User Manual

Confidential
Manual Carrier Controller 2020-07-30
SPD6752150121R21_EN.docx Page 15 of 25
4.3. Conductor selection
Cables used for power connectors need to comply with the requirements in Table 4-1.
Table 4-1 conductor cable selection
Parameter
Requirement
Remark
Voltage rating
Minimum 125 V
DC input wire cross section
6.0mm
2
Protective Earth conductor cross
section
6.0mm
2
Motor output wire cross section
At least 1.5mm
2
Motor earth bonding conductor cross
section.
At least 6.0mm
2
Product does not provide earth bonding
4.4. Protective earth (PE) connection
Prior to installing any other cable, the Carrier Controller must be connected to earth by fixing an
earthing wire with cable lug (1) using a screw (2), two flat washers (3), and two nuts (4) to the hole
marked with the PE logo as indicated in Figure 4-3 and Table 4-2.
The earthing wire must have a cross-sectional area of at least 6 mm
2
if copper is used as a
conductor. Otherwise, the cross-sectional area of the earthing wire shall be such that its
conductance is equivalent to that of a 6 mm
2
copper wire, and shall not be less than 4 mm
2
.
ATTENTION! It is not allowed to use the hole marked with the PE logo, screw (2), rings (3) and
nuts (4) for any other purpose than mechanically and electrically connecting the earthing wire to the
Carrier Controller.
ATTENTION! Enclosure and fasteners of the Carrier Controller are aluminum and zinc-plated steel,
respectively. Earthing wire, cable lug, earthing connector and fastener materials must be chosen
such that the current-carrying capacity of the protective earth connection will not be impaired by
electrochemical corrosion.
ATTENTION! Failure to correctly connect the protective earth can result in a safety hazard.
Figure 4-3: Protective earth connection