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Install a Drive to Conform to the EMC Directive

Install drive models BxxxE, 2xxxE, and 4xxxE with this procedure to comply with the EMC Directive when the drive is a single unit or installed in a larger device.

  1. Install the drive on a grounded metal plate.
  2. Wire the drive and motor.
  3. Ground the wire shielding on the drive side and motor side.
    Figure 1. Wiring the Drive and Motor
    • Drive
    • Wiring length 1
    • Motor
    • Metal conduit
    • Grounding wire
     
    Note:

    • Use a braided shield cable for the drive and motor wiring or put the wires through a metal conduit.

    • Keep the cable between the drive and motor and the grounding wire as short as possible.

  4. Use a cable clamp to ground the motor cable to the metal plate.
    Note:

    Make sure that the protective ground wire complies with technical specifications or local safety standards.

    Figure 2. Ground the Shield
    • Braided shield cable
    • Metal plate
    • Cable clamp (conductive)
    Figure 3. Install a Drive with a Built-in EMC Filter
    • Grounding surface (Remove any paint or sealant.)
    • Enclosure panel
    • Metal plate
    • Drive
    • Shielded wire
    • Motor
    • Motor cable
    • Cable clamp
    • Grounding wire
  5. Connect an AC reactor or DC reactor to decrease harmonic distortion. Refer to DC Reactors to select a DC reactor.
    Note:

    • To comply with EN 61000-3-2 on drive models 2001 to 2006, 4001 to 4004, install a DC reactor.

    • The terminal block for the drive main circuit and the terminal block for the DC reactor have different shapes. The drive has a European-style terminal block, and the DC reactor has a round terminal block. Correctly prepare the ends of the wiring.

Ground Wiring

Enable the Internal EMC Filter

On drive models BxxxE, 2xxxE, and 4xxxE, move the screw or screws to turn ON and OFF (enable and disable) the EMC filter.

Make sure that the symmetric grounding network is applied, and install the screw or screws in the ON position to enable the built-in EMC filter in compliance with the EMC Directive. The EMC filter switch screw or screws are installed in the OFF position by default.

Figure 4. Symmetric Grounding

 

Table 1 shows asymmetric grounding networks.

Table 1. Asymmetric Grounding

Type of Grounding

Diagram

Grounded at the corner of the delta connection

Grounded at the middle of the side

Single-phase, grounded at the end point

Three-phase variable transformer without solidly grounded neutral
Table 2. EMC Filter Switch Location

Model

Switch Location Diagram

B001E - B004E

2001E - 2006E

Figure 5

B006E - B012E

2008E - 2021E

4001E - 4012E

Figure 6

2030E - 2082E

4018E - 4060E

Figure 7
Figure 5. EMC Filter Switch Location 1
  • SW (ON)
  • SW (OFF)
Figure 6. EMC Filter Switch Location 2
  • SW (ON)
  • SW (OFF)
Figure 7. EMC Filter Switch Location 3
  • SW (ON)
  • SW (OFF)

If you lose an EMC filter switch screw, use Table 3 to find the correct replacement screw and install the new screw with the correct tightening torque.

Table 3. Screw Sizes and Tightening Torques

Model

Screw Size

Tightening Torque

N∙m (lbf∙ in)

B001 - B004

2001 - 2006

M3 × 16

0.5 - 0.7

(4.4 - 6.2)

B006 - B012

2008 - 2021

4001 - 4012

M3 × 20

0.5 - 0.7

(4.4 - 6.2)

2030 - 2082

4018 - 4060

M4 × 20

1.0 - 1.3

(8.9 - 11.5)
1

The maximum wiring length between the drive and motor is:

  • BxxxE: 10 m (32.8 ft)

  • 2xxxE, 4xxxE: 20 m (65.6 ft)