A The 24-V control voltage should be grounded (at 0 V) as close‐
ly to the drive controller as possible in order to ensure that the
impedance to the ground of the drive controller is as low as
possible.
A The connection of the 0-V terminals of the control voltage to
the housing potential is conductive. That is why it is not possi‐
ble to use an insulation monitoring feature at +24 V and 0 V
against the housing.
B Establish a conductive connection of the bare metallic mount‐
ing rails of the HCQ controller to the mounting surface in the
control cabinet.
B Establish a conductive connection of the mounting surface to
the protective conductor system
C, D Only use shielded motor and encoder cables for the MTX
micro. We strongly recommend that you use Rexroth RKL and
RKG cables.
A-E, PE Connect all grounds and protective conductors to a common
star point in the control cabinet along routes that are as short
as possible
Fig. 5-18: MTX micro grounding concept
External resistor
The external resistor (connected to terminal X9) is used to limit the charging
current when the line voltage is turned on. After the turn-on, the resistor is
used as braking resistor.
Bosch Rexroth AG DOK-MTXMIC-EASY*******-CO06-EN-P48/177
IndraMotion MTX micro Easy Setup for Standard Turning and Milling Machines
Selecting and connecting the hardware
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