5
Electrical installation
Installation instructions
Operating Instructions – CMP ELVCD
23
5.3
Installation instructions
5.3.1
Connecting a supply cable
•
The nominal voltage of the ELVCD drive must correspond to the data for the sup-
ply voltage.
•
Dimension the cable cross section according to the input current I
NInverter
for rated
power (see "Technical data" chapter).
•
Install fuses F11/F12/F13 at the beginning of the supply cable upstream of the
power supply unit (DC 24 V, DC 48 V) to protect the line, see chapter "Installation
topology".
Size the fuses according to the cable cross section.
•
Use only copper conductors with a minimum temperature range of 85 °C as supply
cable.
•
The DC 24 V and DC 48 V supplies have a common ground potential (GND). The
central star point of the reference potential must be installed as close to the power
supply units as possible.
•
The maximum length of the supply cable between the power supply unit and the
ELVCD drive must not exceed 10 m with a core cross section of 2.5 mm
2
. If longer
cables are required, contact SEW-EURODRIVE.
•
If you connect more than one ELVCD drive to one power supply unit, install the
drives in star configuration. The star point must be installed as close to the power
supply unit as possible. Dimension the cable cross sections to the star point ac-
cording to the total current. Contact SEW‑EURODRIVE in such cases.
5.3.2
Contactor
NOTICE
Damage to the ELVCD inverter due to jog mode of the contactor.
Damage to the ELVCD inverter.
•
Do not use the contactor (see chapter ""Installation topology"" (→
24)) for jog
mode but only for switching the ELVCD inverter on and off. Use the control com-
mands for jog mode.
•
Observe a minimum switch-off time of 2 s for the contactor.
•
If the contactor is installed in the DC 48 V supply cable, use only a contactor of
utilization category DC-3 (EN 60947-4-1).
5.3.3
UL-compliant installation
INFORMATION
Due to UL requirements, the following chapters are always printed in English inde-
pendent of the language of the publication:
22759468/EN – 11/2017