Connection Of Power Regeneration Converter (Mt-Rc); Connection Of The Power Factor Improving Dc Reactor (Fr-Hel) - Mitsubishi Electric FR-A720-0.4K Instruction Manual

Connection of stand-alone option units
2.5.7

Connection of power regeneration converter (MT-RC)

When connecting a power regeneration converter (MT-RC), perform wiring securely as shown below. Incorrect
connection will damage the regeneration converter and inverter. After connecting securely, set "1" in Pr. 30 Regenerative
function selection and "0" in Pr. 70 Special regenerative brake duty.
Three-phase
AC power
supply
CAUTION
⋅ When using the FR-A700 series together 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 1s 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 trip or be damaged.
⋅ Refer to the MT-RC manual for precautions for connecting the power coordination
reactor and others.
2.5.8

Connection of the power factor improving DC reactor (FR-HEL)

(1) Keep the surrounding air temperature within the permissible range (-10°C to +50°C). Keep enough clearance
around the reactor because it heats up. (Take 10cm or more clearance on top and bottom and 5cm or more on left
and right regardless of the installation direction.)
5cm or more
(2) When using the DC reactor (FR-HEL), connect it between terminals P1 and P/+.
For the 55K or lower, the jumper connected across terminals P1 and P/+ must be removed. Otherwise, the reactor
will not exhibit its performance.
For the 75K or higher, a DC reactor is supplied. Always install the reactor.
CAUTION
⋅ The wiring distance should be within 5m.
⋅ The size of the cables used should be equal to or larger than that of the power supply cables (R/L1, S/L2, T/L3). (Refer to page 14)
44
MCCB MC1
MC2
DCL
MT-RCL
R
S
T
10cm or more
5cm or more
P1 P/+
Remove
the jumper.
Inverter
R/L1
U
S/L2 IM
V
T/L3
W
R1/L11
S1/L21
P1
P1
P/+ N/-
P
P N
Reset signal
R2
RES
R2
STF
S2
S2
SD
T2
C
T2
B
A
R
S
RDY
T
Ready signal
R1
SE
S1
MT-RC
Inverter input power
5cm or more
FR-HEL
Alarm signal
supply (MC2)
MT-RC power ON
supply (MC1)
1s or more
5cm or more
ON