Mitsubishi Electric CR750-D Series, Instruction Manual

Page: 31 / 126

2Unpacking to installation
Installation 2-19
2.2.5 Connecting the power cable and grounding cable
The following shows how to connect the power cables and grounding cables.
(1) CR750 controller
Fig. 2-10 ： Connecting the power cable and grounding cable (CR750)
1) Prepare the power cable (AWG#14 (2mm
2
) or more).
2) Loosen the two screws fixing the terminal cover, and remove the cover. Then refer to Page 69, "(1) CR750
controller" and confirm the type of the terminal.
3) Confirm that the primary power matches the specifications.
4) Confirm that the primary power is OFF and that the controller power switch is OFF.
5) Connects the cable for the primary power supply connection to the ACIN terminal block of the controller.
When the Type A or C terminal, connect the primary power supply to L1 and L2/N terminal. When Type B
is attached, connect the primary power supply to L1, L2, and L3 terminal when using the three phase
primary power supply, and connect the primary power supply to L1 and L3 terminal when using the single
phase primary power supply.
6) Connect a cable of a primary power supply grounding to the ground terminal of the controller.
7) Install the power terminal cover as before.
This completes the connection of the power and grounding cables.
Grounding
ACIN terminal
L1
Single phase primary power supply
N/L2
terminal (PE)
ACIN terminal
L1 L3 L2
Three phase primary power supply
Grounding
terminal (PE)
ACIN terminal
L1 L3 L2
Single phase primary power supply
Grounding
terminal (PE)
* The controller is an example.
Note) When fixing the power cable to the ACIN terminal block with screws, be sure to hold the crimp terminal with your
hand to ensure that it does not rotate while fastening screws.
The dividers between terminals of the ACIN terminal block are fragile and may break if pressed.
Note 1) Fix the primary power cable to the terminal with the
screw.
Screw size: M4
Solderless terminal: φ8 or less
Recommendation: 2-M4
(JAPANESE SOLDERLESS TERMINALS
CO.,LTD.)
Wire size: AWG #14(2mm
2
)/ for M4 screw.
Note 2) Non-CE specification: L2
CE specification: N
Note 3) In the CE specification, as shown in the figure, con
-
nects the noise filter (SUP-EL20-ER6) of attach
-
ment between ACIN terminal blocks and primary
power supply.
Note 2)
<4> LINE/LOAD
<3> LINE/LOAD
<1> LINE/LOAD
<2> LINE/LOAD
Noise filter (attachment)
Type: SUP-EL20-ER
Label
Note 3)
Type A or C: For single phase
Type B: For three phase
Note 1)
Type B: For single phase
Note 1)
Note 1)
ACIN terminal
Remove the cover and confirm
the type of the terminal.