Mitsubishi Electric FR-A700 Technical Manual page 542

4.9 Vertical, winding lifter
4.9.1 Use of relay output option
MCCB
Power
supply
Emergency stop *4
Forward rotation
Reverse rotation
High speed
F
SURT
*5
R
FU
3A 3C
*1
High speed
"H" ON
F or R is ON.
Operation pattern
*1 The brake is opened after terminal MRS is turned OFF by the start signal and the FU signal is then output from the
inverter. At a stop, the brake is designed to be closed as soon as the motor has fully decelerated (FU signal).
*2 Connect terminals B-C to the brake circuit to always close the brake when an inverter fault occurs.
*3 The brake should not be opened except when the inverter provides normal output (RUN signal is ON).
*4 Install an emergency stop switch as provision against a failure. In case of an emergency, the motor is stopped by the
mechanical brake without relying on the electric braking of the inverter.
*5 Whether acceleration/deceleration is completed within the given time is checked. If not completed, it is judged that the
inverter is faulty and the brake is closed.
*6 A700 The FR-A700 series 7.5K or less has a built-in brake resistor, but the above diagram shows a case where an
external brake is required.
*7 When the power supply is 400V class, install a step-down transformer.
*8 It is recommended to install a magnetic contactor in the primary side to prevent the discharging resistor from overheat/
burnout if the regenerative brake transistor is damaged due to the thermal capacity shortage of the discharging resistor,
an excessive regenerative brake duty etc.
A700 E700
(A700, E700)
T
*7
F
R
F
F
R
H
RUN ALARM
B
1A1C B C
R
*3 *2
M
R
S
SURT
SU
2B 2C
*5
Low speed
Time
"H" OFF
A700 E700
(A700, E700)
MC
*8
F
R
Forward
rotation
Reverse
rotation
H
H
High speed
MRS
Brake
MRS
RES
RES
Output stop
SD
Operation
check
576
PRACTICAL CIRCUITS
BR
Inverter
R U
S V
T W
Discharging
resistor
STF P
STR
N
RL
RH Earth (ground)
Plug-in
option
FR-A7AR
RUN 1A 1A
1C 1C
SU 2B 2B
2C 2C
FU 3A 3A
3C 3C
ALARM B B
C C
Brake
B
IM
Motor
*6
BU
brake unit
PR
P
N