sh030051g.pdf - 第325页
13 - 24 13. SERVO AMPLIFIERS WI TH A LARGE CAPACITY ( 30k TO 55kW ) POINT Explanations on the following item are the sam e as those for servo amplifiers with 22kW or less. Refer to the section below for details. I/O sign…
13 - 23
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
13.3 Signals and wiring
WARNING
Any person who is involved in wiring should be fully competent to do the work.
Before wiring, turn off the power and wait for 20 minutes or more until the charge
lamp turns off. Then, confirm that the voltage between L
and L is safe with a
voltage tester and others. Otherwise, an electric shock may occur. In addition,
always confirm from the front of the converter unit whether the charge lamp is off
or not.
Ground the converter unit drive unit and the servo motor securely.
Do not attempt to wire the converter unit drive unit and servo motor until they
have been installed. Otherwise, you may get an electric shock.
The cables should not be damaged, stressed excessively, loaded heavily, or
pinched. Otherwise, you may get an electric shock.
CAUTION
Wire the equipment correctly and securely. Otherwise, the servo motor may
operate unexpectedly, resulting in injury.
Connect cables to correct terminals to prevent a burst, fault, etc.
Ensure that polarity ( , ) is correct. Otherwise, a burst, damage, etc. may occur.
The surge absorbing diode installed to the DC relay designed for control output
should be fitted in the specified direction. Otherwise, the signal is not output due to
a fault, disabling the forced stop (EM1) and other protective circuits.
Converter unit
drive unit
RA
DOCOM
DICOM
Control
output
signal
24VDC
Converter unit
drive unit
Control
output
signal
RA
DOCOM
DICOM
24VDC
Use a noise filter, etc. to minimize the influence of electromagnetic interference,
which may be given to electronic equipment used near the converter unit
drive
unit.
Do not install a power capacitor, surge suppressor or radio noise filter (FR-BIF-(H)
option) with the power line of the servo motor.
When using the regenerative resistor, switch power off with the alarm signal.
Otherwise, a transistor fault or the like may overheat the regenerative resistor,
causing a fire.
Do not modify the equipment.
During power-on, do not open or close the motor power line. Otherwise, a
malfunction or faulty may occur.
13 - 24
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
POINT
Explanations on the following item are the same as those for servo amplifiers
with 22kW or less. Refer to the section below for details.
I/O signal connection example Refer to section 3.2.
Signal (device) explanations Refer to section 3.5.
Interfaces Refer to section 3.7.
Treatment of cable shield external conductor Refer to section 3.8.
SSCNET cable connection Refer to section 3.9.
Grounding Refer to section 3.12.
Control axis selection Refer to section 3.13.
The pins with the same signal name are connected in the drive unit.
13.3.1 Magnetic contactor control connector (CNP1)
WARNING
Always connect the magnetic contactor wiring connector to the converter unit. If the
connector is not connected, an electric shock may occur since CNP1-1 and L
11 are
always conducting.
By enabling the control function of the magnetic contactor (parameter No.PA02
1 (initial value)), main
circuit power supply can be shut off automatically when an alarm occurs on the converter unit or the drive unit.
Used to select the output of the external magnet contactor drive signal.
0: No used
1: Used (initial value)
1
Parameter No.PA02
13 - 25
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
(1) Enabling control function of magnetic contactor (parameter No.PA02
1 (initial value))
Connecting the magnetic contactor control connector (CNP1) to the operating coil of the magnetic contactor
enables to control the magnetic contactor.
Converter unit
L
11
L
21
Power supply
MC
NFB
1MC1
2MC2
CNP1
Control circuit
power supply
RA3
RA1 RA2
EM1 OFF/ON
SK
Converter
unit trouble
Servo motor
thermal relay
Operation
-ready
Drive unit
trouble
RA4
Controller
forced stop
Forced stop
MC
L
1
L
2
L
3
(Note)
Note. Stepdown transformer is required when coil voltage of the magnetic contactor is 200V class, and the converter unit and the drive
unit are 400V class.
When the converter unit receives a start command from the drive unit while the magnetic contactor control
connector (CNP1) is connected to the magnetic contactor (refer to section 13.3.2 (1)), CNP1-2 and L
21
conduct in the converter unit. Then the control circuit power is supplied to turn ON the magnetic contactor
and the main circuit power is supplied to the converter unit.
Either when an alarm occurs on the converter unit or the drive unit while the control function of the magnetic
contactor is enabled, or when the forced stop (EM1) of the converter unit or the drive unit is turned OFF, the
switch between CNP1-2 and L
21 in the converter unit is disconnected and the main circuit power supply is
automatically shut off.
To automatically shut off the main circuit power supply by alarm, enable the control function of the magnetic
contactor.
(2) Disabling control function of magnetic contactor (parameter No.PA02
0)
When not connecting the magnetic contactor control connector (CNP1) to the operating coil of the magnetic
contactor, configure the circuit to shut off the main circuit power supply when detecting an alarm since the
main circuit power supply is not automatically shut off even when an alarm occurs on the converter unit or
the drive unit.