Hardware Description And Operation Principal; Contents Of This Chapter; Product Overview; Layout - ABB FDPI-02 User Manual

Hardware description and operation principal 9

2
Hardware description and operation
principal

Contents of this chapter

This chapter briefly describes the operation principle and layout of the interface unit.

Product overview

FDPI-02 diagnostics and panel interface is used for branching the RS-485 panel bus
and chaining a control panel or PC tool to several drives.
The interface unit provides a feed-through connection between a control unit and an
F-type option module. It is compatible with the ZCU-..., BCU-... and UCU-... control
units. The interface unit is installed in an option slot of the control unit. A small F-type
option module can then be installed on top of the interface unit.
The interface unit has one RJ-11 and two RJ-45 connectors. The RJ-11 connector is used
for connecting the control unit. The RJ-45 connectors support a daisy chain bus for
connecting a PC or a control panel (simultaneous control panel and PC communication
is not allowed).
Bus termination is required to prevent signal reflections from the bus cable ends. The
interface unit has a bus termination switch for the panel/PC cable. If the unit is the
first or the last unit of the bus, the termination switch must be in the TERMINATED
position. If a control panel is connected to the bus end, it terminates the bus and only
the other end must be terminated by termination switch S1. For a termination example,
see section Panel bus termination and chaining examples (page 28).

Layout

The following figures show the layout of the interface unit.