Instruction manual

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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 9.
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-
10B to
70B
MR-J3-
100B to
22KB
MR-J3-
10B1 to
40B1
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-J3-11KB4 to 22KB4
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-J3-700B 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-J3-11KB(4) to 22KB(4)
MR-J3-11KB(4) to 22KB(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 11.13.
P
C
D
Regenerative
brake option
1) MR-J3-350B or less
When using servo amplifier built-in regenerative brake resistor, connect between P-D
terminals. (Wired by default)
When using regenerative brake option, disconnect between P-D terminals and connect
regenerative brake option to P terminal and C terminal.
2) MR-J3-500B
700B
MR-J3-500B and 700B do not have D terminal.
When using servo amplifier built-in regenerative brake resistor, connect P terminal and C
terminal. (Wired by default)
When using regenerative brake option, disconnect P terminal and C terminal and connect
regenerative brake option to P terminal and C terminal.
3) MR-J3-11KB(4) to 22KB(4)
MR-J3-11KB(4) to 22KB(4) do not have D terminal.
When not using the power supply return converter and the brake unit, make sure to connect
the regenerative brake option to P terminal and C terminal.
Refer to Section 14.2 to 14.5.
Supply the following power to L
11
L
21.
Servo amplifier
Power supply
MR-J3-10B
to 22KB
MR-J3-10B1
to 40B1
MR-J3-11B4
to 22KB4
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).
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-J3-350B or less.
For details, refer to Section 11.3 to 11.5.
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.