Nexus 21 Server A1557 User Manual

Nexus 1-8 Loop (A1557)  
Analogue Addressable Control Panel  
Installation and Commissioning Manual  
Contents  
Page  
1
1.0  
2.0  
3.0  
4.0  
5.0  
6.0  
Introduction and Guided Tour  
Cabinet Installation  
Engineer’s Functions  
Panel Check  
7
9
10  
10  
20  
Panel Configuration  
Commissioning  
Appendices  
i.  
Technical Specifications  
24  
25  
27  
ii.  
iii.  
Other Relevant Documentation  
Compatible Loop Devices and Panel Responses  
1.0  
Introduction  
Thank you for purchasing this Nexus 1-8 loop analogue addressable control panel. This range  
of panels is designed to comply with to the requirements of BS5839 part 4 1988. The Nexus 1-  
8 loop panel will provide the user with many years of reliable service.  
IMPORTANT NOTE: Read the instructions carefully before commencing installation and  
commissioning.  
1.1  
Guided Tour  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 1 of 30 Originator MC Checked by AC___Approved by JBJ__  
 
System disabled  
illuminated when  
detectors or inputs  
are isolated  
Press to reveal  
more messages on  
the LCD display  
General fault  
Silence alarms  
LCD display  
4 x 20 character line  
to display 2 events  
illuminates when  
a general system  
fault has occurred  
System Reset  
control. Press to  
reset the system  
after the Silence Alarms  
has been pressed.  
control. Press  
to silence the  
alarms.  
Press to test the  
alarm sounders.  
Release to clear.  
SILENCE  
ALARMS  
RESET  
SYSTEM  
1
7
Press to clear the  
LCD display after  
a fault has been  
cleared.  
Illuminates when the  
the mains supply  
is healthy.  
SCROLL  
MESSAGES  
CLEAR  
DISPLAY  
2
8
LED flashes when  
Test display to  
test all LEDs and  
panel buzzer.  
a fire is triggered. It  
then goes steady when  
the SILENCE ALARMS  
is pressed.  
SUPPLY  
HEALTHY  
GENERAL  
FAULT  
TEST  
ALARMS  
TEST  
DISPLAY  
3
9
Silence buzzer control.  
Press to silence the fault  
or alert buzzer.  
FIRE  
DISABLED  
TEST  
ACCESS  
MENU  
SILENCE  
BUZZER  
4
0
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.  
ACCEPT  
Press to escape from  
the engineer programme  
function.  
OVERRIDE  
DELAY  
ESCAPE  
#
5
DELAY  
ON  
SYSTEM  
FAULT  
Press to enter  
engineer's data  
MORE  
MESSAGES  
ALERT  
EVACUATE  
6
ENTER  
*
Press to access  
engineers menu  
via access code.  
Illuminates when  
the alarms and panel  
outputs would be  
delayed in the event  
of a fire condition.  
ACCESS  
CONTROLS  
Press to override  
the output delay.  
Illuminates when  
the panel is in  
engineers test mode.  
Evacuate control operates  
the alarm circuits and the  
fire relays. Press to operate  
and press SILENCE ALARMS  
to silence.  
Illuminates when  
a device is in  
an alert condition.  
Illuminates when  
there is a system fault.  
Access Controls Keyswitch.  
Position "0" inhibits all the controls.  
Position "1" enables all the controls  
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.  
1.1.3 Display Printed Circuit Boards as Viewed from Inside Cabinet  
EPROM WITH  
SOFTWARE  
REFERENCE  
PROC RESET  
DISPLAY  
NODE ADDRESS  
DIL SWITCH  
CONNECT TO  
MOTHERBOARD  
B/+  
A/-  
SCN  
PROC FAILED  
FOR REPEATER  
USE ONLY  
B/+  
A/-  
COMMS FAILED  
SCN  
FLT  
24V  
24V AND 0V  
SUPPLY  
0V  
PRINTER  
INTERFACE  
ZONE BOARD  
INTERFACE  
ZONE BOARD DISABLE  
MONITORING LINK  
1.1.5 A1557 Motherboard Showing Essential Engineering Components  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 3 of 30  
Originator MC Checked by AC__  
 
Field terminals  
J14  
keyboard  
port  
Alarm Alarm  
Aux Flt Aux  
Repeater  
r
Remote inputs  
I/O  
Network  
Loop1  
Loop 2  
Aux Fire  
n
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2
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-
+
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A1549 zone  
board interface  
Fuse8  
24V 1A  
D0+  
DO-  
24v  
0v  
J5 - PC port  
Fuse 7  
24V 1A  
Display  
terminals  
B1 - Lithium  
clock battery  
U2 EPROM  
J4 A1558 expansion  
board interface  
J3  
[jumper  
not fitted]  
LBAR2  
[See alarm list]  
J12 remove if  
zone board  
monitoring  
required  
Fuse 9 24V 3A  
Fuse 10  
24v 3A  
Power for  
loop  
0v  
LBAR1  
[See alarm list]  
5v  
expansion  
board  
Proc  
failed  
24v  
A B C N  
2
4
v
f
0
v
8
l
on  
off  
2
4
v
8
v
0
v
v
t
J9 Buzzer  
enable  
Silence  
alarms  
Silence  
buzr  
Test  
alarms  
Local  
evac  
SW 1  
Configuration  
switches  
Processor, display  
power and common  
fault from PSU  
Loop power  
from PSU  
Reset  
system  
Test  
lamps  
J6 - Network  
card slot  
J8- Loop 2  
card slot  
J7- Loop 1  
card slot  
LBAR 1 Alarm List.  
Comm failed.  
Fire.  
LBAR2 Alarm List.  
Net enable.  
LP1 enable.  
Alert.  
LP2 enable.  
Fault.  
LP3 enable.  
Isolated.  
LP4 enable.  
Supply fault.  
Alarm fault.  
Sil alarms.  
Sil buzzer.  
Sys reset.  
LP5 enable.  
LP6 enable.  
LP7 enable.  
LP8 enable.  
!
Lithium Battery  
Caution - danger of explosion if battery is incorrectly replaced. Replace only with same or  
equivalent type recommended by the manufacturer. Dispose of used batteries according to  
the manufacturers instructions. This battery should be replaced by trained service personnel  
only.  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 4 of 30  
Originator MC Checked by AC__  
 
A1557 Field Terminal List [Listed along the top edge of the PCB from left to right]  
Terminal Ident. Function  
Terminal Ident.  
Function  
Aux Fire NO 1  
Fire relay normally open 1  
Fire relay normally closed 1  
Fire relay pole 1  
Fire relay normally open 2  
Fire relay normally closed 2 Network NO +  
Alarm 1  
+
-
+
-
Sounder circuit 1 + [Active polarity]  
Sounder circuit 1 - [Active polarity]  
Sounder circuit 2 + [Active polarity]  
Sounder circuit 2 - [Active polarity]  
Panel network out +  
Panel network out -  
Panel network in +  
Panel network in -  
Loop 1 out +  
Loop 1 out -  
Loop 1 in +  
Loop 1 in -  
Loop 2 out +  
NC1  
P1  
NO 2  
NC2  
P2  
Alarm 2  
Fire relay pole 2  
Fault relay pole  
NO-  
NI +  
NI -  
LO+  
LO-  
LI+  
LI-  
LO+  
LO-  
LI+  
LI-  
Aux Flt  
P
NO  
NC  
24V  
0V  
MX+  
MX-  
Fault relay normally open  
Fault relay normally closed  
Aux DC supply [24V]  
Aux DC supply [0V]  
Local I/O expansion port +  
Local I/O expansion port -  
Repeater out +  
Repeater out -  
Repeater in +  
Repeater in -  
Loop 1  
Loop 2  
Aux  
I/O  
Repeater RO +  
Loop 2 out -  
Loop 2 in +  
Loop 2 in -  
RO -  
RI +  
RO -  
Remote  
Inputs  
SAL  
Silence alarms  
RST  
EVC  
SBZ  
COV  
FLT  
Reset  
Evacuate  
Silence buzzer  
Class change alarm  
Fault  
1.1.6 Power Supply Illustration  
+
+
12V  
12V  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 5 of 30  
Originator MC Checked by AC__  
 
1.1.7 Loop Card Expansion Motherboard  
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Loop 3  
Loop 4  
Loop 5  
Loop6  
Loop 7  
Loop 8  
0V  
5V  
24V  
1.1.8 Programmable Expansion Boards  
Up to 31 A1535 (relay) and A1536 (alarm) programmable expansion boards may be connected  
to the Nexus 1-8 loop (A1557) panel. Two boards may be housed internally, the remainder  
require other enclosures. Refer to the A1535/A1536 Installation & Commissioning Manuals  
for further details.  
(i)  
The A1535 board provides 8 programmable inputs and 8 programmable relay circuit outputs.  
(ii) A1536 8 Way Programmable Input/Output Alarm Board  
A1535 8 Way Programmable Input/Output Relay Board  
The A1536 board provides 8 programmable inputs (0V switched) and 8 programmable alarm  
circuit outputs.  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 6 of 30  
Originator MC Checked by AC__  
 
2.0  
Cabinet Installation  
WARNING: Please read this section completely before commencing installation.  
Prior to commencing installation of the control panel, ensure that adequate precautions are  
taken against static damage to the sensitive electronic components on the control board. You  
should discharge any static electricity you may have accumulated by touching a convenient  
earthed object, e.g. an unpainted copper radiator pipe. You should repeat the process at  
regular intervals during the installation process, especially if you are required to walk over  
carpets.  
The panel must be powered down before removing or replacing any card or module. Failure  
to observe this may cause damage to the loop cards and the motherboard.  
When changing any plug-in cards, observe anti-static precautions. Ensure that all power is  
removed from the system. Failure to do so may result in damage to the cards or panel.  
The panel must be located in a clean, dry position which is not subject to shock or vibration  
and at least 2 metres away from pager systems or any other radio transmitting equipment.  
The maximum temperature range is 0ºC - 40ºC; maximum humidity is 95%.  
This equipment contains dangerous voltages. To prevent electric shock to unqualified  
personnel ensure that the door is locked at all times when the panel is left unattended. Do  
not leave the key to open the panel door with unqualified personnel. There are no user-  
serviceable parts inside.  
IMPORTANT NOTES ON BATTERIES:  
DANGER: Batteries are electrically live at all times, take great care never to short circuit the  
battery terminals.  
DANGER: A lithium “coin cell” is fitted to the motherboard PCB. There is a danger of  
explosion if this battery is incorrectly replaced. Replace only with same or equivalent type  
recommended by the manufacturer. Dispose of used batteries according to the  
manufacturer’s instructions. The replacement of this battery must be carried out by trained  
service personnel only.  
WARNING: Batteries are often heavy, take great care when lifting and transporting  
batteries. For weights above 24 kilos, lifting aids should be used.  
WARNING: Do not attempt to remove battery lid or tamper with the battery internal  
workings. Electrolyte is a highly corrosive substance, and presents significant danger to  
yourself and to anything else it touches. In case of accidental skin or eye contact, flush the  
affected area with plenty of clean, fresh water and seek immediate medical attention.  
VRLA batteries are “low maintenance” requiring no electrolyte top-up or measurement of  
specific gravity.  
WARNING: If required, clean the case with a cloth that has been soaked or dampened with  
distilled water. Do not use organic solvents (such as petrol, paint thinner, benzene or mineral  
spirits) and other materials can substantially weaken the case.  
WARNING: Avoid operating temperatures outside the range of -15°C/5°F to +50°C/122°F  
for float/standby applications.  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 7 of 30  
Originator MC Checked by AC__  
 
DANGER: Do not incinerate batteries. If placed in a fire, the batteries may rupture, with the  
potential to release hazardous gases and electrolyte. VRLA batteries contain substances  
harmful to the environment. Exhausted batteries must be recycled. Return them to the battery  
manufacturer or take them to your Council tip for appropriate disposal.  
We recommend that isolators are installed at both ends of each loop, immediately the loop  
leaves the panel.  
The volt-free relay contacts provided within the panel must not be used directly to switch any  
voltage which exceeds 50VAC or 75VDC. (Please also refer to relay rating data).  
This equipment requires a 230V AC supply. All installation work should be carried out in  
accordance with the recommendations of BS5839 Part 1 and the current edition of the IEE  
regulations by suitably qualified and trained personnel.  
The panel must be earthed.  
Locate the panel keys and the Installation Kit containing installation spares as follows:  
2 off resistors 3K9  
5 off 20mm glass fuses (assorted)  
1 set of battery leads (positive, negative and a jumper lead)  
Open the display door with the key provided. Carefully remove the control panel interior by  
releasing the cables to the display (carefully noting the connections), the top two chassis  
screws (located top left and right through the motherboard) and removing the lower two screws  
(located bottom left and right) on the chassis plate. Open the right hand door and remove  
chassis in similar manner.  
Note: The chassis screws are bright chrome finnish  
Fix the empty enclosure to the wall using the fixing hole(s) in the upper section of the  
enclosure. Complete the fixing operation using the remaining fixing holes in the enclosure.  
Gland installation wiring into the enclosure using the cable entry points provided. Leave plugs  
in any unused cable entry holes.  
Replace and fix the control panel chassis. Reconnect any internal earth wires.  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 8 of 30  
Originator MC Checked by AC__  
 
3.0  
Engineer’s Functions  
A number of engineering functions are provided by the control unit in order to allow the system  
to be configured specifically to accommodate site requirements. Further functions are provided  
to assist in commissioning and servicing the finished fire detection system.  
There are three separate codes for access to the three engineer function levels. When the codes  
have been entered, the user is guided through the sequence of operations, for the chosen  
function, by text displayed on the LCD.  
Prior to entering the engineers function menus, it is necessary to check that the panel is  
configured to the correct quantity of loops, open the display door and locate the 4 position DIL  
switch marked SW1. The switch settings are tabulated below:  
SW1-3  
OFF  
OFF  
OFF  
OFF  
ON  
ON  
ON  
ON  
SW1-2  
OFF  
OFF  
ON  
SW1-1 NUMBER LOOPS  
OFF  
ON  
1 LOOP  
2 LOOP  
3 LOOP  
4 LOOP  
5 LOOP  
6 LOOP  
7 LOOP  
8 LOOP  
OFF  
ON  
ON  
OFF  
OFF  
ON  
OFF  
ON  
OFF  
ON  
ON  
SW1-4 should be in the OFF position if the panel is to operate as a standard system. If the panel  
is to operate as part of a network system then SW1-4 should be in the ON position.  
Notes: The time/date function is now backed up by an internal lithium “coin cell”. This  
battery is non rechargeable but at 70 mAh, will support the clock in conditions of total power  
failure, for 10 years. The replacement of this battery is intended to be carried out by service  
engineers only. The part number is CR1620.  
The download lead is a standard “null-modem” RS232 lead with 9 pin D type connectors. This  
can be supplied by CEL or obtained direct from Maplins - catalogue ref VD76H. New lead  
connections below:  
Panel end  
Pin Link  
PC end  
Pin Link  
2
3
7
8
5
1
6
4
3
2
8
7
5
4
1
6
9
9
The “Cherry” keyboard in current use can be connected directly to the motherboard via J14 5  
pin Din socket without use of the converter lead.  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 9 of 30  
Originator MC Checked by AC__  
 
4.0  
Panel Check  
Ensure that the mains supply has been inspected and tested in accordance with BS5839 Part 1  
and the current IEE regulations and that the system is correctly earthed.  
4.1  
4.2  
Leave all test resistors in place and connect the 230V mains supply.  
Switch on. The control panel should react as follows:  
(i) The internal buzzer will sound  
(ii) The “System on” LED will illuminate  
(iii) The LCD will display a time [which needs to be checked)  
5.0  
Panel Configuration – Engineer’s Operating Instructions  
NOTE: Please read the panel configuration options before proceeding to commissioning.  
5.1 Introduction  
The functions are intended to allow a complete system to be set up at site level. Three levels of  
engineer functions are provided. The access system is arranged such that level 1 access only is  
possible with code 1, levels 1 & 2 with code 2 and all levels with code 3. Level 1 functions are  
intended for the end user. When the engineer functions are selected, the control panel in most  
cases still fully operational i.e. an alarm condition will fully activate the panel. The only  
options which cause the panel not to be fully operational are described later under “Status -  
disabled” and “Sensor test”.  
All engineering menu functions are available after operating the ACCESS CONTROLS key  
switch and then pressing ENGINEER on the display, followed by input of the appropriate four-  
digit access code.  
If system is left in the engineers mode without controls being pressed, the panel will “time out”  
to normal operation. Time-out periods vary, depending upon option selected, from 1 to 15  
minutes.  
5.2  
Overview of Engineer’s Menu Options  
5.2.1 Access level 1  
1278  
1:SET TIME/DATE  
2:ISOLATE DEVICES  
3:EDIT DEV/LOGO TEXT  
Single device, range, de-isolate all, read.  
Via PC or special QWERTY keyboard.  
5.2.2 Access level 2  
7218  
4:CONFIGURE LOOP  
The panel will identify and report the type and quantity of sensors  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 10 of 30  
Originator MC Checked by AC__  
 
used on the loop (i.e. ionisation smoke, optical smoke, or heat  
sensor)  
5:DEVICE STATUS  
The analogue value can be identified & the detector self-tested, the  
detector LED and the Remote LED can be turned on either in the  
enabled mode or the disabled mode.  
6:LOOP CONTENTS  
Panel reports loop content on the display.  
7:ZONE ALLOCATION  
255 zones (of which 64 are visible indication zones), programmable  
across 8 loops and/or panel inputs.  
8:ALARM TEST  
9:DEVICE TEST  
Sounders operate for 1 second every 10 seconds.  
Illuminates the device LED. Pulses the fire LED on the panel and  
sounds the internal buzzer. No sounder operation, System  
automatically resets after 25 seconds ready for the next device test.  
Provides access to extended menu as detailed below:  
0:EXTENDED MENU  
1:ALERT TRIP LEVELS  
2:FIRE TRIP LEVELS  
3:PANEL DELAY  
Analogue values 35 - 50 in increments of 5.  
Analogue values 55 - 70 in increments of 5.  
Overridden by Delay Override, BGU or Evacuate.  
Set enable period day/night, delay time 1-10 minutes  
Enable/disable.  
4:READ MEMORY  
64 events - most recent first.  
5:CLEAR PRINT QUEUE  
Clears events in printer queue.  
6:NUMBER OF DISPLAYS Sets number of panel displays/repeaters.  
7:PRINT MEMORY  
8:PRINT C/E DATA  
64 events - most recent first.  
Single output, loop address or full listing.  
5.2.3 Access level 3  
8812  
9:EDIT C/E DATA  
0:NETWORK  
Panel and loop (See Cause/effect programming guide).  
Configures panels in a network.  
5.3  
Accessing Engineer’s Menu  
Note: You must operate the ACCESS CONTROLS keyswitch for all engineer’s and user  
functions.  
4
Step 1 - Press  
ACCESS MENU to reveal the following:  
0 9 : 0 4 : 2 6  
P a n e l N a m e  
- - - - - - - - - - - - - - - - - - - -  
E N T E R C O D E , P R E S S  
*
Step 2 - Press appropriate Engineer’s code as section 4.2 above  
7
1
2
8
*
eg  
to reveal the following:  
S E L E C T L E V E L 2 O P T I O N  
1 : S E T T I M E / D A T E  
2: : I S O L A T E D E V I C E S  
*
N E X T P A G E  
#
Q U I T  
*
Step 3 - Press  
to scroll through the Engineer’s Menu.  
NOTE: No facility is accessible unless it is shown on-screen.  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 11 of 30  
Originator MC Checked by AC__  
 
Step 4 - Select the number of the engineer’s facility required by pressing the corresponding  
number button.  
5.4  
Setting Time & Date  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 1:SET TIME/DATE.  
S E L E C T L E V E L 2 O P T I O N  
E N T E R T I M E  
h h m m s s  
#
B A C K S P A C E  
*
E N T E R  
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.  
5.5  
Isolate  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 2:ISOLATE DEVICES.  
*
Within this sub-menu, the following four options are available. Use the  
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.  
to view these  
I S O L A T I O N F A C I L I T Y  
Enables the engineer to isolate/de-isolate loop devices  
1 .  
2 .  
*
S E N S O R S  
P A N E L  
I N P U T S  
N X T P A G E  
#
Q U I T  
Enables engineer to isolate/de-isolate programmable panel inputs  
To select next page (printer isolate)  
Selecting Option 1. SENSORS reveals the following screen:  
S E N S O R  
I S O / D E - I S O  
Enables the engineer to isolate/de-isolate a range of devices  
1 . S I N G L E  
3 . R E A D  
#
2 . R A N G E  
4 . D E I S A L L  
Q U I T  
=
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  
following will appear:  
ENTER at each stage. A screen similar to the  
I D E N T I F Y D E V I C E  
Current Status  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 12 of 30  
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0 1 : 0 0 1 D E - I S O L A T E D  
1 . I S O  
2 . D E - I S O  
Q U I T  
#
=
Press 2 to de-isolate  
Press 1 to isolate  
Loop & device number  
Selecting Option 2 . PANEL INPUTS on the ISOLATION FACILITY screen reveals the  
*
following where the user is prompted to enter the input number followed by  
ENTER.  
I D E N T I F Y  
I N P U T  
Current Status  
I N P U T  
1 . I S O  
0 0 1 D E I S O L A T E D  
2 . D E - I S O  
#
=
Q U I T  
Press 2 to de-isolate  
Press 1 to isolate  
Input number  
When any device is isolated, the DISABLED LED indicator on the panel will illuminate.  
5.6  
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.  
WARNING: We strongly recommend that no text editing should be attempted without the  
use of the PC down-load facility due to the extensive range of options available. However, if  
direct panel programming is unavoidable, a separate document entitled “Programming the  
Nexus 1-8 Loop Analogue Addressable Control Panel Without a PC” is available.  
5.7  
Configure Loop  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 4:CONFIGURE LOOP.  
Then follow on-screen instructions.  
All devices on a loop must be configured using this option in order for the panel to respond to  
these devices.  
The control panel is automatically searching the detection loop circuit and noting the type of  
devices at the various addresses. The process takes approximately 16 seconds to complete and  
provides the following report:  
P R I O R I T I E S  
0 0 0  
0 0 0  
0 0 0  
0 0 0  
S M O K E D E T E C T O R S  
H E A T D E T E C T O R S  
O U T S T A T I O N S  
5.8  
Device Status  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 5:DEVICE STATUS.  
Selection of this option provides interrogation and control of individual loop devices. Within  
this sub-menu, the following three options are available:  
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Selecting this option provides all the interrogation and control  
functions. All output functions are disabled and only the  
chosen device is being polled. This allows sensor devices to be  
put into the test mode without alarms, etc. being raised and  
allows observation of the rising analogue value.  
D E V I C E  
D I S P L A Y  
D I S P L A Y  
S T A T U S  
( D I S A B L E D )  
( E N A B L E D )  
1
2
3
P R I N T D E V / S  
S T A T U S  
Selection of this option causes the control panel to  
output status information for all connected devices  
to its printer (if fitted).  
Selecting this option enables specified  
devices to be interrogated and for commands to be sent to the devices. When the self test  
mode is entered in this condition, the device under test should eventually enter an alarm  
condition. When this occurs the control panel will react as if a genuine alarm condition  
had been detected. The system will exit the engineer’s test mode and will need to be  
silenced and reset in the normal manner.  
5.8.1 Status Disabled/Enabled  
Selecting Status options 1 or 2 will allow the engineer to enter the loop and device numbers.  
The display then shows the following:  
ADR VAL TYPE STS CMD  
100 23 ION 000 000  
ZONE 12 CMD BITS=123  
4)PREV 5)NEXT #)END  
The typical display example shown above is interpreted as follows:  
The device address (ADR) is 100  
The analogue value (VAL) is 23  
The device type (TYPE) is ionisation smoke (ION)  
The input status (STS) is 000  
The control panel command status (CMD) is 000  
The allocated zone for the device is 12  
Key 4 allows the user to move to the previous device. The above example will be decreased to  
address 99.  
Key 5 allows the user to advance the address of the device being interrogated. The above  
example will be advanced to address 101.  
Key # to escape.  
The device TYPES which may be indicated are as follows:  
SOU  
O/S  
ION  
MON  
OPT  
-
-
-
-
-
Sounder circuit controller  
Input/Output device  
Ionisation smoke sensor  
Monitor (zone monitor, control monitor)- Device type code reference no. 4  
Optical smoke sensor  
Heat sensor  
- Device type code reference no. 1  
- Device type code reference no. 2  
- Device type code reference no. 3  
- Device type code reference no. 5  
- Device type code reference no. 6  
- Device type code reference no. 7  
HEAT -  
BGU  
-
Call point or call point monitor  
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The keypad keys 1, 2 & 3 become control switches for the 3 control panel command bits.  
(Indicated by the numbers 123 under the CMD indicators).  
Pressing key 1 causes command bit 1 to toggle between 0 and 1, key 2 for bit 2 and key 3 for  
bit 3.  
The 3 command bits have different purposes depending upon the device type. In the case of  
smoke (ion and opt) and heat sensors, the command bit allocation is as follows:  
1
2
3
Turn on Remote LED  
Enter self test mode  
Turn on Sensor LED  
Break glass units respond to bits 2 & 3 only.  
For command functions of other devices, refer to relevant literature.  
Typical control example:  
When a command bit is sent to a device, after a short delay, the status confirmation - returned  
from the device - will be shown on the LCD. With the display as shown above, pressing key 3  
turns on the sensor LED at device number 100. Pressing key 3 again turns it off.  
WARNING: In the enabled condition the response of devices to the command codes will be  
relatively slow due to the fact that the control panel is polling all connected devices and  
command bits are required to be sent to the device twice.  
When an ionisation sensor is tested, the display may briefly show an “ALERT” condition as  
the sensor output rises. Other sensors react more quickly and appear to reach FIRE  
condition immediately.  
WARNING: If tests are carried out in the disabled mode, it is essential that the command  
bits for each device be returned to 000 before moving on to another device. Failure to  
observe this requirement will mean that, if a device has been left in the test mode, upon  
returning to normal operation a fire alarm condition will be raised.  
The control panel does clear the command bits upon return to normal operating condition  
but the sensor devices respond too slowly and the control panel reads this as a fire alarm  
condition.  
To exit from the status option, press the # key. This returns the control panel to normal  
operation.  
5.8.2 Status To Printer  
The format of the printed status report is shown in the short example below:  
06/09/97 11:13:05  
LOOP STATUS REPORT  
ADR VAL TYPE ZONE  
001 25 ION  
1
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025 16 BGU  
123 21 HEAT  
2
4
END OF LOOP REPORT  
5.9 Loop Contents  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 6:LOOP CONTENTS.  
Selecting option 6 causes the display to show a list of the devices currently configured without  
actually re-configuring the system. The format of the report is as shown under the  
CONFIGURE Loop option previously explained (see section 4.7 above).  
5.10 Zones  
WARNING: We strongly recommend that no zone editing should be attempted without the  
use of the pc down-load facility due to the extensive range of options available. However, if  
direct panel programming is unavoidable, a separate document entitled “Programming the  
Nexus 1-8 Loop Analogue Addressable Control Panel Without a PC” is available.  
5.11 Alarm Test  
The purpose of the Alarm Test facility is for audibility testing.  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 8:ALARM TEST and  
follow on-screen instructions.  
In this condition the control panel will automatically sound the panel and loop alarms and the  
internal panel buzzer for 10 seconds every 15 seconds. This will continue until key 2 is pressed  
or for a maximum of 15 minutes whichever occurs first.  
All auxiliary outputs are disabled.  
5.12 Device Test (Also known as the One Man Test Mode)  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 9:DEVICE TEST.  
In this condition sensors may be triggered manually. Device operation illuminates the device  
and LED pulses the fire LED on the panel and sounds the internal buzzer. No sounder  
operation, System automatically resets after 25 seconds ready for the next device test. All other  
outputs are disabled in this mode.  
5.13 Extended Menu  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 0:EXTENDED MENU.  
*
For options available within this extended menu, see section 5.2.1 above. Use  
through options.  
to scroll  
5.14 Alert Trip Level  
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This gives the option of adjusting the alert trip level of individual devices to suit particular  
installation conditions. To adjust the trip level follow the procedure below:  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 0:EXTENDED MENU.  
S E L E C T L E V E L 2 O P T I O N  
1 :  
2 :  
*
A L E R T T R I P L E V E L S  
F I R E T R I P  
N E X T P A G E  
L E V E L S  
Q U I T  
#
Select 1: ALERT TRIP LEVELS & follow on-screen instructions, selecting loop & device no.  
By repeatedly pressing the button designated TOGGLE, the engineer may view the various pre-  
alarm levels available.  
#
*
The required level may be selected by pressing  
OK, then  
to quit.  
5.15 Fire Trip Level  
This gives the option of adjusting the fire trip level of individual devices to suit particular  
installation conditions. To adjust the trip level follow the procedure below:  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 0:EXTENDED MENU.  
Select 2: FIRE TRIP LEVELS.  
By repeatedly pressing the button designated TOGGLE, the engineer may view the various fire  
trip levels available.  
#
*
The required level may be selected by pressing  
OK, then  
to quit.  
5.16 Panel Delay  
This gives the option to have a delayed response of panel and loop alarms & auxiliary relays to  
a fire condition. This facility is programmed to be active during a specified period of the  
day/night. The engineer must firstly set the time on/off period; this is the time of day/night  
during which - if an alarm event were to occur - a delay would be effective. Secondly he must  
select the period of the delay (1 - 10 minutes). Thirdly he must enable the delay for it to be  
effective.  
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At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 0:EXTENDED MENU.  
Select 3:PANEL DELAY. This will reveal the following:  
Setting the time period of day or night during which, if a fire condition  
occurred, the outputs would be delayed.  
* * S E T P A N E L D E L A Y S * *  
1 :  
2 :  
*
T I M E O N / O F F  
D E L A Y P E R I O D  
N X T P A G E  
#
Q U I T  
Setting the output delay time. Press # to set 1 to 10 minutes.  
Selecting 1: TIME ON/OFF will reveal the following two sub-menu options:  
* * S E T P A N E L D E L A Y S * *  
Setting the beginning of the time period  
Setting the end of the time period  
1 :  
2 :  
T I M E E N A B L E  
T I M E D I S A B L E  
#
=
Q U I T  
*
Selecting  
following:  
NXT PAGE in the SET PANEL DELAYS main menu, will reveal the  
* * S E T P A N E L D E L A Y S * *  
Enabling or disabling the panel delay function.  
3 :  
E N / D I S D E L A Y  
*
N X T P A G E  
#
Q U I T  
5.17 Read Memory  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 0:EXTENDED MENU.  
Selecting option 4 will cause the display to show the last 64 events held in the panel’s memory.  
#
*
Press  
to scroll through the events. Press  
to exit to the main menu. The events are  
displayed in reverse order i.e. most recent event first.  
5.18 Clear Print Queue  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 0:EXTENDED MENU.  
Select option 5 to clear all outstanding reports from the printer queue.  
5.19 Programming the Number of Displays ( Repeaters )  
Select Option 6: NUMBER OF DISPLAYS  
This function is used to view/configure the number of displays connected to the control panel.  
Display 01 is the panel’s own display. Displays 02 to 15 must be used for repeater panels.  
NOTE: This function tells the main panel how many displays to look for. It must be used in  
conjunction with the Nexus repeater panel manual where repeaters are used. Each display  
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has its own DIL switch address setting. These addresses must be set in accordance with the  
repeater panel manual. The panel’s own display DIL switch setting must not be changed.  
* N U M B E R O F D I S P L A Y S *  
Displays current status  
D I S P L A Y  
0 1_  
* = E N T E R ,  
# = D E L E T E  
To change number of displays  
To accept number of displays  
5.20 Print Memory Contents  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 0:EXTENDED MENU.  
Select 7: PRINTER MEMORY.  
The format of the printer memory report is shown in the short example below:  
PANEL NAME  
1:063 Z01 BGU FIRE  
00:02:35  
01/01/98  
ALARMS SILENCED  
00:02:42  
01/01/98  
SYSTEM RESET  
00:02:45  
01/01/98  
5.21 Print Cause and Effect Data  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 0:EXTENDED MENU.  
Selecting 8: PRINTER C/E DATA will print all local cause & effect information.  
5.22 Options Available at Access Level 3  
At Step 4 within the Engineer’s Menu (see Section 5.3 above), select 0:EXTENDED MENU.  
Three options are available:  
1) Edit Local Cause/Effect  
2) Edit Network Cause/Effect  
3) Print Network Cause/Effect  
Select 9: EDIT C/E DATA.  
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WARNING: We strongly recommend that no local cause/effect editing should be attempted  
without the use of the pc down-load facility due to the extensive range of options available.  
However, if direct panel programming is unavoidable, a separate document entitled  
“Programming the Nexus 1-8 Loop Analogue Addressable Control Panel Without a PC” is  
available.  
Select 0: NETWORK  
WARNING: We strongly recommend that no network cause/effect editing should be  
attempted without the use of the pc down-load facility due to the extensive range of options  
available. However, if direct panel programming is unavoidable, a separate document  
entitled “Programming the Nexus 1-8 Loop Analogue Addressable Control Panel Without a  
PC” is available.  
6.0  
6.1  
Commissioning  
Introduction  
The following equipment should be available where possible to minimise commissioning time:  
(i) VHF/UHF Portable Radio (for two engineers)  
(ii) Multi-meter or equivalent  
6.1.1 Checklist  
Before commissioning, the engineer should check the following:  
(i) All field wiring has been inspected and tested in accordance with CEL wiring  
recommendations, BS5839 part 1 and current IEE wiring regulations.  
(ii) All field cables are glanded into the control panel cabinet.  
(iii) Detector bases are terminated but detector heads are not fitted. Any devices with  
electronic components are not fitted. Terminations to devices with electronic  
components should be linked through to maintain cable continuity.  
(iv) Call points are not connected but cable is linked through to maintain continuity.  
(v) No end-of-line devices (eg alarm circuit EOL resistor) are fitted.  
6.1.2 The following information should be available to the commissioning team:  
(i) Detection layout drawings and address information  
(ii) Wiring schematic diagram  
(iii) Panel Planning Sheet and Cause/Effect Sheet (where applicable)  
(iv) PC or QWERTY keyboard for programming  
(v) Control Panel installation manuals  
(vi) Installation manuals for all equipment connected to the system  
6.1.3 Experience has shown that tracing wiring faults on long circuits which are routed  
through risers etc. can be difficult without knowledge of the wiring route.  
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It is recommended that the electrical installer is made available until basic wiring continuity is  
proven. A minimum of two persons (e.g. engineer and mate) is recommended for efficient  
commissioning.  
6.2  
An Overview of the Commissioning Procedure  
The approach to be used when commissioning a fire alarm system is to check each circuit and  
function in turn to ensure correct operation of the entire system. In this way any faults may be  
located quickly and accurately. The general procedures are as follows:  
Alarm circuits should be checked first. The correct operation of each sounder should be  
checked for correct audibility as specified in BS5839 part 1, using the “Test Alarms” facility.  
Detection loops should be commissioned next. The purpose is to establish the correct  
functioning of each device and checking for correct indication at the control panel. Any  
auxiliary circuits may then be tested.  
WARNING: Before testing, the engineer must be aware both of the operation of all devices  
fitted to the auxiliary circuits and of the consequences of their operation.  
6.3  
Pre-Commissioning Wiring Check  
NOTE: This pre-commissioning wiring check procedure should be followed to test all wiring  
prior to specific commissioning of any detection, alarm and auxiliary circuits.  
6.3.1 The following assumes that the control panel has been installed in accordance with the  
installation procedure and is powered with only the “Power On” LED illuminated. Do  
not connect field wiring at this stage.  
6.3.2 Ensure that there are no devices connected to the loop and alarm circuits but the cables  
are linked through at the device locations to achieve a continuous circuit.  
6.3.3 Ensure that resistance of all cables to earth and between cores is more than 1M.  
Check the following:  
(i) Positive to earth resistance is greater than 1MΩ  
(ii) Negative to earth resistance is greater than 1MΩ  
(iii) Positive to negative resistance is greater than 1MΩ  
(iv) Place a short circuit across the ends of the loop and alarm circuits. Measure the  
resistance across the positive and negative cables of each of the circuits and ensure  
that the value does not exceed the value calculated on the Loop Calculator  
Spreadsheet. Remember to remove the short circuits after the tests.  
Correct polarity throughout all circuits must be maintained. Rectify any faults.  
6.3.4 Power down panel. All bells, detector heads and call points should now be connected  
and alarm circuit end-of-line resistors fitted. Use the spare end-of-line resistors  
supplied and leave the EOL resistors in the panel terminals at this stage. Be very  
careful to maintain correct polarity at each device.  
6.4  
Commissioning Procedure  
6.4.1 Alarm Circuits  
After completion of the pre-commissioning wiring check, this procedure should be followed:  
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(i)  
Remove the resistor from the first alarm circuit terminal and connect the first alarm  
circuit wiring to the terminals, observing correct polarity. Check that any alarm fault  
indications clear after a few seconds.  
(ii)  
Press the “Evacuate” switch. Check that all sounders connected to the alarm circuit  
operate.  
(iii)  
(iv)  
Press “Silence Alarms” and “Reset”.  
Repeat steps (5.4.1) to (5.4.3) for the second and any subsequent alarm circuits.  
6.4.2 Commissioning Loops  
NOTE: The pc down-load facility may be used at any stage up to Section (v).  
(i)  
Insulate and physically protect the positive and negative ends of one end of the  
detection loop wiring. Connect the other end of the wiring to the panel terminals LO+  
and LO- for loop 1.  
(ii)  
Enter the engineers test mode at level 2 and select option 4 (Configure). After the  
configuration period, the panel will report the numbers of the different types of sensors.  
If the numbers and types of sensor agree with the physical check already carried out,  
proceed to the next stage (iv).  
(iii)  
(iv)  
If double addressing of detectors is found on the loop, the LCD display will show a  
report of the device numbers affected. The engineer may also notice a device missing  
from the expected total quantity of loop devices.  
When all required sensors have been configured, select engineer’s Option 5: STATUS  
and using the STATUS DISABLED option, interrogate the devices on an individual  
basis. To view correct electronic operation, press button for command bit 2 (self test  
mode). Press again to return detector to quiescent state. To turn a device LED on (to  
identify its correct location), press button for command bit 3. Press again to return  
detector to quiescent state. To turn a remote device LED on (to identify its correct  
location), press button for command bit 1. Press again to return detector to quiescent  
state.  
(v)  
Repeat sections (i) to (iv) for each loop.  
(vi)  
Sensor installation is now complete and the return end of the detection loop may now  
be connected to the LI+ and LI- terminals.  
WARNING: Before connecting, ensure that the returning polarity is correct.  
The final phase of the sensor commissioning involves replacing all the short circuit isolators.  
The supply polarity to isolators is important and must be checked and corrected if necessary  
before fitting the isolator.  
WARNING: If the isolator polarity is found to be incorrect, it is absolutely essential that the  
polarity is corrected at each termination point throughout the wiring. Failure to observe this  
will result in the polarity of the return end of the cable becoming incorrect with the  
possibility of damage to the control panel.  
6.5  
A1535 (Programmable Relay Expansion Boards) and A1536  
(Programmable Alarm Expansion Boards)  
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Refer to the Installation & Commissioning Manuals for these boards.  
6.6 Auxiliary Circuits  
Any auxiliary circuits or equipment which is not supplied as a standard part of the fire alarm  
panel is the responsibility of the installer and must be tested for safe and correct operation by  
the commissioning engineer. If special output facilities are provided as extra equipment, refer to  
separate drawings and manuals for commissioning information.  
6.7  
Cause & Effect Editing  
The Nexus panel may now be programmed with the text, zone and cause & effect information.  
WARNING: We strongly recommend that no cause & effect programming should be  
attempted without the use of the pc down-load facility due to the extensive range of options  
available. However, if direct panel programming is unavoidable, a separate document  
entitled “Programming the Nexus 1-8 Loop Analogue Addressable Control Panel Without a  
PC” is available.  
6.7.1 Cause & Effect Testing  
Testing of the panel’s fire and fault relays and all cause & effect outputs must be done with the  
system fully functional. There are two options:  
(i) Operate field devices and physically check programmed output devices for correct  
operation.  
(ii) Select engineer’s option 5: STATUS and operate devices with the System Enabled  
option as described in the Nexus 1-8 Loop Installation Manual. This will cause  
selected devices to go into fire and operate the panel’s cause & effect programming.  
Physically check programmed output devices for correct operation.  
6.8  
Final Commissioning  
6.8.1 Select engineer’s Option 9: DEVICE TEST and carry out tests on all sensor devices.  
6.8.2 Testing of the panel’s fire and fault relays and all cause & effect outputs must be done  
with the system fully functional.  
There are two options for testing the panels cause & effect:  
(i) Operate devices as required  
(ii) Use engineer’s Option 5: STATUS, selection 1 SYSTEM ENABLED to operate  
devices  
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Appendices  
i
Technical Specifications  
NOTE: Due to the wide scope of panel options, we strongly recommend the use of our  
battery calculation chart which is available on PC disk or as hard copy. The information  
below should not be used to calculate standby battery size.  
Power Supplies  
Mains input voltage:  
230V AC -6% + 10%  
System operating voltage:  
Quiescent current at 24V DC:  
Quiescent loop card current  
Loop card max. current  
Power supply max:  
24V DC  
375mA (A1557. A1508, A1575 – no loop cards)  
65mA + 1.3 x loop current  
200mA  
5 Amps @ 24V DC  
Alarm power output max:  
Auxiliary output max:  
Battery charger output:  
Battery type:  
1 Amp per circuit @ 24V DC (Note 3)  
0.5 Amp @ 24V DC (Note 4)  
1.5 Amps (Note 5)  
24V sealed lead acid  
Output Circuits  
Alarm circuits:  
2
Alarm circuit monitoring:  
Repeater output:  
Printer output:  
Open/short circuit (Note 6)  
Serial data RS485 (Note 7)  
Parallel  
Multiplex inputs/outputs:  
Panel Network:  
Alarm fuse rating:  
Battery fuse rating:  
Auxiliary fuse rating:  
Mains fuse rating:  
248 (via A1535/A1536 boards)  
Connection of 15 panels via Network data link  
1 Amp thermal resetable fuse  
6.3 Amp (20mm glass)  
0.5 Amp (20mm glass)  
3 Amp (20mm glass)  
Input Circuits  
Detection loops:  
Detection loop fuse rating:  
No. of sensors on loop:  
Cable 1.5mm (max. length - 2km)  
250mA thermal resetable  
126 maximum (Note 9)  
Relay Outputs  
2 independent relays are provided which operate as follows:  
Fire relay:  
Fault relay:  
1 double pole changeover, operates on any fire alarm  
1 single pole changeover operates on any fault signal  
All relay contacts are rated at 24V DC 1 Amp.  
Cable Terminations  
Mains terminals:  
Alarm and loop terminals:  
All other terminals:  
Shrouded, marked & fused, accept max 2.5mm2 cables  
Screw terminals, accept max. 2.5mm2 cables  
Screw terminals, accept max. 2.5mm2 cables  
All terminal functions are identified by screen printing on the circuit boards.  
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NOTES:  
1.  
2.  
We strongly recommend the use of the Battery and Loop calculator for assessing the  
correct size of the standby batteries and correct loop function in all conditions.  
Quiescent current is stated assuming mains failure conditions, therefore the general  
fault LED will be illuminated and the fault buzzer will sound.  
3.  
4.  
The total current drawn by both alarm circuits operating must not exceed 2 Amps.  
The total DC auxiliary current drawn must not the values stated in the Technical  
Specification. The power supply current limiting will operate if ratings are exceeded.  
5.  
6.  
7.  
The battery charger employed is the constant voltage type and the current will be  
dependent upon the state of charge of the battery.  
Alarm line monitoring operates using polarity reversal. All alarm sounders and/or  
visual alarms must be made polarity sensitive for line monitoring to operate correctly.  
Repeater data output is available at terminals in the control panel. Two cores are  
required for the connection of repeater panels. The maximum cable length between the  
control unit and any repeater unit is 2000 metres. The cable must be suitable for RS485  
data such as Belden 8132 or equivalent. If power is provided from the control unit, 2  
additional cores are required.  
8.  
9.  
The control panel provides an RS485 multiplex data link for driving additional output  
devices such as zonal relays, alarms, mimic indicators etc. The output functions are  
programmable at site level.  
The number of sensor devices may need to be reduced due to the power requirements  
of the devices themselves. Fire sensors, heat smoke, call points etc. may be fitted in any  
combination up to the maximum (126) addressing capability of the protocol. Zone  
monitors in particular require a higher operating voltage and also draw significantly  
more current from the control unit; reference to the system design manual is necessary  
if zone monitors are to be used on the loop.  
10.  
If any devices which contain an inductive coil (relays etc.) are connected to the panel,  
these should be suppressed by connecting a diode across the positive and negative  
connections of the coil.  
ii  
Other Relevant Documentation  
Sales Literature  
Nexus 1-8 Loop Application Guide  
Nexus 1-8 Loop User Instructions  
Nexus Repeater Documentation  
A1535 8 Way Relay Board Documentation  
A1536 8 Way Alarm Board Documentation  
PC-Based Software Programming Guide  
Wiring Recommendations  
Battery and loop Calculation Software  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 25 of 30  
Originator MC Checked by AC__  
 
iii  
Compatible Loop Devices and Panel Responses  
The following table shows all devices compatible with the panel. It shows the panel’s response to events from each device type, and indicates the change in  
analogue value and input bits that will be displayed in the status mode. Note that some device types automatically receive cause effect outputs by default. Any such  
programming is indicated in the default cause and effect column.  
Device type  
Type Condition  
Code  
Panel response Analogue Value Status bits Output bits  
(210)  
Default cause  
and effect  
Bit 0 set on  
evacuate  
Comments  
CEL sounder  
controller  
1
Quiescent  
None  
Mode 1  
Mode 2  
Remote fault  
Remote fault  
None  
AV = 16  
AV = 64  
AV = 48  
AV = 4  
AV = 4  
AV = 16  
AV = 4  
000  
000  
000  
000  
000  
Echo  
output bits  
0 = evacuate  
1 = alert  
2 = relay  
Input 1 operated  
Input 2 operated  
Input 3 operated  
Circuit fault  
Quiescent  
CEL Loop  
powered sounder  
1
1
1
2
0 = evacuate  
1 = alert  
Bit 0 set on  
evacuate  
Fault  
Remote fault  
2 = not used  
0 = evacuate  
1 = alert  
Series 90  
sounder/ sounder  
controller  
XP95 sounder/  
sounder  
controller  
Quiescent  
Circuit fault or fault Remote fault  
input operated  
Quiescent  
Circuit fault  
None  
AV = 16  
AV = 4  
Echo  
output bits  
Bit 0 set on  
evacuate  
2 = not used  
0 = evacuate  
1 = alert  
None  
Remote fault  
AV = 16  
AV = 4  
Echo  
output bits  
Bit 0 set on  
evacuate  
2 = not used  
0 = relay 1  
1 = relay 2  
2 = relay 3  
CEL I/O unit  
Quiescent  
None  
Fire  
Input  
AV = 16  
AV = 64  
AV = 48  
AV = 4  
000  
000  
000  
000  
Input 1 operated  
Input 2 operated  
Input 3 operated or Remote fault  
power supply failed  
Series 90 3-way  
I/O unit  
2
Quiescent  
None  
Fire  
Input  
Remote fault  
AV = 16  
AV = 16  
AV = 16  
AV = 16  
000  
0 = relay 1  
1 = relay 2  
2 = relay 3  
X means status  
does not affect  
panel status  
Input 1 operated  
Input 2 operated  
Input 3 operated  
1XX  
01X  
001  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 26 of 30 Originator MC Checked by AC___Approved by JBJ__  
 
Device type  
Type Condition  
Code  
Panel response Analogue Value Status bits Output bits  
(210)  
Default cause  
and effect  
Comments  
Series 90 3-way  
I/O analogue unit  
2
Quiescent  
None  
Fire  
Input  
Remote fault  
None  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 16  
000  
1XX  
01X  
001  
000  
001  
0 = relay 1  
1 = relay 2  
2 = relay 3  
X means status  
does not affect  
panel status.  
See note 2.  
Input 1 operated  
Input 2 operated  
Input 3 operated  
Quiescent  
Series 90 1-way  
I/O unit  
2
2
0 = relay  
Input operated  
Fire  
AV = 16  
1 = not used  
2 = not used  
0 = remote  
indicator  
Series 90 switch  
monitor unit  
Quiescent  
Input operated  
None  
Fire  
AV = 16  
AV = 16  
000  
100  
1 = not used  
2 = not used  
0 = remote  
indicator  
1 = not used  
2 = not used  
XP95 I/O unit  
2
Quiescent  
None  
Fire  
Input  
Remote fault  
AV = 16  
AV = 16  
AV = 16  
AV = 4  
000  
1X0  
010  
000  
Fire overrides  
input which in  
turn overrides  
remote fault  
Input operated  
Opto input active  
Input fault  
XP95 output unit  
Series 90  
ionisation smoke  
2
3
Quiescent  
Quiescent  
Fire  
Alert  
Fault  
Quiescent  
Fire  
Alert  
None  
None  
Fire  
Alert  
Data fault  
None  
Fire  
Alert  
Data fault  
None  
AV = 16  
000  
Echo  
output bits  
0 = relay  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 16  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
See note 1.  
XP95 ionisation  
smoke  
3
4
Echo  
output bits  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
See note 1.  
Fault  
CEL zone  
monitor  
Quiescent  
Input 1 operated  
Input 2 operated  
Input 3 operated  
000  
000  
000  
000  
0 = relay 1  
1 = relay 2  
2 = relay 3  
Bit 0 set on  
reset or clear  
faults  
Fire  
Alert  
Remote fault  
AV = 64  
AV = 48  
AV = 4  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 27 of 30  
Originator MC Checked by AC__  
 
Device type  
Type Condition  
Code  
Panel response Analogue Value Status bits Output bits  
(210)  
Default cause  
and effect  
Bit 0 set on  
reset or clear  
faults  
Bit 0 set on  
reset or clear  
faults  
Comments  
Series 90 zone  
monitor  
4
4
4
Quiescent  
Fire  
Circuit fault  
Quiescent  
Alarm  
Circuit fault  
Quiescent  
Alarm  
None  
Fire  
Remote fault  
None  
Fire  
Remote fault  
None  
Fire  
Alert  
Remote fault  
None  
Fire  
Alert  
Remote fault  
None  
Fire  
Alert  
Remote fault  
None  
Fire  
Remote fault  
None  
AV = 16  
AV = 64  
AV = 4  
AV = 16  
AV = 64  
AV = 4  
AV = 16  
AV = 64  
AV = 45 - 51  
AV = 4  
AV = 16  
AV = 64  
AV = 45 - 51  
AV = 4  
AV = 16  
AV = 64  
AV = 45 - 51  
AV = 4  
AV = 16  
AV = 64  
AV = 4  
AV = 16  
AV = 64  
AV = 4  
AV = 16  
AV = 64  
AV = 4  
Echo  
output bits  
0 = reset  
1 = test  
2 = LED  
0 = fault test  
1 = alarm test  
2 = remote LED  
0 = fault test  
1 = alarm test  
2 = LED  
Program LED  
bit in cause  
effect if required  
Program LED  
bit in cause  
effect if required  
Program LED  
bit in cause  
Series 90 control  
unit monitor  
Echo  
output bits  
XP95 Mini-  
switch monitor  
Echo  
output bits  
Bit 0 set on  
reset or clear  
faults  
Alert  
effect if required  
Circuit fault  
Quiescent  
Alarm  
XP95 Switch  
monitor  
4
4
Echo  
output bits  
0 = not used  
1 = alarm test  
2 = LED  
Bit 0 set on  
reset or clear  
faults  
Program LED  
bit in cause  
effect if required  
Alert  
Circuit fault  
Quiescent  
Alarm  
XP95 Switch  
monitor plus  
Echo  
output bits  
0 = opto-reset  
1 = alarm test  
2 = LED  
Bit 0 set on  
reset or clear  
faults  
Program LED  
bit in cause  
effect if required  
Alert  
Circuit fault  
Quiescent  
Alarm  
Circuit fault  
Quiescent  
Alarm  
Circuit fault  
Quiescent  
Alarm  
XP95 Zone  
Monitor  
4
4
4
Echo  
output bits  
0 = reset  
1 = alarm test  
2 = LED  
0 = reset  
1 = alarm test  
2 = LED  
Bit 0 set on  
reset or clear  
faults  
Bit 0 set on  
reset or clear  
faults  
Bit 0 set on  
reset or clear  
faults  
Program LED  
bit in cause  
effect if required  
Program LED  
bit in cause  
XP95 control unit  
monitor  
Echo  
output bits  
Fire  
Remote fault  
None  
effect if required  
XP95 Radio  
Interface  
Echo  
0 = reset  
Fire  
Remote fault  
output bits  
1 = alarm test  
2 = LED  
Circuit fault  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 28 of 30  
Originator MC Checked by AC__  
 
Device type  
Type Condition  
Code  
Panel response Analogue Value Status bits Output bits  
(210)  
Default cause  
and effect  
Comments  
Series 90 optical  
smoke  
5
5
5
5
5
6
6
Quiescent  
Fire  
Alert  
Fault  
Quiescent  
Fire  
Alert  
Fault  
Quiescent  
Fire  
Alert  
Fault  
Quiescent  
Fire  
Alert  
Fault  
Quiescent  
Fire  
Alert  
Fault  
Quiescent  
Fire  
None  
Fire  
Alert  
Data fault  
None  
Fire  
Alert  
Data fault  
None  
Fire  
Alert  
Data fault  
None  
Fire  
Alert  
Data fault  
None  
Fire  
Alert  
Data fault  
None  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
Echo  
output bits  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
See note 1.  
XP95 optical  
smoke  
Echo  
output bits  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
See note 1.  
See note 1.  
See note 1.  
See note 1.  
See note 1.  
See note 1.  
XP95 beam  
Detector  
Echo  
output bits  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
XP95 flame  
detector  
Echo  
output bits  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
XP95 multi-  
sensor opt/heat  
detector  
Echo  
output bits  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
Series 90 heat  
detector  
Echo  
output bits  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
Fire  
Alert  
Data fault  
None  
Fire  
Alert  
Fault  
Quiescent  
Fire  
Alert  
XP95 heat  
detector standard  
Echo  
output bits  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
Alert  
Data fault  
Fault  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 29 of 30  
Originator MC Checked by AC__  
 
Device type  
Type Condition  
Code  
Panel response Analogue Value Status bits Output bits  
(210)  
Default cause  
and effect  
Comments  
XP95 heat  
detector high  
6
Quiescent  
Fire  
Alert  
None  
Fire  
Alert  
Data fault  
None  
Fire  
AV = 8 to 44  
AV = 55 to 127  
AV = 45 to 54  
AV = 0 to 7  
AV = 16  
Echo  
output bits  
0 = remote LED  
1 = self test  
2 = LED  
Bit 0 and bit 2  
set when device  
is in fire  
See note 1.  
Fault  
Series 90  
callpoint/  
callpoint monitor  
7
Quiescent  
Alarm  
Fault  
L10  
L01  
L10  
0 = remote LED  
1 = self test  
2 = LED  
Bit 2 set when  
in fire  
Input bit 2  
AV = 64  
AV = 4  
confirms LED  
operation and is  
represented by L  
Input bit 2  
confirms LED  
operation  
Input bit 2  
confirms LED  
operation  
Fault  
XP95 callpoint  
7
7
7
Quiescent  
Alarm  
Fault  
Quiescent  
Alarm  
Fault  
Quiescent  
Alarm  
Fault  
None  
Fire  
Fault  
None  
Fire  
Fault  
None  
Fire  
AV = 16  
AV = 64  
AV = 4  
AV = 16  
AV = 64  
AV = 4  
AV = 16  
AV = 64  
AV = 4  
L10  
L01  
L10  
L10  
L01  
L10  
L10  
L01  
L10  
0 = remote LED  
1 = self test  
2 = LED  
0 = remote LED  
1 = self test  
2 = LED  
0 = remote LED  
1 = self test  
2 = LED  
Bit 2 set when  
in fire  
XP95 Mini  
Bit 2 set when  
in fire  
switch monitor  
with interrupt  
XP95 USA mini  
priority switch  
monitor  
Bit 2 set when  
in fire  
Input bit 2  
confirms LED  
operation  
Fault  
Notes:  
The analogue thresholds for analogue detectors can be changed for both fire and alert. See the installation and commissioning manual for details.  
On the S90 3-way analogue unit, either the analogue value or logic inputs can raise alarms. The analogue thresholds can also be changed for fire and  
alert on this device. See the installation and commissioning manual for details.  
The number of devices with LEDs operated is limited to eight per loop.  
If a device has more than one condition active then only the highest level event will be reported although lower level alarms may be present on the  
display. For example, if a smoke detector enters an alert condition this will be indicated on the panel. If the device subsequently enters a fire  
condition the alert will clear but the alert LED will become steady to indicate the event occurred.  
Document Ref: Nex8inst.doc/Rev0 09.07.00  
Page 30 of 30  
Originator MC Checked by AC__  
 

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