Mitsubishi Electric FR-XC-11K, Instruction Manual

Page: 65 / 186

Wiring
64
INSTALLATION AND WIRING
2.8.4
Wiring (common bus regeneration mode with
harmonic suppression enabled)
 Wiring between the power supply and the reactor
• Cable gauge differs by the capacity. Select an appropriate cable by referring to page 43 to perform wiring.
 Wiring between the reactor and the converter
• Cable gauge differs by the capacity. Select an appropriate cable by referring to page 43 to perform wiring.
 Wiring between the converter and the inverter
• Connect the wiring for the control circuit correctly so that the commands sent from the converter are transmitted to the
inverter without fail.
For the cable gauge of the cable for the main circuit terminals P/+ and N/- (P to P and N to N), refer to
page 43 .
NOTE
• Terminals P/+ and N/- are used for connection with the inverter. Do not connect anything to power input terminals (R/L1, S/L2,
and T/L3) of the inverter. Incorrect power input connection will damage the inverter. Connecting opposite polarity of terminals
P/+ and N/- will damage the inverter and the converter.
• Do not connect an AC or DC reactor to the inverter when using the converter in the common bus regeneration mode.
MCCB
MC
Dedicated reactor
R/L1
S/L2
T/L3
R2/L12
S2/L22
T2/L32
Power
supply
Multifunction
regeneration
converter
Dedicated reactor
R/L1
S/L2
T/L3
R2/L12
S2/L22
T3/L32
P/+
N/-
R2/L12
S2/L22
T3/L32
LOH LOH1
LOH2
SD SD
FAN FAN1
Control
circuit
Main circuit wiring length
10 m or shorter
Control circuit cable gauge
0.3 to 1.25 mm
2
Control circuit wiring length
5 m or shorter
Multifunction regeneration
converter
Inverter
P/+
N/-
P/+
X10 (MRS)
RES
SD
RYB
RSO
SE
∗2
Control
circuit
R2/L12
S2/L22
T2/L32
∗3
∗1
N/-
∗1
Installation of a fuse on each cable is recommended to prevent the damage from
spreading in case of an inverter failure. Select the fuse according to the motor capacity.
To use a motor whose capacity is smaller than the inverter capacity by two ranks or
more, select the fuse with the capacity that is one rank lower than the inverter capacity.
Refer to the fuse selection table on
page 21 .
For connection of multiple inverters, use the same gauge cable as the inverter's power
cable for wiring between the inverter main circuit terminal (P/+ or N/-) and a junction
terminal. (Refer to the Instruction Manual of the inverter.)
∗2
The function needs to be assigned to an inverter terminal to be connected to the
converter terminal RYB.
Refer to the Instruction Manual of the Inverter.
∗3
Do not install any MCCB between the inverter and the converter (P to P and N to N).
For the gauge of the cable used for connection of multiple inverters, refer to
page 67 .
Control circuit cable gauge
0.3 to 1.25 mm
2
Control circuit wiring length
30 m
Main circuit wiring length
50 m or shorter