Technical data

MHD Sychronous motors Assembly 18-7
DOK-MOTOR*-MHD********-PR05-EN-P version 0.1
Encoder connector
In case of the motors MHD041, MHD071, and MHD090, you can select
the output direction when mounting these motors. The flange sockets are
designed such that they can be turned (angle of rotation of 270 degrees).
Adjustment of the desired connector output direction is described below.
Note: Do not use any tools (e.g. tongs or pliers or screwdrivers) to
turn the motor flange socket. Mechanical damage to the flange
socket cannot be excluded.
The motor flange socket can be turned easily if an appropriate plug has
been connected. Owing to the leverage of the connected plug, the flange
socket can be turned manually to the desired cable output direction.
Proceed as follows:
1. Connect the encoder cable to the flange socket.
2. Put the flange socket to the desired output direction by turning the
connected cable.
The desired output direction is set.
Note: Whenever the flange socket is turned, the holding torque in
the set position is reduced. To ensure the required holding
torque of the flange socket, the output direction should be
changed no more than 5 times!
It is not necessary to “rebuild” the flange socket (i.e. dismounting and
mounting the flange socket, relocated by 90 degrees). The following
problems and risks can arise should the flange socket be “rebuilt”:
• The O-ring seal between the flange socket and the motor housing is
not ensured any longer.
• The tightening torques prescribed are, perhaps, not kept.
• The TFL coating (screw locking element) of the locking screws will
wear by unscrewing, thus becoming ineffective.
Note: No warranty!
If the cable output direction is changed by “rebuilding” the
flange socket, the warranty for the overall drive system
given by BOSCH REXROTH will expire. The cable output
direction may only be changed by turning the flange socket.
Should the cable output direction of the angular encoder connector of the
MHD093 – MHD131 motors not be the desired direction, it can be turned
by 90 degrees. To achieve this, proceed as follows:
1. Loosen the four locking screws on the top of the connector.
2. Turn the plug part with union nut in relation to the connector housing
into the desired position (in increments of 90 degrees).
3. Retighten the locking screws (tightening torque: 0.8 Nm ±10%).
4. Ensure that, when retightening the screws, cable strands and the seal
are prevented from being damaged.
Changing the connector output
direction at
MHD041
MHD071
MHD090
Changing the cable output
direction at
MHD093 – MHD131