Figure 4-20 Size 4 And 5 Grounding Link Bracket In Its Surface Mount Position (As Supplied); Figure 4-21 Size 4 And 5 Grounding Link Bracket Folded Up Into Its Through- Panel Mount Position; Figure 4-22 Removal Of Internal Emc Filter And Line To Ground Varistors (Size 0) - Emerson unidrive sp User Manual

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Figure 4-20 Size 4 and 5 grounding link bracket in its surface
mount position (as supplied)
Grounding
link bracket
Figure 4-21 Size 4 and 5 grounding link bracket folded up into its
through- panel mount position
Grounding
link bracket
Unidrive SP User Guide
Issue Number: 13
Electrical Getting Basic
installation Started parameters
Mounting
bracket
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4.11.2 Internal EMC filter
It is recommended that the internal EMC filter be kept in place unless
there is a specific reason for removing it.
For 200V size 0 and frame sizes 3 and above, when the
drive is used with ungrounded (IT) supplies the internal EMC
filter must be removed unless additional motor ground fault
protection is installed or, in the case of 200V size 0 and size
WARNING
3 only, the external filter is also used.
For instructions on removal, refer to Figure 4-22, Figure 4-23
and Figure 4-24.
For details of ground fault protection contact the supplier of
the drive.
If the drive is used as a motoring drive as part of a Unidrive SP regen
system, then the internal EMC filter must be removed.
The internal EMC filter reduces radio-frequency emission into the line
power supply. Where the motor cable is short, it permits the
requirements of EN 61800-3:2004 to be met for the second environment
- see section 4.11.4 Compliance with EN 61800-3:2004 (standard for
Power Drive Systems) on page 86 and section 12.1.24 Electromagnetic
compatibility (EMC) on page 277. For longer motor cables the filter
continues to provide a useful reduction in emission level, and when used
with any length of shielded motor cable up to the limit for the drive, it is
unlikely that nearby industrial equipment will be disturbed. It is
recommended that the filter be used in all applications unless the
instructions given above require it to be removed or the ground leakage
current of 12mA for size 0, 28mA for size 1 to 3 or 56mA for size 4 to 6 is
unacceptable. See Figure 4-22, Figure 4-23 and Figure 4-24 for details
of removing and installing the internal EMC filter.
Figure 4-22 Removal of internal EMC filter and line to ground
varistors (size 0)
2
1
The supply must be disconnected before removing the
internal EMC filter or line to ground varistor screws.
WARNING
1. Internal EMC filter. Remove the bottom screw as shown.
2. Line to ground varistors. Remove the top screw as shown.
NOTE
The line to ground varistors should only be removed in special
circumstances.
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