Nexus 1-8 Loop (A1557)
Analogue Addressable Control Panel
User Instructions
Note: You must turn the ACCESS CONTROLS keyswitch from 0 to 1 before you can
operate any controls
Fire
The RED main fire LED and - if a zonal display is fitted - the zonal fire indicator will pulse, the
alarms will sound and the internal buzzer will operate. The LCD display will indicate the exact
location of the device.
Locate the source of the fire (an LED will be visible on the detector which has been activated).
To silence the alarms, turn the keyswitch from 0 to 1 and press SILENCE ALARMS. The alarms will
silence and the RED LEDs will change to a steady illumination.
When the fire has been extinguished, press SYSTEM RESET. Should the system have activated for
no apparent reason, please note which detector has been activated before pressing the SYSTEM
RESET button and contact your service engineer.
If necessary, the alarms can be resounded by pressing EVACUATE. To silence the alarms during an
evacuate condition, press SILENCE ALARMS. To clear fire indication, press RESET.
A second alarm condition will re-initiate a full alarm condition. The LCD display will then show the
location of the second device operated. Any further device operations will cause the MORE
MESSAGES LED to flash. Press the SCROLL MESSAGES button to reveal locations.
Fault
Call your service engineer immediately.
The fault buzzer will sound and the appropriate fault LED will pulse. The LCD display will also
indicate fault details. Press SILENCE BUZZER to silence the fault buzzer. When the fault condition
has cleared, press RESET FAULTS.
WARNING: This equipment contains dangerous voltages. To prevent electric shock, do not open
the panel door. No user-serviceable parts inside - for servicing, contact suitably qualified
personnel.
Evacuate
When the panel is in standby (normal) mode, the alarms may be sounded by pressing EVACUATE.
Press SILENCE ALARMS and RESET SYSTEM to return the panel to standby.
Override Delay
When a fire alarm occurs and the Delay On LED is flashing, the fire alarm sounders will not operate
until the time delay has timed out. To override this time delay, press the button marked Override
Delay.
Document Ref: Nex8user.doc/Rev0
09.07.00
Page 1 of 4
Originator MC Checked by AC__ Approved by JBJ__
Test Display
The TEST DISPLAY button should be operated every week as part of the system test routine for
checking correct operation of the LCD display, panel buzzer and LEDs. Press momentarily to operate.
Test Routine
This should be carried out in accordance with BS5839 Part 1. Refer to Fire Alarm System Logbook.
User Facilities
Note: You must turn the keyswitch from 0 to 1 before you can operate any controls
The following user facilities are available via the Engineer’s Menu screen.
(i)
Level 1 Access Code
1278
1:SET TIME/DATE
2:ISOLATE DEVICES
3:EDIT DEV/LOGO TEXT
(ii)
Single device, range, all (de-isolate only), status
Via PC or special QWERTY keyboard
Accessing Engineer’s Menu
4
Step 1 - Press
0 9
P a n
- - - - - - - ENT ER CO
:
e
D
ENGINEER to reveal the following:
0 4 : 2 6
l
N a m e
- - - - - - - - - - E ,
P RE S S
*
Step 2 - Press Engineer’s code
S E L ECT L EV
1 : S E T T I ME
2: : I S O L A T E
* NEXT P AG
Step 3 - Press
*
1
2
7
8
and then
*
to reveal the following:
E L 1 O P T I ON
/ DAT E
DEV I C E S
E
# QU I T
to scroll through the Engineer’s Menu.
NOTE: No facility is accessible unless it is shown on-screen.
Step 4 - Select the required engineer’s facility by pressing the corresponding number button.
(iii)
Setting Time & Date
At Step 4 within the Engineer’s Menu (see section ii above), select 1:SET TIME/DATE.
S E L ECT L EVE L 1
ENT E R T I ME
h h
#
BACKS P ACE
Document Ref: Nex8user.doc/Rev0
O P T I ON
mm s s
*
09.07.00
ENT ER
Page 2 of 4
Originator MC
Checked by _AC_
Time is entered as two digits for each of the hours, minutes and seconds; eg 8am is 08:00:00. The
clock starts, at the time set, when the * ENTER key is pressed.
The date may then be entered as two digits for each of the day, month and year for example, the 3rd of
August 1997 is 03:08:97. It is not necessary to press the ENTER key after entering the date, the
system automatically returns to normal operation.
(iv)
Isolate
At Step 4 within the Engineer’s Menu (see section ii above), select 2:ISOLATE DEVICES.
Within this sub-menu, the following four options are available. Use the * to view these options (if
not currently displayed). Select the required option by pressing the corresponding number button and
then follow the on-screen instructions for each option.
I S
1 .
2 .
* N
O
S
P
X
LAT I O
EN S OR
ANE L
T P AG
N F AC I L I TY
S
I NPUT S
E
# QU I T
Enables the engineer to isolate/de-isolate loop devices
Enables engineer to isolate/de-isolate programmable panel inputs
To select next page (printer isolate)
Selecting Option 1. SENSORS reveals the following screen:
S ENS OR
I S O / DE
1 . S I NGL E
2 . R
3 . R EAD
4 . D
#
= QU I
- I SO
ANGE
E I S AL L
T
Enables the engineer to isolate/de-isolate a range of devices
Enables the engineer to de-isolate all the devices
Enables the engineer to view the devices isolated
Enables the engineer to isolate/de-isolate a single device
Within options 1 and 2 above of the Sensor Iso/Deiso screen, follow the on-screen instructions to
enter loop and sensor number(s). Press * ENTER at each stage. After entering loop and sensor (or
range of sensors), a screen similar to the following will appear:
I DENT I F Y DE
0 1 : 0 0 1 DE - I
1 . I S O
2 .
#
= Q
Loop & device number
V
S
D
U
I
O
E
I
CE
LAT ED
- I SO
T
Current Status
Press 2 to de-isolate
Press 1 to isolate
Selecting Option 2 . PANEL INPUTS on the ISOLATION FACILITY screen accesses a screen for
single, range or read options. After selecting single or range as appropriate and entering the input
*
number (s), followed by
I DENT I F Y
I N
I N P UT
0 0 1 D
1 . I S O
2 .
#
= Q
Input number
P
E
D
U
U
I
E
I
ENTER, the following screen is revealed:
T
S OLAT ED
- I SO
T
Current Status
Press 2 to de-isolate
Press 1 to isolate
When any device is isolated, the DISABLED LED indicator on the panel will illuminate.
Document Ref: Nex8user.doc/Rev0
09.07.00
Page 3 of 4
Originator MC
Checked by _AC_
(v)
Edit
This option is used to enter device location messages and to enter the company name of the
installation. Text editing must be done using either the PC download facility or special keyboard.
Please contact your system provider for details.
User Controls and Indications
System disabled
illuminated when
detectors or inputs
are isolated
LCD display
4 x 20 character line
to display 2 events
Press to reveal
more messages on
the LCD display
Silence alarms
control. Press
Press to test the
to silence the
alarm sounders.
alarms.
Release to clear.
General fault
illuminates when
a general system
fault has occurred
Illuminates when the
the mains supply
is healthy.
LED flashes when
a fire is triggered. It
then goes steady when
the SILENCE ALARMS
is pressed.
Flashing LED in FIRE.
Prompts the user to
operate the SILENCE
ALARMS control in
accordance with the fire
proceedures in operation.
The LED then goes steady.
SUPPLY
HEALTHY
GENERAL
FAULT
FIRE
DISABLED
ACCEPT
1
SILENCE
ALARMS
RESET
SYSTEM
7
2
SCROLL
MESSAGES
CLEAR
DISPLAY
8
3
TEST
ALARMS
TEST
DISPLAY
9
4
ACCESS
MENU
SILENCE
BUZZER
0
5
OVERRIDE
DELAY
ESCAPE
#
6
EVACUATE
ENTER
*
TEST
DELAY
ON
SYSTEM
FAULT
ALERT
MORE
MESSAGES
Illuminates when
the alarms and panel
outputs would be
delayed in the event
of a fire condition.
Illuminates when
the panel is in
engineers test mode.
Illuminates when
there is a system fault.
Flashes when there are
more events to be viewed
on the LCD display.
Pressing the SCROLL MESSAGES
will reveal the data until the
LED goes steady.
Press to clear the
LCD display after
a fault has been
cleared.
Test display to
test all LEDs and
panel buzzer.
Silence buzzer control.
Press to silence the fault
or alert buzzer.
Press to escape from
the engineer programme
function.
Press to enter
engineer's data
Press to access
engineers menu
via access code.
ACCESS
CONTROLS
Illuminates when
a device is in
an alert condition.
System Reset
control. Press to
reset the system
after the Silence Alarms
has been pressed.
Press to override
the output delay.
Evacuate control operates
the alarm circuits and the
fire relays. Press to operate
and press SILENCE ALARMS
to silence.
Access Controls Keyswitch.
Position "0" inhibits all the controls.
Position "1" enables all the controls
LCD Display Example
Document Ref: Nex8user.doc/Rev0
09.07.00
Page 4 of 4
Originator MC
Checked by _AC_