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(4)
Wiring example of converter and inverter
These units should be connected to transmit commands from the converter to the inverter securely.
Connection method differs depending on the inverter series. Refer to the Instruction Manual of the inverter when
connecting. Refer to the below table for the wiring length.
Across terminals P and P / terminals N and N
Other control signal lines
Converter
(FR-HC2)
∗1
P/+
R4/L14
S4/L24
N/-
T4/L34
RDY
Control
RSO
circuit
SE
Wire gauge for
0.75 to 2mm
the control circuit
NOTE
The converter operates as a common converter. Use terminals P/+ and N/- to connect it with the inverter. Do not
connect anything to the inverter power input terminals R/L1, S/L2, and T/L3. Incorrect connection to the inverter
power input will damage to the inverter. Connecting opposite polarity of terminals P/+ and N/- will damage the
inverter and the converter.
• Do not connect the DC reactor to the inverter when using a high power factor converter.
(5)
Wiring reactor 1 and converter
Supply power to the power detecting terminals (R/L1, S/L2, T/L3) separately from the main circuit wiring.
Switch the tap (V1, V2, V3) of the MC power supply stepdown transformer according to the input power supply voltage as shown
in the below table.
Power Supply Voltage
380V or more, less than 400V
400V or more, 440V or less
More than 440V, 460V or less
Connect the MC start command terminals (88R, 88S) to the inrush current limit MC (for three phases) through the buffer relay.
Power
Supply
NOTE
The terminal R/L1, S/L2, and T/L3 of the converter are control terminals to detect power supply phases of the power
supply. The voltage phases of the terminals R4/L14, S4/L24, and T4/L34 and the terminals R/L1, S/L2, and T/L3 must
be matched. If these terminals are not connected correctly, the converter does not operate properly.
If the inverter is operated without connecting the terminals R/L1, S/L2, and T/L3 of the converter to the power supply,
the converter will be damaged.
Wiring of main circuit (FR-HC2-H400K, H560K)
50m or less
30m or less
Inverter
Installation of a fuse is recommended to avoid the damage to spread in case of
an inverter failure. Select a fuse according to the motor capacity. When using a
P/+
∗3
motor, of which the capacity is smaller than the inverter capacity by two ranks or
N/-
more, select the fuse capacity according to the inverter capacity. Refer to the fuse
selection table on page 13.
∗2
X10
When connecting several inverters, perform wiring with the wire gauge of the
inverter's power supply side for terminal P/+ and N/-. (Refer to the Instruction
RES
Manual of the inverter.)
SD
The function of the inverter terminal, which is connected to the terminal RDY of
the converter, needs to be set at the inverter side.
Refer to the Instruction Manual of the inverter.
2
Do not insert MCCB between terminals P/+ and N/- (P and P, N and N).
Switching Tap Position
V1
V2
V3
Reactor 1
(FR-HCL21)
R/
R2/
L12
L1
S2/
S/
L22
L2
T/
T2/
L3
L32
R/L1
R5/L15
V1
410VAC
V2
430VAC
V3
S/L2
470VAC
S5/L25
Stepdown
transformer
(1PH 630VA)
Total wiring length
Cable gauge
MC1
MC2
MC3
Inrush current
limit MC
MC
Bu1
Buffer relay for driving MCs
(SR-N4)
10m or less
2
1.25mm
Converter
(FR-HC2)
88R
88S
R/L1
S/L2
T/L3
R1/L11
S1/L21
2
51
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