Toshiba VF-nC1 User Manual download pdf (Page 105)

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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.

Tab le 2 lists noise filters recommended for the inverters.

Tab le 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

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