6
Electrical installation
Installation instructions for fieldbus interfaces, field distributors
Manual – PROFINET IO Interfaces, Field Distributors
41
6.2
Installation instructions for fieldbus interfaces, field distributors
6.2.1
Connecting supply system leads
•
The nominal voltage and frequency of the MOVIMOT
®
inverter must correspond to
the data for the power supply system.
•
Dimension the cable cross section according to the input current I
line
for rated
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.
•
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.
22870857/EN – 12/2016
