Maintenance/repair
Maintenance operations
Holding brake
9
40
Lenze • BA 33.0006 • 5.1
9.2.3 Holding brake
The brakes need to be checked on a regular basis to ensure safe and trouble-free
operation.
The necessary maintenance intervals primarily depend on the stress to which the brake
is subjected in an application. When a maintenance interval is being c alculated, all
causes of wearmust be taken into account(see notes ”Wearon spring-applied brakes”).
In the case of brakes which are subjected to low levels of stress, e.g. holding brakes with
emergencystop function,regularinspectionsat a fixedtimeintervalarerecommended.
In order to reduce the amount of work involved in maintenance, perform the inspection
at the same time as other maintenance work carried out cyclically on the machine if
possible.
If the brakes are not properly serviced, operating faults, production outages or damage
to machinery can occur. A maintenance concept adapted to the operating conditions
andthe stresses towhichthe brakes aresubjectedmust therefore bedrawn up for every
application. For brakes, the maintenance intervals a nd servicing work listed in the
following table are necessary.
Maintenance interval for holding brake with
emergency stop
Maintenance work
At least every 2 years
Inspection of the brake integrated in the motor:
• Check ventilation function and
activation/deactivation
After 1 million cycles at the latest
Shorter intervals in the case of frequent emergency
stops!
The brakes of the MCA, MCM, MCS, MQA, and MDKS motors cannot be accessed from
theoutside! (Maintenance workon thebrakes must be carriedout by Lenze Service staff
only!)
9.3 Maintenance operations
Stop!
• Make sure that no foreign bodies can enter the inside of the motor!
• Do not remove plugs when voltage is being applied!
Danger!
• Only work on the drive system when it is in a deenergised state!
• Hot motor surfaces of up to 150 °C. Observe cooling times!
• Remove loads acting on motors or secure loads acting on the drive!
9.3.1 Blower
If the motor is equipped with a blower, this blower must be cleaned or even replaced at
regular intervals depending on the amount of dust (if necessary, daily).
To Next Page
Loading...
