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Planning the electrical installation
Contents of this chapter
This chapter contains instructions on selecting, placing and protecting the brake circuit
components and cables.
Limitation of liability
The installation must always be designed and made according to applicable local laws and
regulations. ABB does not assume any liability whatsoever for any installation which breaches
the local laws and/or other regulations. Furthermore, if the recommendations given by ABB
are not followed, the drive may experience problems that the warranty does not cover.
Generic guidelines
See Electrical planning instructions for ACS880 liquid-cooled multidrive cabinets and modules
(3AXD50000048634 [English]) for the generic guidelines for planning the electrical installation
(selecting cables, routing cables, etc.) of multidrive cabinets and modules.
Selecting the user-defined brake resistors
WARNING!
ABB is not responsible for user resistor selection or protection of the resistor.
Select the resistor according to the resistor specification given in the technical data. In
addition, consider the following:
•
Each chopper must feed a resistor or resistor assembly of its own.
•
The resistance (R) of the brake resistor assembly must be equal to or above the value
specified. Never use resistance values below the specified value.
Planning the electrical installation 25
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