Connection Of The Power Regeneration Converter (Mt-Rc) - Mitsubishi Electric FR-A820-00046 Instruction Manual

Connection of stand-alone option units
2.10.7

Connection of the power regeneration converter (MT-RC)

When connecting the power regeneration converter (MT-RC), perform wiring securely as shown be-
low. Incorrect connection will damage the power regeneration converter and the inverter. The MT-RC
is applicable to FR-A840-02160(75K) or higher. After making sure that the wiring is correct, set "1" in
Pr. 30 "Regenerative function selection" and "0" in Pr. 70 "Special regenerative brake duty".
Three-
phase AC
power
supply
Fig. 2-66:
NOTES 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 1 s 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.
Inverter input power
When connecting the power coordination reactor and others, refer to Instruction Manual of the
MT-RC for precautions.
2 - 90
MCCB
MC1
Connection of the power regeneration converter (MT-RC)
supply (MC2)
ON
MT-RC power
supply (MC1)
1 s or more
MC2
DCL
P1
P
MT-RCL
R
R2
S
S2
T T2
ON
Installation and wiring
Inverter
U
R/L1
M
V
S/L2
W
T/L3
R1/L11
S1/L21
P1
P/+ N/-
Reset signal
P
N
RES
R2
STF
S2
SD
T2
C
B
R
A
S
RDY
T
R1 Ready signal
SE
S1
MT-RC
Alarm signal
I002426E