Installation Instructions For Fieldbus Interfaces, Field Distributors - SEW-Eurodrive MOVIMOT D EtherNet/IP Compact Manual

5.2

Installation instructions for fieldbus interfaces, field distributors

5.2.1 Connecting supply system leads
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Installation instructions for fieldbus interfaces, field distributors
The nominal voltage and frequency of the MOVIMOT
the data for the power supply system.
Dimension the cable cross section according to the input current I
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power (see MOVIMOT operating instructions, "Technical data" chapter).
Install fuses at the beginning of the power supply cables behind the supply bus
junction.
The following fuses are permitted:
– Fuses in utilization category gG
– Power circuit breakers with characteristic B or C
– Motor circuit breaker
Size the fuses according to the cable cross section.
3-phase frequency inverters generate a DC current component in the leakage cur-
rent and can significantly reduce the sensitivity of an residual current device of
type A. A type A residual current device is this not permitted as protection device.
Only use type B residual current devices.
If the use of a residual current device is not mandatory according to the standards,
SEW‑EURODRIVE recommends not to use a residual current device.
Use only a line contactor in utilization category AC-3 (EN 60947-4-1) for switching
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the MOVIMOT drive.
SEW‑EURODRIVE recommends using earth-leakage monitors with pulse-code
measurement in voltage supply systems with a non-grounded star point (IT sys-
tems). Using such devices prevents the earth-leakage monitor mis-tripping due to
the ground capacitance of the inverter.
Compact Manual – EtherNet/IP™ Interfaces, Field Distributors
Electrical installation
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inverter must correspond to
for rated
line
5
25