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3 - 12 3. SIGNALS AND WI RING 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 …

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3. SIGNALS AND WIRING

Note 1 To prevent an electric shock, always connect the protective earth (PE) terminal (terminal marked ) of the servo amplifier to the

protective earth (PE) of the control box.

2. Connect the diode in the correct direction. If it is connected reversely, the servo amplifier will be faulty and will not output

signals, disabling the forced stop (EM1) and other protective circuits.

3. If the controller does not have an forced stop (EM1) function, always install a forced stop switch (Normally closed).

4. When starting operation, always turn on the forced stop (EM1). (Normally closed contacts) By setting "

1 " in DRU

parameter No.PA04 of the drive unit, the forced stop (EM1) can be made invalid.

5. Use MRZJW3-SETUP 221E.

6. For the distance between electrodes of SSCNET

cable, refer to the following table.

Cable Cable model name Cable length

Distance between

electrodes

Standard code inside panel MR-J3BUS M 0.15m to 3m

20m

Standard cable outside panel MR-J3BUS M-A 5m to 20m

Long-distance cable MR-J3BUS M-B 30m to 50m 50m

7. The wiring of the second and subsequent axes is omitted.

8. Up to eight axes (n

1 to 8) may be connected. Refer to section 3.13 for setting of axis selection.

9. Make sure to put a cap on the unused CN1A

CN1B.

10. Supply 24VDC

10% 150mA current for interfaces from the outside. 150mA is the value applicable when all I/O signals are

used. The current capacity can be decreased by reducing the number of I/O points. Refer to section 3.7.2 (1) that gives the

current value necessary for the interface.

11. Trouble (ALM) turns on in normal alarm-free condition. When this signal is switched off (at occurrence of an alarm), the output

of the programmable controller should be stopped by the sequence program.

12. The pins with the same signal name are connected in the servo amplifier.

13. The signal can be changed by parameter No.PD07, PD08, PD09.

14. For the sink I/O interface. For the source I/O interface, refer to section 3.7.3.

15. Devices can be assigned for DI1

DI2 DI3 with controller setting. For devices that can be assigned, refer to the controller

instruction manual. The assigned devices are for the Q173DCPU

Q172DCPU Q173HCPU Q172HCPU and QD75MH .

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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

Main circuit power

supply

Supply the following power to L

1, L2, L3. For the 1-phase 200V to 230VAC power supply, connect

the power supply to L

1, L2, and keep L3 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 L1 L2 L3

1-phase 200V to 230VAC, 50/60Hz L1 L2

1-phase 100V to 120VAC, 50/60Hz L1 L2

Servo amplifier

Power supply

MR-J3-60B4 to 22KB4

3-phase 380V to 480VAC, 50/60Hz L1 L2 L3

Power factor

improving DC

reactor

1) MR-J3-700B or less

When not using the power factor improving DC reactor, connect P

1 and P2. (Factory-wired.)

When using the power factor improving DC reactor, disconnect P

1 and P2, and connect the

power factor improving DC reactor to P

1 and P2.

2) MR-J3-11KB(4) to 22KB(4)

MR-J3-11KB(4) to 22KB(4) do not have P

When not using the power factor improving reactor, connect P

1 and P. (Factory-wired)

When using the power factor improving reactor, connect it to P and P

Refer to section 11.13.

Regenerative

option

1) MR-J3-350B or less

MR-J3-200B4 or less

When using servo amplifier built-in regenerative resistor, connect P(

) and D. (Factory-

wired)

When using regenerative option, disconnect P(

) and D, and connect regenerative option to

P and C.

2) MR-J3-350B4

500B(4) 700B(4)

MR-J3-350B4

500B(4) 700B(4) do not have D.

When using servo amplifier built-in regenerative resistor, connect P and C. (Factory-wired)

When using regenerative option, disconnect P and C, and connect regenerative option to P

and C.

3) MR-J3-11KB(4) to 22KB(4)

MR-J3-11KB(4) to 22KB(4) do not have D.

When not using the power regenerative converter and the brake unit, make sure to connect

the regenerative option to P and C.

Refer to section 11.2 to 11.5.

L11

Control circuit

power supply

Supply the following power to L

11 L21.

Servo amplifier

Power supply

MR-J3-10B to

22KB

MR-J3-10B1 to

40B1

MR-J3-60B4 to

22KB4

1-phase 200V to 230VAC, 50/60Hz L11 L21

1-phase 100V to 120VAC, 50/60Hz L11 L21

1-phase 380V to 480VAC, 50/60Hz L11 L21

Servo motor power

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.

Return converter

Brake unit

When using the power regenerative converter/brake unit, connect it to P and N.

Do not connect to servo amplifier MR-J3-350B(4) 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.

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3. SIGNALS AND WIRING

3.3.2 Power-on sequence

(1) Power-on procedure

1) Always wire the power supply as shown in above section 3.1 using the magnetic contactor with the main

circuit power supply (three-phase: L

, L

, single-phase: L

, L

). Configure up an external sequence

to switch off the magnetic contactor as soon as an alarm occurs.

2) Switch on the control circuit power supply L

, L

simultaneously with the main circuit power supply or

before switching on the main circuit power supply. If the main circuit power supply is not on, the display

shows the corresponding warning. However, by switching on the main circuit power supply, the warning

disappears and the servo amplifier will operate properly.

3) The servo amplifier can accept the servo-on command within 3s the main circuit power supply is

switched on. (Refer to paragraph (2) of this section.)

(2) Timing chart

(3s)

OFF

10ms 95ms95ms

Base circuit

Servo-on command

(from controller)

SON accepted

Main circuit

Control circuit

power

(3) Forced stop

CAUTION

Install an forced stop circuit externally to ensure that operation can be stopped and

power shut off immediately.

If the controller does not have an forced stop function, make up a circuit that switches off main circuit power

as soon as EM1 is turned off at a forced stop. When EM1 is turned off, the dynamic brake is operated to

stop the servo motor. At this time, the display shows the servo forced stop warning (E6).

During ordinary operation, do not use forced stop (EM1) to alternate stop and run. The service life of the

servo amplifier may be shortened.

DICOM

DOCOM

EM1

24VDC

Servo amplifier

Forced stop

(Note)

Note. For the sink I/O interface. For the source I/O interface, refer to section 3.7.3.