Checking The Component Parts - Lenze m500-P Series Operating Instructions Manual

8 Maintenance/repair
Maintenance operations

Checking the component parts

Component Effect
Friction lining Wear on the friction lining Applied friction energy
Armature plate and Running−in of armature
flange plate and flange
Teeth of the brake Teeth wear (primarily at
rotor the rotor end)
Armature plate Armature plate, cap screws
bracket and bolts are deflected
Springs Fatigue failure of the
springs
Tab. 2 Causes for wear
8.3.3 Checking the component parts
With a mounted brake ¯ Check ventilation function and activation/deactivation
¯ Check air gap (if required, re−adjust it)
¯ Measure rotor thickness (if required, replace rotor)
¯ Thermal damage of the armature plate or flange
With a dismounted brake ¯ Check clearance of the rotor gear teeth (replace rotors that
¯ Damage by vibration of the torque support at the sleeve
¯ Check springs for damage
¯ Check armature plate and flange or end shield
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Influencing factors
Number of start−stop
cycles
Applied friction energy
Number of start−stop
cycles,
Level of the braking
torque,
Dynamics of the
application,
Speed fins in operation
Number of start−stop
cycles,
Level of braking torque
Number of switching
operations of the brake
(tarnished in dark blue)
are damaged by vibration)
bolts, cylindrical pins, and armature plate
– Evenness for size 06...12 < 0.06 mm
– Evenness from size 14 < 0.1 mm
– Max. run−in depth = rated air gap of the design size
Cause
Braking during operation
(impermissible, holding
brakes!)
Emergency stops
Overlapping wear when
the drive starts and stops
Active braking by the drive
motor with the help of the
brake (quick stop)
Starting wear if motor is
mounted in a position
with the shaft vertical,
even if the brake is open
Friction between the brake
lining and the armature
plate or flange e.g. during
emergency braking or
service brake operation
Relative movement and
impacts between brake
rotor and brake hub
Load changes and impacts
due to reversal error
during interaction
between armature plate,
cap screws and guide bolts
Axial load cycle and
shearing stress on the
springs due to radial
reversing error of the
armature plate
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Lenze ¯ BA 33.0008 ¯ 5.0