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NSTALLATION
VACON
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3
3.2.5 General cabling rules
1
Before starting the installation, check that none of the components of the fre-
quency converter is live.
2
Place the motor cables sufficiently far from other cables:
•
Avoid
placing the motor cables in long
parallel lines
with other cables.
• If the motor cable runs in parallel with other cables, the
minimum distance
between the motor cable and other cables is
0.3 m
.
• The given distance also applies between the motor cables and signal cables of
other systems.
• The
maximum length
of the motor cables for MI1-3 is
30 m
. If use longer cable,
current accuracy will be decreased.
• The
motor cables
should cross other cables at an angle of
90 degrees
.
3
If cable insulation checks are needed, see Chapter 3.2.8
4
Connecting the cables:
• Strip the motor and mains cables as advised in Figure 3.15.
• Connect the mains, motor and control cables into their respective terminals,
see Figures 3.7 - 3.8.
• Note the tightening torques of chapter3.2.1 and chapter 3.2.2 .
• For information on cable installation according to UL regulations see Chapter
• Make sure that the control cable wires do not come in contact with the elec-
tronic components of the unit.
• If an
external brake resistor
(option) is used, connect its cable to the appropri-
ate terminal.
•
Check the connection
of the earth cable to the motor and the frequency con-
verter terminals marked with.
• Connect the
separate shield of the motor cable to the earth plate
of the fre-
quency converter, motor and the supply centre.
