Mitsubishi Electric 800 Series Instruction Manual page 41

• 575 V class (575 V input power supply, with a power factor improving AC or DC reactor)
Applicable inverter model
FR-E860-[]
0.75K(0017)
1.5K(0027)
2.2K(0040)
3.7K(0061)
5.5K(0090)
7.5K(0120)
*1 The cable size is that of the HIV cable (600 V grade heat-resistant PVC insulated wire) etc. with continuous maximum permissible temperature
of 75°C. It assumes a surrounding air temperature of 50°C or lower and the wiring distance of 20 m or shorter.
*2 The cable size is that of the THHW cable with continuous maximum permissible temperature of 75°C. It assumes a surrounding air temperature
of 40°C or lower and the wiring distance of 20 m or shorter.
(For the use in the United States or Canada, refer to "Instructions for UL and cUL" in the document enclosed with the product.)
*3 The cable size is that of the PVC cable with continuous maximum permissible temperature of 70°C. It assumes a surrounding air temperature of
40°C or lower and the wiring distance of 20 m or shorter.
(Selection example mainly for use in Europe.)
*4 The screw size for terminals R/L1, S/L2, T/L3, U, V, W, PR, P/+, N/-, and P1, and the earthing (grounding) terminal is shown.
The line voltage drop can be calculated by the following formula:
Line voltage drop [V] =
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 induction motor
Connect one or more general-purpose motors within the total wiring length shown in the following table.
Cable type
(carrier frequency)
1 (1 kHz) or lower
Unshielded
2 (2 kHz) or lower
Total wiring length (FR-E860-0.75K(0017) or higher)
500 m or less
• Use a "600 V class inverter-driven insulation-enhanced motor" and set Pr.72 PWM frequency selection according to the
wiring length.
Wiring length 50 m or
shorter
14.5 kHz or lower
40
2. Installation and Wiring
2.5 Main circuit terminals
Terminal Tightening
screw torque
size (N·m)
R/L1,
S/L2,
M4 1 2-4
M4 1 2-4
M4 1 2-4
M4 1 2-4
M4 1 2-4
M4 1 2-4
× wire resistance [mΩ/m] × wiring distance [m] × current [A]
Pr.72 setting Voltage
class
575 V
575 V
Wiring length 50 to 100 m
8 kHz or lower
Cable gauge
Crimp
HIV cables,
terminal
2
etc. (mm )
R/L1,
U, V, W S/L2, U, V, W
T/L3 T/L3
2-4 2 2
2-4 2 2
2-4 2 2
2-4 2 2
2-4 2 2
2-4 2 2
1000
0.75K 1.5K
100 m 100 m 100 m
100 m 100 m 100 m
300 m
300 m
300 m + 300 m = 600 m
Wiring length longer
than 100 m
2 kHz or lower
AWG/MCM
R/L1,
S/L2, U, V, W
T/L3
14 14
14 14
14 14
14 14
14 14
14 14
2.2K 3.7K 5.5K
200 m 400 m
200 m 300 m
7.5K
500 m
400 m