3BSE042245R1 CB801 Terminal module

• Use a noise-free earth ground inside the cabinet.

 • Use one star-point to split power for controllers and field devices. 

• If the transformer is used for several controllers, each controller ground has to be wired separately to the starpoint.

 • If a field device that prohibits earth grounding is connected to the system ground, an isolation monitoring device must be used instead of earth grounding. 

• If the field device transformer is physically far away from the controller, earth grounding must still be performed for the controller

Terminals 1 and 2 are assigned differently

 on the XCL5010 and XCL8010 Controllers. ► Make sure that earth ground is connected to the correct terminal according to Fig. 111 and the respective connection diagrams. The XL40, XL50, XL100C, Distributed IO, Smart IO, and the Excel 800 System can share one transformer. The XC5010C Controller always requires its own transformer. If EN60204-1 is applicable for the given type of controller, the system ground has the same potential as one terminal of the power supply.If a system ground of the controller is connected to the earth ground, the available terminals for shielding the C-Bus must not be used. Instead, the C-Bus shield must be connected to the earth ground, but only once per bus connection.

Appendix 2: Remote Communications

 For remote communications with up to three centrals, a modem or ISDN terminal adapter can be connected directly to the modem interface of the XCL8010 Controller Module. Notes Remote communication via modem or ISDN terminal adapter requires firmware version V2.1.0 or higher. XBSi building supervisors are not supported for remote communication The modem interface of the XCL8010 Controller Module accepts a standard modem cable with a female 9-pin connector.

► Connect the cable that is supplied with the modem/ISDN terminal adapter to the modem interface of the XCL8010 Controller.