Mitsubishi Electric FR-F720-00046 Instruction Manual page 46

(2) FR-BR-(H) connection example with resistor unit
Three phase AC
power supply
*1 Connect the inverter terminals (P/+, N/-) and brake unit (FR-BU2) terminals so that their terminal names match with each other.
(Incorrect connection will damage the inverter and brake unit.)
*2 When the power supply is 400V class, install a step-down transformer.
*3 The wiring distance between the inverter, brake unit (FR-BU) and resistor unit (FR-BR) should be within 5m (16.4feet). Even
when the wiring is twisted, the cable length must not exceed 10m (32.8feet).
*4 Normal: across TH1-TH2...close, Alarm: across TH1-TH2...open
CAUTION
⋅ Do not remove a jumper across terminal P/+ and P1 except when connecting a DC reactor.
(3) Connection example with MT-BR5 type resistor unit
Three phase AC
power supply
*1 Connect the inverter terminals (P/+, N/-) and brake unit (FR-BU2) terminals so that their terminal names match with each other.
(Incorrect connection will damage the inverter and brake unit.)
*2 When the power supply is 400V class, install a step-down transformer.
*3 The wiring distance between the inverter, brake unit (FR-BU2) and resistor unit (MT-BR5) should be within 5m (16.4feet). If
twisted wires are used, the distance should be within 10m (32.8feet).
*4 Normal: across TH1-TH2...open, Alarm: across TH1-TH2...close
*5 CN8 connector used with the MT-BU5 type brake unit is not used.
CAUTION
⋅ Set "2" in Pr. 0 Brake mode selection of the FR-BU2 to use MT-BR5 type resistor unit.
MCCB MC
R/L1
S/L2
T/L3
Inverter
T
*2
MCCB MC
R/L1 U
S/L2 V
T/L3 W
P/+
N/-
Inverter
*5
Connection of stand-alone option units
ON
T
*2
MC
MC
FR-BR
Motor
U
P TH1
V IM
PR
W
TH2
*3
FR-BU2
PR
P/+ P/+
*1
N/-
N/-
BUE
SD
*3
5m or less
ON OFF CR1
Motor
IM MC
MC
*3
5m
or less
*1
P
P
N
P
*3
PR
BUE PR
SD
Brake unit Resistor unit
FR-BU2 MT-BR5
OFF
*4
A
B
C
CR1
TH1
TH2 *4
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