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ACQ550-U1 User’s Manual
Technical data
Effective motor cable shields
The general rule for cable shield effectiveness is: the better and tighter the cable’s
shield, the lower the radiated emission level. The following figure shows an example
of an effective construction (for example Ölflex-Servo-FD 780 CP, Lappkabel or
MCCMK, NK Cables).
EN 61800-3 compliant motor cables
The most efficient EMC filtering can be achieved by following these rules:
•
Motor cables must have an effective shield as described in section
on page
•
Motor cable shield wires must be twisted together into a bundle (pig-tail) – the
bundle length must be less than five times its width – and connected to the
terminal marked
(at the bottom right-hand corner of the drive).
•
At the motor end, the motor cable shield must be earthed 360 degrees with an
EMC cable gland, or the shield wires must be twisted together into a bundle (pig-
tail) not longer than five times its width and connected to the PE terminal of the
motor.
•
See section
Motor cable length for 400 V drives
, columns “
” on page
to check the maximum motor cable lengths and the need for filters for 400 V
drives for IEC/EN 61800-3 compliance.
WARNING!
Do not use RFI/EMC filters on IT systems.
Insulation jacket
Braided metallic shield
Inner insulator
L1
L2
L3
Summary of Contents for ACQ550-U1-011A-6
Page 1: ...ACQ550 User s Manual ACQ550 U1 Drives 1 200 hp ...
Page 4: ......
Page 10: ...10 ACS550 U1 User s Manual Table of contents ...
Page 42: ...42 ACQ550 U1 User s Manual Start up control with I O and ID Run ...
Page 56: ...56 ACQ550 U1 User s Manual Control panel ...
Page 68: ...68 ACQ550 U1 User s Manual Application macros ...
Page 250: ...250 ACQ550 U1 User s Manual Fieldbus adapter ...
Page 266: ...266 ACQ550 U1 User s Manual Maintenance ...
Page 314: ...314 ACQ550 U1 User s Manual Index ...