Schneider Electric 840 USE 106 0 manual Adding Hot

Installation

Adding Hot	To add Hot Standby capability to an existing Quantum system, you must install a
Standby	second backplane with modules identical to those in the original backplane. Keep
Capability to an	the following requirements in mind:
Existing System
	You must remove any local I/O and distributed I/O networks from the original
	backplane, because they will not be supported at switchover.
	The diagram below shows that local I/O must be removed.

Converting to You need backplanes with at least four slots.

Hot Standby

SystemThe components in both backplanes must meet the version requirements listed. You must install a splitter and a self-terminating F adapter between the original RIO head processor and the RIO network. A second cable runs from the splitter to the Standby RIO head processor, through a second self-terminating F adapter.

In general, you may follow the installation directions in this Chapter. However, as a precaution, you should first stop the controller and disconnect power to the system.

66 840 USE 106 00 January 2003