O
PERATING
M
ANUAL
3. P
RODUCT
D
ESCRIPTION
ThyssenKrupp Aufzugswerke GmbH
15
Issue 06.2004
The two rotors are rigidly connected to the motor shaft through interlocked
holes and a hub.
Brake release:
the voltage-fed brake magnet coils attract the armature discs
and release the brake rotors.
The brakes cannot be released manually.
The brake torque of each brake circuit permits to stop the car loaded with
rated load at rated speed. The brake torque cannot be adjusted.
Note:
the brakes of DAF270 are designed for use as holding brake. Any
dynamic braking is restricted to emergency and test braking. Normal use will
not lead to any noticeable wear on the lining.
This drive brake can in no way replace the safety braking system used for
downward operation.
Attention:
the manufacturer of the lift installation must provide proper
measures for brake connection to ensure that the brake can be tested and
emergency rescue performed (even in case of power failure).
Brake monitoring:
A separate control switch monitors the momentary brake
position (released/closed) of each brake. Any failure is signaled to the
control. The machine must be shutdown or a further run prevented if the drive
either runs at zero speed with one brake circuit open or starts with one brake
circuit closed.
For terminal diagram see chapter 4.3 and adjusting of brake test switch
chapter 7.3.
An electrical safety device of the overspeed governor or a type-tested safety
device of the same safety level shall initiate the releasing of the brake in case
of overspeed if the braking device of the DAF270 is utilized as
ascending
car overspeed protection means.
The requirements including range of use
and conditions set out in the annex of type test certificate No.
ABV 591
of
01-08-08
must be complied with. See
chapter
8.4.
Real value generator:
DAF270 is a synchronous machine excited by a
permanent magnet. In energized state the absolute rotor position is supplied
by a sine-cosine-wave absolute position encoder. Speed and shaft position
are detected by high-resolution sine-cosine-wave tracks.
For description of encoder and technical data see chapter 3.5 and
manufacturer's instructions in chapter 8.2.
Environmental conditions:
the ambient temperature at the site of
installation shall comply with the requirements for machine rooms and thus
be maintained b5° and +40° C (in accordance with EN 81).
The relative humidity of air shall not exceed 70%
Attention:
in case of temperatures over or under the freezing point, the
braking torque of the disc brake can be reduced due to condensation.
In case of a longer standstill, the friction linings can rust at the friction
surfaces.
Corresponding counter measures are to be made by the owner of the
component.
Summary of Contents for Mini gearless DAF270
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