Mitsubishi Electric FR-HC2-7.5K Instruction Manual page 47

Wiring of main circuit (FR-HC2-7.5K to 75K, FR-HC2-H7.5K to H220K)
(8) Wiring of outside box and high power factor converter
Use the cable shown in the below table for the connection.

Cable gauge
0.75 to 1.25mm
Converter terminals ROH and SD are used for the control signal for the inrush current limit circuit inside the outside box.

Always connect them to the outside box. Failure to do so will cause internal circuit breakage of the outside box.
Connect the output from the MC start command terminals (88R, 88S) to the terminals (88R, 88S) of the outside box.

Outside box Converter
ROH1 ROH
ROH2 SD
88R 88R
88S 88S
Total wiring
10m or less
length
<Wiring example of 7.5K>
Outside box
S2
(A2) (A1)
R2
T2
ROH1 ROH2 88R 88S

The terminal arrangement in the outside box differs by capacity. Check the terminal arrangement on 6.3 Outline dimensions (refer to page 150).
40
2
(1)
(2)
(3)
88R 88S A
NC NC NC RDY RSO
NC NC NC NC SE
88R 88S
NC NC
NC NC
To 88R
of the
outside box
Converter
R1/L11 S1/L21 N/-
B C NC AM 5 X1 X2
CVO Y1 PC PC RES SOF ROH
R/ S/
T/ R4
S4/
SE SE Y2 PC FM SD SD SD
L1 L2
L3 /L14
L24
A B C
NC RDY RSO CVO Y1
NC NC SE SE SE
To 88S
of the
outside box
P/+
T4/
L34
NC AM 5 X1 X2
PC PC RES SOF ROH
Y2 PC FM SD SD SD
To ROH2 To ROH1
of the of the
outside box outside box