Oil supply for the auxiliary gear unit
The auxiliary gear unit has its own oil circuit, which is separate from that of the main gear unit.
The auxiliary gear unit is already lled with oil when delivered.
Speed monitoring
To avoid overspeeds if the overrunning clutch was to malfunction, for safety reasons, customers
should equip the drive combination with a speed monitoring system. The speed monitoring
comprises a pulse encoder, which is mounted in the intermediate ange, and an evaluation unit.
A tapped hole is provided at a suitable location in the intermediate ange to attach the pulse
encoder - this is ordered and supplied by the customer. Dimension "x" depends on the data of the
device manufacturer. The pulse encoder must be able to be mounted ush.
The speed monitoring device must be connected so that for a speed "> zero" at the output shaft
of the auxiliary drive, the main drive is automatically switched o. For safety reasons, the switch
o function must be tested at regular intervals, at least four times a year. The auxiliary drive is
switched on to test the switch o function. If the speed monitor responds - checked e.g. using
a warning light - then the speed monitoring is functioning correctly.
WARNING
Severe injury when the auxiliary drive explosively breaks apart
If the overrunning system develops a fault, due to the high resulting speeds, the auxiliary drive
can suddenly break apart explosively.
The speed monitoring function is mandatory for safety reasons.
Connecting the auxiliary drive
Before connecting the motor, identify the phase sequence of the three-phase mains using a
phase sequence instrument. Then connect the motor so that it rotates in the dened direction.
Observe the note attached to the gear unit.
The following diagram shows the gear unit design:
Description
3.19 Auxiliary drive
Assembly and operating instructions A5051en
46 Edition 06/2020
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