Installation
3-9
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
3.5 Installing the Y link
Configuration with bus modules
The Y link must always be configured with bus modules.
Required components
Rail for configuration with active bus modules (”Rail for module change during
operation”)
2 x IM 157
BM IM/IM bus module
Y coupler
BM Y coupler bus module
You can find the order numbers for these components in Appendix D.
Typical configuration
The figure below shows the typical configuration of a Y link with two power supply
modules. The front doors are open.
PS 307 PS 307 IM 157 IM 157 Y coupler
BM IM/IM
(not visible)
BM Y coupler
(only partially visible)
Rail
Figure 3-3 Typical configuration of the Y link