Toshiba VF-nC1 instruction manual Compliance with EMC directive Model, noise filter inside

E6581090

9.1.3Compliance with EMC directive

9.1.3.1The model, noise filter inside

(1)Single-phase 200V class : VFNC1S-2002PL to 2022PL

The above mentioned models install EMI noise filter inside. So the conducted and radiated noise can be reduced, optional EMI noise filters are not needed.

(The additional noise filter should be installed, when more effective reduction is required.)

(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)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).

(5)Installation of the zero-phase and/or the ferrite core can also effectively reduce the radiated noise further.(Input or/and output of inverter)

9 【Ex. Countermeasure - main circuit wiring】

Connect to the
power source
	Inverter
	panel
	(Metal)
	Grounding
	plate
Connect	to
the control

Shielded cables

Separate input and output cables.

Do not run input cables along-side output cables.

Do not bundle input and output cables.

IM

Fig. 1

I-2