Mitsubishi Electric 800 Series Instruction Manual page 49

Control circuit terminal
 Total wiring length
 With general-purpose motor
Connect one or more general-purpose motors within the total wiring length shown in the following table.
Pr.72 setting FR-F820-00046(0.75K),
(carrier frequency) FR-F840-00023(0.75K)
2 (2 kHz) or lower 300 m
3 (3 kHz) or higher 200 m
When driving a 400 V class motor by the inverter, surge voltages attributable to the wiring constants may occur at the motor terminals, deteriorating the
insulation of the motor. In this case, take one of the following measure.
• Use a "400 V class inverter-driven insulation-enhanced motor" and set Pr. 72 PWM frequency selection according to the wiring length.
Wiring length shorter than 50 m
15 (14.5 kHz) or lower
• Connect the surge voltage suppression filter (FR-ASF-H, FR-BMF-H) to the output side of the FR-F840-01160(55K) or lower and the sine wave filter (MT-
BSL, MT-BSC) to the output side of the FR-F840-01800(75K) or higher.
 With PM motor
Use the following length of wiring or shorter when connecting a PM motor.
Pr.72 setting
Voltage class
(carrier frequency)
200 V 0 (2 kHz) to 15 (14 kHz)
5 (2 kHz) or lower
400 V 6 to 9 (6 kHz)
10 (10 kHz) or higher
Use one PM motor for one inverter. Multiple PM motors cannot be connected to an inverter.
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-F800 Instruction Manual (Detailed).)
• The optional surge voltage suppression filter (FR-ASF-H/FR-BMF-H) or sine wave filter (MT-BSL/MT-BSC) cannot be used under PM motor control. Do not connect it.
• For details of Pr.72 PWM frequency selection, refer to Chapter 5 of the FR-F800 Instruction Manual (Detailed).
• The FR-ASF-H and FR-BMF-H can be used under V/F control and Advanced magnetic flux vector control. The MT-BSL and MT-BSC can be used under V/F control.
(For details, refer to the Instruction Manual of the option.)
• Refer to Chapter 3 in the FR-F800 Instruction Manual (Detailed) to drive a 400 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
•
2.3
Control circuit terminal
 Terminal layout
AM

This terminal functions as terminal FM for the FM type, and as terminal CA for the CA type.
 Wiring method
• Power supply connection
For the control circuit wiring, strip off the sheath of a cable, and use it with a blade terminal. For a single wire, strip off the sheath of the wire and apply directly.
Insert the blade terminal or the single wire into a socket of the terminal.
10
WIRING
FR-F820-00077(1.5K),
FR-F840-00038(1.5K)
500 m
300 m
Wiring length 50 m to 100 m
9 (9 kHz) or lower
FR-F820-00077(1.5K) or lower,
FR-F840-00038(1.5K) or lower
100 m
100 m
50 m
50 m
2
∗1
2 5 4 1 F/C +24 SD So SOC
5 10E 10 SE SE RUN SU IPF OL FU
FR-F820-00105(2.2K) or higher,
FR-F840-00052(2.2K) or higher
500 m
500 m
Wiring length longer than 100 m
4 (4 kHz) or lower
FR-F820-00105(2.2K) or higher,
FR-F840-00052(2.2K) or higher
100 m
100 m
100 m
50 m
SD SIC S1 S2 PC A1 B1 C1
PC RL RM RH RT AU STP MRS RES
A2 B2 C2
Recommended cable
gauge:
0.3 to 0.75 mm
SD SD STF STR JOG CS
2