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MKE Synchronous Servomotors
Electrical connection
Bosch Rexroth AG
R911414374, Edition 01
8.3
Electrical connection
8.3.1
Electrical connection general
notes
WARNING
Risk of explosion due to improper handling
during motor connection!
Make sure that the motor is only connected in de-
energized state and a non-explosive atmosphere.
Before working on the system, always use a suit-
able measuring device (e.g. multimeter) to check
whether any parts of the system are still under
residual voltage (e.g. caused by residual energies
of capacitors in filters and drive units etc.) their
discharge times are to be waited for.
The connection between the protective con-
ductor terminal and the operating ground must
be made before any other connections.
The connection or terminal points to or on the
control unit must be located outside the poten-
tially explosive atmosphere or must be approved
for use in potentially explosive atmospheres.
WARNING
Danger! Electric voltage! Operations in the
vicinity of live parts are extremely dangerous.
−
Work required on the electric system may
only be carried out by skilled electricians.
Tools for electricians (VDE tools) are abso-
lutely necessary.
−
Isolate (even auxiliary circuits).
−
Secure against reactivation.
−
Ensure de-energization.
−
Ground and short-circuit.
−
Cover or shield any adjacent live parts.
WARNING
High electric voltage! Danger to life, risk of injury
by electric shock.
While the rotor is rotating, motors with perma-
nent magnet excitation create a voltage > 60 V at
the motor connections.
Any work may only be carried out while the motor
is at standstill.
Never connect or disconnect plug connectors
under load!
NOTICE
Never touch the connection points of electro-
static sensitive devices!
−
Mounted components e.g. temperature
sensor, encoder) can contain parts suscep-
tible to electrical discharge (ESD).
Observe ESD safety measures.
Power and encoder connection
Fig.:
An additional connection of a protective or equi-
potential bonding conductor is mandatory for
Ex motors. MKEmust be grounded via the addi-
tional connection part (protective earth terminal
on the motor flange). Ground terminal cross sec-
Chapter 8.3.5 “Ground connection”
.
