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19 

MAN3037-2 

XP95 PRODUCT GUIDE 

11

 

XP95 Isolators 

 

The isolating base senses and isolates short circuit faults on XP95 
and Discovery loops and spurs. The base is loop powered, polarity 
sensitive and accepts the XPERT card to set the associated device 
address. 
 
In short-circuit conditions the integral yellow LED is illuminated. The 
detector associated with the base remains active under short circuit 
conditions.  Power  and  signals  to  the  affected  section  are  restored 
automatically when the fault is cleared.  
 
The  isolating  base  is  intended  for  use  with  equipment  using  the 
Apollo XP95 and Discovery communication protocol.  

 

11.1  Electrical Description  

 

Under normal operating conditions, a low impedance is present between the –IN and the –OUT terminals of 
the base, so that power and signals pass to the next base in line.  
 
If a short circuit or abnormally low impedance occurs, the fall in voltage is sensed and the base isolates the 
negative  supply  in  the  direction  of  the  fault.  The  isolated  section  is  tested  using  a  current  pulse  every  five 
seconds. When the short circuit is removed, the power will automatically be restored.  
 
If it is a requirement that no device is lost in the event of a single short circuit, every detector should be fitted 
to an isolating base. 
 
In  applications  where  it  is  not  necessary  to  use  an  isolating  base  for  each  detector,  up  to  twenty  (20)  or 
equivalent surge current may be installed between isolating bases.  
 
Stand-alone isolators, which have their own bases, may be used instead of isolating bases. The isolators are 
wired to a loop between detectors or other devices. 
 
For further information on the use of isolators in XP95 systems refer to Ampac Product Data sheet PDS201-
9001. 
 

11.2  Product Codes 

 

Product Description 

Product Number 

Item Number 

XP95/Discovery Isolating Base with Xpert Card 

45681-284AMP 

201-0125 

XP95/Discovery Isolator 

55000-720AMP 

201-0172 

XP95/Discovery Isolator Base (for above) 

45681-211AMP 

201-0006 

 
 

Summary of Contents for XP95

Page 1: ...XP95 Product Guide MAN 3037 ...

Page 2: ...eat Detector 11 7 1 Operating Principles 11 7 2 Electrical Description 12 7 3 Environmental Characteristics 12 7 4 Product Codes 12 7 5 Technical Data 13 8 MultiSensor Detector 14 8 1 Operating Principles 14 8 2 Product Codes 14 8 3 Technical Data 15 9 XP95 Manual Call Point 16 9 1 Operating Principles 16 9 2 Product Codes 16 9 3 Technical Data 17 10 XP95 Mounting Base 18 10 1 XP95 Mounting Bases ...

Page 3: ...l therefore respond well to the smoke from smouldering fires The detector also senses air temperature This temperature sensitivity allows the multisensor to give a response to fast burning flaming fires which is similar to that of an ionisation detector The multisensor can therefore be used as an alternative to an ionisation detector Where the environment is smoky or dirty under normal conditions ...

Page 4: ...unit XP95 Device Flag Tells the control equipment that more information is available Alarm Flag For accelerated alarm reporting Parity Error Check For received message accuracy Interrupt or Alarm Address Provides fast location of a device in alarm state High Level Integration ASICs technology for lower component count Zero Insertion Force Base For easier installation and maintenance Ease of Mainte...

Page 5: ...rradiates the air in both chambers to produce positive and negative ions On applying a voltage across these electrodes an electric field is formed as shown in Fig 2 The ions are attracted to the electrode of the opposite sign some ions collide and recombine but the net result is that a small electric current flows between the electrodes At the junction between the reference and smoke chambers is t...

Page 6: ...ncreases to produce an analogue signal An A D conversion of the signal from the ionisation chambers is carried out once per second or when either the detector or preceding address is being interrogated Whenever the device is interrogated this data is sent to the control equipment EN54 threshold alarm levels are calibrated within the processing ASIC If the device is not addressed within 1 second of...

Page 7: ...depends on the wind speed and on the orientation of the detector relative to the wind direction Relatively small changes in wind direction can cause significant changes in analogue value For wind speeds up to 1m s 200ft min the change in analogue value will not exceed 5 counts Continuous operation in wind speeds greater than 2m s 400ft min is not recommended However wind speeds up to 10m s 2000ft ...

Page 8: ... by the HSE for further details Storage regulations depend on local standards and the legislation but in the UK the number of ionisation smoke detectors in any building or premises shall be less than 500 See Certificate of Approval No TA3 of 1999 issued by the HSE for further details At the end of their recommended working life of ten years ionisation smoke detectors should b returned to the manuf...

Page 9: ...ge 500µA peak Power up Surge Current 1mA Maximum power up time 4 seconds for communications 10 seconds to exceed 10 counts 15 seconds for stable clean air value Clean air analogue value 25 7counts Alarm Level Analogue Value 55 Alarm Indicator Light Emitting Diodes LEDs illuminating red in alarm Optional remote LED Alarm LED Current 2mA Remote LED Current 4mA at 5V measured across remote load Type ...

Page 10: ...tor is connected to the incoming and outgoing supply via terminals L1 and L2 in the mounting base A remote LED indicator requiring not more than 4mA at 5V may be connected between the R and R terminals An earth connection terminal is also provided When the device is energised the ASICs regulate the flow of power and control the data processing The optical ASIC is controlled by the communications A...

Page 11: ... Schematic Diagram XP95 Optical Smoke Detector Figure 9 Typical Response Characteristic XP95 Optical Smoke Detector Figure 10 Typical Temperature Response XP95 Optical Smoke Detector 6 4 Product Codes Product Description LPCB EN54 7 SAI Global AS7240 7 Activfire AS1603 2 XP95 Optical Smoke Detector 55000 620AMP 4106 2001 201 0003 55000 630 XP95 Optical Smoke Black Detector 55000 660AMP 4106 2010 2...

Page 12: ...on internal 2 2KΩ resistance to positive Supply Voltage 17 28V DC Quiescent Current 340µA average 600µA peak Power up Surge Current 1mA Duration of Power up Surge Current 0 3s Maximum Power up Time 4 seconds for communications 10 seconds to exceed 10 counts 35 seconds for stable clean air value Alarm Current LED on 3 5mA Alarm Level Analogue Value 55 Clean air Analogue Value 25 7 counts Alarm Indi...

Page 13: ...etwork which provides a voltage output proportional to the external air temperature The standard heat detector will respond to increasing air temperature in such a way that it is classified as an A2S device providing 55 counts at 55 C See figure 13 A high temperature CS heat detector which can be installed in a typical ambient temperature of 55 C is available See figure 14 This device will give 55...

Page 14: ... a count of 55 is exceeded the alarm flag is initiated and the device address is added to the data stream every 32 polling cycles from its last polling for the duration of the alarm level condition except when an alarming device is being interrogated This can provide a location identified alarm from any device on the loop in approximately two seconds The detector is calibrated to give an analogue ...

Page 15: ... Level 55 Counts 55 C when measured under static conditions Alarm Indicator Light Emitting Diodes LEDs illuminating red in alarm Optional remote LED Alarm LED Current 2mA Remote LED Current 4mA at 5V measured across remote load Type Code 210 43 110 00 Storage Temperature 30 C to 80 C Operating Temperature 20 C to 70 C Guaranteed Temperature 20 C to 70 C no condensation or icing Operating Humidity ...

Page 16: ...esses the two signals The temperature signal processing extracts only rate of rise information for combination with the optical signal The detector will not respond to a slow temperature increase even if the temperature reaches a high level A large sudden change in temperature can however cause an alarm without the presence of smoke if sustained for 20 seconds The processing algorithms in the mult...

Page 17: ...gue value 23 4 0 Alarm level analogue value 55 Alarm Indicator 2 colourless Light Emitting Diodes LEDs illuminating red in alarm Optional remote LED Temperature range Max continuous operating 60 C Min continuous operating 0 C Min operating no condensation icing 20 C Storage 30 C to 80 C Humidity 0 to 95 relative humidity no condensation or icing Effect of Temperature on Optical Detector Less than ...

Page 18: ...hould recognise this response as a test signal and should not raise a general alarm XP95 Manual Call Points incorporate an integral short circuit isolator and are provided with a resettable element A backbox for surface mounting is also provided as standard If a glass or flush mounting tray is required these are available on request Versions with a pattress box are also available To provide additi...

Page 19: ...ck L1 and L2 Operating Voltage 17 28V DC Communication Protocol 5 9V peak to peak Quiescent Current 100µA at 24V DC Power up Surge Current 1mA Maximum power up time 1s Alarm Current LED on 4mA Normal analogue value 16 Alarm State Value 64 Temperature Range Maximum continuous operating 60 C Minimum continuous operating 0 C Minimum operating 20 C no condensing icing Storage 30 C to 80 C Humidity 0 t...

Page 20: ...s isolated and can be used to provide continuity of an earth or shield Universal address cards known as XPERT cards are supplied with all bases Consult the coding guide to determine which pips are to be removed Pre printed and pre punched address cards that save time and increase accuracy during commissioning are available in sets part number 38531 771 The base has a one way only fit and detectors...

Page 21: ...the fall in voltage is sensed and the base isolates the negative supply in the direction of the fault The isolated section is tested using a current pulse every five seconds When the short circuit is removed the power will automatically be restored If it is a requirement that no device is lost in the event of a single short circuit every detector should be fitted to an isolating base In applicatio...

Page 22: ... to the intelligent reflective beam detector The termination backbox can be surface or flush mounted Product Description Product Number Item Number XP95 Reflective Beam 5 50M Detector 55000 268APO 201 1074 XP95 Reflective Beam 50 100M Detector 55000 273APO 201 0171 13 Loop Powered Sounders Beacons Sounder Beacons There are two types of loop powered sounder available allowing fire engineers to spec...

Page 23: ...d NZS4512 and Europe EN54 3 and incorporates synchronisation of continuous and pulsed tones This ensures the integrity of the alert signals tones from different sounders do not merge into one signal that could be mistaken for an Evacuate signal A nominal sound output of 96dB is achieved at a current consumption of 5mA while the acoustic self test feature enables the sounder to listen to itself whe...

Page 24: ...s The Intelligent Open Area Sounder Beacon is a loop powered wall mounted device offering a choice of three tones Australian AS1670 4 New Zealand NZS4512 and Europe EN54 3 and incorporates synchronisation of continuous and pulsed tones A nominal sound output of 100dB is achieved at a current consumption 8mA The beacon is activated whenever the sounder is active and cannot be controlled separately ...

Page 25: ...t industrial environments Generic Emission Standard EN 61000 6 4 Emission standard for industrial environments EN 50130 4 Alarm Systems Electromagnetic compatibility product family standard Immunity requirements for components of fire intruder and social alarm systems EN 6100 4 2 Electrostatic discharge EN 6100 4 3 Radiated immunity EN 6100 4 4 Fast transient bursts EN 6100 4 5 Surge immunity EN 6...

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