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

Power-on procedure [A]

The voltage of analog monitor output, the output signal, or others 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 main circuit power supply is not on, the display shows the
corresponding warning. However, the warning will disappear and the servo amplifier will operate properly if the main
circuit is powered on.
3.
The servo amplifier receives the SON (Servo-on) 2.5 s to 3.5 s after the main circuit power supply is powered on.
4.
Once RES (Reset) is turned on, the base circuit is shut off and the servo motor shaft coasts.
Timing chart
Main/control circuit power supply
Base circuit
SON (Servo-on command)
RES (Servo-on command)
RD (Ready)
No alarm (ON)
ALM (Malfunction)
Alarm (OFF)
*1 For a linear servo system and a fully closed loop system, this time is "4.5 s to 5.5 s".
*2 The time will be longer in the magnetic pole detection of a linear servo motor and direct drive motor.
Servo-on command accepted
*1
(2.5 s to 3.5 s)
ON
OFF
ON
OFF
10 ms
ON
OFF
100 ms
ON
OFF
5 ms
ON
OFF
(2.5 s to 3.5 s)
10 ms
*2 *2
100 ms
10 ms 5 ms
3.3 Explanation of power supply system
*2
100 ms
10 ms 5 ms 10 ms
3 SIGNALS AND WIRING
3
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