105
2. INSTALLATION AND WIRING
2.10 Connection of stand-alone option units
1
2
3
4
5
6
7
8
9
10
2.10.7 Connection of the power regeneration converter
(MT-RC)
When connecting the power regeneration converter (MT-RC), perform wiring securely as follows. Incorrect connection will
damage the power regeneration converter and the inverter. The MT-RC is compatible with FR-A840-02160(75K) or higher.
After making sure that the wiring is correct and secure, set "1" in Pr.30 Regenerative function selection and "0" in Pr.70
Special regenerative brake duty.
NOTE
• When using the inverter with the MT-RC, install a magnetic contactor (MC) at the input side of the inverter so that power is
supplied to the inverter after one second or more has elapsed after powering ON the MT-RC. When power is supplied to the
inverter prior to the MT-RC, the inverter and the MT-RC may be damaged or the MCCB may be shut off or damaged.
• When connecting the power coordination reactor and others, refer to Instruction Manual of the MT-RC for precautions.
2.10.8 Connection of the DC reactor (FR-HEL)
• Keep the surrounding air temperature within the permissible range (-10 to +50°C). Keep enough clearance around the
reactor because it heats up. (Take 10 cm or more clearance on top and bottom and 5 cm or more on left and right
regardless of the installation direction.)
DCL
P1
P1
R/L1
S/L2
T/L3
R1/L11
S1/L21
R
R2
RES
U
V
W
Inverter
MT-RCL
P
P/+ N/-
P
N
RDY
SE
MT-RC
Reset signal
Ready signal
Three-phase
AC power
supply
MCCB
MC2
MC1
M
STF
SD
S
T
S2
T2
R2
S2
T2
R
S
T
R1
S1
C
Alarm signal
B
A
MT-RC power supply (MC1)
Inverter input power supply (MC2)
1s or more
ON
ON
10 cm or more
5 cm or
more
5 cm or
more
5 cm or
more
5 cm or
more
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