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3. SIGNALS AND WIRING
3.3 Explanation of power supply system
3.3.1 Signal explanations
POINT
For the layout of connector and terminal block, refer to outline drawings in
chapter 10.
Abbreviation
Connection Target
(Application)
Description
Supply the following power to L
1
, L
2
, L
3
. For the 1-phase 200V to 230VAC power supply,
connect the power supply to L
1
, L
2
, and keep L
3
open.
Servo amplifier
Power supply
MR-J3-
10A to
70A
MR-J3-
100A to
22KA
MR-J3-
10A1 to
40A1
3-phase 200V to 230VAC, 50/60Hz
L
1
L
2
L
3
1-phase 200V to 230VAC, 50/60Hz
L
1
L
2
1-phase 100V to 120VAC, 50/60Hz
L
1
L
2
Servo amplifier
Power supply
MR-J3-60A4 to 22KA4
3-phase 380V to 480VAC, 50/60Hz
L
1
L
2
L
3
L
1
L
2
L
3
Main circuit power
supply
P
1
P
2
Power factor
improving DC
reactor
1) MR-J3-700A or less
When not using the power factor improving DC reactor, connect P
1
-P
2
. (Factory-wired.)
When using the power factor improving DC reactor, disconnect the wiring across P
1
-P
2
and
connect the power factor improving DC reactor across P
1
-P
2
.
2) MR-J3-11KA(4) to 22KA(4)
MR-J3-11KA(4) to 22KA(4) do not have P
2
terminal.
When not using the power factor improving reactor, connect P
1
-P. (Factory-wired)
When using the power factor improving reactor, connect it across P-P
1
.
Refer to section 12.13.
P
C
D
Regenerative
option
1) MR-J3-350A or less MR-J3-200A4 or less
When using servo amplifier built-in regenerative resistor, connect between P-D terminals.
(Wired by default)
When using regenerative option, disconnect between P-D terminals and connect
regenerative option to P terminal and C terminal.
2) MR-J3-350A4 500A(4) 700A(4)
MR-J3-350A4 500A(4) 700A(4) do not have D terminal.
When using servo amplifier built-in regenerative resistor, connect P terminal and C terminal.
(Wired by default)
When using regenerative option, disconnect P terminal and C terminal and connect
regenerative option to P terminal and C terminal.
3) MR-J3-11KA(4) to 22KA(4)
MR-J3-11KA(4) to 22KA(4) do not have D terminal.
When not using the power supply return converter and the brake unit, make sure to connect
the regenerative option to P terminal and C terminal.
Refer to section 12.2 to 12.5.
Supply the following power to L
11
L
21.
Servo amplifier
Power supply
MR-J3-10A
to 22KA
MR-J3-10A1
to 40A1
MR-J3-60A4
to 22KA4
1-phase 200V to 230VAC, 50/60Hz
L
11
L
21
1-phase 100V to 120VAC, 50/60Hz
L
11
L
21
1-phase 380V to 480VAC, 50/60Hz
L
11
L
21
L
11
L
21
Control circuit
power supply
U
V
W
Servo motor
power
Connect to the servo motor power supply terminals (U, V, W). During power-on, do not open or
close the motor power line. Otherwise, a malfunction or faulty may occur.
N
Return converter
Brake unit
When using return converter/brake unit, connect to P terminal and N terminal.
Do not connect to servo amplifier MR-J3-350A or less.
For details, refer to section 12.3 to 12.5.
Protective earth
(PE)
Connect to the earth terminal of the servo motor and to the protective earth (PE) of the control
box to perform grounding.
Содержание MELSERVO MR-J3 A Series
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