ABB S800, Product Manual

Page: 43 / 186

For more information on Optical ModuleBus expansion cables with other length
and performance, see
Opto Connectors and Cables on page 85.
Section 2 Product Description I/O Modules
3BSE015969-600 A 43
I/O Modules
S800 I/O system provides a variety of I/O modules, covering analog and digital
signals of various types, and interfaces for RTDs and TCs of various types.
For positioning applications by using incremental encoders, a special interface unit
is available comprising a complete positioning loop.
The S800 I/O system provides I/O modules with typically 2-32 channels depending
on type and ratings of the individual module.
All I/O modules are supervised at system start-up as well as under normal operation.
The status of an S800 I/O module is indicated with front mounted LEDs; RUN (R),
green, normal operation, FAULT (F), red, when a fault is detected, WARNING (W),
yellow, when a channel fault is detected and OUTPUT SET AS
PREDETERMINED (O), yellow, when the module has lost communication (for
output modules). S800L I/O modules only have one STATUS (S) LED showing
RUN (green) and FAULT (red). All S800 I/O modules (except S800L) can be
replaced with both system power and field power connected.
Digital I/O Modules
All the digital I/O modules have galvanic isolation relative to chassis ground. All
modules have LEDs to indicate channel status (on/off) and the standard set of
TU848 Module Termination Unit for redundant TB840/TB840A, redundant
I/O and individual power supply connections.
TU849 Module Termination Unit for redundant TB840/TB840A,

non-redundant I/O and individual power supply connections.
TU850 Extended Module Termination Unit, 16 I/O channels,

16 current limited sensor/transmitter power outlets

D-sub connectors 25 pin (male).
Table 5. ModuleBus Items (Continued)
Module Type Description