Regulations. Incorrect operation can
cause injury or damage. The electromagnetic brakes have
been developed in accordance with the latest technology
regulations and are, at the point of delivery, operationally
safe.
Please Observe!

Only specialists who are trained in the transport,
installation, operation, maintenance and general operation
of these devices and who are aware of the relevant
standards should be allowed to carry out this work.

Technical data and specifications (Type tags and
documentation) must be followed.

The correct connection voltage must be connected
according to the Type tag.

Never loosen electrical connections or carry out
installations, maintenance or repairs while the voltage
connection is energised!

Cable connections must not be placed under mechanical
strain.

Check electrical components for signs of damage before
putting them into operation. Never bring them into contact
with water or other fluids.

The braking torque is lost if the friction lining and / or the
friction surface come into contact with oil or grease.
Please Observe!
Please ensure that the brake is clean and
oil-free, as both brake circuits have an
effect on the same linings. Special sealing
measures, among other precautions, may be necessary - in
particular in gear applications!
Appointed Use
This safety brake is intended for use in electrically operated
elevators and goods elevators according to EC 81-1/1998.
The safety brake corresponds to DIN EN 81, Part 1 [Sections
12.4.2.1 (2nd Paragraph), 12.4.2.2, and 12.4.2.5] in its general
design and its mode of operation.
The effectiveness of the mechanical dual circuit system can be
tested at the place of operation (requirement acc. TRA 102).
Guidelines for Electromagnetic Compatibility
(EMC)
In accordance with the EMC directives 2004/108/EC, the
individual components produce no emissions. However,
functional components e.g. mains-side energisation of the
brakes with rectifiers, phase demodulators, ROBA
®
-switch
devices or similar controls can produce disturbance which lies
above the allowed limit values.
For this reason it is important to read the Installation and
Operational Instructions very carefully and to keep to the EMC
directives.
Device Conditions
Please Observe!
When dimensioning the brakes, please
remember that installation situations,
braking torque fluctuations, permitted
friction work, run-in behaviour and wear as well as general
ambient conditions can all affect the given values. These
factors should therefore be carefully assessed, and
alignments made accordingly.
Please Observe!

Mounting dimensions and connecting dimensions must be
adjusted according to the size of the brake at the place of
installation.

Use of the brake in extreme environmental conditions or
outdoors, directly exposed to the weather, is not permitted.

The magnetic coils are designed for 100 % duty cycle.
However, a switch-on duration of > 60 % duty cycle results
in increased temperatures, which cause premature aging
on the noise damping system, and therefore to an increase
in switching noises.
The max. permitted switching frequency is 240 1/h. If the
brakes are overexcited, a switching frequency of 180 1/h
must not be exceeded.
These values apply for intermittent duty S3 60%.
The permitted surface temperature on the brake flange
must not exceed 80 °C and a max. ambient temperatur e
of 45 °C.
The duration of overexcitation should be approx. 1 second.

The brakes are only designed for dry running.
The torque is lost if the friction surfaces come into contact
with oil, grease, water or similar substances.

The braking torque is dependent on the present run-in
condition of the brakes.

Manufacturer-side corrosion protection of the metal surface
is provided. The surface is rough sawn and not machined
(milled material).
Protection Class I
This protection can only be guaranteed if the basic insulation is
intact and if all conductive parts are connected to the PE
conductor of the permanent installation. Should the basic
insulation fail, the contact voltage cannot remain (VDE 0580).
Ambient Temperature 0 °C up to +45 °C
Danger!
At temperatures of around or under freezing point, condensation
can strongly reduce the torque, or the rotors can freeze up. The
user is responsible for taking appropriate counter measures.