RTK Series 725 Annunciator
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3.9 Pushbutton / Programming Module Options
The pushbutton/programming module is normally integrally mounted within the annunciator however
if required it can be supplied as a stand alone item suitable for panel mounting, DIN-rail mounting or
wall mounting.
3.10 Fully Field Programmable
In addition to controlling the alarm sequence the pushbutton module is also used as a configuration
tool to programme the required features on the annunciator. To access the programming functions
the pushbutton fascia must be hinged down to reveal a configuration switch (labelled CONF) located
on the inner face of the assembly. Once the unit is in the CONF mode the user is able to enable or
disable a range of pre-defined features and options. The dual function pushbutton assembly allows
the user to enable any of the 25 embedded features on a per channel basis without having to remove
the power to the annunciator or to remove light-boxes, back-planes or alarm cards.
All programmed information is stored in EEPROM, with a minimum 20-year retention, giving
repeatability and reliability without the need for battery backup.
Note:- Alarm sequences will operate in accordance with any of the standard sequences defined in
the ISA publication "Alarm Sequences and Specifications S18.2 - 1979 (R1985)"
3.11 Expandability Using SI/O Cards
System expansion cards type SI/O are used in applications where either a single pushbutton /
programming module is linked to a number of alarm annunciators or when large cabinets require
additional power distribution terminals to evenly distribute the logic power. In addition to the logic
power terminals the SI/O card is also equipped with IN and OUT ribbon cable sockets to allow ribbon
cable and connectors to be used to link common control functions between annunciators.
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