CPA240 Power Amplifier Manual: V1.31
Contents
1. Amplifier removal tool points c Designation fixing screw y I an O AJ A Audix CJ o0S 3 4 Systems gt Cpa240 jy Um 111 Power Amplifier 7 Amplifier p P mo E s GC une Fail No C s 4 turns pull i Sig Line Earth eae pull unit forward CH CH CH if unit forward E um Ch2 J m T M pea ti eov Ch 1 l ps oss a J Ch ei EN Ch4 i j AN T J Amplifier Removal Aid Fitting Amplifier Designations The CPA240 amplifier features two captive nuts that may be o Ka EE u as a removal aid ENER the om Ground Zone 1 E Slave J F First Floor Zone 2 3 1 Second Floor Zone 3 J 4 IHE REMOVAL AID MUST NOT BE USED TO LIFT THE AMPLIFIER M S e SS 2 7 IISYSTEMS Page 14 of 35 21031 CPA240 manual V1 31 doc CPA240 Configurable Power Amplifier 3 5 Audio Bus Adapter The Audio Bus Adapter provides a conversion between the two output D type connectors on the Alpha matrix controller or V32EBPU bypass unit and the single 40 way ribbon connector bus of the CPA240 amplifier One adapter card is required per matrix controller and is to be mounted on the first amplifier to which that matrix is connected The kit also includes two CASO ribbon cables that connect from the adapter card ribbon header to the D type plugs Screw terminals on the adapter card provide a connection for the amplifier wa2. Amplifier 1234 151311 9 7 5 3 1 Audio Bus sw2 W sw3 W sw4 E Channel P EEEE q BERR Channel Chain BE 161412108 6 4 2 CH2 CH3 CH4 Sed MM Mim Selector Cable 4 off mm mEEMN D804 Connector Card Slave Master Slave Master Slave Master Output Stage Fusing Fuse CH1 Fuse CH2 Fuse CH3 Fuse CH4 Slave Slave Slave CH2 CH3 CH4 Master Master H Master D801 Power Block 2 Amplifier Link Gain Trim E 2 fel fel fs c uo ee T n oO m tee Amplifier Link Not Fitted goose ee remove for Slave Amp S S t s D800 Control Card E e oz 1008 H op 1028 SGe z e cH1 028 H CHa 1008 H Always Wakeup Channel 1 Channel 2 Channel 3 Channel 4 4 2 Master Slave The CPA240 amplifier is equipped with four individual 60 Watt channels Setting of the master slave selectors allows the channels to be paralleled providing 60 120 180 amp 240 Watt configurations There are two master slave selectors per channel they are located on the Power Block D801 and rear connector card D804 CH2 selects channel 2 as a master or slave etc Note Both switches on a channel MUST be set to the same position When wiring to a paralleled amplifier the input and output signal cabling is to be connected to the master channel only 4 2 1 Master Slave Configuration Examples 4 x 60 Watt Set all Master Slave switches to master factory setting Wire configure channel 1 input output signals to amplifier channel 1 etc
3. sess enne nnne nnns nenas 35 13 5 BACK UP SUPPLY CONNECTOR DGCHEMATI nene nnnnnnnenhhn etes sn nnns nnns s 36 14 ELECTRICAL SGHEMAT IG icu gue Serge omar E e ERC eeh ENEE qula Raw Eege 38 15 DETAILED BLOCK DIAGRAM eene mensa nana ana KREE anda uada saam sa aa R4 RR 44 na nr EN 39 APPENDIX A Amplifier Fail Disable PA Only we Page 5 of 35 gt d z Quat 21031 CPA240 manual V1 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier 1 Specification 1 1 Specification Audio CPA240 Power Amplifier Power amplifier channels 4 configurable Maximum Power 240 watts 1kHz 100V r m s Amplifier power configurations switchable 4 x 60W 1x120 2x 60W 2 x 120W 1 x 180 1 x 60W 1 x 240W Power amplifier channel enable Channel on off unused channel power save Frequency Response 3dBu 70Hz to 20kHz Distortion 1kHz at rated power Better than 196 THD Cross talk Better than 60dB Signal Noise 20Hz 20kHz rel to 100V Better than 85dBu Sensitivity 100V output OdBu 10dBu link option Volume control range 0 to 50dB Power Supply Mains supply V 230V AC 10 50 60Hz switch options Backup supply input 24V DC nominal To be fused at source 25A max Power Consumption max 4 x 60W 510W Amplifier idle amp quiescent consumption Idle Quiesce
4. 4 Output o Bus i p 1 Ch 1 VP E Transformer i Ch 1 Wak I Chain 1 BEE Link e Keup Overload gt e oh e l Normal detector Overload 77 HS Biba ormai E Ly ChX Sigl Presdnt l Send 1 A Detect and ed Y Ch 2 Slave OP Switch Si 88 82 ee us ip 3 82358 BSE 2505 Eg l Bus i p 4 l Slave Ka us Up 4 i Master Ch 2 Ch 2 Feedback cha I I 0 Monitor Ch2 I l Power iba Jack e 100V o o i i Stage ine 97 97 9 Busips Ch 2 Drive Output I Ch 2 VP F Transformer l l Ch 2 Volume or 88 Bus i p 6 Chain2 o Overload Do 2 9 l detector Overload ot lo 7 O Bus i p 7 See Idle current fT on Che Are Ch 3 Slave OP Switch i detector Amp Fail NEEDS SES Timer and l 8285 83 3 JAC l 235 285 977 TOTE NS Bus i p 8 2 z Slave S Master Ch 3 Ch 3 Feedback Ch 3 I I e Monitor Ch3 ez oe Bus i p 9 Bower Jack LS 100V I I E Stage N Output Line Monitoring g I l Connection Points Ch 3 IP o See Transformer le 7 ke Bus i p 10 Ch 3 Volume BUS SE E Chain 3 Bias Control ene ai c S NS Bus i p 11 x D Send 3 od Signal crs Amp Y ch4slave OP Switch I y 1 v Detect and Cha Fault l l tos FES pend Timer ana AF3 7 7 Bus i p 12 l 298 SS al Smet Latch ANF3 I O2605 35 Ve s H I l 97 Sr NO Bus i p 13 Master Ch 4 Shs Feedback Ch 4 I bch Ee 1
5. Ch 2 Slaving o p Switch Monitor jack Monitor jack O Channel 2 O P Line Monitor Option o Y Ch 3 Slaving o p Switch O Channel 3 O P Line Monitor Option Ch 4 Slaving o p Switch Monitor jack O Channel 4 O P Line Monitor Option 7 ANS Qual J 7 IISYSTEMS Mr Page 10 of 35 21031 CPA240 manual V1 31 doc CPA240 Configurable Power Amplifier 3 2 Connections From From Matrix Bypass Outputs m S KE 4 m From ITP100 Output Po
6. Signal pairs appear to be in a non standard configuration This is due to the Alpha Matrix Controller connector type and orientation Function Signal Return Screen ITP Wake up 1 Alpha Wake Up 2 z Input Bus Channel 1 33 34 Input Bus Channel 2 31 32 2 Input Bus Channel 3 29 30 S Input Bus Channel 4 27 28 Input Bus Channel 5 25 26 S Input Bus Channel 6 23 24 s Input Bus Channel 7 21 22 S Input Bus Channel 8 19 20 Input Bus Channel 9 17 18 Input Bus Channel 10 15 16 Input Bus Channel 11 13 14 Input Bus Channel 12 11 12 Input Bus Channel 13 9 10 Input Bus Channel 14 7 8 Input Bus Channel 15 5 6 Input Bus Channel 16 3 4 13 2 Audio Outputs Connector 10 way in line socket PCB mounted D804 PL9 Function Signal Signal Return name Amplifier Channel 1 Output 1 2 Amplifier Channel 2 Output 3 4 Amplifier Channel 3 Output 5 6 Amplifier Channel 4 Output 7 8 Future connection FMS_OVR 9 Chassis Earth CHS 10 Al Page 34 of 35 gt d z Quat 21031 CPA240 manual V1 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier 13 3 FMS Bus Connector 2 x 16 way IDC header PCB mounted D804 PL1 PL2 Function PL1 PL2 Signal from FMS bus To FMS ter
7. e Quat 21031 CPA240 manual V1 31 doc 7 TISYSTEMS M CPA240 Configurable Power Amplifier If the CPA240 is to be moved the appropriate lifting code of practice should be followed Approximate frame weight in kilograms 15Kg Warning The amplifier frame is heavy 11 Maintenance Although the CPA240 requires little or no maintenance the Public Address or Voice Alarm System to which it is installed may require regular scheduled maintenance For BS5839 compliant Voice Alarm systems please refer to BS5839 Part 1 Code of practice for System design installation and servicing for recommend maintenance levels It is recommended that all members of staff should be urged to report problems with the Public Address or Voice Alarm system i e distortion speakers not operating poor coverage to the department responsible for the maintenance of such equipment 12 Component Reference Numbers Assembly part No PCB No Description 125 585 974 D800 Control PCB Assy 125 585 975 D801 Output Heatsink PCB Assy 125 585 976 D802 Power Supply PCB Assy 125 585 978 D804 Connector PCB Assy 125 500 836 N A Output Heatsink Power Block Assy 125 500 837 N A Power Supply Assy wl Page 33 of 35 gt d z Quat 21031 CPA240 manual V1 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier 13 Rear panel pin outs 13 1 Audio Input Bus Connector 2 x 40 way IDC header PCB mounted D804 PL5 PL6 Note
8. 125 121 171 Earth wire 3 3 C eo i Earth f a J ma Lp stug 125 121 165 26 Way ribbon fault output A P WEG c i of EN 25 121 172 Earth wire f e Mains fuse N d HRD 4A T iN Back up supply E Automotive blade b use 25A d Back up supply inlet mbly 25 121 163 SC Page 38 of 35 2 Quat 21031 CPA240 manual V1 31 doc 7 IISYSTEMS MU CPA240 Configurable Power Amplifier 15 Detailed Block Diagram eerste Ch 4 Overload Ch4 Amp Fault OverTemp 2 OTNF S Heatsink Fault OTAF D804 Assy D800 Assy won gt esse Temp D801 Assy D800 Assy D804 Assy AlphaWakeUP Qurtemp sensor ITP WakeUp O Audio Link lO o o GE d a dE ER Cha lpha Outputs Internal Patch Field Link Diff Amp Ch 1 Feedback Oo Monitor i Pun 16 ccts for Input Configuration Ch 1 Volume Driver aster VP Stage PA Power dock Line O P Bus In Out Balanced Audio I
9. 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier 6 Mains Voltage Selection The CPA240 amplifier is provided with a mains voltage selector This selector allows the amplifier to produce optimum power output without the risk of over temperature shutdown due to excessive heat dissipation Note It is critical that the mains voltage selector is adjusted to the correct setting Main Voltage Selector V a c ooo ON NN N Front of Amplifier ep CHE um Access hole in side of chassis 6 1 Setting Mains Voltage Selector e Using a DVM measure the incoming mains voltage to the amplifier or equipment rack e Setthe amplifier voltage selector to nearest resulting position see table e Repeat setting for all other amplifiers in the equipment rack Voltage Voltage selector setting measured 208 229 220 230 239 230 240 253 240 If the voltage selector is incorrectly set the amplifier may shutdown due to excessive heat dissipation or even be permanently damaged Therefore it is crucial that the selector is set correctly S Page 25 of 35 s Cudi 21031 CPA240 manual V1 31 doc 7 TISYSTEMS Wty CPA240 Configurable Power Amplifier 7 Fault Monitoring Features Audix offers the opportunity to monitor the critical audio path of public address and voice alarm Systems This monitoring is carried out using the Fault Monitoring System or FMS The FMS sys
10. Should this current flow be interrupted for more than 100 seconds a channel fail will be displayed on the front panel The over temperature indicator denotes that the amplifier has been shut down due to excessive heat in the power block heatsink Sv Page 26 of 35 e Cudi 21031 CPA240 manual V1 31 doc TISYSTEMS willy CPA240 Configurable Power Amplifier Although the amplifier will recover once the amplifier has cooled the over temperature indication will remain to inform service personal of its occurrence These fault indications are also repeated at the FMS master panel and may be reset by activation of the FMS fault reset ec Page 27 of 35 e Cudi 21031 CPA240 manual V1 31 doc 7 IISYSTEMS SM CPA240 Configurable Power Amplifier 8 Rack Mounting the CPA240 The amplifier is specifically design to be mounted into 19 equipment racks Four fixing points are provided to retain the amplifiers horizontal position However the CPA240 s weight must be supported by some means other than the aluminium front panel This can be achieved by fixed rails such as the Audix rack runner product 570 507 006 or a sturdy shelf The support system must not cover the amplifiers ventilation slots and be capable of carrying at least three times the amplifiers weight i e 45kg With the amplifier in place it should be secured to the equipment rack using four M6 fixing screw or similar Please also refer
11. Wire configure channel 2 input output signals to amplifier channel 2 etc Wire configure channel 3 input output signals to amplifier channel 3 etc Wire configure channel 4 input output signals to amplifier channel 4 etc 2x 120 Watt e First amplifier group Set CH2 M S switch to slave this parallels channel 2 to channel 1 master IT Page 16 of 35 e Quat 21031 CPA240 manual V1 31 doc TISYSTEMS ly CPA240 Configurable Power Amplifier e Second amplifier group Set CH3 M S switch to master and CH4 to slave this parallels channel 4 to channel 3 master e Wire configure first amplifier group input output signals to CH1 master e Wire configure second amplifier group input output signals to CH3 master 1 x 240 Watt e Get all Master Slave switches to slave this parallels channels 2 3 amp 4 to channel 1 master e Wire configure channel 1 input output signals to amplifier channel 1 etc 4 3 Audio Bus Selector The Audio Bus allows an amplifier within a system to be connected to a switching matrix such as an Alpha and or other CPA240 amplifiers via a ribbon cables These ribbon cables couple the sixteen matrix outputs destinations or zones to the audio bus channel pin headers located on the D804 connector card within the amplifier Configuring each amplifier master input channel involves linking the desired Audio Bus channel matrix zone to the amplifier input channel using one of th
12. consumption would be 33 of the maximum Figures below indication the power consumption of an amplifier during nominal and fully power conditions Amplifier total 33 consumption Nominal power requirement Continuous tone at 100V load 33 for 2 hour into a full load 60W 1 7A 0 9A 5 0A 120W 3 3A 1 7A 10 0A 180W 5 0A 2 5A 15 0A 240W 6 7A 3 3A 20 0A Se Page 7 of 35 p Cudi 21031 CPA240 manual V1 31 doc 7 IISYSTEMS ML CPA240 Configurable Power Amplifier The nominal power consumption figure must not be used if a continuous tone alarm is employed 2 Description 2 1 Front View Line monitor option Amplifier designation cutouts ck fixing points line fail ker line earth fault Amplifier removal tool points Audix O Systems M gt cpa24l Ki p 111 Power Amplifier EE i i H i Amplifier cm one Fail ne Fail ne Fail one Fail No 6 C Sig Line Earth Sig Line Earth Sig Line Earth S i OQ EAR ona J cns Ext cha Sig Fal Ol JL I LS Channel headphone monitor jack ower amplifier channel overload Stondby battery supply fail Power amplifier channel fail Standb sattery charger fail znal present indicator Audic temperature Amplifier ove Channel volume control 2 2 Back View FMS bus from master FMS bus Standby supply
13. 2 1 Amplifier Audio EE 12 3 22 Audio BUS selector dee e ese rd eti ote ent s 12 3 2 3 Auxiliary Port Direct Audio Input 12 3 2 4 Auxiliary Port Insert ee e set te Dese deno ns 12 3 2 5 Auxiliary Port Amplifier Linking eese nennen nnns 12 3 26 Amplifier Ee EE 12 3 9 AMPLIFIER CIRCUITRY seni citer te ei tete ue ito bee rte e d er el e e pee inda 13 3 3 1 lee c ts 13 3 32 PoWer SIag8uo icd e pb dr id tbe eter laete n da 13 3 89 a3 Amplifier Protection oci tere seite e D neta o ena Dorn ERE 13 3 3 4 Amplifier Surveillance Low Power Idle amp Wakeun sess 13 3 4 AMPLIFIER DESIGNATION amp REMOVAL AID sees enne nennen 14 2 5 AAUDIO BUS ADAPTER 5 ciii eere ratae ree ee Eden Eeer 15 3 5 1 Wiring and Assembly Detail essent nan nnne 15 4 AMPLIFIER CONFIGURATION eesieeeeeeeneeen nennen nane nn natn n nnn nn insana sanitas atn n nsn nn ann 16 4 1 INTERNAL SELECTOR VIEW 16 4 27 MASTER SLAVE 1 prs hacia Hec ro dde EE HL Pod e mie edo 16 4 2 1 Master Slave Configuration Examples seen 16 4 3 AUDIO BUS SELECTOR TEE 17 4 8 1 Audio Bus Selector Configuration Examples sss 17 4 4 FAULT MONITORING DETTINGS sessi esee nennen nest terrens nnns inet 18 5 ADVANCED CONFIGURATION cessisse eeene nennen nsns nana nnn n nn nnns sitas ass natn nasa nnns 18 Bet SGHAINEEATURBE eoe eei BPO 18 5 2 CONNECTIN
14. G SIGNAL PROCESSORS INSERT SEND sss 18 5 3 VOLUME CONTROL GAIN OPTION ennemi treten rese nn nns nr tren nennen 19 5 4 LINKING AMPLIFIER FRAMES PARALLEL OGpOoUp nnne nenne 19 5 4 1 Wiring Grouped Amplifiers eese sienne nnne nnns 21 5 42 Amplifier Group Controller amp Slave Settings sss 22 5 43 Amplifier Group Gain Tim 22 5 5 CONNECTING LINE OUTPUTS nnne nennen rint nr intent en esr drin nene entente 23 5 6 AMPLIFIER LOW POWER IDLE amp WAkELUR ener nnne nennen 23 6 MAINS VOLTAGE SELECTION esseseeseeeeeneeen nennen nennt nnn tn ansia sanis se ennenen 25 6 1 SETTING MAINS VOLTAGE DGELECTOR eee nennen ener enr snnt nennen 25 MT Page 4 of 35 gt e z Quat 21031 CPA240 manual V1 31 doc 7 TISYSTEMS CPA240 Configurable Power Amplifier 7 FAULT MONITORING FEATURES e eeeseeeeeeasanenaa aa aa sana manas asas 44 a4 sa nsa R44 R4 nnmnnn 26 7 1 SUPPIEY MONITORING EE 26 dee VAMBEIEIER MONITORING es eben ege Eege eer ee a cT Feste de dco ER 26 8 RACK MOUNTING THE CPA240Q eecceeeeeeen enean nana nasa KREE asinus assa sa nsa EE R4 44 n4 KREE EN 28 H WARRANTY ee ERE 28 9 1 PERFORMANGE E de Eet oce Et Meet baa e e e d qnae Arco Seege 28 9 2 DELAYS IN DELIVERY nennen aaaea eaa aa daa sess ss nnt sess ss asa sad sedis a seda sang nsn da 28 90 39 e STORAGE gh iie ctetur etre tire ic Delo D meds e ea ith o
15. PA240s are used in conjunction with the ACA100 D805 Adaptor line level outputs from the Alpha are not easily wired To overcome this a 40W IDC Termination Panel Farnell 343 1915 can be used after the last amplifier to break out line level outputs The Termination Panel can be mounted on an ODP panel and field terminals wired direct D805 125 585 979 CPA240 Requirement 40W IDC Interface Module Farnell 343 1915 Screw terminals Line level Outputs Line level Outputs x 16 5 6 Amplifier Low Power Idle amp Wakeup In some circumstances the low power mode can affect low level background music reproduction To permanently wakeup the amplifier fit the Always Wakeup link Warning Permanently waking up the amplifier will drain battery supplies extremely quickly This option must NOT be used on Voice Alarm Systems unless addressed in the system design ec Page 23 of 35 2 Qual 21031 CPA240 manual V1 31 doc 7 IISYSTEMS M CPA240 Configurable Power Amplifier Where an amplifier is used for PA only not monitored the amplifier channel fault indications need to be disabled If this is not carried out the amplifier will display a fault on the front panel This modification reduces system monitoring and therefore must not be used on life safety systems This modification is ONLY for amplifiers using D800 Issue B we Page 24 of 35 gt d z Quat 21031 CPA240 manual V1
16. Vl N a Pd IISYSTEMS Audix Systems Station Road Wenden Saffron Walden Essex CB11 4LG Telephone 44 0 1799 540888 Facsimile 44 0 1799 541618 www tycosafetyproducts europe com www audixsystems co uk CPA240 Power Amplifier Manual V1 31 CPA240 Configurable Power Amplifier Revision History Version Modifications Date 1 0 CPA240 Configurable Power Amplifier 15 7 03 1 1 Safety information 17 12 03 1 2 D805 bus adapter card and additions 14 04 04 1 3 Add figures 22 03 05 1 31 Outputs not inputs in table 13 2 27 10 05 Copyright Audix Systems 2005 DISCLAIMER This manual contains information that is correct to the best of Audix Systems knowledge It is intended to be a guide and should be used as such It should not be considered as a sole source of technical instruction replacing good technical judgement since all possible situations cannot be anticipated If there are any doubts as to exact installation configuration and or use call Audix Systems at 44 0 1799 540888 ACKNOWLEDGEMENTS Windows Windows 95 and Windows 98 are trademarks of Microsoft Corporation All other trademarks are recognised ec Page 2 of 35 gt d z Quat 21031 CPA240 manual V1 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier Models Covered This user manual covers the following equipment e CPA240 Power Amplifier Technical Sup
17. a mating free connector that should be wired as shown below The connector will accept cable cross sections up to 4mm The ve and OV supply cables should be designed to take a minimum of 20A continuously The supply monitor terminal provides a means for the amplifier to detect the failure of the backup supply charger Where fitted the supply monitor cable may be equivalent to 16 0 2 Note The backup supply must be fused to 25A sis Back up Supply Connector of CPA240 AXE Be Terhi Supply Monitor MS SEO SUNS ems A Black Terminal S E 4 LL N OV Black Terminal erminal Battery Connector anc Details 1 is kit form 4 off cont off red t t 3 off black contact sockets off shell with strain relief and roll pin Cables and battery supply connector are not supplied 1 Strip each cab 2 Fit and crimp 3 contact into the red ct sockets imp into the cket e the contac jether in iding in the ith the first e of shell Hn s roll pin into t ENTATION OF CONTAC idi Fit strain relief er Page 36 of 35 Qual 21031 CPA240 manual V1 31 doc TISYSTEMS NIU CPA240 Co
18. annel i e an amplifier channel may be configured to any one output of the switching matrix Where the ribbon bus cannot be used due to special wiring requirements the auxiliary port D type connector allows solder type connection to be made Selector switches within the amplifier chassis set the master or slave configuration of each channel amplifier providing a range of power settings 4 x 60 Watt 1x 120 Watt amp 2 x 60 Watt 2 x 120 Watt 1 x 180 Watt amp 1 x 60 Watt 1 x 240 Watt Paralleling amplifier chassis is achieved by connecting the parallel output on the auxiliary port to the slave amplifiers The volume control of the master amplifier overrides the volume controls of the paralleled slaves ec Page 9 of 35 e Cudi 21031 CPA240 manual V1 31 doc 7 IISYSTEMS SM CPA240 Configurable Power Amplifier 3 Amplifier Features 3 1 CPA240 Simplified Block Schematic Channel 1 Amplifier Paralleling In Out Port Audio Bus Selector Link Matrix Auxiliary Port amp Audio Gi Overload Insert send Sig P t 4 ig Presen G9 Amp fault 16 Way Audio Ch 2 Slaving i p Ribbon Bus In from source Switch d Q Overload GI C9 Sig Present Amp fault Ch 3 Slaving i p Switch 16 Way Audio Ribbon Bus Out to next amplifier Overload Gi Sig Present Amp fault Ch 4 Slaving i p Switch Overload Q Sig Present Amp fault Monitor jack O Channel 1 O P Line Monitor Option
19. ated at 10A Careful consideration should be directed towards both the mains supply and distribution system loading the capacity of which must not be exceeded The Audix standby battery supply units Models SBS241 SBS242 or SBS481 all include a separate fuse on each 24V dc output The fuse rating on the feed to the CPA240 should be 25A fast acting F 25A Where 24V DC standby supply other than Audix range listed are used The DC feed to the CPA240 should be fused at source with a supply fuse rating of 25A fast acting F 25A H 10 1 3 Environmental During the normal operation of the CPA240 the amplifier can dissipate up to 270W The design of the enclosure must ensure that adequate ventilation provide so that the internal ambient temperature does not exceed 40 C Temperatures above this may cause the amplifiers shut down impeding audio output A minimum of a 1U space should be allowed above and below each amplifier for cooling Where standby batteries are fitted further consideration to the equipment rack internal ambient conditions should be taken Battery life is significantly reduced when they are subjected to temperatures above 25 C The CPA240 amplifier should not be exposed to dripping or splashing 10 1 4 Installation Installation of the CPA240 amplifier should be carry out in safe clean and dry conditions The equipment rack and supporting floor must be stable and able to deal with the significant weight exerted by the publ
20. connected in a parallel group to provide power for loads greater than 240Watts These connections are made using the auxiliary port See Amplifier Configuration 3 2 06 Amplifier Output The amplifier output plug and socket assembly provides screw terminals for four 100V loudspeaker circuits and monitoring zero volt connections The screw terminals allow conductors of up to 2 5mm to be connected Warning high voltages exist on these terminals ec Page 12 of 35 2 Qual 21031 CPA240 manual V1 31 doc 7 IISYSTEMS Mr CPA240 Configurable Power Amplifier 3 3 Amplifier Circuitry 3 3 1 Input Stage A four channel balanced input stage provides drive to the amplifier s power stage The gain of each channel can be adjusted via the front panel volume controls Signal present and overload LEDs provide signal status indication for each channel The signal present LED also indicates amplifier wakeup 3 3 2 Power Stage The amplifier power stage is designed as a removable heatsink assembly which allows for quick assembly and access to specialised settings This power block assembly includes four 60Watt power stages and input master slave switching 3 3 3 Amplifier Protection The amplifier s output stages are protected against both open circuits and loads that exceed the channel s rated power including short circuits A non latching thermal shutdown circuit provides protection against damage to the outp
21. e four two way selector cables supplied Note See advanced configuration for e Connecting two or more input channels to the same Audio Bus zone within a single amplifier Chain e Connecting inserting external signal processing equipment Send 4 3 1 Audio Bus Selector Configuration Examples 1234 D Wee 00000900 Chain Audio Bus Channel Send 00000000 9 16 Connecting matrix zone output 6 to amplifier channel 1 180W e Connect one end of the two way selector cable to header 6 of the Audio Bus Channel e Connect the remaining end to Amplifier Channel I P header 1 e First amplifier group Set CH2 amp CH3 M S switch to slave e Wire configure first amplifier group input output signals to CH1 master Connecting matrix zone output 8 to amplifier channel 4 60W Connect one end of the two way selector cable to header 8 of the Audio Bus Channel Connect the remaining end to Amplifier Channel I P header 4 Second amplifier group Set CH4 M S switch to master Wire configure second amplifier group input output signals to CH4 master S Page 17 of 35 Quat 21031 CPA240 manual V1 31 doc 1SYSTEMS ML CPA240 Configurable Power Amplifier 4 4 Fault Monitoring Settings The amplifier provides fault indications for its power sources e Mains e Battery backup supply e Changer These fault indications may be disabled by removing the appropriate li
22. e speaker circuit 2 x Amp Link fitted default 2 x Amp Link removed 2 x Amp Link removed 123 4 IP 0090 Chain O O O O Send 1 8 00000090 Audio Bus Channel 00000000 17 36 19 Aux Port ul ds Quid 1SYSTEMS XXV Page 21 of 35 21031 CPA240 manual V1 31 doc Zone 8 CPA240 Configurable Power Amplifier 5 4 2 Amplifier Group Controller amp Slave Settings The amplifiers in a group must be configured as e Group controller one only e Group slave Group Controller One amplifier within a group must be configured as a controller Once configured the controller amplifier provides the drive signal to all the other amplifiers within that group Channel 1 volume control on the control frame provides signal level adjustment for the entire group Group Slave The remaining amplifiers within the group other than the single controller must be configured as slaves These amplifiers receive their input drive signal from the group controller The volume controls for each input channel belonging to the slave group are disabled Setting Controller or Slave Configuration There are two Amplifier link headers located on the D800 control card see section 4 1 With links fitted factory setting the amplifier is configured as a controller To configure the amplifier as a slave to a controller these links should be remo
23. fu bus from switching source r Mains fuse 7 7 25A R KA SS Zo E BIB SS bus out uxiliary port ins inlet FMS bus to terminator pply amp charger amplifier 100V output Page 8 of 35 SH z Quat 21031 CPA240 manual V1 31 doc 1SYSTEMS CPA240 Configurable Power Amplifier 2 3 Brief Description The CPA240 power amplifier provides up to four channels of amplification for both public address and voice alarm applications The 100 volt line output stages are robustly designed and are protected against open circuits and loads that exceed the channel s rated power including short circuits A thermal shutdown circuit provides further protection of the amplifier s output stages The amplifier is equipped with a number of features that reduce system engineering and assembly times An amplifier audio bus replaces previously hand wired input cabling with a sixteen zone or destination ribbon cable A link matrix located within the amplifier allows the selection of a single zone destination from the ribbon bus to each amplifier ch
24. h marks on the amplifier chassis 10 2 2 Electrical Hazards High Voltages exist within this apparatus e 230V mains e 100V signals The CPA240 primary supply is 230v AC 50 60Hz This is connected by means of an IEC fused inlet This equipment does not include a mains isolation switch therefore the Mains and battery supply where fitted must be disconnected from the apparatus before any part of the casing is removed Mains and other high voltages can be exposed if internal covers are removed 100V signals are present both inside the amplifier and at the 100V line output connector Adequate precautions must be exercised when working on or around the amplifiers associated output cabling and terminals Battery Backup Where the CPA240 has a secondary supply i e 24Volt battery backup The battery supply must be also be disconnected before any part of the casing is removed 10 2 3 Heat Hazards During normal operation there is a potential temperature hazard in the centre section heatsink of the amplifier frame The CPA240 power amplifier heat sinks can become Very Hot This heat can also be conducted through the chassis and other parts Heat build up generally occurs when alarms and other high level signals have been broadcast for a long period of time Heat build up may also occur if the amplifier is faulty Warning The amplifier heatsink can reach temperatures of up to 80 C 10 2 4 Weight Hazards ea Page 32 of 35
25. hours of standby and LG hour of alarm broadcast Figures for 72 hour standby operation are also provided It is important that all unused channels are configured as slaves as this reduces battery consumption to a minimum i e an amplifier driving a 60watt load should be configured as a 240W Amplifier channel Consumption hour 24 hours total 72 hours total configuration 1 x master channel configured 140mA 3 38A 10 10A 2 x master channel configured 166mA 3 99A 11 95A 3 x master channel configured 192mA 4 61A 13 82A 4 x master channel configured 216mA 5 18A 15 55A 1 2 2 Operational Consumption The operational power consumption of an amplifier is effected by a number of factors e Speaker load e Broadcast level e Signal type Where the speaker load connected to the amplifier is less than its maximum rated power the proportion of power drawn will be reduced Similarly the level and signal or message type used during an alarm broadcast can also reduce power consumption Where a continuous signal is employed the consumption can be approximately calculated by the signal voltage across the load However voice alarm broadcasts often contain tone and voice signals Due to the nature of a voice messages and the gaps of silence that generally separates the alarm tone and voice signal the overall average consumption is further reduced Generally with normal site perimeters and a combined tone and voice alarm power
26. ic address and voice alarm equipment The CPA240 must be supported by some means other than the aluminium front panel this is achieved by fixed rails such as the Audix rack runner product 570 507 006 or a sturdy shelf Sv Page 30 of 35 gt e z Quat 21031 CPA240 manual V1 31 doc TISYSTEMS CPA240 Configurable Power Amplifier The support system must not cover the amplifiers ventilation slots and be capable of carrying at lest three times the amplifiers weight i e 45kg With the amplifier in place it should be secured to the equipment rack via the front panel mounting holes using four M6 fixing or similar screws we Page 31 of 35 gt d z Quid 21031 CPA240 manual V1 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier 10 2 Safety Considerations for System Maintenance Only a qualified and trained electronics engineer should be permitted to make any type of adjustment or repair to the Public Address or Voice Alarm System The following safety factors should be considered before attempting to maintain or repair the CPA240 e Electrical e Heat e Weight During the maintenance process all protective covers must be inspected for damage and correct fitment 10 2 1 Safety and Electrical Rating Information Information regarding fuse ratings and voltage requirements is provided on the top cover of the amplifier The location of high voltage terminals is indicated via British Standard high voltage flas
27. is made in full The Company reserves the right to repossess and paid Title of goods may not be transferred until all monies owing are paid full details of our retention of title clause are displayed in our sales office 9 9 Laws These conditions shall be governed and construed in accordance with English Law and shall be subject to the exclusive justification of English courts ec Page 29 of 35 2 Qual 21031 CPA240 manual V1 31 doc 7 IISYSTEMS Mr CPA240 Configurable Power Amplifier 10 Safety Considerations 10 1 Safety Considerations for System Design and Installation 10 1 1 Security To comply with electrical safety regulations CPA240 amplifier must be enclosed in a form of equipment rack or housing that is secure from access by all but trained and qualified personal Access should be controlled by means of a key or special tools 10 1 2 Electrical The electrical installation of which the CPA240 unit is part must incorporate an all pole mains isolating switch with contact separation of at least 3mm System design must provide adequate protection and insulation of both the mains and amplifier output lines which may exceed 100V The one metre IEC mains power cord supplied with the amplifier must be protected by 10A fusing Where other types of mains leads are necessary they must be BASEC or HAR approved with connectors complying with EN60320 The lead should also have conductor area at least 0 75 mm and be r
28. ke up signal where used options of positive and negative switching is available 3 5 1 Wiring and Assembly Detail From Matrix Bypass Outputs 1 8 9 16 Jl Jl From ITP100 Output Port 16 wake up ma i INPUTS 1 8 PUTS 9 16 I I r1 Lj l D l x ad H A J T Suggested Assembly Procedure 1 Place shakeproof washers on 2 off spacers and Y screw into threaded bushes on amplifier rear panel 2 Carefully locate socket header into PL5 and push in fully d 3 Secure pcb to 2 off M3 x 6 pan hd posi screws To Next and 2 off M3 Amplifier gt headers PL1 Ar PL2 Connect gnal source i e Alpha or Bypass unit 5 Connect fe tems the normal connection would be from ITP1C TB1 terminal 1 ITP wake up wl Page 15 of 35 2 Quat 21031 CPA240 manual V1 31 doc 7 IISYSTEMS SM CPA240 Configurable Power Amplifier 4 Amplifier Configuration 4 1 Internal Selector View
29. m end 2 Send 060 00000000 I S 9 16 H i Zone ERE RENE Send Return Amp 1 Aux Port 37W Zone 9B Amp 2 37w MEN Aux Port ve t mp TLTLTLTT Example shows connection of amplifier input 1 to direct to Zone 8 and input 2 to Zone 9A 9B via a Graphic EQ and 37W aux port Note Shorting the Send signal path will significantly reduce the signal level on the audio bus zone This will in turn affect all equipment connected to this zone 5 3 Volume Control Gain Option The nominal gain of the amplifier with the volume controls set to maximum is 42dB 0dB i p 100V o p An additional 10dB gain for each channel is available by fitting the CH 10dB link Links for each channel CH1 10dB CH2 10dB CH3 10dB CH4 10dB The link headers are located on the D800 control card lower front 5 4 Linking Amplifier Frames Parallel Group The CPA240 provides an amplifier linking or grouping facility via additional circuitry and the auxiliary port connector This allows a group of amplifiers to be paralleled giving increased power to a speaker circuit i e paralleling 3 x 180 Watt amplifiers could drive a 540 Watt speaker circuit The maximum permitted amplifier group is five frames i e up to 1200Watts General configuration e One amplifier within the group is set as a controller the other as slaves e Only channel 1 of the amplifier is linked while the other channels a
30. ment rack or suite Each amplifier is supplied with a single 40way ribbon cable The cable is connected from the amplifier audio bus input connector to the switching matrix where the amplifier is adjacent to the matrix or to the previous amplifier s audio bus output connector With the 16 matrix destinations essentially daisy chained to each amplifier an internal selector matrix allows a single matrix destination to be connected to an individual amplifier channel 3 2 2 Audio Bus selector The audio bus selector enables an amplifier channel to be configured to a single matrix destination or zone connected via the audio bus The audio bus selector is located inside the amplifier chassis on the D804 connection card 3 2 8 Auxiliary Port Direct Audio Input Alternative means to connect audio sources to the amplifier is provided by the auxiliary port The D type plug and socket arrangement allows bespoke cabling to be connected via solder joints 3 2 4 Auxiliary Port Insert In addition to the direct audio input connections the auxiliary port provides insert points for each amplifier channel This allows signal processing equipment to be connected or inserted into the input of the amplifier whilst retaining the efficiencies offered by the audio bus connection system The audio bus selector provides additional connection points for insert configuration 3 2 5 Auxiliary Port Amplifier Linking CPA240 power amplifiers can be
31. minator Cable monitoring daisy chain 1 NC IN Cable monitoring daisy chain 2 NO IN Cable monitoring daisy chain S 1 NC OUT Cable monitoring daisy chain S 2 NO OUT Reserved for future development 3 3 EMA Reserved for future development 4 4 FM spare 5 5 spare Watchdog fault bus 6 6 IWF Memory Misc fault bus 7 7 MF Amplifier fault bus 8 8 AF Power Input Mains fault bus 9 9 PF Surveillance Speaker Line fault bus 10 10 SF Battery fault bus 11 11 BF Accept Test mode control bus 12 12 AC Watchdog Pulse New Watchdog bus 13 13 WP New Fault bus 14 14 NF FMS_COM IN 15 16 FMS_COM in FMS_COM OUT 15 16 FMS_COM out 13 4 Auxiliary Port Channel Inserts Connector 37 way D skt PCB Mounted D804 PL4 Function Signal Return Screen Common overall screen 1 Channel 1 Send 2 21 20 Channel 1 Return 3 22 4 Channel 2 Send 5 24 23 Channel 2 Return 6 25 7 Channel 3 Send 8 27 26 Channel 3 Return 9 28 10 Channel 4 Send 11 30 29 Channel 4 Return 12 31 13 ALPHA WAKEUP 32 AMP FAIL 1 14 AMP FAIL 2 33 AMP FAIL 3 15 AMP FAIL 4 34 ITP WAKEUP 16 n c 35 Amplifier Link for paralleled group 17 18 36 37 19 7 IISYSTEMS Page 35 of 35 21031 CPA240 manual V1 31 doc CPA240 Configurable Power Amplifier 13 5 Back up Supply Connector Schematic A 24V DC backup supply can be connected to the amplifier frame to provide supply redundancy The amplifier is supplied with
32. nfigurable Power Amplifier Page 37 of 35 IT ES e E j 21031 CPA240 manual V1 31 doc 7 TISYSTEMS CPA240 Configurable Power Amplifier 14 Electrical Schematic The following diagram shows internal connections with safety critical components and assemblies marked 125 121 164 16 Way ribbon input r 5 975 D801 power block pcb N pcb j qumper FER S dz E am ei Ez H E BR d d j q H i q NE x fo e k gd N N di E q er NI Red 99199 3 N t K H aul 2 d4 r E p q GG J PL 3 PU o es T m iH Be i m B PL24 E i d Hd a O Sr f PL34 2 S E DA da PL3 d Ez FO J zi M d e KE S TOS A 7 Z J g
33. nk located on the D800 control card 5 Advanced Configuration 5 1 Chain Feature Each channel is provided with an additional header at its input so that another input channel may be connected to it The feature allows a zone connected to an input channel to then be Chained to a second input channel This can then be repeated for the other channels if required 123 4 1 8 m KE eege 000000099 Chain Audio Bus Channel Zone 1 Send 000000005 9 16 Example shows connection of amplifier inputs 1 2 amp 3 to Zone 1 Amps 1 2 amp 3 will be set as Masters 5 2 Connecting Signal Processors Insert Send Additional signal processing equipment can be connected into the audio bus amplifier path This is achieved by using a selector cable to connect the required audio bus zone to the appropriate channel Send Do not connect to the UP header This will route the selected audio bus zone to the auxiliary port connector Send output terminals The input of the signal processing equipment can then be wired to this output The output of the signal processing equipment can then be wired back into the amplifier signal path via the Direct Audio Input connections SM Page 18 of 35 z Quatx 21031 CPA240 manual V1 31 doc 1SYSTEMS CPA240 Configurable Power Amplifier 1234 1 8 S 0000000 l Chain 6 Audio Bus Channel
34. nt wakeup 1 x master channel configured 121mA 1180mA 2 x master channel configured 146mA 1210mA 3 x master channel configured 171mA 1250mA 4 x master channel configured 195mA 1260mA General Heat Dissipation max W 270W Dimensions length width Height in mm 19 Rack Width 2 U High 89mm x 480mm x 370mm Weight kg 15 kg Operating temperature range C O C to 40 C Humidity range 90 non condensing Standards Meets or exceeds the requirements of BS5839 Compliant with EMC standards EN 61000 6 1 2000 EN 61000 6 3 2001 Compliant with LVD safety standards BS EN60065 1998 Fusing Mains fuse rating 1 off 20x 5mm T4AH Battery fuse rating 1 off automotive blade F 25A Amplifier output stage fuse rating 4 off 20 x 5mm T 6 3A 7 IISYSTEMS Page 6 of 35 21031 CPA240 manual V1 31 doc CPA240 Configurable Power Amplifier 1 2 Battery Consumption Amplifier power consumption during a mains failure can be calculated by the duration the amplifier remains at standby plus the additional power drawn during its operation 1 2 1 Standby Consumption The table below details the amplifier battery standby consumption for the four possible master slave configurations Standby consumption is the power used by an idle amplifier during a mains power failure During a mains failure voice alarm systems are generally expected to provide 24
35. o Monitor f 1 Jack l l Ee o o i 9A 387 NS Bus i p 14 VCA LA ud l Ch 4 VP F Transformer Pediat ae Ch 4 Volume Ei Z N USNR TG Chain 1 Overload gt ei Ch4 Op NS G Geer eg detector t E s Amp Fail Timer and AMI ML 1 YSTEMS Page 39 of 35 21031 CPA240 manual V1 31 doc CPA240 Configurable Power Amplifier APPENDIX A Amplifier Fail Disable PA Only Where an amplifier is used for PA only not monitored the amplifier channel fault indications need to be disabled If this is not carried out the amplifier will display a fault on the front panel This modification reduces system monitoring and therefore must not be used on life safety systems This modification is ONLY for amplifiers using D800 Issue B To disable the amplifier channel fault indications a link wire can be connected between J4 pin 1 and J5 pin 2 on the D800 amplifier control PCB This modification disables the channel fault timeout and therefore the channel fault indicators D800 Control Card 2 2 s c LI o c o FIT WIRE LINK to disable amp fail CH4 10dB J4 Always Wakeup Channel 4 sn Page 40 of 35 G Quat 21031 CPA240 manual V1 31 doc T 18YSTEMS MU
36. or E D ca 28 9 4 DAMAGE OR LOSS IN TRANSIT UK 28 9 5 DAMAGE OR LOSS IN TRANSIT EXPORT ssssessssseseeee eene nnne nnne nnns 28 9 6 LIABILITY FOR DErECTg sensns nnt sisse ssa sanae sessi ases asa naga Enna 29 9 79 ENVIRONMENT ee E ege eeh 29 9 8 Han D Ce e TR 29 SPAM CETTE 29 10 SAFETY CONSIDERATIONS ticus ce c oonacuvvh ENNEN deeg NS Ee 30 10 1 SAFETY CONSIDERATIONS FOR SYSTEM DESIGN AND INSTALLATION eene 30 UG Mt is re p RU et p NEL s Ee be er Ros 30 10 1 2 ElectriGal eR eiectus dt ees edes 30 10 123 Envitonmentab uod etes teste estado tutos AEE TTT 30 fe InstallatiOmnu ui ost hs E Tie et aa Mte totos 30 10 2 SAFETY CONSIDERATIONS FOR SYSTEM MAINTENANCE enne en enis 32 10 2 1 Safety and Electrical Rating Information sene 32 10 2 2 Electncal Hazards a nhi du EM 32 10 2 9 EE EE teet er edes A e Uu Les as hd te 32 10 2 4 Weight Hazards attt HE ehe ide ooo eost e 32 11 Plaid t iedlmemeeELE 33 12 COMPONENT REFERENCE NUMBERS eeeeeeee nenas aa numum aaa aa aa sana ra REENEN 33 13 REAR PANEL PIN OUTS esseeeceeeeee nena namunnasaa aa ausa sanus aa a3 RR 44 24 a sS EE RR 4 n4 aar EN 34 134 AUDIO INPUT BUS aee eee cha redde el evt reto ea eode ge ede e Ee EE 34 13 2 AUDIO ei up EE 34 13 3 EMS BUS tee EE ux ee ae Ce eoe det pu dev d pedem AEN 35 13 4 AUXILIARY PORT CHANNEL INSERTS
37. port Should you require technical assistance regarding the CPA240 Power Amplifier or any other Audix Systems product please contact our Technical Services Department Audix Systems Station Road Wenden Saffron Walden Essex CB11 4LG Tel 01799 540888 Fax 01799 541618 Corporate website www tycosafetyproducts europe com we Page 3 of 35 gt d z Quid 21031 CPA240 manual V1 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier Table of Contents REVISION HISTORY uc ITE 2 MODEES COVERED 5 22 neuer ILU dL noucvabetectanetes 3 TECHNICAL SUPPORT ertet tetur ee EE een niee 3 APPENDIX A AMPLIFIER FAIL DISABLE PA ONLY 5 E SSPECIFICATION rcm H 6 Atu SPECIFICATION ismini E a 6 12 BATTERY CONSUMPTION 1er e ee Gages aia Pee ct b epe de vue d aeta ieee 7 1 2 1 Standby Consumption ssie ana b a o e p Pt Ere Hen 7 1 2 2 Operational Consumption essi siis sesenta 7 2 SDESCRIP TION Mans E 8 SL FRONT VIEW in icc te Rf eR UU LS Ie feat ics 8 2 2 BACK VIEW ss iiic ce dad f aate ette elected ttd et Uf ca ace tates 8 2 9 BRIEF DESCRIPTIONS iesse i aa an a a a aa aa E EEN 9 3 AMPLIFIER FEATURES iat rne a AA aaaeeeaa ara adanida aieas 10 3 1 CPA240 SIMPLIFIED BLOCK GCHEMATIC nennen nnne enne 10 3 2 ee ene E rco Eh ten tel toti fb ede IR inca 11 3
38. re configured as slaves to required power see master slave section e Only channel 1 volume control of the control amplifier adjusts the group level e The output of each amplifier within the group is paralleled using the speaker circuit output cable manually wired e All amplifiers within a group must have the same power configuration i e 180 Watts e All amplifiers within the group must be adjusted to have an identical power output er Page 19 of 35 Qual 21031 CPA240 manual V1 31 doc TISYSTEMS ML CPA240 Configurable Power Amplifier e Each amplifier within the group must be connected together via the link feature Page 20 of 35 IT Quabc E 7 21031 CPA240 manual V1 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier 5 4 1 Wiring Grouped Amplifiers Input Wiring Each amplifier within a group should be linked using twin screened cable and the auxiliary port connectors Two signal terminals paralleled two return terminals paralleled and a screen terminal are provided on the auxiliary port to allow the linking cable to be daisy chained Note The screen of each link cable should only be connected at the source end the other end should be isolated Function Signal Return Screen Amplifier Link 1 17 36 19 Amplifier Link 2 18 37 N C Output Wiring Output 1 of each amplifier within a group should be connected in parallel to th
39. rt 16 wake up i N Le D805 A 4 Y Adaptor Wen 4 c o0 AG a eM e LC f S S Back up Mains Ji i a Ed d To Output m i HE A Termination ez Panel n Casa i f S II ci QUT LIEN Urt d i J SH D H fe J Back up Mains Jj Ir ee ae To Output o M J Termination lt n E Panel Sa ll ll To To Next FMS EOL Amplifier Schematic shows a typical system connection with D805 audio bus adapter card to convert matrix controller D type cables to the CPA240 audio bus see Audio Bus Adapter section The subsequent amplifiers controlled by that matrix are then connected via the 40 way audio bus cables A wake up connection is also shown The upper amplifier is shown with output channels 1 amp 2 in use This would correspond to 2x60W or 1x60W 1x120W or 1x60W 1x180W configurations The lower amplifies output channel wiring corresponds to a 1x180W 1x60W configuration The CPA240 amplifier is supplied with a one metre IEC plug to socket Mains flex and a battery connector kit see Back up supply connector section for wiring and assembly details gm Page 11 of 35 Quat 21031 CPA240 manual V1 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier 3 2 1 Amplifier Audio Bus The amplifier audio bus provides a means by which 16 matrix outputs or destinations such as those provided by the Alpha matrix controller can be connected simply to CPA240 amplifiers within an equip
40. tem offers a wide range of monitoring options Audio path Serial data link Control contacts Amplifier Mains and battery supplies Voice alarm systems that comply with BS5839 Part 8 1998 require all of the above to be monitored on critical paths and components Critical paths are those paths through the voice alarm system that rely on equipment and the connections between them to achieve a voice alarm broadcast As the CPA240 amplifier forms a major part of this path it is therefore a critical component and must be monitored Note If a voice alarm system is to comply with BS5839 Part 8 1998 and any other standard it must be specifically designed to achieve that end 7 1 Supply Monitoring The amplifier provides fault monitoring of the primary and secondary power supplies e Mains e Backup supply 24V DC Battery Indication of supply failure is in the form of the following front panel LEDs e Mains supply failure e Battery supply low voltage failure e Charger failure fault signal from external charger Detection of these faults are repeated to the FMS unit Indication that power is present from either of the supplies is in the form of a green power on LED 7 2 Amplifier Monitoring Further to the supply monitoring the CPA240 provides the following fault monitoring e Each power stage e Over temperature The power stage monitoring detects the failure of critical power devices by measuring current flow
41. the case of F O B F A S and C amp F contracts or beyond the point of delivery stated in the quotation in C I F contracts Sv Page 28 of 35 gt d z Quat 21031 CPA240 manual V1 31 doc 7 IISYSTEMS CPA240 Configurable Power Amplifier 9 6 Liability for Defects Liability in respect of any defect in or failure of the goods or equipment supplied or for any loss damage or injury attributed thereto is limited to replacement or repair of defective design materials or workmanship within a period of 12 months of despatch or commissioning Provided that the commissioning takes place within 6 months after dispatch and PROVIDED THAT such defected parts are promptly returned carriage paid by the Customer to the Company unless otherwise arranged The right to make a charge for labour handling expenses and return carriage on the repaired or replacement parts is reserved The Company shall be under no liability in contract tort or otherwise for any personal injury loss or damage or whatsoever kind of howsoever caused or for anything done or omitted in connection with the goods or equipment or any work in connection therewith 9 7 Environment The Company cannot be held responsible for any defects arising from humidity and excessive temperatures The products are designed for use at normal room temperatures typically in the range 15 c to 21 9 8 Title of Goods All items remain property of the Company until payment for the goods
42. to the Safety Considerations section 9 Warranty 9 1 Performance Any performance figures given by the Company are based upon Company experience The Company will accept no liability if those figures are not obtained unless specifically guaranteed subject to the tolerance and rejection limits applicable to such figures 9 2 Delays in Delivery If delivery is delayed at Customer request the Company reserves the right to increase its price to cover the extra cost of storage insurance and interest Interest will be at the rate of 396 above Bank of England base rate per month calculated on a day to day basis for the value of the goods held 9 3 Storage Where equipment is stored on site prior to installation it is the Purchasers responsibility to ensure the safety and good condition of the equipment Any damage to equipment on Site shall not prejudice payment by the due date 9 4 Damage or Loss in Transit UK When the price quoted includes delivery or where this is specifically charged the Company will repair or replace free of charge goods damaged in transit provided that the Company and the carriers receive written notification within 3 days of delivery The Company must be informed in writing within 14 days of your receipt of our advice of dispatch if any goods are not delivered 9 5 Damage or Loss in Transit Export The Company will not be responsible for any loss or damage to goods which occur beyond the point of shipment in
43. ut stage due to overheating The front panel Temp LED indicates amplifier over temperature Ultimate protection of the MOSFET power devices and the power supply is provided by individual 6 3AF channel fusing 3 3 4 Amplifier Surveillance Low Power Idle amp Wakeup In an attempt to reduce standby battery usage to a minimum in normal operating mode the amplifier shuts down when not in use To allow continuous and reliable monitoring of the amplifier and loudspeaker lines the amplifier is periodically enabled or Woken up The wake up signal is provided by the matrix controller approximately two seconds before the matrix routes the 20kHz surveillance pulse This allows adequate time for the amplifiers power stage to reach its normal operating quiescent condition Once the surveillance signal has passed through the system the wake up signal is removed The surveillance procedure is repeated every 30 seconds If required the low power mode can be disabled See advanced configuration IT Page 13 of 35 2 Qual 21031 CPA240 manual V1 31 doc 7 IISYSTEMS Mr CPA240 Configurable Power Amplifier 3 4 Amplifier Designation amp Removal Aid The CPA240 front panel features both removal aid points and designation cut outs The designation feature allows a cost effective printed pager label to be fitted to the amplifier without glues or tapes See method statements below
44. ved 5 4 3 Amplifier Group Gain Trim To provide maximum power output and prevent damage to the group the open circuit gain of each amplifier must be matched to within 0 1 Volts Method Configure the amplifiers as an amplifier group as described in the previous sections Disconnect amplifier 100V output system cabling Connect a suitable test signal to input channel 1 of the group controller i e OdBu 1kHz Check that output 1 of each amplifier within the group with the volume control set to maximum is approximately 100V 5 RMS if not locate and repair problem e Measure and note channel 1 output of the group controller to two decimal places i e 99 35V e Now measure and adjust the second amplifiers output using the trim control located on the D800 control card to within 0 1V of the group controllers output i e 99 35V e Repeat of each amplifier in the group e Recheck that the output of each amplifier is within 0 1V of the others e With all amplifiers matched reconnect all output cabling and test system If possible before connecting the system cabling load the amplifier group to prove the maximum power output is available Note A small drop in the actual power output compared with the calculated output is expected due to losses to the paralleling process SS Page 22 of 35 2 Qual 21031 CPA240 manual V1 31 doc 7 IISYSTEMS My CPA240 Configurable Power Amplifier 5 5 Connecting Line outputs If C
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