Nexus 1-8 Loop (A1557) Analogue Addressable Control Panel Installation and Commissioning Manual Contents Page 1.0 Introduction and Guided Tour 1 2.0 Cabinet Installation 7 3.0 Engineer’s Functions 9 4.0 Panel Check 10 5.0 Panel Configuration 10 6.0 Commissioning 20 Appendices i. Technical Specifications 24 ii. Other Relevant Documentation 25 iii. Compatible Loop Devices and Panel Responses 27 1.
1.1.1 Exploded View and Mechanical Data/Text Identification Motherboard Expansion Motherboard Display board assembly mounted on removable door Loop Cards Loop Cards Expansion Cards Network Card A1535 8 way relay A1536 8 way alarm Power Supply Board Space for Internal 12AH Battery Set Printer 1.1.2 User Controls & Indications Document Ref: Nex8inst.doc/Rev0 09.07.
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.
Field terminals J14 keyboard port Aux Flt Aux Fire n n p n n p p n n 0 c 1 o c 2 o c 2 2 1 1 Aux I/O Repeater r r m m r r 2 0 x x o 0 i i 4 v ++ - + v Alarm Alarm Network Loop1 n n n n l l l l 1 2 o o i i o o i i + - + - + - + - + - + - Remote inputs s r e s c f a s v b o l l t c z v t Loop 2 l l l l o o i i +- + - A1549 zone board interface Fuse8 24V 1A D0+ DO24v 0v J5 - PC port Fuse 7 24V 1A Display terminals ! B1 - Lithium clock battery U2 EPROM J4 A1558 expansion board interface J12 remo
A1557 Field Terminal List [Listed along the top edge of the PCB from left to right] Terminal Ident. Function Terminal Ident.
Loop Card Expansion Motherboard l o - l i + Loop 3 Loop 4 l i - l o + l o - l i + l i - l o + Loop 5 l o - l i + Loop6 l i - l o + l o - l i + Loop 7 l i - l o + l o - l i + l i - Loop 8 Loop 8 card slot l o + Loop 7 card slot l i - Loop 6 card slot l i + Loop 5 card slot l o - Loop 4 card slot A1557 motherboard connector l o + Loop 3 card slot 1.1.7 0V 5V 24V 1.1.
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.
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.
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.
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 Leave all test resistors in place and connect the 230V mains supply. 4.2 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.
used on the loop (i.e. ionisation smoke, optical smoke, or heat sensor) 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. Panel reports loop content on the display. 255 zones (of which 64 are visible indication zones), programmable across 8 loops and/or panel inputs. Sounders operate for 1 second every 10 seconds. Illuminates the device LED.
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 ECT L EVE L 2 ENT E R T I ME h h # BACKS P ACE O P T I ON mm s s * ENT ER 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.
0 1 : 0 0 1 1 . I SO DE - I S OLAT ED 2 . DE - I SO # = QU I T Loop & device number Press 2 to de-isolate Press 1 to isolate 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 I DENT I F Y I N I NPUT 0 0 1 D 1 . I SO 2 . # = Q P E D U U I E I T S OLAT ED - I SO T * ENTER.
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.
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.
025 16 123 21 BGU 2 HEAT 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.
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 1 : 2 : * N E A F E C L I X T L EVE L 2 OP T I E R T TR I P L EVE RE T R I P L EVE L T P AGE # QU I ON L S S T Select 1: ALERT TRIP LEVELS & follow on-screen instructions, selecting loop & device no.
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 1 : 2 : * N E T D X T P ANE L DE LAY S * * I ME ON / O F F E LAY P ER I OD T P AGE # QU I T Setting the output delay time. Press # to set 1 to 10 minutes.
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 UMB E R D I S P LAY OF D I S P LAYS * 0 1_ * = ENT E R , # = DE L E T E Displays current status 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.
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.
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.
(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) Press “Silence Alarms” and “Reset”. (iv) Repeat steps (5.4.1) to (5.4.3) for the second and any subsequent alarm circuits. 6.4.
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.
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: System operating voltage: Quiescent current at 24V DC: Quiescent loop card current Loop card max.
NOTES: 1. 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. 2. Quiescent current is stated assuming mains failure conditions, therefore the general fault LED will be illuminated and the fault buzzer will sound. 3. The total current drawn by both alarm circuits operating must not exceed 2 Amps. 4.
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 Series 90 3-way I/O analogue unit Type Code 2 Condition Panel response Analogue Value Quiescent Input 1 operated Input 2 operated Input 3 operated Quiescent Input operated None Fire Input Remote fault None Fire AV = 8 to 44 AV = 55 to 127 AV = 45 to 54 AV = 0 to 7 AV = 16 AV = 16 Status bits (210) 000 1XX 01X 001 000 001 Series 90 1-way I/O unit 2 Series 90 switch monitor unit 2 Quiescent Input operated None Fire AV = 16 AV = 16 000 100 XP95 I/O unit 2 XP95 output unit Series
Device type Series 90 zone monitor Type Code 4 Series 90 control unit monitor 4 XP95 Miniswitch monitor 4 XP95 Switch monitor 4 XP95 Switch monitor plus 4 XP95 Zone Monitor 4 XP95 control unit monitor 4 XP95 Radio Interface 4 Condition Panel response Analogue Value Quiescent Fire Circuit fault Quiescent Alarm Circuit fault Quiescent Alarm Alert Circuit fault Quiescent Alarm Alert Circuit fault Quiescent Alarm Alert Circuit fault Quiescent Alarm Circuit fault Quiescent Alarm Circuit fault
Device type Series 90 optical smoke Type Code 5 XP95 optical smoke 5 XP95 beam Detector 5 XP95 flame detector 5 XP95 multisensor opt/heat detector 5 Series 90 heat detector 6 XP95 heat detector standard 6 Condition Panel response Analogue Value Quiescent Fire Alert Fault Quiescent Fire Alert Fault Quiescent Fire Alert Fault Quiescent Fire Alert Fault Quiescent Fire Alert Fault Quiescent Fire Alert Fault Quiescent Fire Alert Fault None Fire Alert Data fault None Fire Alert Data fault None F
Device type XP95 heat detector high Type Code 6 Series 90 callpoint/ callpoint monitor 7 XP95 callpoint 7 XP95 Mini switch monitor with interrupt XP95 USA mini priority switch monitor 7 7 Condition Panel response Analogue Value Quiescent Fire Alert Fault Quiescent Alarm Fault None Fire Alert Data fault None Fire Fault AV = 8 to 44 AV = 55 to 127 AV = 45 to 54 AV = 0 to 7 AV = 16 AV = 64 AV = 4 Quiescent Alarm Fault Quiescent Alarm Fault Quiescent Alarm Fault None Fire Fault None Fire Fault No
