Technical data

4-4 MHD Type Code MHD Sychronous motors
DOK-MOTOR*-MHD********-PR05-EN-P
7. Holding Brake
Optional. Required for clamping the servo axis when the machine is in the
de-energized state.
Option Holding Brakes
0 Without holding brake
1, 3 With holding brake Please refer to the motor type codes for
the holding torques.
Fig. 4-7: MHD holding brakes
The holding brake is operated according to the “electrically releasing”
principle. In the de-energized state, a magnetic force acts upon the brake
armature disk. This causes the brake to close and to hold the axis.
By applying 24 V
DC (± 10%), the permanent magnetic field is
compensated by the electrically generated magnetic field: the brake
opens.
Note: Please also observe the installation and safety instructions on
the motor holding brakes in the chapter entitled “Application
Instructions”.
8. Output Direction of Power Connector
The possible cable output directions for Bosch Rexroth motors are
defined as follows. The following is applicable (view on the output shaft):
Power connector
Encoder connector
RIGHT
LEFT
SIDE A
SIDE B
Range of rotation (270°)
of encoder connector
Range of rotation (270°)
of power connector
Overlapping output
directions are
possible
abgang_mhd.fh10
Fig. 4-8: Definition of cable output directions
Option Output direction Available for the
motors below
A Output connector in direction of side A
B Output connector in direction of side B
L Power connector to the left
R Power connector to the right
MHD093
MHD095
MHD112
MHD115
MHD131
U Power and feedback connectors turnable
within a range of 270°
MHD041
MHD071
MHD090
Fig. 4-9: MHD cable output directions
MHD motors are delivered according to the option specified in the order.
Note: The cable output direction can be changed during assembly
(see Chapter 18).
Abbrev. column 15
Abbrev. column 17
Definition of cable output
direction
Supplied Condition