Mitsubishi Electric 800 Series Instruction Manual page 9

• Punching out the knockout holes
(1) Punch out the knockout holes by firmly tapping it with an object, such as a hammer. Remove any sharp edges and burrs from knockout holes of the wiring
cover.
FR-F860-00090 or lower
Do not knock out the hole.
(2) Conduit hubs must always be used to connect conduit to the enclosure knockout. The hub shall be assembled to the conduit before it is installed in the
conduit box knockout opening.
NOTE
• Be careful not to injure yourself with the sharp edges and burrs of the knockout holes.
• To avoid wire offcuts and other foreign matter to enter the inverter, conduits must be installed to the all knockout holes.
• Wiring cover hole diameters
Hole diameter
Inverter capacity
35
FR-F860-00027 to 00090
44
FR-F860-00170, 00320
63
FR-F860-00450
WARNING
 Do not wire without using conduits. Otherwise, the cable sheathes may be scratched by the wiring cover edges, resulting in a short circuit or ground fault.
 Cable gauge of main circuit terminals and earth (ground) terminals
Use an appropriate cable gauge to suppress the voltage drop to 2% or less.
If the wiring distance is long between the inverter and motor, the voltage drop in the main circuit will cause the motor torque to decrease especially at a low speed.
The following table indicates a selection example for the wiring length of 20 m.
 SLD rating (Pr.570 Multiple rating setting = "0")
• 600 V class (575 V input power supply)
Terminal Tightening
Applicable
screw
inverter model
size

FR-F860-00027 to
M4 1.5
00090
FR-F860-00170 M4 1.5
FR-F860-00320 M5 2.5
FR-F860-00450 M6 4.4
FR-F860-00680 M8 7.8
FR-F860-01080 M8 7.8
FR-F860-01440 M10 14.7
FR-F860-01670 M10 14.7
FR-F860-02430 M10 14.7
FR-F860-02890 M12 (M10) 24.5
FR-F860-03360 M12 (M10) 24.5
FR-F860-04420 M12 (M10) 46

The cables used should be 75°C copper cables.

The terminal screw size indicates the size of terminal screw for R/L1, S/L2, T/L3, U, V, W, PR, P/+, N/-, P1, P3, and the screw for earthing (grounding), and P/+ for
option connection. A screw for earthing (grounding) of the FR-F860-02890 or higher is indicated in ( ).
Number of
(mm) holes
3 1
3 1•1/4
3 2
Crimp terminal
torque
R/L1,
P/+,
N•m
S/L2, U, V, W
P1
T/L3
2-4 2-4 2-4
2-4 2-4 2-4
5.5-5 5.5-5 8-5
14-6 14-6 14-6
22-8 22-8 22-8
38-8 38-8 38-8
60-10 60-10 60-10
60-10 60-10 60-10
80-10 80-10 80-10
100-12 100-12 100-12
125-12 125-12 125-12
2×80-12 2×80-12 2×80-12 60-10
FR-F860-00170 to 00450
Applicable conduit size
(Nominal diameter)
HIV cables, etc. (mm
Earthing R/L1,
(grounding) S/L2, U, V, W
cable T/L3
2-4 2 2 2
2-4 2 2 2
5.5-5 5.5 5.5 8
14-6 14 14 14
22-8 22 22 22
22-8 38 38 38
38-10 60 60 60
38-10 60 60 60
38-10 80 80 80
38-10 100 100 100
38-10 125 125 125
2×80 2×80 2×80
Main circuit terminals
Cable gauge

2
AWG/MCM
)
Earthing R/L1,
P/+,
(grounding) S/L2, U, V, W
P1
cable T/L3
2 14 14
2 14 14
5.5 10 10
14 6 6
22 4 4
22 1 1
38 1/0 1/0
38 2/0 2/0
38 4/0 250
38 250 300
38 2×2/0 2×2/0
60 2×4/0 2×250
Earthing
P/+,
(grounding)
P1
cable
14 14
14 14
8 10
4 6
2 4
1/0 4
1/0 1
2/0 1
4/0 1
250 1
2×2/0 1
2×4/0 1/0
9
WIRING