Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
5 - 22
(2) MR-J4-DU_A_
(a) Power-on procedure
1) Always use a magnetic contactor for the main circuit power supply wiring (L1/L2/L3) as shown in
above section 4.1. Configure an external sequence to switch off the magnetic contactor as soon
as an alarm occurs.
2) When enabling magnetic contactor drive output, turn on the control circuit power supplies
(L11/L21) of the resistance regeneration converter unit and the drive unit simultaneously. The
main circuit power supply is automatically turned on after the resistance regeneration converter
unit and drive unit are started.
When using an external sequence to control the magnetic contactor, turn on the control circuit
power supplies (L11/ L21) of the resistance regeneration converter unit and drive unit
simultaneously with the main circuit power supply or before turning 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 drive
unit will operate properly.
(b) Timing chart
ON
OFF
Main circuit
power supply
ON
OFF
SON (servo-on)
(95 ms)
ON
OFF
Base circuit
(3 s)
(Note 4)
Tb
ON
OFF
ON
OFF
MBR
(Electromagnetic
brake interlock)
0 r/min
Servo motor
speed
0 r/min
Position command
(Note 3)
(Note 2)
ON
OFF
(Note 1)
Drive unit
Control circuit
power supply
Resistance regeneration
converter unit
Control circuit
power supply
Note 1. When setting up an electromagnetic brake at customer's side, make up a sequence which will operate
the electromagnetic brake as follow using MBR.
ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated.
2. Give a position command after the external electromagnetic brake is released.
3. This is in position control mode.
4. In [Pr. PC16 Electromagnetic brake sequence output], set a delay time (Tb) from MBR off to base circuit
shut-off at a servo-off.
Summary of Contents for Melservo MR-J3-100B
Page 17: ...8 MEMO ...
Page 18: ...Part 1 Summary of MR J3 MR J3W Replacement 1 1 Part 1 Summary of MR J3 MR J3W Replacement ...
Page 145: ...Part 3 Review on Replacement of MR J3 _B_ with MR J4 _B_ 3 48 MEMO ...
Page 195: ...Part 4 Replacement of MR J3W _B with MR J4W2 _B 4 50 MEMO ...
Page 277: ...Part 5 Review on Replacement of MR J3 DU_ with MR J4 DU_ 5 82 MEMO ...
Page 278: ...Part 6 Common Reference Material 6 1 Part 6 Common Reference Material ...
Page 418: ...Part 7 Review on Replacement of Motor 7 1 Part 7 Review on Replacement of Motor ...
Page 564: ...Part 9 Startup Procedure Manual 9 1 Part 9 Startup Procedure Manual ...
Page 567: ...Part 9 Startup Procedure Manual 9 4 MEMO ...
Page 589: ...L NA 03127ENG C ...