6
05.01
6.4 HFD reactor
6-167
© Siemens AG 2008 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 05/2008 Edition
6.4 HFD reactor
For the unregulated 5 kW and 10 kW infeed modules, the commutating reactor
is integrated. With 28 kW, it must be external.
For connection of the regulated infeed/regenerative feedback modules to the
line supply, the HF/HFD reactor tuned to 7 kHz is required (see selection Table
6-9).
The HFD reactors perform the following functions:
S To limit the harmonics fed back into the line supply
S Energy store for the step–up operation of the infeed units
S Current limiting for line supply oscillations
S Together with a damping resistor, the HFD reactors dampen the system os-
cillations of the converter system. The HF reactors are replaced with the
HFD reactors with damping resistor because they provide increased oper-
ational reliability and a longer lifetime.
The HFD reactor should be mounted as close as possible to the line supply
infeed module.
Caution
The 100 mm clearance above and below the components to ensure air
circulation and cooling must be carefully maintained. If this is not observed,
then the components could prematurely age.
!
Caution
The surface temperature of the HFD reactors may exceed 80 °C to 150 °C.
Temperature–sensitive components must be placed at sufficient distance or be
thermally protected!
Note
The connecting cables to the NE module must be kept as short as possible
(max. 5 m). For lengths exceeding 1 m, twisted shielded connection lines, with
the shielding contacting ground on both side, should be used.
Notice
It is not permissible to use HFD reactors in the motor cable.
Note
If commutating reactors are used that have not been released by SIEMENS for
SIMODRIVE 6SN11, harmonics or switching edges not permitted for the
semiconductors can occur that can damage, disturb or early age other
equipment connected to the particular line supply.
General
information
6 Infeed Modules11.0505.08
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