Mitsubishi Electric MELSERVO-J4 MR-J4 A Series - 3.3 Explanation of power supply system

3. SIGNALS AND WIRING
3 - 13
3.3 Explanation of power supply system
3.3.1 Signal explanations
POINT
For the layout of connector and terminal block, refer to chapter 9 DIMENSIONS.
Symbol Connection
destination
(application)
Description
Supply the following power to L1, L2, and L3. For 1-phase 200 V AC to 240 V
AC, connect the power supply to L1 and L3. Leave L2 open.
Servo amplifier
Power supply
MR-J4-10A to MR-
J4-70A
MR-J4-100A to
MR-J4-700A
3-phase 200 V AC to 240 V
AC, 50/60 Hz
L1/L2/L3
1-phase 200 V AC to 240 V
AC, 50/60 Hz
L1/L3
L1/L2/L3
Main circuit power
supply
P3/P4
Power factor
improving DC reactor
When not using the power factor improving DC reactor, connect P3 and P4.
(factory-wired)
When using the power factor improving DC reactor, disconnect P3 and P4,
and connect the power factor improving DC reactor to P3 and P4.
Refer to section 11.11 for details.
P+/C/D Regenerative option
1) MR-J4-500A or less
When using a servo amplifier built-in regenerative resistor, connect P+ and
D. (factory-wired)
When using a regenerative option, disconnect P+ and D, and connect the
regenerative option to P+ and C.
(2) MR-J4-700A
MR-J4-700A does not have D.
When using a servo amplifier built-in regenerative resistor, connect P+ and
C. (factory-wired)
When using a regenerative option, disconnect wires of P+ and C for the
built-in regenerative resistor. And then connect wires of the regenerative
option to P+ and C.
Refer to section 11.2 to 11.5 for details.
Supply the following power to L11 and L21.
Servo amplifier
Power supply
MR-J4-10A to MR-
J4-700A
1-phase 200 V AC to 240 V AC L11/L21
L11/L21
Control circuit power
supply
U/V/W
Servo motor power
supply
Connect to the servo motor power supply terminals (U, V, and W). During
power-on, do not open or close the servo motor power supply. Otherwise, it
may cause a malfunction.
N-
Regenerative
converter
Brake unit
When using a power regenerative converter or brake unit, connect it to P+
and N-.
Do not connect it to the servo amplifier MR-J4-350A or less.
Refer to section 11.3 to 11.5 for details.
Protective earth (PE)
Connect it to the grounding terminal of the servo motor and to the protective
earth (PE) of the cabinet for grounding.
Refer to section 11.3 to 11.5 for details.