Moons' MBDV Series - 4 System Configuration and Wiring; Electromagnetic Compatibility (EMC); Ground

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Rev. 2.0
07/27/2023
MBDV Hardware Manual
4 System Conguration and Wiring
4.1 Electromagnetic Compatibility (EMC)
MBDV servo driver uses high-speed switching elements inside, which will
generate high frequency or low frequency during normal operation interference,
and interfere with peripheral equipment through conduction or radiation.
There is also a low-voltage unit inside the servo drive, which is likely to be
disturbed by the noise of the peripheral equipment of the drive. A disturbed signal
may cause the device to behave unexpectedly.
Follow the electromagnetic compatibility regulations described in this manual during installation
and wiring. This product can comply with the following regulations: EN 61800-3
To prevent mutual electromagnetic interference between the servo drive and its peripheral devices,
the following countermeasures can be taken.
• Make sure that the driver and motor are well grounded, and the grounding wire should
preferably be a cable of AWG10 or above.
• Do not use the same sleeve for the main circuit cable and the input / output signal cable /
encoder cable, and do not bundle them together. When wiring, the main circuit cable and the
input / output signal cable / encoder cable should be separated by more than 30cm.
• For input/output signal cables and encoder cables, use twisted-pair wires or multi-core twisted-
pair shielded wires.
• The length of the input and output signal cables is less than 3m, and the encoder cable is less
than 5m.
• Do not use the same power source as an electric welding machine, electric discharge machine,
etc. Even if it is not the same power supply, when there is a high-frequency generator nearby,
connect a noise lter to the input side of the main circuit power supply cable and the control
power supply cable.
4.1.1 Ground
Good grounding treatment can give full play to the e󰀨ect of EMI lter and greatly reduce
interference.
• Must be grounded at a single point in parallel.
• Power extension cable between driver and motor, use cable with shielded mesh.
• The shielding net of the motor power line must be grounded and connected to the ground
terminal of the drive.