Power-On Procedure [G] [B] - Mitsubishi Electric MELSERVO MR-J5 Series User Manual

Power-on procedure [G] [B]

Signals such as output signals may be unstable at power-on.
Power-on procedure
1.
Wire the power supply using magnetic contactors for the main circuit power supply (L1/L2/L3) by referring to the
following. Switch off the magnetic contactor as soon as an alarm occurs.
Page 44 Example power circuit connections
2.
Switch on the control circuit power supply (L11 and 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 and the servo-on command is
transmitted while the main circuit power supply is off, [AL. 0E9 Main circuit off warning] will occur. Turning on the main
circuit power supply stops the warning and starts the operation properly.
3.
When the main circuit power supply is switched on, the servo amplifier will receive the servo-on command after startup
and initial network communication.
The startup time for 1-axis servo amplifiers is 2.5 s to 3.5 s, and the startup time for multi-axis servo amplifiers is 3.5 s to 4.0 s.
Timing chart
Main/control circuit power supply
Base circuit
Servo-on command
(from controller)
Servo-on (RD: Ready)
ALM (Malfunction)
*1 For a linear servo system and a fully closed loop system, this time is 2 s longer.
*2 The time will be longer in the magnetic pole detection of a linear servo motor and direct drive motor.
3 SIGNALS AND WIRING
78
3.3 Explanation of power supply system
Servo-on command accepted
(Startup time +
network initial
communication time)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
No alarm (ON)
Alarm (OFF)
*1
*2
100 ms
5 ms
10 ms 100 ms
5 ms
*2