MOTOROLA MVME340B Relay card

To meet radiated EMC requirements, shield and ground the serial, Command I/O, motor and resolver cables at the drive end. To guarantee maximum high frequency radiated noise reduction, the shields should have 360° termination to ground. Clamp the exposed portion of the shields to the front of the drive with the clamp supplied to terminate. The serial and command I/O cables can be terminated to ground through the D-sub connector, if it provides 360° shield termination. It may also be necessary to add ferrites to the Command I/O and serial cables. It is important to remove the paint from any grounding surfaces. To avoid the risk of cross-talk, keep the motor and resolver cables away from sensitive signal cables such as telephone and intercommunication lines.

Mounting the Drive

The PC800 drives are designed for operation in a cabinet. Follow these installation instructions: 1. Mount the drives vertically inside a cabinet on a flat, solid, electrically conductive, mounting surface (connected to PE (protective earth ground) and capable of supporting the weight of the unit). 2. Remove the paint on the mounting surface over an area extending at least 12 mm (0.5”) from the mounting bolts to achieve good electrical connection over a large area between the drive and grounded mounting surface. 3. Install conductive clamps near the drive on the mounting panel (ground plane) for electrically connecting the outer shield of certain cables (defined below) to the panel.

                                                                        

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