ABB ACS6080 - Figure 10-19 Overview of Grounding the Drive - INU1 Is Shut down (A) and INU2 Is Shut down (B). Numbers Indicate the Connection Sequence

PREVENTIVE AND CORRECTIVE MAINTENANCE
PRODUCT
ACS6000
DOCUMENT KIND
User manual
DOCUMENT ID.
3BHS212794 E01
REV.
N
LANG.
en
PAGE
235/266
Procedure
1. Shut down the drive according to the established procedures.
IMPORTANT! DO NOT switch off the auxiliary voltage.
For general information on de-energizing the drive, see “De-energizing the
drive locally” on page 143.
2. Use the telescopic insulating pole (Fig. 10-18) to connect and tighten the
enclosure ground clamp to the ground ball stud of the PE ground busbar.
3. Connect the busbar ground clamps to the ground ball studs of the phase
busbars in the following sequence:
• Busbars for the cables to the secondary transformer windings
(1 in Fig. 10-20)
• Busbars for the motor cables (2 in Fig. 10-20)
• Busbars in the INU (3 in Fig. 10-20)
Figure 10-19 Overview of grounding the drive - INU1 is shut down (A) and INU2 is
shut down (B). Numbers indicate the connection sequence.
LSU2LSU1 INU1 INU2TEU1 COU1
M
AB
1 1
22 33