Mitsubishi Electric 800 Series Instruction Manual page 10

Main circuit terminals
 LD rating (Pr.570 Multiple rating setting = "1")
• 600 V class (575 V input power supply)
Terminal
Applicable
screw
inverter model
size

FR-F860-00027 to
M4
00090
FR-F860-00170 M4
FR-F860-00320 M5
FR-F860-00450 M6
FR-F860-00680 M8
FR-F860-01080 M8
FR-F860-01440 M10
FR-F860-01670 M10
FR-F860-02430 M10
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 ( ).
The line voltage drop can be calculated by the following formula:
Line voltage drop [V] = wire resistance [mΩ/m]
×
Use a larger diameter cable when the wiring distance is long or when it is desired to decrease the voltage drop (torque reduction) in the low speed range.
NOTE
• Tighten the terminal screw to the specified torque. A screw that has been tightened too loosely can cause a short circuit or malfunction. A screw that has been
tightened too tightly can cause a short circuit or malfunction due to the unit breakage.
• Use crimp terminals with insulation sleeves to wire the power supply and motor.
 Total wiring length
 With general-purpose motor
Connect one or more general-purpose motors within the total wiring length shown in the following table.
• When fast response current limit is enabled (Pr.156 = "0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, or 30"), the wiring length should be within the
value in the table below.
Pr.72 setting
(carrier frequency)
2 (2 kHz) or less 100 m
3 (3 kHz) or more 100 m
• When fast response current limit is disabled (Pr.156 = "1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, or 31"), the wiring length should be within the
value in the table below.
FR-F860-00027
100 m 300 m
• Use a "600 V class inverter-driven insulation-enhanced motor" and set frequency in Pr.72 PWM frequency selection according to wiring length.
Wiring length 50 m or shorter
15 (14.5 kHz) or lower
 With PM motor
Use the wiring length of 100 m or shorter when connecting a PM motor.
Use one PM motor for one inverter. Multiple PM motors cannot be connected to an inverter.
When the wiring length exceeds 50 m for a 600 V class motor driven by an inverter under PM motor control, set "9" (6 kHz) or less in Pr.72 PWM frequency
selection.
NOTE
• Especially for long-distance wiring, the inverter may be affected by a charging current caused by stray capacitances of the wiring, leading to an activation of the
overcurrent protection, malfunction of the fast-response current limit operation, or even to an inverter failure. If the fast-response current limit function malfunctions,
disable this function.
(Pr.156 Stall prevention operation selection Refer to Chapter 5 of the FR-F860 Instruction Manual (Detailed).)
• Refer to Chapter 3 in the FR-F860 Instruction Manual (Detailed) to drive a 600 V class motor by an inverter.
 Cable size for the control circuit power supply (terminals R1/L11 and S1/L21)
• Terminal screw size: M4
2
• Cable gauge: 0.75 mm to 2 mm
• Tightening torque: 1.5 N m
•
10
WIRING
Crimp terminal
Tightening
torque
R/L1,
P/+,
N•m
S/L2, U, V, W
T/L3
1.5 2-4 2-4 2-4
1.5 2-4 2-4 2-4
2.5 5.5-5 5.5-5 8-5
4.4 8-6 14-6 8-6
7.8 22-8 22-8 22-8
7.8 38-8 38-8 38-8
14.7 60-10 60-10 60-10
14.7 60-10 60-10 60-10
14.7 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
wiring distance [m]
×
FR-F860-00027 FR-F860-00061
200 m
100 m
FR-F860-00061 FR-F860-00090
500 m
Wiring length 50 m to 100 m
9 (9 kHz) or lower
2
HIV cables, etc. (mm
Earthing R/L1,
(grounding) S/L2, U, V, W
P1
cable T/L3
2-4 2 2
2-4 2 2
5.5-5 5.5 5.5
5.5-6 8 14
22-8 22 22
22-8 38 38
38-10 60 60
38-10 60 60
38-10 80 80
38-10 100 100
38-10 125 125
2×80 2×80
current [A] / 1000
×
FR-F860-00090
300 m
200 m
FR-F860-00170
or higher
500 m
Wiring length longer than 100 m
4 (4 kHz) or lower
Cable gauge

2
)
Earthing R/L1,
P/+,
(grounding) S/L2, U, V, W
P1
cable T/L3
2 2 14 14
2 2 14 14
8 5.5 10 10
8 5.5 8 6
22 22 4 4
38 22 2 2
60 38 1/0 1/0
60 38 2/0 2/0
80 38 4/0 250
100 38 250 300
125 38 2×2/0 2×3/0
2×80 60 2×4/0 2×250
FR-F860-00170
500 m 500 m
400 m 500 m
AWG/MCM
Earthing
P/+,
(grounding)
P1
cable
14 14
14 14
8 10
8 10
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
FR-F860-00320
or higher