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52(110)
CABLING AND CONNECTIONS
6
6.1.5 Installation
instructions
1
Before starting the installation, check that none of the components of the
frequency 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 cables runs in parallel with other cables, note the
minimum
distances
between the motor cables and other cables given in table
below.
The given distances also apply between the motor cables and signal
cables of other systems.
The maximum length of the motor cables is 300 m
(units with power
greater than 1.5 kW)
and 100 m
(units with power from 0.75 to 1.5 kW).
NOTE: If you use long motor cables (max. 100m) together with small
drives (
≤
1.5 kW) the motor current measured by the drive can be much
higher than the actual motor current due to capacitive currents in the
motor cable. Consider this when setting up the motor stall protection
functions
.
The
motor cables should cross
other cables at an angle of 90
degrees.
3
If
cable insulation checks
are needed, see Chapter 6.1.7.
4
Connect the cables:
Strip the motor and mains cables
Remove the screws
of the cable protection plate. Do not open the
cover of the power unit!
Make holes into and
pass the cables
through the rubber grommets on
the bottom of the power unit (see chapter 6.1.4). Note: Use a cable
gland instead of the grommet in types where this is required.
Connect the mains, motor and control cables
into their respective
terminals (see e.g. Figure 6-11).
For information on the installation of
greater units
, please contact
or your local distributor.
For Information on
cable installation according to UL regulations
Make sure
that the control cable wires do not come in contact with the
electronic components of the unit.
If
an
external brake resistor
(option) is used, connect its cable to the
appropriate terminal.
Check the connection
of the earth cable to the motor and the
frequency converter terminals marked with
.
Connect
the
separate shield of the power cable
to the earth
terminals of the frequency converter, motor and the supply centre.
Attach the cable protection plate with the screws.
Ensure
that the control cables or the cables of the unit are
not
trapped
between the frame and the protection plate.
Distance
between cables
[m]
Shielded
cable
[m]
0.3
≤
50
1.0
≤
200