Connection Of The Brake Unit (Bu Type); Connection Of The High Power Factor Converter (Fr-Hc) - Mitsubishi Electric FR-V500 Instruction Manual

Connection of stand-alone option units
1.3.3

Connection of the brake unit (BU type)

Connect the BU type
brake unit correctly as
shown on the
Incorrect connection will
damage the inverter.
Remove the jumpers
from terminals HB-PC
and TB-HC and fit a
jumper across terminals
PC-TB of the brake unit.
*1 Connect the inverter terminals (P, N) and brake unit (BU type) terminals so that their terminal signals match with each
other. (Incorrect connection will damage the inverter.)
*2 When the power supply is 400V class, install a step-down transformer.
*3 For capacity 5.5K or less, remove the jumper across terminals PR-PX.
CAUTION
• The wiring distance between the inverter, brake unit and resistor unit should be within 2m . If twisted
wires are used, the distance should be within 5m.
• 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 configure a circuit
so that a current is shut off in case of fault.
• Do not remove a jumper across terminal P and P1 except when connecting a DC reactor.
1.3.4

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

When connecting the high power factor converter (FR-HC) to suppress power supply 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".
R S
MCCB
Power
supply
*1 Remove the jumpers across the inverter terminals R-R1, S-S1, and connect the control circuit power supply to the R1
and S1 terminals. Always keep the power input terminals R, S, T open. Incorrect connection will damage the inverter.
(E.OPT (option alarm) will occur. (Refer to the Instruction Manual (basic).))
*2 Do not insert the MCCB between terminals P-N (P-P, N-N). Connect the inverter terminals (P, N) and high power factor converter
(FR-HC) terminals so that their terminal signals match with each other. (Incorrect connection will damage the inverter.)
*3 Use Pr. 180 to Pr. 183, Pr. 187 (input terminal function selection) to assign the terminals used for the X10 (X11) signal. (Refer to
page 150.)
For communication where the start command is sent only once, e.g. when used with the computer link plug-in option (A5NR),
use the X11 signal when making setting to hold the mode at occurrence of an instantaneous power failure. (Refer to page 92.)
CAUTION
• The voltage phases of terminals R, S, T and terminals R4, S4, T4 must be matched.
• Use sink logic (factory setting) when the FR-HC is connected. The FR-HC cannot be connected when
source logic is selected.
• Do not remove a jumper across terminal P and P1 except when connecting a DC reactor.
MCCB
right.
Power
supply
Fit a jumper.
PC
High power factor converter (FR-HC)
T R4 S4 T4
MC1MC2
R4 S4 T4
From FR-HCL02
R3 S3 T3
MC2
Outside box
MC1
R2 S2
T2
FR-HCL01
R S T
MC
Remove
jumpers.
*3
T *2
MC
ON
OFF
Remove
MC
jumpers.
HA HB HC TB
OCR
BU type brake unit
N P
Y1 or Y2 RDY
6
Inverter
Motor
R U
S V
IM
T
W
PR
PX
P N
*1
Discharging resistor
P PR
OCR
Inverter
RSO SE R
S *1
T
SD
RES
X10 *3
X11 *3
N
*2
P
R1
*1
S1
N