Servo driver Noise filter Upper control device Noise filter DC power source Note: For grounding, wire of 1.5mm 2 or above shall be used as far as possible (most preferably copper braided wire) Grounding busbar 2.8.2 Precautions for installation of an EMI filter To maximize the effect of the EMI filter suppressing disturbance of the servo driver, in addition to installation and wiring of the servo driver in accordance with the Manual, the following precautions shall be observed: 1) The servo driver and the EMI filter must be installed on the same well-grounded metal plane. 2) All wiring cables shall be as short as possible.
3) The metal housing of the servo driver and the EMI filter must be reliably connected to the metal plane, and the contact area between the two shall be as large as possible. 4) The input and output wiring cables of the noise filter shall be laid separately, and may not be put into the same sleeve or trunking, nor be bound together. 5) The ground wire and output wire of the noise filter shall be separately arranged. 6) The noise filter shall have a ground wire separately connected to the ground busbar and shall not be shared with other ground wires.
2.8.3 Motor cable selection and installation precautions Whether motor cable is properly selected and installed matters to whether the EMI filter can render the maximum disturbance suppression effect. Attention shall be paid to the following points: 1) Cable with isolating copper mesh (double isolating layers more preferred) shall be used. 2) Isolating copper meshes at both ends of the motor cable shall be grounded with the shortest distance and the maximum contact area. 3) The isolating copper meshes of the motor cable shall be correctly connected to the metal plane, with U-shaped metal piping brackets used to fix the copper meshes on both ends onto the metal plane.
2.8.4 Grounding Grounding shall be done following the requirements below. Proper grounding may prevent maloperation resulted from electromagnetic disturbance. ● Single-point grounding is required. ● The grounding resistance shall be less than 100Ω. ● When the servo motor is mutually isolated from the machine, directly ground the servo motor. ● The PE terminal of the servo motor must be connected to the ground terminal of the servo driver . ● The ground terminal “ ” of the servo driver must be grounded. 18 Technical Manual for EA190 Series Servo Driver V100