Küenle KFU 210 Series, Быстрый старт

Страница: 17 / 56

KFU 210- / 410-
16
A
Mains connection
The mains supply cable may be as long as
required. To be separated from control, data and
motor cable.
B
DC-link connection
The frequency inverter is to be connected to the
same mains potential or a common direct voltage
source. Cables with a length >300 mm must be
shield-ed, the cable shield must be connected to
the mounting plate on both sides. Use twisted
cables where possible.
C
Control connection
Control and signal cables must be kept physically
separate from the power cables. Analog signal
lines are to be connected to the shield potential on
one side. Install sensor cables separate from motor
cables.
The low voltage circuits (e.g. terminal X210A,
X210B) are isolated from the main circuit (e.g. U,
V, W) by way of safety isolation and safety
impedance.
D
Motor and brake resistor
The shield of the motor cable is to be connected to
ground potential properly on both sides. On the
motor side use a metal compression gland. On the
frequency inverter side an appropriate shield clamp
is to be used. The signal cable used for monitoring
the motor temperature must be kept separate from
the motor cable. Connect the shield of this line on
both sides. If a braking resistor is used, the
connection cable must also be shielded, and the
shield is to be connected to earth potential on both
sides.
E
Relay
The relay enables using high-energy signals.
As from size 8, with AC 3x525 V or AC 3x690 V mains operation, terminal X13 must be connected
additionally. Note the connection information for size 8.
Line choke
Line chokes reduce mains harmonics and reactive power. In addition, a longer service life of the frequency
inverter is possible. When using a line choke, note that line chokes may reduce the maximum output voltage of
the frequency inverter. The line choke must be installed between the mains connection and the input filter.
Input filter
Input filters reduce grid-bound, high-frequency radio interference voltage. Install input filter on the mains side up-
stream of the frequency inverter.