Specifications

Document Ref: Dis4app.doc / Rev 0 25.07.00 Page 14 of 22 Originator MC Checked__AC_
4.0 Software Specifications
4.1 Overview of Engineers Functions
This section describes an overview of the functions available to the end user.
4.1.1 Changing Time and Date
The user can manually set the time and date although this should not normally be required.
The current time is maintained by a dedicated battery when all power removed from the
system. How to set the time and date is described in the user manual.
4.1.2 Delay of Operation of Outputs
The activation of panel outputs (alarm circuit and cause effect) can be delayed upon detection
of an automatic alarm condition to allow for the cause of the alarm to be investigated. The
delay can be programmed for a period of between 1 and 10 minutes. The delay is active for
one period every day, and off for the remainder of the time. This period is user definable and
would typically be during working hours.
The delay is not operated if the alarm condition is initiated by a call point or the evacuate
function. The delay may be overridden by a user function on the panel.
The engineer can set the delay start and end times, set the delay duration and enable or disable
the delay.
4.1.3 Enabling Site Specific Data Changes
All site specific data is held in non-volatile memory. To protect this from errors the memory
is protected by a write enable switch on the motherboard. This switch has to be set to the
write enable position to allow any changes. If the switch is inadvertently left in the enable
position when the changes are complete the panel indicates a fault condition.
4.1.4 Point Configuration
The panel loop devices can be automatically reconfigured through an engineers menu
command. The panel stores each device address and type on configuration. Any changes to
the loop devices are then indicated as a fault. The system configuration can also be printed
out. This shows all devices on a loop with their current status.
The sensitivity of each point can also be changed to allow for ambient conditions. XP95
detectors can have the trip level for fire and alert configured. Discovery devices have the
sensitivity code changed for fire sensitivity and the analogue threshold for alert can be
changed.
Note: For compliance with EN54 the fire sensitivity level must be set to 55. The pre-alarm
value can be set to any value
Note: Do not adjust the fire sensitivity level of the XP95 high temperature heat detector.
This device has an analogue count of 55 at 90 C.