Doc No. FM0410 issue N Page 14
10. NETWORK TERMINATION BOARD
FIRE ALARM INPUT
(issue “A
-
D” A00415 Amp Board & V1.0
x Firmware)
When 0V is
applied to input 4 a “999” fire alarm call will be reported via the current operating mode. If input 4 is still
active when this call has been answered and cleared a fire tone will start to sound through all intercoms (unless disabled
in the General Set-up programming). The fire tone will continue until input 4 is removed, i.e. when the buildings Fire
Alarm Panel is reset. If the system is operating in onsite mode it is possible to stop the fire tone and resume normal
operation before the Fire Panel is rese
t by lifting the handset and pressing the “5” key in the gap between the bursts of
tone. The fire alarm call will not re-report until the 0V signal is removed and reapplied to input 4. Note, the fire tone
cannot be stopped (or parked) via Local or Remote Offsite mode - the Fire Alarm Panel must be reset. Relay output 2 can
be set to energise for the duration input 4 is applied; this is normally used to override the main entrance door electric lock
release allowing the Emergency Services to enter.
FIRE ALARM INPUT
(issue “E” A00415 Amp Board onwards & V2.0
x Firmware onwards)
When 0V is applied to input 4 a “999” fire alarm call will be reported via the current operating mode
and at the same time
a fire tone will start to sound through all intercoms (unless disabled in the General Set-up programming). The fire tone
will continue until input 4 is removed, i.e. when the buildings Fire Alarm Panel is reset. All other Fire Alarm related
features are as V1.0 described above.
OUTPUTS
There are 4 N/O clean contact outputs which can be programmed for a number of functions. The contacts are rated at
24V DC 500mA.
Output No.
Function
CPU LED
1
Any Alarm Output or DTMF Relay 1
LED 4
2
Fire Alarm Output or DTMF Relay 2
LED 5
3
BT Line Selector or DTMF Relay 3
LED 6
4
BT Line Fault or DTMF Relay 4
LED 7
When an output is activated the relevant LED4-7 will illuminate on the main CPU board.
Note; all outputs can be activated with DTMF keys or set as system outputs - see the Advent xt Programming Manual
(Tynetec Doc No. FM0411).
EXTERNAL PSU INPUT
There are screw connectors provided for additional 12V & 24V DC power supplies if the network current requirement
exceeds that of the system SMPSU. The power rating and standby battery capacity of additional PSU’s must be calculated
accordingly. Consideration should also be given to the power conductors on the site wiring network to ensure they are
capable of carrying the increased current with minimum voltage drop. Fuses F1-F6 will need to be up-rated in line with
the increased current capacity.
FUSES
There is fuse protection on the 12V and 24V DC supplies on each of the 3 network connections. The LED alongside each
fuse will extinguish if a fuse is blown.
Fuse No.
Rating
Function
LED
F1
1.6A
24V Network 1
LED 3
F2
1.6A
12V Network 1
LED 4
F3
1.6A
24V Network 2
LED 5
F4
1.6A
12V Network 2
LED 6
F5
1.6A
24V Network 3
LED 7
F6
1.6A
12V Network 3
LED 8
If only one network leg is connected it is acceptable to increase both fuse ratings to 3A.
