23 / 74
MKE Synchronous Servomotors
Type plate
Bosch Rexroth AG
R911402016, Edition 02
–
An operation in explosive dust-atmos-
phere can built a layer on the motor
during a residence time, which does no
longer ensure a sufficient motor cooling.
•
Grounding and discharge currents
–
Variable-speed drive systems cause
unavoidable discharge currents. Please
observe a proper installation of protec-
tive conductor and potential equalization
line. In the case of interrupted protective
conductor and potential equalization line
due to occurring error cases during oper-
ation or faulty connections, for example,
can raise sparks on transition points.
•
Temperature monitoring
–
The failure of the single-channel temper-
ature monitor in the device system may
occur, as the result of an error, and might
not be detected, even if the motor is
operated within the normal temperature
range and load cycle.
4.6.7
Emergency stop
Accumulated energy in the drive controller must
be dispersed or isolated as quickly as possible
when the emergency shutdown system is actu-
ated, so that the risk of an effect into the danger
zone is reduced in the event of a failure.
(Directive 2014/34/EU,,
appendix II, chapter 1.6.2)
The user has the following possibilities:
•
The isolation of the energy from the drive unit
output is ensured if, in addition to switching
off the power, the drive control unit is elec-
tronically disabled in the event of an emer-
gency shutdown. This is done by switching
off the mains contactor with subsequent fault
reaction of the actuator due to the mains
failure (see F281). The user must set the
required drive-side fault response on the
drive unit using the drive parameters (see
P-0-0119) in accordance with the functional
description.
•
To ensure that the encoder supply lines are
also voltage-free, the control voltage of the
drive unit must also be switched off.
If the control voltage and power are switched off
at the drive unit, the output on the motor side is
automatically electronically interlocked via the
output stage and possible stored energies in the
DC link are thus isolated on the output and motor
side.
•
If it is possible, the DC link short-circuit can
be used to quickly dissipate the energies in
the DC link of the drive unit after disconnec-
tion from the mains.
Irrespective of these possibilities, the user must
always check with a suitable measuring device
whether parts of the system are still under
residual voltage (e.
B. caused by residual ener-
gies of capacitors in filters and drive units, etc.)
before working on the system - as specified in the
safety instructions. Wait for their discharging
time.
Other environmental factors
Observe the notes regarding the dangers due to
external interference such as
, for example:
•
Operation within the permissible ambient
conditions
•
Vibration and shock load
•
Protection of protective conductor connec-
tions against dirt, corrosion, moisture and/or
aggressive materials, etc.
5
Identification
5.1
Type plate
The type plate is provided for identification of the
motor and contains all significant electric data,
serial number, manufacturing date, mark of con-
