User's Manual

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3. SIGNALS AND WIRING
3.7.2 Terminals
The positions and signal arrangements of the terminal blocks change with the capacity of the servo
amplifier. Refer to section 11.1.
Symbol
Connection Target
(Application)
Description
Supply L1, L2 and L3 with the following power.
For 1-phase 230VAC, connect the power supply to L
1, L2 and leave L3 open.
Servo amplifier
Power supply
MR-J2S-10A to
70A
MR-J2S-100A
to 22kA
MR-J2S-10A1
to 40A1
3-phase 200 to 230VAC,
50/60Hz
L
1 L2 L3
1-phase 230VAC,
50/60Hz
L
1 L2
1-phase 100 to 120VAC,
50/60Hz
L
1 L2
L1, L2, L3 Main circuit power supply
U, V, W Servo motor output
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.
Supply L11 and L12 with the following power.
Servo amplifier
Power supply
MR-J2S-10A to 700A MR-J2S-10A1 to 40A1
1-phase 200 to 230VAC,
50/60Hz
L
11 L21
1-phase 100 to 120VAC,
50/60Hz
L
11 L21
L11, L21 Control circuit power supply
P1
Power factor improving DC
reactor
When not using the power factor improving DC reactor, connect P
1 and P.
(Factory-wired.)
When using the power factor improving DC reactor, disconnect the wiring across
P
1-P2 and connect the power factor improving DC reactor across P1-P.
The power factor improving DC reactor can be used with MR-J2S-11KA to 22KA.
(Refer to section 13.2.4.)
P, C, D Regenerative option
1) MR-J2S-350A or less
When using servo amplifier built-in regenerative resistor, connect P and D.
(Wired by default)
When using regenerative option, disconnect between P-D terminals and
connect regenerative option to P terminal and C terminal.
2) MR-J2S-500A
700A
MR-J2S-500A
700A
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-J2S-11KA to 22KA
MR-J2S-11KA to 22KA 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 13.1.1.
N
Return converter
Brake unit
When using the return converter or brake unit, connect it across P-N.
Do not connect it to the servo amplifier of MR-J2S-200A or less.
Refer to sections 13.1.2 and 13.1.3 for details.
Protective earth (PE)
Connect this terminal to the protective earth (PE) terminals of the servo motor
and control box for grounding.