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In servo system, do you know what should be paid attention to when grounding servo drive?
Eight points to note for grounding of servo drives are as follows:
? The correct shielding connection is at a reference potential point inside the circuit, which depends on whether the noise source and the receiver are both grounded or floating.
? Make sure that the shield is grounded at the same point so that the earth current does not flow through the shield.
? Avoid a variety of connection to the earth generated by the ground loop is easily affected by noise and generate current at different reference points.
? When the AC power supply is not isolated from the DC bus of the driver, do not connect the non-isolated port or signal of the DC bus to the ground, which may cause device damage and personal injury.
? Avoid servo drive to external power supply, will directly affect the work of the controller and the driver.
? The common voltage of AC is not to the ground. There may be a high voltage between the DC bus and the ground. Direct grounding is prohibited.
? In the servo system, the public ground and the earth must be connected together at the signal end.
? In order to keep the command reference voltage constant, to the servo driver signal ground to the controller signal ground.