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5.10.3 Connecting the power cord
NOTE
Do not connect the power supply to the
communication terminal block. Otherwise,
the whole system may fail.
You must first connect the earth line (note
that you should use only the yellow-green
wire to connect to the earth, and you must
turn off the power supply when you are
connecting the earth line) before you connect
the power cord. Before you install the screws,
you must first comb through the path along
the wiring to prevent any part of the wiring
from becoming exceptionally loose or tight
because the lengths of the power cord and
earth line are not consistent.
The
wire
diameter
must
specifications, and the terminal should be
tightly screwed. At the same time, do not
subject the terminal to any external force.
Tighten the terminal with an appropriate
screwdriver. Screwdrivers that are too small
may damage the terminal head, and cannot
tighten it.
Excessive tightening of the terminal may
cause the screw thread to deform and slip,
making
it
impossible
components securely.
Only use a ring terminal to connect the power
cord. Non-standard cable connections will
lead to poor contact which may in turn cause
exceptional heating and burning. The figure
below
demonstrates
incorrect connections.
1. Use round-type terminals of the correct specifications
to connect the power cable.
WARNING
When inserting the strong-current cables and
communication lines into the wiring holes,
they must be equipped with wiring across
rings to avoid becoming worn.
2. The external power cables are inserted into the wiring
holes of the chassis and the electric control box, and
the power cables "L1, L2, L3, N" and earth wire are
connected to the power wiring board marked with "L1,
L2, L3, N" and the grounding screw next to the power
wiring board correspondingly.
comply
with
to
connect
the
both
correct
and
Figure 5.34
40
Power supply
L1
L2
L3
L1
L2
L3
WARNING
Terminals must be used for connection. Use
round-type
terminals
specifications to connect the power cables.
Do not directly connect the cable ends. Use
the correct terminal, or it may cause over
heating and fire.
3. Fasten and fix the cables with wire clips to avoid
stress on the terminals.
Tighten the screws
Power cord
4. Models 252-785 use wire clip A with both front and
reverse clip; 850-1065 use wire clip B, only one
type of installation for front clip.
Wire clip A
Wire clip A
Installation method 1:
Installation method 2:
Front clip
Reverse clip
Wire clip B
Installation method:
Front clip
5. When installing different types and wire diameters of
power cables, different clipping methods are used to
ensure that the wire clips can be used to compress
the power cables and prevent the terminals from
being stressed when the power cables are pulled.
(Note: When using clipping method 1, ensure that
each power cable is double insulated)
Clipping method 1:
Clipping method 2: Wire
clip on the insulated
Wire clip on the
power cable
sheath of the power cable
N
N
Figure 5.35
of
the
correct
Figure 5.36
Figure 5.37
Figure 5.38
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