The sensor control unit SCU 3000, being the central control unit of
the system, provides electric power to the LIST sensor cable, performs
the cyclic addressing of the connected sensors, reads the
measured temperature values and evaluates the data with reference
to different criteria.
Should a given threshold be exceeded or fallen short of, an alarm is
indicated via the various front panel indicators (LED's, alphanumerical
display, audible alarm) and via a floating contact to a host
computer or other transmission systems.
The area to be monitored by the LIST sensor cable can be divided
into a maximum of 32 alarm sections. By using relay cards REL 3000
and setting software parameters, separate fire, fault, prealarm and
minimum temperature alarm contacts can be activated for each
section. The alarm thresholds for each alarm section, can be defined
The SCU 3000 can either be operated via the keyboard situated on
the front panel or via a serial interface (RS232) attached to a terminal
or a PC / notebook with the respective terminal program.
LISTEC GmbH also offers LISTterm, a software package allowing
the comfortable setting of all system parameters. For visualisation of
system status, lists of messages and temperature values and for a
graphic display of the temperature data, LISTgraph II is available.
The SCU 3000 can be equipped with an internal modem on request