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E6581090
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9
9.1.3.2 The models without EMI filters
(1) Shingle-phase 100V class : VFNC1-1001P to 1007P
Three-phase 200V class : VFNC1-2001P to 2022P
Shingle-phase 200V class : VFNC1S-2002P to 2022P
This subsection explains what measures must be taken to satisfy the EMC directive.
Insert a recommended EMI filter (Table 2) on the input side of the inverter to reduce radiation
and transmission noises. In the combinations listed in Table 2, inverters were checked for
conformity with the EMC directive. For inverters used in Japan, it is recommended to use the
NF series of noise filters.
Table 2 lists noise filters recommended for the inverters.
Table 2. Recommended EMI filter selection
Voltage class Inverter
Filter for class A
Compliance Motor cable
length 20m or less
Filter for class B
Compliance Motor cable
length 5m or less
VFNC1-2001P EMFA2006Z -
VFNC1-2002P EMFA2006Z -
VFNC1-2004P EMFA2006Z -
VFNC1-2007P EMFA2006Z -
VFNC1-2015P EMFA2015Z -
Three-phase
200V class
VFNC1-2022P EMFA2015Z -
VFNC1S-2002P EMFAS2011Z -
VFNC1S-2004P EMFAS2011Z -
VFNC1S-2007P EMFAS2011Z -
VFNC1S-2015P EMFAS2025Z -
Single-phase
200V class
VFNC1S-2022P EMFAS2025Z -
VFNC1S-1001P EMFAS2011Z -
VFNC1S-1002P EMFAS2011Z -
VFNC1S-1004P EMFAS2011Z -
Single-phase
100V class
VFNC1S-1007P EMFAS2025Z -
VFNC1S-2002PL With a built-in filter With a built-in filter
VFNC1S-2004PL With a built-in filter With a built-in filter
VFNC1S-2007PL With a built-in filter With a built-in filter
VFNC1S-2015PL With a built-in filter With a built-in filter
Single-phase
200V class
（Built-in filter
type）
VFNC1S-2022PL With a built-in filter With a built-in filter
(2) The main cables such as input to the EMI filter and output of the inverter and the signal cables
should be shielded, then cable length should be wired as short as possible. The main input
cable should be separated from the main output cable, and cables for control signal also should
be separated from main cables, not wiring parallel and not bundling, cross the wires where
necessary.
(3) Install EMI filter and inverter on the same metal back plate in an inverter panel. The metal back
plate or the cubicle must be grounded absolutely, by using short thick wires, separated from the
main cables.
(4) Please separate input cable to EMI filter from output cable as much as possible.
(5) Shielded cables should be grounded on the metal back plate in order to reduce the radiated
noise from the other cables. It is an effective measure that shielded cables are grounded close
to the inverter or/and operation panel or/and EMI filter(less than 10cm).
Strip the cable and fix it to the metal plate by means
of a metal saddle for electrical work or equivalent.
Shielded cable