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3 - 2 3. SIGNALS AND WI RING 3.1 Input power supply circuit CAUTION Always connect a magnetic contactor (MC) between the main circuit power supply and L 1 , L 2 , and L 3 of the servo amplifier , and configure the wiring…

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3 - 1
3. SIGNALS AND WIRING
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 15 minutes or more until the charge
lamp turns off. Then, confirm that the voltage between P(
) and N( ) is safe with
a voltage tester and others. Otherwise, an electric shock may occur. In addition,
always confirm from the front of the servo amplifier whether the charge lamp is off
or not.
Ground the servo amplifier and the servo motor securely.
Do not attempt to wire the servo amplifier 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.
RA
DOCOM
DICOM
24VDC
Control output
signal
Servo amplifier
RA
DOCOM
DICOM
24VDC
Control output
signal
Servo amplifier
Use a noise filter, etc. to minimize the influence of electromagnetic interference,
which may be given to electronic equipment used near the servo amplifier.
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.
3 - 2
3. SIGNALS AND WIRING
3.1 Input power supply circuit
CAUTION
Always connect a magnetic contactor (MC) between the main circuit power supply
and L
1, L2, and L3 of the servo amplifier, and configure the wiring to be able to shut
down the power supply on the side of the servo amplifier’s power supply. If a
magnetic contactor (MC) is not connected, continuous flow of a large current may
cause a fire when the servo amplifier malfunctions.
Use the trouble signal to switch main circuit power supply off. Otherwise, a
regenerative transistor fault or the like may overheat the regenerative resistor,
causing a fire.
POINT
Even if alarm has occurred, do not switch off the control circuit power supply.
When the control circuit power supply has been switched off, optical module
does not operate, and optical transmission of SSCNET
communication is
interrupted. Therefore, the servo amplifier on the rear axis displays "AA" at
the indicator and turns into base circuit shut-off. The servo amplifier stops
with starting dynamic brake.
Wire the power supply/main circuit as shown below so that power is shut off and the servo-on command turned
off as soon as an alarm occurs, a servo forced stop is made valid, or a controller forced stop is made valid. A
no-fuse breaker (NFB) must be used with the input cables of the main circuit power supply.
(1) For 3-phase 200V to 230VAC power supply to MR-J3-10B to MR-J3-350B
EM1
NFB MC
L
1
L2
L
3
ALM RA1
P
1
P( )
DICOM
DOCOM
L
11
L21
N( )
D
C
U
V
W
(Note 1)
(Note 2)
CNP1
CNP3
PE
CNP2
U
V
W
2
3
4
1
M
Motor
Encoder
CN2
24VDC
(Note 3)
Encoder cable
(Note 6)
DOCOM
Forced stop
CN3CN3
OFF
Forced
stop
ON
MC
MC
SK
(Note 4)
Alarm
RA1
Controller
forced stop
RA2
Servo amplifier Servo motor
(Note 5)
Trouble
(Note 4)
(Note 5)
3-phase
200 to
230VAC
P
2
3 - 3
3. SIGNALS AND WIRING
Note 1. Always connect P1 and P2. (Factory-wired.) When using the power factor improving DC reactor, refer to section 11.13.
2. Always connect P(
) and D. (Factory-wired.) When using the regenerative option, refer to section 11.2.
3. For the encoder cable, use of the option cable is recommended. Refer to section 11.1 for selection of the cable.
4. If deactivating output of trouble (ALM) with parameter change, configure up the power supply circuit which switches off the
magnetic contactor after detection of alarm occurrence on the controller side.
5. For the sink I/O interface. For the source I/O interface, refer to section 3.7.3.
6. Refer to section 3.10.
(2) For 1-phase 200V to 230VAC power supply to MR-J3-10B to MR-J3-70B
L2
L
3
P
1
P
L
11
L21
N
D
C
P
2
EM1
NFB MC
L
1
1-phase
200 to
230VAC
ALM RA1
DICOM
DOCOM
U
V
W
(Note 1)
(Note 2)
CNP1
CNP3
PE
CNP2
U
V
W
2
3
4
1
M
Motor
Encoder
CN2
24VDC
(Note 3)
Encoder cable
(Note 6)
DOCOM
Forced stop
CN3CN3
OFF
Forced
stop
ON
MC
MC
SK
(Note 4)
Alarm
RA1
Controller
forced stop
RA2
Servo amplifier Servo motor
(Note 5)
Trouble
(Note 4)
(Note 5)
Note 1. Always connect P1 and P2. (Factory-wired.) When using the power factor improving DC reactor, refer to section 11.13.
2. Always connect P and D. (Factory-wired.) When using the regenerative option, refer to section 11.2.
3. For the encoder cable, use of the option cable is recommended. Refer to section 11.1 for selection of the cable.
4. If deactivating output of trouble (ALM) with parameter change, configure up the power supply circuit which switches off the
magnetic contactor after detection of alarm occurrence on the controller side.
5. For the sink I/O interface. For the source I/O interface, refer to section 3.7.3.
6. Refer to section 3.10.