Block Diagram DC505-FBP, Earthing Concept

The S500-FBP modules have to be included into the global earthing concept of the system. The following schematics will help you to understand the internal conception of the device.

The electrical isolation of the device is realized as follow:

• The isolation between the fieldbus and the internal device circuitry is realized by the FBP plug itself.
• Isolation between the I/O terminals and the I/O-Bus: The I/O-Bus and the processors are powered by the FBP plug, the process inputs and outputs need their own process supply voltage. There is an electrical isolation between these two parts within the modules.
• If it is necessary to have an electrical isolation between the I/O terminals of different I/O modules, several power supply units must be used.
• There is no electrical isolation between the I/O channels of an I/O module.

Blocks diagram DC505-FBP with FBP, earthing concept