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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-H280K)
P/+
R4/L14
S4/L24
N/-
T4/L34
RDY
Control
RSO
circuit
SE
Cable 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 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 MC for 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.
50m or less
30m or less
Inverter
Installation of a fuse is recommended to avoid the damage to spread in case
∗1
of an inverter failure. Select a fuse according to the motor capacity. When
P/+
∗3
using a motor, of which the capacity is smaller than the inverter capacity by
N/-
two ranks or more, select the fuse capacity according to the inverter capacity.
Refer to the fuse selection table on page 11, 13.
∗2
When connecting several inverters, the wire gauge of terminal P/+ and N/-
X10
should be same as the wire gauge of the inverter's power supply side. (Refer
RES
to the Instruction 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-H280K)
R/
R2/
L1
L12
S2/
S/
L22
L2
T/
T2/
L3
L32
R/L1
V1
R5/L15
AC410V
V2
AC430V
V3
S/L2
AC470V
S5/L25
Stepdown
transformer (1PH 630VA)
Total wiring length
10m or less
Cable gauge
Wiring of main circuit (FR-HC2-H280K)
MC
Limit MC
MC
Bu1
Buffer relay for driving MCs
(SR-N4)
2
1.25mm
Converter
(FR-HC2-H280K)
88R
88S
R/L1
S/L2
T/L3
R1/L11
S1/L21
2
45
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