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Wiring Of Main Circuit (fr-hc2-7.5k To 75k, Fr-hc2-h7.5k To H220k); Connection Diagram (when Using With The Fr-a700 Series) - Mitsubishi Electric FR-HC2-7.5K Instruction Manual

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Wiring of main circuit (FR-HC2-7.5K to 75K, FR-HC2-H7.5K to H220K)

2.7
Wiring of main circuit
(FR-HC2-7.5K to 75K, FR-HC2-H7.5K to H220K)
 Perform wiring securely to conform with the harmonic suppression guideline of the former Ministry of International
Trade and Industry (currently the Japanese Ministry of Economy, Trade and Industry). Incorrect wiring causes the
converter to display an alarm or causes an fault or damage.
 Refer to the Instruction Manual of each inverter for the wiring of the inverter. Special attention must be paid to the
wiring length and wire gauge.
2.7.1

Connection diagram (when using with the FR-A700 series)

Connection method differs by the inverter series. Perform connection by referring to the Instruction Manual of the
inverter.
(1)
MCCB
MC
Power
supply

Do not connect anything to the inverter power input terminals R/L1, S/L2 and T/L3. Incorrect connection will damage the inverter. Connecting opposite
polarity of terminals P and N will damage the converter and the inverter.

Use input terminal function selection to assign the terminal used for X10 signal. (Refer to the Instruction Manual of the inverter.)

The power phases of the terminals R4/L14, S4/L24, and T4/L34 and the terminals R/L1, S/L2, and T/L3 must be matched.

Do not insert MCCB between terminals P and N (P and P, N and N).

Always connect the terminal R/L1, S/L2, T/L3 of the converter to the power supply. If the inverter is operated without connecting the terminals to the power
supply, the converter will be damaged.

Do not insert MCCB or MC between (1) (terminal R/L1, S/L2, and T/L3 input of the Reactor 1) and (4) (terminal R4/L14, S4/L24, and T4/L34 input of the
converter) of the above diagram. It will not operate properly.

Securely perform grounding (earthing) by using the grounding (earthing) terminal.

Installation of a fuse is recommended. (Refer to page 11)

The MC power supply stepdown transformer is only equipped in the 400V class models.
Number
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
34
Outside box (FR-HCB2)
(2)
Limit resistor
Reactor1
R2/
(FR-HCL21)
L12
R2/
R/
L1
L12
S2/
L22
S/
S2/
L2
L22
T2/
L32
T/
T2/
L3
L32

Filter capactors
MC power
supply stepdown
transformer

Overheat detection thermostat
for the limit resistor (NC contact)
(6)
Wiring
Power supply and reactor 1
Reactor 1 and outside box
Outside box and reactor 2
Reactor 2 and converter
Converter and inverter
Reactor 1 and converter
Power supply and inverter
Outside box and converter
Reactor2
(FR-HCL22)
R3/
L13
R3/
R4/
L13
L14
S3/
L23
S4/
S3/
L24
L23
T3/
L33
T3/
T4/
L33
L34

Limit MC1
(3)
(4)
(8)
ROH1
Inrush current limit
resistor overheat
Auxiliary contact
protection
(NO contact)
Contact
ROH2
input
common
MC1
88R
MC
connection
terminal

88S
MC
connection
terminal
Reset
Converter stop
Monitor switching
Monitor switching
Contact input common
24VDC power supply
(External transistor common)
Refer to page
35
36
37
37
38
39
39
40
(7)
Converter
(FR-HC2)
Inverter

R/L1
R4/L14
U
S/L2

V
T/L3
S4/L24
W
(5)
R1/L11
T4/L34
S1/L21

Fuses
P/+
P/+
N/-
N/-

C
Relay
output
ROH
B
(fault
output)
A
Inverter run
RDY
enable signal

X10
SD
Converter
RSO
reset
RES
88R
CVO
During
converter run

Y1
Multi-purpose
SD
88S
output 1
Y2
Multi-purpose
output 2
SE
RES
Open collector output common
SOF
Y3
Multi - purpose output 3
X1
SE2
Open collector output common
+
-
X2
FM
PU
SD
connector
Indicator
SD
PC
AM
(+)
R/L1

Analog signal output
S/L2
(0 to 10VDC)
5
(-)
T/L3
R1/L11
S1/L21

Motor
Earth
(Ground)

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