Mitsubishi Electric MELSERVO-J2-Super Series Instruction Manual page 121

4. SIGNALS AND WIRING
Since no source output is provided, configure the following circuit.
For use of internal power supply
Servo amplifier
24VDC
VDD
COM
ALM,
etc.
SG
Load
If the diode is not connected
as shown, the servo amplifier
will be damaged.
For use of external power supply
Servo amplifier
24VDC
VDD
COM
ALM,
etc.
SG
4 - 16
Do not connect
VDD-COM.
24VDC
Load
10%
If the diode is not connected
as shown, the servo amplifier
will be damaged.