Contemporary-control-systems CANPCI Manuel d'utilisateur télécharger pdf (Page 5)

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CANbus Transceiver Power

The  takes it transceiver power from the host computer, but

an onboard DC-DC converter provides 1500 volts of galvanic isolation.

The  obtains its transceiver power from the CANbus, but

an onboard circuit is provided to regulate that voltage to a constant 5 V.

DeviceNet Reverse Voltage Protection

The CANPCI-DN is protected from excessive voltage if the DeviceNet

power connections are accidentally reversed. However, this protection

results in the CANPCI-DN ground being about 700 mV above the

CANbus ground.

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Contemporary-control-systems CANPCI Manuel d'utilisateur Page 5