How to do a correct grounding of TM7 CANopen Bus coupler?

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We have to use the recommended mounting plate (TM7ACMP), it connects via both screws to the internal functional EARTH potential, that is used for diverting any interference voltage.

backplate grounding

There is no connection of internal ground (electronic ground e. g. CAN_GND) to EARTH (module backplane or DIN rail).
CAN_SHLD (shielding) is connected to EARTH (module backplane).
CAN_GND (common internal potential of CAN circuit) is connected to EARTH only by a capacitor and a varistor for EMI reasons.

Pins description of connectors

CAN_GND of master has to be connected to CAN_GND of slave. Will be done by appropriate cable. As well as shieldings will be connected.

internal connections

Released for:Schneider Electric India

Published on:18/11/2024Last Modified on:18/11/2024

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Modicon TM7

Range:

Modicon TM7