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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 L1, 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 L1L2L3
1-phase 230VAC,
50/60Hz L1L2
1-phase 100 to 120VAC,
50/60Hz L1L2
L1, L2, L3Main circuit power supply
U, V, W Servo motor output
Connect to the servo moto r 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 L11 L21
1-phase 100 to 120VAC,
50/60Hz L11 L21
L11, L21 Control circuit power supply
P1
Power factor improving DC
reactor
When not using the power factor improving DC reactor, connect P1 and P.
(Factory-wired.)
When using the power factor improving DC reactor, disconnect the wiring across
P1-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 regenerati ve option, disconnect be tween 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 sup ply return converter and the br ake unit, make
sure to connect the regenerative option to P terminal and C terminal.
Refer to section 13.1.1.
NReturn 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.