Mitsubishi Electric FR-A700 Technical Manual page 525

4.1.2 The inverter equipped with magnetic contactor on primary side (with FR-BU2
type brake unit)
MCCB
Power
supply
Ready
"OFF" "ON"
PB2 PB1
MC
Forward
Stop rotation
PB3
MC PB5
Reverse
rotation
PB4
Related parameter
Reset selection [Pr. 75]
*1 This magnetic contactor is provided to prevent an automatic restart when power is restored after a power failure. Use the start
signal (ON or OFF of STF, STR) to make a start or stop.
*2 When the power supply is 400V class, install a step-down transformer.
*3 Set [Pr. 75 = 1] "Reset input is enabled only when the fault occurs" to disable resetting of the inverter during normal operation. (If
the inverter is reset during normal operation, the motor coasts to a stop. This setting is to prevent the inverter from resulting in a
fault if the motor is still coasting when the inverter has returned from the reset status.)
common
(common)
*1
MC
T
*2
F
Brake unit
Resistor unit
FR-BU2 FR-BR
M
C
B C TH1 TH2
R
F
F
F
R
R
Hz
Frequency meter
Moving-coil type 1mA
F
R
Frequency setting
potentiometer
2W1k
Inverter
R U
S V
T W
Ground
C
B
P P
N N
FR-BU2
FM
*3
Reset
PB6
SD RES
STF SD
STR
10
2
5
559
PRACTICAL CIRCUITS
Motor
IM
P
PR PR
A
B TH1
C
TH2
THS
FR-BR
4