Mitsubishi Electric MELSERVO-J4 series, Instruction Manual

Page: 102 / 646

100
3 SIGNALS AND WIRING
3.3 Explanation of power supply system
Power-on sequence
The output signal, etc. may be unstable at power-on.
Power-on procedure
1.
Always wire the power supply as shown in the following section using the magnetic contactor with the main circuit power
supply (L1/L2/L3). Configure up an external sequence to switch off the magnetic contactor as soon as an alarm occurs.

Page 83 Connection example of power circuit
2.
Switch on the control circuit power supply (L11/L21) simultaneously with the main circuit power supply or before
switching on the main circuit power supply. If the control circuit power supply is turned on with the main circuit power
supply off, and then the servo-on command is transmitted, [AL. E9 Main circuit off warning] will occur. Turning on the
main circuit power supply stops the warning and starts the normal operation.
3.
The servo amplifier receives the servo-on command in 3 s to 4 s + network initial communication time after the main
circuit power supply is switched on.

Page 100 Timing chart
Timing chart
*1 This range will be "5 s to 6 s + network initial communication time" for the linear servo system and fully closed loop system.
*2 The time will be longer during the magnetic pole detection of a linear servo motor and direct drive motor.
(3 s to 4 s + network initial communication time)
*1
95 ms *2 10 ms 95 ms
Servo-on command accepted
Main circuit
Control circuit
Base circuit
Servo-on command
(from controller)
power supply
ON
OFF
ON
OFF
ON
OFF