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3. SIGNALS AND WIRING
3.5.2 Terminals
The positions and signal arrangements of the terminal blocks change with the capacity of the servo
amplifier. Refer to section 10.1.
Symbol
Connection Target
(Application)
Description
Supply L
1
, L
2
and L
3
with the following power.
For 1-phase 230V, connect the power supply to L
1
/L
2
and leave L
3
open.
Servo amplifier
Power supply
MR-J2S-10B to
70B
MR-J2S-100B
to 22K
MR-J2S-10B1
to 40B1
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
L
1
, L
2
, L
3
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.
P
1
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
-P and connect the power factor improving DC reactor across P
1
-P.
Refer to section 11.2.4.
Supply the following power to L
11
, L
21
.
Servo amplifier
Power supply
MR-J2S-10B to 700B MR-J2S-10B1 to 40B1
1-phase 200 to 230VAC,
50/60Hz
L
11 L21
1-phase 100 to 120VAC,
50/60Hz
L
11 L21
L
11
, L
21
Control circuit power supply
P, C, D Regenerative option
1) MR-J2S-350B or less
When using servo amplifier built-in regenerative resistor, connect between P
and 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-J2S-500B and 700B
MR-J2S-500B and 700B 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.
Refer to section 12.1.1.
3) MR-J2S-11KB to 22KB
MR-J2S-11KB to 22KB 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 12.1.1.
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-J2S-200B or less.
For details, refer to section 12.1.2 to 12.1.3.
Protective earth (PE)
Connect this terminal to the protective earth (PE) terminals of the servo motor
and control box for grounding.