Weir Warman 650 M200-MCR-G, Manual, Page: 176 / 287

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BA 5010 EN 03.10
5.16 Auxiliary drive
For certain applications the gear unit can, in addition to the main drive unit, be equipped with an auxiliary
drive unit. This enables the main gear unit to be operated at a lower output speed in the same direction of
rotation. The auxiliary drive is connected with the main gear unit by an overrunning clutch. For the basic
drive arrangement please see Figure 38.
Basic design of the gear unit with main and auxiliary drives
8
6 / 7
5
2
4
3
1
8
6
3
1
4
7
5
2
Fig. 38: Design of the gear unit with main and auxiliary drives
1 Main motor 4 Main gear unit 7 Overrunning clutch
2 Auxiliary motor 5 Auxiliary gear unit 8 Output shaft of the main
3 Coupling 6 Backstop gear unit
Depending on use, two auxiliary drives of different capacities are available for each gear­unit size.
5.16.1 Auxiliary drive, designed as a maintenance drive
The auxiliary drive should be protected from overloads.
The drive of the bucket elevator via the auxiliary drive must only be effected
during idle running, i.e. without load.
For the exact designation of the geared motor as well as the mounting position please refer to the drawings
(see section 1, "Technical Data"). The auxiliary gear unit has its own oil circulation system which is
separated from that of the main gear unit. The auxiliary gear unit is already filled with oil when delivered.
Before connecting the motor, determine the direction of rotation of the
three­phase current supply using a phase­sequence indicator, and connect the
motor in accordance with the pre­determined direction of rotation.
Observe the notice fixed to the gear unit.
The Special operating instructions should be observed for operation of the auxiliary gear
unit (Type KF MOTOX bevel­gear motor).
To avoid overspeeds in case of malfunctions of the overrunning clutch, the drive combination must be
equipped with a speed­monitoring device by the customer for safety reasons. The speed­monitoring
device consists of a pulse generator mounted in the intermediate flange (Figure 39) and of an evaluating
instrument.
A threaded hole M12x1 for the pulse generator to be made available by the customer
is provided at a suitable position in the intermediate flange. The dimension "
x " depends
on the instructions given by the equipment manufacturer (see Figure 39). The pulse
generator must satisfy the requirement
"suitable for flush mounting" .