System 9000Alarm Annunciator

Ultimate flexibility and reliability in a rack-mounted format

Exclusive ASIC/micro-controllertechnology

Multi-redundant design (nosingle point of failure) includingPSU and communications

Modular, rack-mounted designexpandable to thousands ofalarm points

Fully field programmable usingthe integral Setup Card or RTKconfiguration software

Alarm sequences to ISA-S18.1-1979 (R 1984)

Wide range of displays includingmimic diagrams, LED light boxes

The System 9000 Alarm Annunciator offers the latest incombined ASIC/micro-controller technology to provide anannunciator of unparalleled reliability and programmability.The system gives flexibility and security at a cost-effectiveprice.

A unique “multi-redundant” design is used in the System9000 which avoids the need for a central controller andalso provides “multi-redundant” PSU and communications.

The programming flexibility means that users can easilyconfigure hundreds of options including alarm sequence,time delays, relay operation, first-up grouping,functionality, communications etc. The range of displaysto complement the System 9000 is also extensive, fromthe ultra-bright LED illuminated P725LO, hazardous areadisplays and alarm management software screens.

Features & Benefits

With the continued improvements inthe complexity of process plantscombined with the pressures to strivefor greater operating efficiency, it iseven more important that alarmannunciators offer the clearest meansof showing alarms combined with thebest reliability and highest integrity.

RTK has designed the System 9000rack mounted alarm system with thisin mind. Based on the field provenand highly acclaimed range of panelmounted Annunciators, the systememploys exclusive ASIC and micro-controller technology with additionalsafety, communications andconfiguration facilities.

Total ConfigurabilityAll the facilities are field programmableusing the in-built keypad or downloadedfrom a pc using RTK’s Setup Software.

All features are configurable for eachindividual alarm way and can easily beset up in minutes without the need tolearn a special programming language.

All the alarm sequences specified in theISA publication “AnnunciatorSequences and Specifications” areavailable in addition to a wide range ofadditional features.

DisplaysThe System 9000 is suitable to drivealmost any display, such as complexmimic diagrams, simple LEDs, or backlitlamp displays of a vast range of shapesand sizes. RTK Instruments can offer awhole range of display options for theSystem 9000, which are fully detailed ina separate datasheet.

Total FlexibilityThe modular construction and theadvanced programming facilities meanthat the System 9000 Alarm Annunciatorcan be supplied to match any processalarm application. The 19in racking systemallows almost unlimited system expansion,

and the Setup Card allows configurationdown to each individual alarm way forboth sequence and operation.

High Density PackagingA standard rear mounting 19in 3UEurorack forms the basis of the System9000. Each rack can contain up to 14eight channel active input cards giving atotal of 109 alarm ways and threepushbuttons per rack. Racks can easilybe linked together to produce alarmsystems of almost unlimited size.

First UpIn alarm annunciation applications, it isoften essential to know which alarmoccurred first. For this reason, the System9000 has a flexible high resolution first-upfacility as standard. Four different first-upsequences are provided to match the ISAstandard S18-1 1979 (R 1984). Up to fourseparate first-up groups can be definedwithin the one system; each alarm waycan be configured as being in one ofthese four groups.

Relay OutputsThe standard system has relay outputsfor all the commonly used functions,such as a horn relay, watchdog relayand total group relay (with optionalreflash). If additional relays are required,then the optional Group Relay Cardmay be needed. This card will expandthe relay outputs from the system by anadditional eight.

Each alarm way can also be suppliedwith individual user configurable repeatrelay outputs.

CommunicationsThe communications facility allows theSystem 9000 to act as a dataacquisition system and transmit alarminformation serially to SCADA systems,computers, plcs, DCS systems etc.With the unique ‘multi-redundant’design, all cards can communicatedirectly to the host system so there isno risk of card failure causing thecommunications to halt. This method ofdata transmission will operate over1.2km and uses standard MODBUSprotocol.

Isolated InputsInputs are generally normally open ornormally closed volt-free contacts. Allinputs are opto-isolated as standardand can accept 24VDC signals withoutalterations. There are options for thehigher field contact voltages of 48, 110and 250VDC.

Bulb Fault IndicationIf any alarm way is unable to light itswindow, because either both lamps areopen circuit or missing, or one of thelamps has failed short circuit, then agreen ‘status’ LED on the input cardflashes to indicate this problem. Thelamp test pushbutton can then bepressed to find the faulty window. Noneof the above malfunctions will preventthe alarm annunciator from detectingand sounding alarms.

ServicingAll alarm ways are configured from thekeypad on the Setup Card mounted onthe left hand side of the rack, or onsystems with communications, this canbe downloaded from the SetupSoftware. In the unlikely event of a cardfailure, the cable connections can beunplugged from the card and the carditself unplugged from the rack. Thisallows very fast card replacementwithout the need for any rewiring.

4 Provides independent annunciation of critical plantalarms whilst communicating back to the host DCS,PLC, ESD, SCADA or computer system

4 Fully field programmable, from integral Setup Card oryour configuration software

4 Suitable for systems from a basic eight-wayannunciator to a plant-wide alarm management system

4 Total flexibility in choice of system size, display style,operation and options

4 Field proven technology, with hundreds of thousandsof alarm points already in operation worldwide

4 Options available for multiplexing, sequence of events recording, etc.

Active input card

Setup CardEach system is supplied with a SetupCard. This card is not a master module;it is not required for the system to runcorrectly. The function of the Setup Cardis to allow users to configure the inputcards to their required operation. Onceconfigured, all settings are stored on theEEPROM on the Active Input Cards. TheSetup Card also filters and protects theincoming power supply and providesthe common relay outputs.

Alarm Management Software

With its multi-redundant architectureand communications facility the System9000 is an ideal front-end to a screenbased alarm management system. RTKcan provide alarm managementsoftware and complete systems usingindustrialised computers and screens.These are developed in conjunctionwith the users to provide the clearest

possible means of showing alarms, thepriority of these alarms and exactlywhat to do in each alarm situation.These systems can also provide ameans of logging all alarm and eventhistory for analysis at a later date.

MountingThe standard method of mounting isdirectly onto the backplate of a controlpanel. The rack can easily be suppliedas a normal front mounting 19insubrack suitable for direct mountinginto 19in racking systems.

Power SupplyThe supply voltage range for the system iswide enough for unregulated and batterybacked supplies. The nominal 24VDCsupply can be anywhere within the range19-36VDC without affecting systemperformance. Alternative supply systemssuch as 48VDC can also be provided.

InterfacingThe System 9000 is ideally suited tointerface to other plant equipment. Evenbasic systems come complete withoutput relays to link to externalindicating devices and displays. Therelays can be expanded to covermultiple group relays and individualrepeat relays for all alarm ways.

Using the powerful communicationsfeatures it is possible to interface to

existing PLCs, SCADA systems,Emergency Shutdown Systems andplant-wide distributed control systems.The Annunciator can monitor anddisplay critical alarms and communicatethe results into the normal monitoringsystems, giving another level of safetyand independence from the generalmonitoring or control system.

Pushbutton InputsThe standard requirement for themajority of alarm annunciators is threepushbuttons for Lamp Test, Accept andReset. The System 9000 not only allowsthese standard functions, but can alsoallocate a further five inputs to operateadditional more advanced controlfeatures. If these are not required, theyare simply not used. The additionalfunctions are Silence, System Test,First-up Reset, Sleep and Horn Inhibit.

Features & Benefits

‘Multi-redundant’ design

The System 9000 maintains the unique ‘multi-redundant’

design. Each alarm board contains an ASIC (Application

Specific Integrated Circuit) which is capable of complete

system control – if one board fails, or is removed, then

another ASIC on another board will takeover system control,

avoiding a single source of system failure and vastly

increasing the system MTBF. An in-built watchdog relay will

give an alarm if any Active Input Cards fail or are removed.

‘Multi-redundant’ Communications

This principle is now extended to the communications.

All active alarm boards have full communications facilities

– if a single board fails, an alarm is sounded but normal

communications will continue with all the remaining

boards. Again, this removes the single source of

communication failure and goes far beyond a dual

redundancy system.

‘Multi-redundant’ Power Supply

Each alarm card has its own in-built fully isolated dc/dc

converter, again providing distributed power supplies

across the whole alarm system, so the system does not

rely on a single power supply card.

Line Monitoring

The integrity of the rack itself is without question, but what of

the connections to the outside world?

Alarm contacts: The System 9000 can be supplied complete

with an extensive line monitoring facility. If the connections to

the alarm contact go either short circuit, open circuit or high

resistance then an alarm is sounded to identify the problem.

Lamp Failure: The connection to the lamp display module

can also be fully monitored, so that if any alarm way is

unable to light its lamps the system will also sound an

alarm. Both features can have volt-free relay contact

outputs.

Setup card

RTK Engineering’s Total Security Concept

Displays

To complement the System 9000 Alarm Annunciator, RTK Instruments offers a wide range of displays from simplelamp arrays to full mosaic mimic diagrams. Most of thedisplays are modular in design to enable RTK to match your

exact needs, rather than compromising on the nearestavailable shape and size. The main display types areillustrated and described here; for more detailed information,refer to the separate display datasheet.

P725LOLamp-Only ModulesThis display has been designed tomatch the Series 725 AlarmAnnunciator – it will look identical whenviewed from the front. It is available inexactly the same format as theannunciator with three window sizes,six colours and a choice of lamp or LEDillumination. This display is the bestchoice when LED illumination isrequired, offering the most competitiveultra-bright illumination. It is fitted with a‘Lamp Test’ facility as standard.

DF30 Display Facia

The DF30 display facia provides a flexibledisplay panel for both LED orincandescent lamps. This display facia istotally modular allowing systems ofalmost any shape and size to beconstructed. The basic lamp module is 30x 30mm but these can be configured togive a range of window shapes and sizesby interconnecting multiple windows. Thisdisplay can also have integralpushbuttons, keyswitches and audibledevices. There is no limit to the number orposition of these devices. All connectionsare by rear mounted screw terminals.

Hazardous Area DisplaysWhen supplied through suitablecertified interface devices, the System9000 can be used to drive a displayfacia in the hazardous area. The DF30ISis a backlit display certified as Ex II 1G,EEx ia IIC T4. The display gives a brightLED illuminated backlit display thatmatches the safe area versions.

The L20 Intrinsically Safe Multiplexercan also be used to drive a hazardousarea display using only two cables intothe hazardous area.

IP65 DisplaysWhere protection from the environmentis essential a range of displays sealedto IP65 can be provided. Thesecustom-built units have bright LEDdisplay modules wired to rear mountedterminals. The completed assembly ismounted with a gasket to the paneldoor to maintain the sealing.

Mimic DisplaysMosaic tiled mimic systems can bedriven by the System 9000 to provide aflexible and informative overview display.The standard mosaic mimic uses a 24 or25mm tile mounted on a strongaluminium honeycomb grid. Tiles are themoulded type for process mimics oralternatively screen-printed or engravedto form the required display drawing. Awide range of suitable lamps, switches,pushbuttons and displays can also beintegrated into the finished mimic. Onsmaller projects and simpler displayrequirements a hard wearing, singlepiece mimic can also be provided.

Alarm Management SoftwareWith its multi-redundant architectureand communications facility the System9000 is an ideal front-end to a screenbased Alarm Management System.These can be set up in thousands ofdifferent ways to suit each individualalarm handling situation. Differentdisplay screens have already beendeveloped and these building blockswould be used to provide a customsolution for each client. These systemscould also incorporate touch screendisplays, dual redundant servers and arange of industrial computers.

Advanced Features

Most of the features listed here aresupplied as standard as part of thenormal software; the system is simplyconfigured exactly as required for eachapplication. Further options exist fromRTK to provide complete systems,undertake programming andcommissioning, and provide alternativemounting arrangements. Pleaseconsult the Sales Office for furtherinformation on any of these options.

TimersDelay timers can be incorporated intothe System 9000 on both the inputs andthe outputs. This facility can avoid thepossibility of nuisance alarms by settingan input time delay, so that the alarmcontact must be in alarm for a certaintime before triggering the input circuitry.

Repeat RelaysEach alarm way can have an individualrepeat relay output in addition to anygroup relays configured. The relays can beset up as energised or de-energised onalarm and N/O or N/C contact. The relayfunctions are also user configurable tofollow the alarm logic or follow the input.

Group Relay CardAn additional card is available for thosesystems requiring more than thestandard 3 relay outputs. The card has 7additional group relays and an further 3horn relays, all of which are fully

configurable. Any alarm way in a systemcan be configured into any of the 8possible groups or 4 possible audiblegroups. Three of these group relays canalternatively be configured to giveoutputs for ‘line fault’, ‘communicationsfault’ and ‘bulb failure’.

Output Relay ReflashEach of the group relays can have thereflash facility enabled. This is where thegroup relay will change state for approx0.5s when another alarm in that groupoccurs. This allows a control roomannunciator or monitoring system toindicate each occurence of a new alarm.

Alarm Indication via PLCsThe cost of digital output cards for PLCsto drive conventional backlit displays canbe avoided by simply communicating allthe alarm information serially to a System9000 annunciator. The Annunciator willthen convert the serial information anddrive the lampbox display.

Multiple Input ReflashIt is often necessary to connect morethan one alarm contact to a singlealarm display window. This can beconfigured from the Setup Card so thatup to 24 alarm contacts can all link to asingle alarm window. After an alarm hasoccurred and been accepted thenanother alarm occurring in the samegroup will cause the display window toflash again (reflash) to indicate theoccurrence of a new alarm.

DiscrepancyRather than simply monitoring the stateof a single alarm contact, it is possibleto configure the Annunciator to monitortwo or more contacts to ensure theycorrespond. If the two contacts go outof sync, a fault has occurred and thealarm will sound.

Boolean LogicIn a similar way to the discrepancycontrol, multiple inputs can be linkedtogether by standard OR and ANDfunctions. For example, the system canbe programmed so that an alarm willonly occur if four particular inputs are allon at the same time.

Sleep ModeUseful in unmanned/not normallymanned situations. Any single input canbe configured as a “sleep” input. Whenthis input is switched on the drive

outputs to the lamps and audibles aredisabled. The annunciator will workexactly the same in all other respects;all alarms are monitored as standardand all repeat relays andcommunications function as normal. Assoon as the system is switched out ofthe ‘sleep’ mode, the display facias willdisplay all alarm information, completewith all first-up details.

MultiplexerTo cut down on the costs of installingvast numbers of cables across largesites, the System 9000 can be used asan economical multiplexer system,where all the alarm contacts aregathered by a single System 9000TXModule and transmitted serially on 4wires up to 1.2 km away to the receivingmodule, the System 9000RX Module.The alarms can then be displayed on adisplay facia or via VDU screens.

Complete SystemsRTK can provide the System 9000mounted in a wall mounted or floorstanding cabinet and provide all thenecessary wiring to the displays, PSUsand terminals ready for final installationon site. These panels are quotedagainst each specific customerrequirement; please contact the SalesOffice for further details.

Card Types

Active Input Card (P925A)Connects to the alarm and pushbuttoninputs and drives the lamp facia display.

Setup Card (P925S)Allows configuration of Active Input Cards,filters the incoming supply voltage andprovides 3 relay outputs.

Relay Card (P925R)This card is connected directly to the ActiveInput Card and gives an individual repeatrelay per alarm input.

Group Relay Card (P925G)Has 8 relays fitted, 7 additional group relaysand 3 additional horn relays.

Interface Card (P925X)Provides a link to the systemscommunications facilities via RS485.

Power Input Card (P925P)Used on extension racks in place of thesetup card. This simply filters the incomingpower and provides a connection to the rearbackplane.

Interconnect Card (P925I)Use on larger systems to buffer the signalsbetween racks and link the common lines.Supplied with an interconnect cable.

The Best of Both WorldsIdeally, critical plant alarms shouldbe hard wired to a dedicated alarmsystem like the System 9000 anddata passed onto the DCS as asecondary function. This offers thebest of both worlds in that theSystem 9000, which has beenspecially developed to offer highspeed event capture and True FirstOut Discrimination, also providesthe clearest possible indication ofcritical plant conditions. TheSystem 9000 provides anindependent, highly reliable,modular alarm system employingmultiple redundant design features.It should be used to complementcentralised DCS platforms thathave been primarily developed forcontrol and monitoring.

Each alarm channel can be configured tosuit the operating sequence required aslisted in the ISA publication Annunciator

Sequences and Specifications S18.1 1979(R1985). Systems can be configured withdifferent features on different alarm ways

and there is no need to switch the poweroff. The diagram below shows the mostcommonly used sequences.

Sequence tables

PROCESS

SEQUENCE

VISUAL

AUDIBLE

NormalNormalOffSilent

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalAlarmFlashingAudible

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalAcknowledgedOnSilent

MANUAL RESET Sequence Code M

resetwhile

normal

acknowledge

toabnormal

PROCESS

SEQUENCE

VISUAL

AUDIBLE

NormalNormalOffSilent

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalAlarmFlashingAudible

PROCESS

SEQUENCE

VISUAL

AUDIBLE

AbnormalAcknowledgedOnSilent

AUTOMATIC RESET Sequence Code A

returnto

normal

acknowledge while normal

acknowledgewhile

abnormal

toabnormal

PROCESS

SEQUENCE

VISUAL

AUDIBLE

NormalNormalOffSilent

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalSubsequent AlarmFast FlashingAudible

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalFirst AcknowledgedFlashingSilent

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalFirst AlarmIntermittent FlashingAudible

PROCESS

SEQUENCE

VISUAL

AUDIBLE

AbnormalSubsequent Acknowledged

OnSilent

AUTOMATIC RESET FIRST OUT Sequence F3AWITH FIRST OUT FLASHINGAND RESET PUSHBUTTON

first outreset while

normalreturn

to normal

first out resetwhile abnormal

acknowledgewhile normal

subsequentto abnormal

first out

reset

acknowledgewhile

abnormal

first toabnormal

acknowledge

PROCESS

SEQUENCE

VISUAL

AUDIBLE

NormalNormalOffSilent

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalSubsequent AlarmOnAudible

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalFirst SilencedFlashingSilent

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalFirst AlarmFlashingAudible

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalAcknowledgedOnSilent

MANUAL RESET FIRST OUT Sequence F2M-1WITH NO SUBSEQUENT ALARMFLASHING AND SILENCE PUSHBUTTON

resetwhile

normal

mute andacknowledge

acknowledge(first out reset)

subsequentto abnormal

acknowledge(first out reset)

first toabnormal

mute

PROCESS

SEQUENCE

VISUAL

AUDIBLE

NormalNormalOffSilent

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalAlarmFlashingAudible

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalAcknowledgedOnSilent

NO LOCK IN

returnto

normal

return tonormal

acknowledge

toabnormal

PROCESS

SEQUENCE

VISUAL

AUDIBLE

NormalNormalOffSilent

PROCESS

SEQUENCE

VISUAL

AUDIBLE

Abnormal or NormalFirst AlarmFlashingAudible

PROCESS

SEQUENCE

VISUAL

AUDIBLE

AbnormalAcknowledgedOnSilent

AUTOMATIC RESET FIRST OUT Sequence F1AWITH NO SUBSEQUENT ALARM STATE

return tonormal

acknowledge while normal(first out reset)

subsequentto abnormal

acknowledgewhile abnormal(first out reset)

first toabnormal

PROCESS

SEQUENCE

VISUAL

ALARM AUDIBLE

RINGBACK AUDIBLE

NormalNormalOffSilentSilent

PROCESS

SEQUENCE

VISUAL

ALARM AUDIBLE

RINGBACK AUDIBLE

NormalRingbackSlow FlashingSilentAudible

PROCESS

SEQUENCE

VISUAL

ALARM AUDIBLE

RINGBACK AUDIBLE

Abnormal or NormalAlarmFast FlashingAudibleSilent

PROCESS

SEQUENCE

VISUAL

ALARM AUDIBLE

RINGBACK AUDIBLE

AbnormalAcknowledgedOffSilentSilent

RINGBACK Sequence Code R

reset

return tonormal

return toabnormal

acknowledge while normal

toabnormal

acknowledgewhileabnormal

Installation and Mechanical Details

Local Annunciation

System 9000Alarm inputs (up to 109/rack)and control inputs (T, A, R)

Alarm ManagementSoftware

DCS/ESD

System 9000RXSystem 9000TXAlarm inputs (up to 109/rack)and control inputs (T, A, R) up to 1.2km

PLC

Printer

PLC

Standard system with Communications

Multiplexed system

132.557

482.6 (19in)

465

19010

132.557

269

253

19010

Fourteen module, full 19in rack

Five module, half 19in rack

The System 9000 is based on thestandard eurorack, manufacturedto IEC 297-3 (DIN 1494 Pt.5). Thestandard subrack size is 3U and84E wide (19in). This module will fitthe Setup Card and up to 14 ActiveInput Cards. For smaller systems, ahalf rack version is available, this is42E wide (101⁄2in) and will fit theSetup Card and up to 5 ActiveInput Cards. The units can besupplied as rear mounting for directfixing to backplanes or frontmounting for use in 19in racks.Larger systems can be supplied byinterconnecting multiple racks. Allsignals are fully buffered using theInterconnect Card, so no signaldeterioration will occur even onextremely large systems.

RTK Instruments Limited St James Business Park,Knaresborough, North Yorkshire,England. HG5 8PJ

Telephone: +44 (0)1423 580500Facsimile: +44 (0)1423 580501Web: www.rtkinstruments.comEmail: enquiry@rtkinstruments.comFM14290

ISO9001:2000

5YEAR

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Technical Specification

Inputs

Alarm ContactsAll inputs are opto-isolated (isolationvoltage 500VDC). By using differentwiring configurations, the same systemcan be used for both:

4 Volt-free contacts which can havethe operating mode configuredusing the Setup Card, to operate toalarm for contact open or to alarmfor contact closed.

4 Voltage input from 19VDC minimumto 36VDC maximum with a common0V for the 24VDC system and 38 to58VDC for the 48VDC system.110V field contact voltage option

Alarm Contact and Cable ResistanceN/C contact – series resistance ofcontact cables 20kΩ maximum.

N/O contact – parallel resistance ofcontact cables 200kΩ minimum.

Field Contact Voltage and CurrentThe voltage for volt-free alarm contactsis fed from the unit at 24VDC atapproximately 2mA.

To maintain complete isolation it ispossible to use a separate PSU to feedall the alarm contacts.

Input Transient Filter (24V input)Signals narrower than approx 40ms at30V will not trigger the annunciator.

Tolerable transient at higher voltages:100V for 2ms200V for 1ms1kV for 200µs

First-up DiscriminationTypical 10ms

Control InputsAny input can be configured to one ofthe following control inputs:4 Lamp test 4 Mute4 Acknowledge 4 First-up reset4 Reset 4 Sleep4 System test 4 Horn Inhibit

Outputs

Lamp DriveEach output can drive up to 160mA at24VDC, making it suitable for multi bulbdisplays or multiple repeat displays.

Standard RelaysStandard relays fitted on the SetupCard: Horn, Group and Watchdog.

Contact rating 3A at 24VDC resistive or2A at 240VAC resistive. Selection ofN/O or N/C contact by jumper link.

Repeat and Group RelaysGroup relay card and individual repeatrelays for each alarm way. Contact rating3A at 24VDC resistive or 2A at 240VACresistive. Relay ouputs may be normallyenergised or normally de-energised andcontacts can be N/O or N/C.

CommunicationsAlarm data can be transmitted using theserial communications port to otherSystem 9000 units, DCS systems, PLCsor computers.

Transmission – RS485C. Full duplex,1 start bit, 7 data bits, 1 parity, 1 stop bit.

Baud Rate – up to 9600

Protocol – ASCII MODBUS and RTU

General

Supply Voltage24VDC nominal (19–36VDC) Standard

48VDC nominal ( 38–58VDC)

A range of power supplies is availableto convert from other ac or dc voltages.

Supply current (mA) 24V 48VQuiescent: Setup Card 120 60Quiescent: Active Input Card 40 30Relay current/per relay 22 10Add the current for the lamp drive tothe totals of the above cards

EMC ComplianceImmunity to EN61000-6-2:2001Emissions to EN61000-6-4:2001

LVD ComplianceThe unit is designed and manufactured tosafety specification BS EN61010-1:1993

EnvironmentOperating temperature –20°C to +60°CStorage temperature –20°C to +80°CHumidity 0–95% RH, non-condensingProtection IP41

Mechanical Details

19in RackStandard 3U by 19in Eurorack toIEC 297-3 (DIN 1494 Pt.5) for up to 109alarm inputs and 3 control inputs.

Standard 3U by 101⁄2in Eurorack toIEC 297-3 (DIN 1494 Pt.5) for up to 37alarm inputs and 3 control inputs.

Larger systems can be provided usingmultiple racks and interconnect cable.

MountingEither rear mounting direct to backplateor front mounting in a standard 19inracking system.

AssemblyAll cards plug in to a standard pre-tested motherboard using DIN41612connectors. This allows simple systemexpansion of system size at a later date.

ConnectionsTwo part rising clamp terminals,maximum cable size 2.5mm2. Sidemounted and front mounted screwterminals are available.

Due to our policy of continuous product development, we reserve the right to amend specifications without notice.

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