sh030051g.pdf - 第327页

13 - 26 13. SERVO AMPLIFIERS WI TH A LARGE CAPACITY ( 30k TO 55kW ) 13.3.2 Input power supply circuit WARNIN G Insulate the connections o f the power supply terminals. Not do ing so can cause an electric shock. Magnetic …

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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.
13 - 26
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
13.3.2 Input power supply circuit
WARNING
Insulate the connections of the power supply terminals. Not doing so can cause an
electric shock.
Magnetic contactor wiring connector on the converter unit CNP1.
Unattached state may cause an electric shock.
CAUTION
Always, connect the magnetic contactor (MC) between the main circuit power
supply and L
1, L2, and L3 of the converter unit, and configure to shut off the power
supply on the side of the converter unit power supply. If the magnetic contactor
(MC) is not connected, a large current keeps flowing and may cause a fire when
the converter unit or the drive unit malfunctions.
Use the trouble signal to switch power off. Otherwise, a regenerative transistor fault
or the like may overheat the regenerative resistor, causing a fire.
Connect the power supply phases (U, V, W) of the servo amplifier and servo motor
correctly. Not doing so can cause the servo motor to run abnormally.
Do not connect a 3-phase 200V power supply or a 3-phase 400V power supply
directly to the servo motor. Doing so can cause a failure.
POINT
Magnetic contactor control connector (CNP1) of the converter unit can be
made valid or invalid with parameter No.PA02 of the converter unit. Refer to
section 13.3.1 and 13.3.6 for details of CNP1 and section 13.5 for the
parameter settings.
When using the external dynamic brake, refer to section 11.6 and 13.9.3.
13 - 27
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
(1) When magnetic contactor control connector (CNP1) is made valid (factory-set)
POINT
The converter unit controls the main circuit magnetic contactor.
Refer to section 13.3.7 (1) for the power circuit timing chart, section 13.3.7 (2)
for the alarm occurrence timing chart, section 13.3.7 (3) for the forced stop
(EM1) timing chart.
Always connect a protection coordination cable (MR-J3CDL05M) and a
termination connector (MR-J3-TM). When they are not connected properly,
the servo-on may not be turned ON.
For the control power supplies of the converter unit and the drive unit, always
turn ON or OFF at the same time.
(a) 200V class (MR-J3-DU30KB
MR-J3-DU37KB)
(Note 4)
Power
supply
Regenerative
option(Note 1)
Regenerative
option(Note 1)
Regenerative
option(Note 1)
MC
(Note 3)
Termination
connector
MR-J3-TM
(Option)
L
L
MR-J3CDL05M
cable
Converter unit Drive unit
L1
L
2
L
3
L11
L
21
NFB
1MC1
2MC2
CN40 CN40A
CN2
Dynamic
brake
(Option)
Servo
motor
thermal
relay
RA3
OHS1
BW
BV
BU
M
OHS2
V
U
W
CN40B
24VDC
power supply
V
U
W
Servo motor
NFB
TE2-2
L
L
TE2-1
C
P
1
P
2
Power factor improving
DC reactor (Option)
(Note 2)
L
11
L21
G4G3
PC
G4G3
PC
SR
G4
G3
PC
Cooling fan Cooling fan Cooling fan
SRSR
CNP1
CN1
1
DICOM
5
DOCOM
6
DICOM
RA22ALM
7EM1
9
DOCOM
CN3
EM1
3
20
SDPlate
DICOM
10
ALM15
DOCOM
5
DICOM
RA1
RA3RA1 RA2
EM1 OFF/ON
SK
Converter
unit
Motor
thermal relay
Operation
-ready
Drive
unit
RA4
Controller
forced stop
(Note 3)
Forced stop
MC
Cooling fan
Encoder cable
(Note 3)
24VDC
24VDC
3-phase
200 to 230VAC
50/60Hz
Encoder
Note 1. For the MR-RB137. For the MR-RB137, three units are used as one set (permissible wattage: 3900W).
2. When using the Power factor improving DC reactor, disconnect the short bar across P
1-P2.
3. Make up a sequence that turns off the drive unit forced stop (EM1) and the converter unit forced stop (EM1) at the same time.
4. For specifications of cooling fan power supply, refer to section 13.3.8.