Servodrives / inverters series COSMOS 301X Installation, use and maintenance manual - EN
ATTENTION
Pour des raisons de sécurité, l'appareil doit toujours fonctionner avec la connexion PE
(Ground) connectée. risque d'électrocution! Le raccordement de PE (Ground) doit être
effectué à l'aide de la borne appropriée, en évitant de compter uniquement sur les vis de
fixation mécaniques.
The device integrates a EMI filter reducing conducted emissions; it complies with IEC 61800-3 Standard
(second environment, C3 category). If it is installed according to the manual instructions, it is adequate for its
protective purposes. The filter is optional. It can be installed by means of a short piece of cable to short-
circuit the pin 3 (LF) and 4 (PE/Ground) on the terminal board.
The EMI filter causes a considerable current waste to earth; in applications where such current may cause
problems (such as untimely tripping of differential circuit breakers), the user may disconnect the internal
mains filter. However, this will cause a considerable increase in conducted emissions, therefore it will be
necessary to install an external EMI filter. In this case or in case different emission levels are required (for
example due to different regulations or different installation categories, etc.), the user is solely responsible for
the choice of the correct filter.
The EMI filter causes a considerable current waste to earth; do not supply power to the
servo-drive without PE (Ground) connection, in order to avoid electrocution when touching
the metal components (such as the dissipater).
The installation of a battery for several devices causes an increase in the noise level which may exceed the
emissions level provided by the Standards. In this case, an additional external filter may be necessary. Due
to the extremely variable operating conditions (number of servo-drives, cable length, total current values,
required insertion loss), the choice of the filter is up to the user.
5.4.1 Power supply with IT distribution networks
If the device is used with IT distribution networks, it is necessary to disconnect the EMI filter by disconnecting
the length of cable that short-circuits pin 3 (LF) and pin 4 (PE / Ground) from the 5-pole input terminal board.
As described in the previous paragraph, however, this causes a considerable increase in the conducted
emissions of the device, so it is necessary to insert an external EMI filter; in this case the responsibility
regarding the choice of a filter different from the internal one of the device, falls entirely on the user.
Ver. 1.09 SMITECdd 33/74
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