Unidrive
LV
model sizes 1 to 3 Installation Guide
Issue code: uliu1
2-32 Installing the Drive
Isolator
Contactor
AC
supply
Ground
Key to symbols
Single power cable
Ground cable
0V
Output 3
Output 2
Output 1
Ground
Host
controller
Back-plate
Control cables
to the Drives
Drive
Optional external
braking resistor
No sensitive circuits permitted
in this zone
Power-ground
bus-bar
Enclosure
Connection to cable armour or
shield
Maximum length: 50mm (2 in)
L1
L2
Armoured or shielded cable
(3-phase + ground)
Alternative safety ground
connection
Three-core power cable or
three single power cables
Fuses or
MCB
L3
L1 L2 L3 U VW+
_
RFI filter
5 − 10mm
( /4 − /8 in)
13
L1 L2 L3
≤100mm
(4 in)
Figure 2–22 Wiring guidelines for compliance with EMC emission standards (model sizes 1 and 2)
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