Instrukcja obsługi Vemer SRG.4

Vemer detektor gazu SRG.4

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Strona 1/2
ON
SRG.4
1 2 3 4
TEST
RESET
Mod. SRG.4
V3IS00460–010
86.7
159.5
50.5
12.0
58.0
86.7
50.5 50.5
C1 S1 A1 C2 S2 A2 C3 S3 A3 C4 S4 A4
1 2 3 4
SENSORS
+ –
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20
8A / 250V 8A / 250V
1
2
V
a
c
/
d
c
Description
 
g 
h
j 
User manual
SRG.4 - CONTROL UNIT FOR GAS DETECTOR
Read all the instructions carefully
 TheSRG.44isacontrolunitforthecreationofgasdetectionsystemsinareas
suchasboilerrooms,workshops,warehouses,laboratories,etc.Itisdesignedto
workwithprobessuchasCOSensor,CH4SensorandLPGSensor.Itoffersthe
possibilitytocontrolasolenoidvalveoranauxiliarydevice(siren,flasher,etc.)
usinganalarmrelaycontainedinside.ThealarmorfailureisdisplayedbyLED.
SAFETY WARNINGS
To ensure correct installation, you must comply with the following
indications:
1) The device must be installed by a competent person
2) The device must be installed in a panel where, after installation, the terminals
can no longer be accessed
3) In the electrical system up the line from the energy meter there must be a
device to protect against overloads
4) Connect the instrument following the diagrams shown in this sheet and in the
product marking
5) Before accessing the terminals, make sure the leads to connect to the
instrument are not electrically live
6) Do not power and connect the instrument if any part of it is damaged or
missing.
Codice Model Description
VE203600 SRG.4 Gasdetectorwith4connectingsensor
VE205100 CH4 SENSOR Methanedetectionsensor
VE206900 LPG SENSOR LPG sensor
VE207700 CO SENSOR Carbonmonoxidesensor
TECHNICAL CHARACTERISTICS
Control unit SRG.4
• Powersupply:
 −Voltage:12Vac/dc±10%
 −Powerconsumptionwith1probe:~160mA
 −Powerconsumptionwith4probes:~280mA
 −Connection:terminalsof2.5mm
2
 −Protection:fuse1A5x20mm
• Inputs:
 −4inputsforCH4Sensor(methane),LPGSensor(LPG),COSensor(CO).
 −Connectionofprobes:terminalsof2.5mm
2 per probe
 −Max.connectionlength:50mforeachprobe
 −Cross-sectionoftheleads:1.5mm2
• Output:
 −Alarm:relaywithexchangecontact8A/250VAC
 −Failure:relaywithexchangecontact8A/250VAC
 −Connection:terminalsof2.5mm
2forrelayC-NC-NO
• Luminoussignals: 1greenLED:powersupplied
 1yellowLED:generalfailure
  4yellowLED’s:failureforeachprobeline
  4redLED’s:gasalarmforeachprobeline
• Reset/testbuttonforalarmresetandprobetestfunctions
• Degreeofprotection:IP20;IP40whencorrectlyinstalledinanelectricalpanel
• Ambienttemperature:0÷+50°C
• Humidity: 90%R.H.withoutcondensation≤
• Productforassemblyon9-moduleDINrails
Sensors for SRG.4 control units
• Powersupply:fromthecontrolunitSRG.4
 −Currentinput(at6.5V):40mA
 −Connections:terminalsof2.5mm
2forprobeC(common),S(signal),A(power6.5Vdc)
• Modelsandcalibration:
 −Methanegas:CH4Sensor,(default)10%LIEofmethane
 −LPG:LPGSensor,(default)12%LIEofisobutene
 −Carbonmonoxide:COSensor,(default)200ppmofCO
• Container:inself-extinguishingplasticmaterial
• Fastenedtowallusingscrewsandplasticplugs
• Protection:IP30
• Ambienttemperature:0÷+50°C
• Humidity: 90%R.H.withoutcondensation≤
INSTRUMENT DESCRIPTION
 Ledpowersupply
Led signaling general failure
 Reset/Testbutton
Led signaling failure probes
Led signaling gas alarm
 Powersupplyterminals
g
Connection probes terminals
h
 Protectionfuse1A
 Set-upjumper
j
 Terminalsforalarmoutputrelay
 Terminalsforfailureoutputrelay
INSTALLATION
Do not use the device in excess of the limits set forth in the technical data. The installer is
responsible for correct, safe installation of the product. Use care during shipping, storage
and handling.
1) Protectionofthedevice.
 Toensuretheproperdegreeofprotectionoftheunit,itisnecessarytoinstallthecontrol
unitinanelectricalpanelconstructedinaccordancewithcurrentstandardsforthe
workplace,andinsideofwhichthepowersupplysystemcanalsobehoused.Thecontrol
unitcanbeinstalledatthebottomofthepanelorinDINmodularpanels.
 TheLPG,COandCH4Sensorsaredesignedtobewall-mounted(vertically),usingscrews
andplasticplugs.Toproceedwithinstallation,openthecontainerbyunscrewingthe
screwlocatedontheside.Makesurenottodamagethesensorandnottotouchthe
calibration devices.
2) Installationoftheproduct.
 Thecorrectinstallationoftheprobeisessentialtoproperoperationofthesystem.
Therefore,itmustbeinstalled:
 –Inareaswithcirculationofnaturalair;
 –Inareasthatarenotsubjecttodustordirtthatmayrenderthesensorinoperative;
 –Nearjetsofwater,intakegrilles,openings,etc.
 –Atanadequatedistancefromusersofgassoastopreventthesystemfromintervening
improperlyduetofunctionalleakage.
 Also,positioningdependsonthetypeofgastobedetected,specifically:
 –CH4:Methanegas-attop,about20-30cmfromtheceiling
 –LPG:LPG-atbottom,about20-30cmfromthefloor
 –CO:carbonmonoxide–about1.5mfromthefloor
 Fornewsystems,theprobemustbeinstalledaslateaspossible,sothattypical
constructionsiteactivitiesdonotdamagethedetector.
Attention: make sure you check operation at least once a year, and in any case
whenever there is an extended period of disuse or in the event of replacement.
Any tampering may compromise correct operation of the system.
3) Connectionsanduseoftheproduct.
 Normalelectricalcablescanbeusedforconnections.Inanycase,wheninstallationis
inplacesthatarestronglyexposedtoelectromagneticdisturbances,itisadvisableto
useshieldedcables.Thedetectionsystemmustalwaysbeinoperation.Therefore,the
electricalpowersupplyofthedetectormustnotincludeswitchesorotherdevicesthat
mayaccidentallyshutitoff.Thepowersupplyofthecontrolunitmustcomplywiththe
requiredvaluesandthecurrentinputofanydeviceconnecttotheterminalsoftherelay
mustbelessthanorequaltothemaximumcapacityofthecontacts.Theaveragelifespan
oftheprobesis5yearsfromthedateofinstallation.Therefore,attheendofthattime
theywillneedtobereplaced.
Attention: in the case in which in every single terminal block of the control
unit missed the probes, there must be a resistence of 18KOhm 1/4 W 5%
between C ans S furnisced in the box.
OPERATION
 Oncethedevicehasbeeninstalled,youwillneedtoselecttheoperatinglogicusing
jumperE1.Itcanbeeitherpositiveornegative.Thecontrolunitsignalsitsoperating
statusbymeansofLED’s.
A
Position A
Positive logic
Position B
Negative logic
B
A
B
E1
E1
E1
A
B
 DependingonthelogicselectedusingjumperE1,inanormalsituation(noalarms),the
LED’sandtherelaywillbe:
 –positivelogic:LEDon,relayenergized
 –negativelogic:LEDoff,relayde-energized
 Ifnegativeoperatinglogicisselected,thealarmrelaymaybecontrolledinpermanentor
impulsivemode,dependingonthepositionofjumperE2:
A
Position A
Alarm relay
Permanent control
Position B
Alarm relay
Impulsive control
B
A
B
E2
E2
E2
A
B
Dimensions
Connection diagram
 Oncepoweredon,thecontrolunitperformsthefollowingphasesinsequence:
• Buzzertest(durationabout5seconds)whichcausessequentiallightingoftheLED’sand
abriefringingofthebuzzer.
• Pre-heatingoftheprobe(whichlastsabout1minute),duringwhichthedetection
systemisnotoperationalbecausethisallowstheprobestoreachthecorrectoperating
temperature.
• Operationaltest(whichlastsabout3minutes)duringwhichthepowersupplyLED
flasheswithafrequencyof2Hzandalltimesettingsareresettozerotomakeiteasierto
checktheprobes.PresstheReset/Testforaboutonesecondtointerrupttheoperational
testphaseandchecktheprobes.
• Gasalarmtest,whichoccursbyplacingthetestspraycanneartheprobeandreleasing
asmallamountofgas.Donotdirectthespraydirectlyontothesensoroftheprobe,
asitmaydamageitirreparably.Thecontrolunitwillsignalthealarminthefollowing
manner:
Interface Positive logic Negative logic
Led for alarm (red)
of concerned probe
Off On
Alarmbuzzer Continuous sound Continuous sound
Alarmrelay De-energized Energized(permanentlyor
in impulsive mode)
 PresstheReset/Testkeyforonesecondtosilencethealarm(ifthegasisnolonger
present)andendthetestphase.Torestartthetestphase,pressthecorrespondingbutton
for about 6 seconds.
• Probeanomalytest,whichistobesimulatedsimplybydisconnectingtheconcerned
probecableandcheckingthefollowingsignals:
Interface Positive logic Negative logic
Led for failure (yellow)
of concerned probe
Off On
Alarmbuzzer Intermittent sound Intermittent sound
Failurerelay De-energized Energized
 Oncethetesthasbeenmade,re-connecttheprobeandpresstheReset/Testbuttonto
restorethecontrolunittonormaloperation.
Normal operation
 Duringnormaloperationofthecontrolunit,boththemonitoringforgasalarmand
theself-diagnosisforplantanomalies(probes)andsystemsanomalies(controlunit)are
active.Inthisphaseandwithnoalarmsorfailures,thecontrolunitstatusisasfollows:
Interface Positive logic Negative logic
Led (green)forpowersupply On On
Led for general failure(yellow) On Off
Led for probe failure (4)(yellow) On Off
Led for general alarm and (red)
line failure (4)
On Off
Alarmbuzzer No sound No sound
Alarmrelay De-energizedEnergized
Failurerelay De-energizedEnergized
 Inpresenceofgasalarmorprobefailure,thecentralunitgoesintothesameconditions
describedintherelativestestphase.
REFERENCE STANDARDS
ConformitytotheEUdirectives
2006/95/EC(LowVoltage)
89/336/ECmodifiedby92/31/ECCand93/68/EEC(E.M.C.)
isdeclaredwithreferencetothefollowingharmonisedstandard:
EN 61779-1, EN 50270

Specyfikacje produktu

Marka: Vemer
Kategoria: detektor gazu
Model: SRG.4

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