Mitsumi electronic MR-J3- A Manual De Usuario
15 - 37
15. SERVO AMPLIFIERS WITH A LARGE CAPACITY (30k TO 55kW)
15.3.7 Timing chart
(1) Power circuit timing chart
Power-on procedure
(a) Make sure to wire the power supply as shown in above section 15.3.1 using the magnetic contactor with
the main circuit power supply (3-phase: L
1
, L
2
, L
3
). Configure up an external sequence to switch off the
magnetic contactor as soon as an alarm occurs.
(b) In the case where control function of the magnetic contactor for the converter unit is enabled, turn on
control circuit power supply (L
11
and L
21
) for the converter unit and the drive unit at the same time. After
the converter unit and the drive unit are activated, main circuit power supply automatically turns on.
When controlling the magnetic contactor by the external sequence, turn on the control circuit power
supply (L
When controlling the magnetic contactor by the external sequence, turn on the control circuit power
supply (L
11
and L
21
) for the converter unit and the drive unit concurrently with the main circuit power
supply or before switching on the main circuit power supply. However, by switching on the main circuit
power supply, the warning disappears and the drive unit will operate properly.
power supply, the warning disappears and the drive unit will operate properly.
ON
OFF
Main circuit
power supply
power supply
ON
OFF
Servo-on (SON)
(95ms)
ON
OFF
Base circuit
(3s)
(Note 4)
Tb
ON
OFF
Converter unit control
power supply
power supply
ON
OFF
Drive unit control
power supply
power supply
(Note 1)
Electromagnetic
brake interlock (MBR)
brake interlock (MBR)
0r/min
Servo motor speed
0r/min
Position command
(Note 3)
(Note 3)
(Note 2)
ON
OFF
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 the electromagnetic brake interlock (MBR).
ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated
ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated
2. Give a position command after the external electromagnetic brake is released.
3. For the position control mode.
4. “Tb” is a delay time from when the electromagnetic brake interlock (MBR) is turned off until when the base
3. For the position control mode.
4. “Tb” is a delay time from when the electromagnetic brake interlock (MBR) is turned off until when the base
circuit is shut off at servo off. Set Tb using parameter No.PC16.