NEX7250 Zone 2 Annunciator
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F17 – Alarm Logic Selection (Standard version)
On standard units that have the communications capability enabled there are only two first-up groups
A and B. On these units Function 17 is used to configure how the communications operate.
In most situations the control of the logic functions of the annunciator are done locally but in some
cases this would be done remotely. The Series 725 Annunciator would simply operate as a dumb
display indicating and flashing in a manner defined by some external equipment. The external
equipment would monitor the alarm points, define which is first-up, which is acknowledged and reset
etc. This function is selected if it required to have the annunciator logic remote from the P725. More
details on this feature are provided in the section on Serial Communications
FEATURE-F17 (STANDARD VERSION)
STATUS LED
Set For Annunciator Logic To Be Locally Controlled
OFF
Set For Annunciator Logic To Be Remote From The P725
ON
F18- Individual Channel Repeat Relay (
Follows Alarm Logic)
A relay set to function F18 will activate on alarm and remain in the alarm state until the alarm has
returned to normal and the associated pushbuttons have been pressed. Please note:- The individual
relay is activated by the alarm logic or when system test is pressed (See function F20).
FEATURE-F18
STATUS LED
Set Channel To Off If This Feature Is Not Required
OFF
Set Channel To Repeat Relay Follows Alarm Logic
ON
F19- Individual Channel Repeat Relay (
Follows Signal Input)
A relay set to function F19 will activate when the signal input is in the alarm state and will
automatically return to normal when the signal input returns to normal. Please note:- The individual
relay is only activated by its signal input and never operates as a result of lamp or system test only
FEATURE-F19
STATUS LED
Set Channel To Off If This Feature Is Not Required
OFF
Set Channel To Repeat Relay Follows Signal Input
ON
F18 And 19- Individual Channel Repeat Relay (
Follows Display)
A relay set to both function F18 and F19 will follow the alarm display. Please note:- The individual
relay operates as a slave of the lamp output signal and when system test or lamp test is pressed.
(The relay cannot be prevented from operating when lamp or system test are pressed (See function
F20).
FEATURE-F18 AND F19
STATUS LED
Set Channel To Off If This Feature Is Not Required
OFF
Set Channel To Repeat Relay Follows Display
ON
