Delta AH500 - 4.1.4 Connecting a Main Backplane to an Extension Backplane; 4.2 Warning

Chapter 4 Installing Hardware and Wiring
4-9
4.1.4 Connecting a Main Backplane to an Extension Backplane
A main backplane can be connected to an extension backplane through the interface on the left side of the
main backplane, the interface on the left side of the extension backplane, and a Delta extension cable. For a
CPU module or a RTU, a main backplane can be connected to seven extension backplanes at most through
the interfaces on the backplanes. Therefore, if there is a CPU module and there are several RTUs, not only
the CPU module can be connected to seven extension backplanes, but also every RTU can connect to seven
extension backplanes.
There are two ports on an extension backplane. The upper port is used to connect to a superior backplane,
and the lower port is used to connect to an inferior backplane.
4.2 Warning
 An AH500 system only supports the horizontal installation, and a power supply module has to be installed
on the left-most side of a backplane.
 Before a module is installed, please make sure of the size of the module and that of a backplane. To
prevent the misestimate from resulting in insufficient installation space, the size of the connector of a
communication cable, and the room which needs to be reserved have to be taken into account.
 Please make sure that the work environment conforms to the specifications for the products. It is
necessary to take account of the basic temperature/humidity control and the dust/corrosion prevention.
 The electromagnetic interference will result in the wrong action of the whole system. Therefore, users
have to do EMC design carefully. Please refer to Appendix C in this manual for more information related
to EMC standards.
 If the specifications for the components such as screws and washers are noted specifically in the manual,
please use the components conforming to the specifications.
 If a cable is connected to a communication port, please make sure that the connector of the cable is
joined to the port on the module properly.
 A backplane has to be mounted on a plane stably instead of being just set on the plane. After it is
installed, please make sure that it is fixed on the plane.