in the case of a failure the risk of an effect into the danger zone is reduced
(ATEX directive 2014/34EU).
For example, this can be achieved as follows:
●
Reduce the energy via an intermediate short circuit. For information
about the function “Intermediate short circuit” please refer to Indradrive
documentation. When using foreign converters refer to the manufactur‐
er.
●
Isolation of the energies before they are transferred into the potentially
explosive atmosphere by isolating the voltage of the lines and motors
present in the potentially explosive atmosphere.
5.3.7
Holding brake
Use the optional holding brake in normal operation only in standstill time.
For further general notes about holding brakes see
.
5.3.8
Acceptance test
Before initial start-up of the system or after changing a motor, do an accept‐
ance test according to EN 60079-0. The acceptance report must confirm
compliance with the instructions and conditions of use given here.
5.3.9
Residual risks
The existing residual risks are to be observed by the user, when the installa‐
tion is designed.
●
Overstress
–
When the motor is overloaded, including cases where errors in the
mechanical or electrical equipment of the machine cause such
overloading, high temperatures may occur that result in explosion
hazards.
●
Operation in explosive dust atmosphere.
–
An operation in explosive dust-atmosphere can built a layer on the
motor during a residence time, which does no longer ensure a suf‐
ficient motor cooling.
●
Grounding and discharge currents
–
Variable-speed drive systems cause unavoidable discharge cur‐
rents. Please observe a proper installation of protective conductor
and potential equalization line. In the case of interrupted protective
conductor and potential equalization line due to occurring error ca‐
ses during operation or faulty connections can raise sparks on
transition points.
●
Temperature control
–
The failure of the single-channel temperature monitor in the device
system may occur, as the result of an error, and might not be de‐
tected, even if the motor is operated within the normal temperature
range and load cycle.
32/65
Explosion protection
MS2E Synchronous Servomotors acc. to ATEX Directive
2014/34/EU
Bosch Rexroth AG R911387136_Edition 02
Содержание REXROTH MS2E
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