Maintenance Intervals For The Brake - Siemens SINAMICS G115D Operating Instructions Manual

Additional information on the SIMOGEAR geared motor
12.2 Specific data motor
maintenance intervals. Here, the most important factors are the work as a result of the
frictional force, the speed at the start of braking and the switching frequency. If several of
the listed causes of wear to the friction lining occur at the same time in a single application,
the influencing factors should be added together for the wear calculation.
Table 12-20
Component
Friction lining
Armature disk and
flange
Braking rotor gear
teeth
Support of the ar‐
mature disk
Springs
12.2.20.2

Maintenance intervals for the brake

For safe and trouble-free operation, check and maintain the spring-operated brake at regular
intervals.
For operational braking, the maintenance intervals depend on the loading on the brake in
the application. Take all causes of wear into account when calculating the maintenance
intervals. Siemens recommends a regular inspection at fixed time intervals for brakes that are
subject to low loads, e.g. holding brakes with an emergency stop.
Failure to maintain the brake can lead to operating faults, production outage or damage
to the plant. Specify a maintenance plan for each application that is appropriate to the
468
Causes of wear to the spring-operated brake
Cause
Operational braking
Emergency stops
Wear caused by overlap
when starting and stopping
the geared motor
Active braking by the motor
supported by the brake
(quick stop)
Low speed and mounting
position 'motor at top'
Wear when starting for mo‐
tor a mounting position with
vertical shaft, even when
the brake is released
Friction of the brake lining
Relative movement and im‐
pacts between rotor and hub
Load change and impacts in
the backlash between the ar‐
mature disk, sleeve screws
and guide pins
Axial load cycle and shear
stresses in the springs due to
radial backlash in the arma‐
ture disk
Effect
Friction lining wear
Run-in of armature disk
and flange
Wear of the teeth (pri‐
marily on the rotor side)
Deflection of armature
disk, sleeve screws and
pins
Decrease in the spring
force or fatigue failure
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
Influencing factor
Work as a result of the
frictional force
Number of start / stop
cycles
Work as a result of the
frictional force
Number of start / stop
cycles
Number of start / stop
cycles, strength of brak‐
ing torque
Number of switching op‐
erations of the brake