576
PRACTICAL CIRCUITS
4.9 Vertical, winding lifter
(A700, E700)
4.9.1
Use of relay output option
(A700, E700)
*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
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
U
V
W
R
S
T
Earth (ground)
MCCB
Power
supply
T
*7
F
Motor
BR
B
IM
P
N
F
R
STF
STR
RL
R
H
RH
MRS
RES
SD
MRS
RES
1A
1C
2B
2C
3A
3C
1A
2B
3A
3C
FR-A7AR
Plug-in
option
2C
1C
B
C
B
C
RUN
SU
FU
ALARM
PR
N
P
F
F
3A 3C
2B 2C
1A1C
B C
RUN ALARM
*5
SURT
SU
F
R
FU
H
MC
*8
*3
*2
*1
SURT
M
R
S
B
R
Emergency stop *4
Forward rotation
Reverse rotation
High speed
Forward
rotation
Reverse
rotation
High speed
Brake
Output stop
Operation
check
High speed
Sp
e
e
d
"H" ON
"H" OFF
Low speed
Time
F or R is ON.
Operation pattern
Discharging
resistor
*6
BU
brake unit
Inverter
Brake
*5
R
H
A700
Содержание FR-A700 Series
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