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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
L1
L
2
L
3
Supply the following power to L
1, L2, L3. For the 1-phase 200 to 230VAC power supply, connect
the power supply to L
1, L2, and keep L3 open.
Servo amplifier
Power supply
MR-J3-10A to
70A
MR-J3-100A
to 22KA
MR-J3-10A1
to 40A1
3-phase 200 to 230VAC, 50/60Hz L1 L2 L3
Main circuit power 1-phase 200 to 230VAC, 50/60Hz L1 L2
supply 1-phase 100 to 120VAC, 50/60Hz L1 L2
Servo amplifier
Power supply
MR-J3-60A4 to 22KA4
3-phase 380 to 480VAC, 50/60Hz L1 L2 L3
P1
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 and P2. (Factory-wired.)
When using the power factor improving DC reactor, disconnect P
1 and P2, and connect the
power factor improving DC reactor to P
1 and P2.
2) MR-J3-11KA(4) to 22KA(4)
MR-J3-11KA(4) to 22KA(4) do not have P
2.
When not using the power factor improving reactor, connect P
1 and P. (Factory-wired)
When using the power factor improving reactor, connect it to P and 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 P(
) and D. (Factory-wired)
When using regenerative option, disconnect P(
) and D, and connect regenerative option to
P and C.
2) MR-J3-350A4
500A(4) 700A(4)
MR-J3-350A4
500A(4) 700A(4) do not have D.
When using servo amplifier built-in regenerative resistor, connect P and C. (Factory-wired)
When using regenerative option, disconnect P and C, and connect regenerative option to P
and C.
3) MR-J3-11KA(4) to 22KA(4)
MR-J3-11KA(4) to 22KA(4) do not have D.
When not using the power regenerative converter and the brake unit, make sure to connect
the regenerative option to P and C.
Refer to section 12.2 to 12.5.
L11
L
21
Control circuit
power supply
Supply the following power to L
11 L21.
Servo amplifier
Power supply
MR-J3-10A to
22KA
MR-J3-10A1
to 40A1
MR-J3-60A4
to 22KA4
1-phase 200 to 230VAC, 50/60Hz L11 L21
1-phase 100 to 120VAC, 50/60Hz L11 L21
1-phase 380 to 480VAC, 50/60Hz L11 L21