Connection Of The Brake Unit (Bu Type); Connection Of The High Power Factor Converter (Fr-Hc) - Mitsubishi Electric F700 Instruction Manual

1.5.2

Connection of the brake unit (BU type)

Connect the brake unit (BU type) correctly as shown below. Incorrect connection will damage the inverter. Remove
the jumper across terminals HB-PC and terminals TB-HC of the brake unit and fit it to across terminals PC-TB.
3-phase AC
power supply
*1 When the power supply is 400V class, install a step-down transformer.
CAUTION
1. The wiring distance between the inverter, brake unit and discharge resistor should be within 2m. If twisted wires are used,
the distance should be within 5m.
2. If the transistors in the brake unit should become faulty, the resistor can be unusually hot, causing a fire. Therefore, install
a magnetic contactor on the inverter's power supply side to shut off a current in case of fault.
1.5.3

Connection of the high power factor converter (FR-HC)

When connecting the high power factor converter (FR-HC) to suppress power harmonics, perform wiring securely
as shown below.
Incorrect connection will damage the high power factor converter and inverter.
After making sure that the wiring is correct, set "2" in Pr. 30 Regenerative function selection. (Refer to page 83.)
R
MCCB
3-phase AC
power supply
*1 Remove the jumpers across the inverter terminals R/L1-R1/L11, S/L2-S1/L21, and connect the control
circuit power supply to the R1/L11 and S1/L21 terminals. Always keep the power input terminals R/L1, S/
L2, T/L3 open. Incorrect connection will damage the inverter. (E.OPT (option alarm) will occur. (Refer to
page 236.))
Opposite polarity of terminals N/-, P/+ will damage the inverter.
Do not insert the MCCB between terminals P/+ − N/- (P/+ − P/+, N/- − N/-).
*2
*3 Use Pr. 178 to Pr. 189 (input terminal function selection) to assign the terminals used for the X10 (X11) signal.
(Refer to page 85.)
For communication where the start command is sent only once, e.g. RS-485 communication operation,
use the X11 signal when making setting to hold the mode at occurrence of an instantaneous power failure.
(Refer to page 83.)
CAUTION
1. Use sink logic when the FR-HC is connected. The FR-HC cannot be connected when source logic (factory setting) is selected.
2. The voltage phases of terminals R/L1, S/L2, T/L3 and terminals R4, S4, T4 must be matched.
MC
MCCB
T
*1
MC
ON
OFF
Remove the
MC
Fit a jumper jumper
PC HA HB HC TB
OCR
brake unit (BU type)
S T R4 S4 T4
MC1 MC2
R4 S4 T4
From FR-HCL02
R3 S3 T3
MC2
External box
MC1
R2 S2 T2
FR-HCL01
R S T
Connection of stand-alone option units
Inverter
Motor
U
R/L1
V
S/L2 I M
W
T/L3
P/+ N/−
electrical-discharge
resistor
P PR
OCR
High power factor converter (FR-HC)
N P Y1orY2 RDY
N
Inverter
R/L1
RSO SE
S/L2
*1
T/L3
SD
RES
X10
*3
X11
*3
N/−
*2
P/+
R1/L11
*1
S1/L21
1
19