sh030051g.pdf - 第344页
13 - 43 13. SERVO AMPLIFIERS WI TH A LARGE CAPACITY ( 30k TO 55kW ) 2) Drive unit When an alarm occurs in the drive unit, the drive uni t turns into the servo o ff but the main circuit power supply is not shut off. There…
13 - 42
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
(b) When controlling magnetic contactor by external sequence
1) Converter unit
When an alarm occurs on the converter unit, the servo-on turns OFF; however, the main circuit power
supply is not shut off. Therefore, shut off the main circuit power supply by the external sequence.
After cancelling the alarm on the converter unit (when an alarm is also occurring on the drive unit
after cancelling the alarm on the drive unit as well), turning ON the reset command enables to
operate again.
b)
Converter unit control
power supply
Drive unit control
power supply
Main circuit
power supply
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Servo-on command
(from controller)
Drive unit alarm
Reset command
(from controller)
Base circuit
OFFONOFF
1.5s
50ms or more
Converter unit alarm
OFFOFF
ON OFF
(3s) (3s)
a) d)
Alarm occurrence
ON
Alarm occurrence
c)
ON
OFF
e)
a) in Figure
b) c) in Figure
d) in Figure
e) in Figure
Even if an alarm occurs in the converter when the drive unit is at servo off, the
drive unit does not detect the alarm.
To deactivate the alarm of the converter unit, turn the power of the converter unit
off, and then on (b)) or make the drive unit servo on (c)). (Refer to section 13.6.1.)
If an alarm occurs in the converter unit when the drive unit is at servo on, the
alarm also occurs in the drive unit and the drive unit becomes servo off.
Shut off the main circuit power supply by the external sequence as soon as an
alarm occurs.
13 - 43
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
2) Drive unit
When an alarm occurs in the drive unit, the drive unit turns into the servo off but the main circuit
power supply is not shut off. Therefore, shut off the main circuit power supply using the external
sequence. Operation can be resumed by turning the reset (RES) ON after the alarm is deactivated in
the drive unit.
OFFONOFF
1.5s
50ms or more
OFF
(3s) (3s)
Alarm occurrence
Converter unit control
power supply
Drive unit control
power supply
Main circuit
power supply
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Servo-on command
(from controller)
Drive unit alarm
Reset command
(from controller)
Base circuit
Converter unit alarm
a) b)
a) in Figure
b) in Figure
When an alarm occurs on the drive unit, shut off the main circuit power supply by
the external sequence.
Turn ON the main circuit power supply while an alarm of the drive unit is
cancelled.
13 - 44
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
(3) Forced stop (EM1) ON/OFF timing chart
(a) When control function of magnetic controller is enabled
1) Converter unit
When the forced stop (EM1) is made valid in the converter unit, the magnetic contactor is turned off
and the main circuit power supply is shut off. The drive unit in operation stops, and Main circuit off
warning (E9) appears. When the forced stop (EM1) is deactivated in the converter unit, the magnetic
contactor is turned on, the main circuit power is supplied, and then the drive unit automatically
resumes the operation.
(3s)
Electromagnetic brake
interlock (MBR)
(10ms)
(3s)
(3s)
ON
OFF
Base circuit
ON
OFF
Servo motor speed
Converter main circuit
off warning
ON
OFF
Main circuit
power supply
ON
OFF
Forced stop (EM1)
Invalid (ON)
Valid (OFF)
Dynamic brake
Dynamic brake
Electromagnetic brake
Electromagnetic brake
Electromagnetic brake
operation delay time
Electromagnetic brake release
(Note)
Note. ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated