Siemens RAJA+ Guide

RAJA+Fully Automatic
Star Delta Controller
3TE7431
For dependable service, it is of utmost
importance that instructions given below are
followed for selection, inspection, installation,
commissioning, operation and maintenance.
Installation, Operation & Maintenance
Instructions
s
RAJA+Fully Automatic Star Delta Controller
3TE7431
Selection of Controller
• ReferTable1forrecommendedselectionof3TE7FASD
Controllers.
• 3TE7431Controllersareavailablefrom15HP/11kWto30HP/
22kWsuitableforSubmersiblepumpapplicationmotors.
12
13
4
14
11
7
3
1
5
2
6
8
9
10
1. ‘ON’pushbutton(green)
2. ‘OFF/RESET’pushbutton(red)
3. Doorknob
4. MetalEnclosure
5. Door
6. MechanicalLatch(OFFpushbutton)tobeusedfor
preventingundesiredONoperationofController
7. Nameplate
8. LED(amber)toindicatehealthinessofincomingpower
supply
9. GreenLEDtoindicateMotorONstatus
10. Rockerswitch(ControlON/OFF)
11. DualVAmeter(Forindication)
12. PhaseSelectorswitch
13. Earthingscrew
14.ControllerMountingbracket
Fig. 1: FASD Controller
Fig. 2: FASD Controller inside view
Pleasereadandunderstandtheseinstructionsbefore
installing,operatingormaintainingtheequipment.Keepfor
futurereference.
Danger
Hazardousvoltagecancausedeathorseriousinjury.Disconnect
powerbeforeworkingonequipment.
Warning
Automatic Motor Restart
LMRAhas“Auto”modeselection.Usethisfunctionwith
caution,Motorwillrestartautomaticallywhenhealthy
powerisrestoredback.
Reliablefunctioningoftheequipmentisonlyensuredwith
certiedcomponents.Commissioningandmaintenanceby
qualiedpersonnelonly.
NOTICE
ThisproducthasbeendesignedforenvironmentA.Useofthisproduct
inenvironmentBmaycauseunwantedelectromagneticdisturbancesin
whichcasetheusermayrequiretotakeadequatemitigationmeasures.
Complies to standard : IS/IEC 60947-4-1

Installation:
• Openthedoorbyrotatingthedoorlocksanticlockwise.
• Mountthecontrolleronaverticalwall/platefreefrom
vibrationswithpropernutsandbolts.ReferFig.6for
mountingdimensions.
• Removetherubbergrommetsfortheincomingand
outgoingcableconnections.(ReferFig.2)
• Connectincomingandoutgoingcablesasfollows(Refer
Fig.2):
 – Usepropercableglandstoensuredustproong.For
conduitentryusepackedwashers.
 – SelectcorrectsizeofcablesfromTable1.
 – Connectlineandmotorcablesexactlyasperwiring
diagrampastedinsidethecoverofthecontroller.
 – Terminatetheincomingsupplycablesonterminal
blockTB1&outgoingcablestomotoronterminal
blockTB2,TB3(Tighteningtorque-Refertable2).
NOTE:LMRAissetinManualmode(Factorysetting)
   WLCissetinDeliverymode(Factorysetting)
 – Connecttheearthingconductortoterminalsmarked
(earth)onthecontrollerbodywithtorque1.2to
1.6Nm.
 TheControllerisnowreadyforcommissioning.
• Initiallysettheoverloadrelayto0.58timestherated
motorcurrent.
• Setthetimerdialtothenearestvalueofstartingtime
availableonmotornameplate.
 Ifitisnotavailable,thensetthedialtoapproximately
6-8secs.
• Closethedoorbyrotatingthedoorlocksclockwise.
Commissioning:
Forexactsettingoftimerandoverloadrelay,followthe
instructiongivenbelow:
Before switching ON recheck all external connections.
• Star-DeltaTimersettingforFASDController:
 – FirstSwitchONtheRockerswitch(ControlOn/Off).
 – Startthemotorbypressingthe‘ON’buttonshownin
Fig.1.
 – Measurethetimetakenbythemotortonearly
reachratedspeedorsteadystatecurrentcondition
(indicatedwhenthemotorreachesasteadyhum).
 – StopthemotorbyOFFbuttonshowning.1.
 – Openthedoor&Setthetimertothismeasuredvalue
byrotatingthedialshowninFig.3.
• Overloadrelaysetting:
 – Forcloserprotectionsettheoverloadrelaytoactual
phasecurrentasmeasuredbyanammeter.Inthe
absenceofanammeter,usetheproceduregiven
below:
 – Startthemotorandletitrunfor30mins.Then
graduallyreducetherelaysettingstillittrips.Setthe
relayataslightlyhighervaluethanthissetting.
  Overloadrelaycharacteristics(Referservicemanual
A5E50797230A)canbeusedtoestimatetheaverage
trippingtimeatdifferentmultiplesofsetcurrent.
 – Allowaresettimeofapprox.4min.beforepressing
theblueknobontherelaytoresetit.
 – Restartthemotoraftersometime.Iftherelaydoes
nottripthenconsiderittobeproperlyset.Ifthe
relaytrips,setatalittlehighervaluethanbeforeand
recheck.
• Closethefrontdoor.
Caution:
• During commissioning or maintenance always ensure
that the main supply is disconnected by switching off
the main switch & Rocker switch.
• InthecaseofFASDcontrollersunderno
circumstances should the relay be set higher than the
phase current i.e. 0.58 times the rated current on the
motor name plate.
• Iftherelaytripsevenwhensetatratedmotorcurrent
thesuitabilityofthecontroller/relayfortheparticular
applicationshouldbecheckedwiththenearestSiemens
office.
Procedure for connecting WLC sensors & terminations:
• ThesesensorsneedtoberoutedfromleftsideofBaseplatethroughcablegland(Pleaseensureduecaretoavoid
damagetothesensors.)
Mode For Single Tank application
(Delivery or Suction mode)
For Dual Tank application
(Dual tank mode) For by passing WLC
ConnectionProcedure ConnectsensorsP1,P2&P3
toTerminalX1,X2,X3of
TerminalblockTB5
ConnectsensorsP1,P2&
P3toTerminalX1,X2,X3of
TerminalblockTB5&sensors
P4,P5&P6toTerminalX4,
X5,X6ofTerminalblockTB5
Removeconnectionbetween
X7-X8ofTerminalblockTB5.
RemoveconnectionfromX11
ofTB5&ConnectittoX12of
TB5.
2
Fig. 3 Timer Adjustment
Dial

3
Replacement of coilFig.4:Representativeg.forContactor-RelayConnection
Hookonrelayfor
engagement
Contactor
outgoingterminals
Operation:
• Ensurethedoorislocked.
• RotatetheMechanicalLatchawayfromOFFpushbutton.
• SwitchOntherockerswitch.
• CheckthestatusofamberLED.WaittillamberLEDis
continuouslyONthenonlyproceed.
• DependinguponSelectorswitchknobpositionforphase
selection,Indicationofincomingpowersupplyvoltage
canbeseenonDualVAmeter.
• Forstartingthemotor,pressGreenpushbuttonmarked
‘I’(Fig.1).
• LinecurrentofRphaseisindicatedbyDualVAmeter.
• MotorisONwhengreenLEDisON.
• ForstoppingthemotorpressRedpushbuttonmarked‘O’
(Fig.1).
• ForLMRAAuto/Bypassmodesrefertroubleshooting
guideA5E50797230A.
• ForWLCDelivery/Suction/Dualtankmodes,refer
troubleshootingguideA5E50797230A.
• ResetOperation
 – Iftheoverloadrelaytrips,Resetmanually.(Allowa
resettimeofapprox.4min.)
Maintenance:
• SwitchoffthecontrollerandPutLatchontheOFFpush
button,(marked‘O’).Disconnect the main supply by
switching the main switch & Rocker Switch Off before
doing any maintenance.
• Keeptheinteriordustfree.
• Re-tightentheterminalscrewsfromtimetotimeasper
speciedtorqueintable2.
• Nomaintenanceisneededforoverloadrelay.Pleasedo
notopentherelay.
• Replacecontactsofthecontactoriftheywereseverely
pittedorwhenonly40%oftheoriginalcontacttips
remains.
• ReplacementofOverloadRelay(ReferFig.4):
 1. Selectaproperrelayexactlyaspertheoriginal.
 2. Slightlyloosentheoutgoingterminalscrewsofthe
relay.
 3. Disconnectthewiresconnectedtotherelayterminals.
 4. Slightlyloosentheoutgoingterminalscrewsofthe
linecontactor
 5. FollowinstructionsgiveninFig.4forremovalof
relay.
 6. Ensurethatnewrelayhookisengagedinthesloton
contactor.
 7. Connecttherelayterminals(L1,L2,L3)to(T1,T2,T3)
ofQ1linecontactor
 Careshouldbetakentoxtherelayterminals&
relay to contactor in the exact position shown in
Fig. 2.
 8. Tightenthecontactorterminal(T1,T2,T3)screws.
 9. ConnecttherelayterminalstoTerminalblockTB2.
 10.Re-connectallthedisconnectedwiresandcheck
connectionsbyreferringtothewiringdiagram.
(Fig.5)
FormoreTechnicaldetailslikeLMR-A,WLCwiring,operating
sequence,mountingdetailsetc.,referInstallation&
Troubleshootingguideno.A5E50797230A.

Table 1:
Motor /
Submersible
Pump Rating
At 415V
3ph 50Hz
HP/ kW
Starter MLFB
Line/Delta
Contactor
MLFB
Star Contactor
MLFB
Thermal
Overload
Relay
MLFB
Relay
range
(A)
Max. Full
Load Current
(Amp) for
Motor /
Submersible
Pump
Recommended
Max.
Back-up
HRC Fuse
rating Siemens
Make type
3NA7 – 500V
Recommended
Cu Cable with lugs
(mm2)
Incoming
From
Supply
Outgoing
To Motor
15/11 3TE7431-2BC24-1A** 3TS3300-0A**-08K 3TS3110-0A**-08K 3UW5202-2B 12.5-20 29/16.7 32 62.5
17.5/13 3TE7431-2CC25-1AZ8 3TS3500-0AZ8-08K 3TS3300-0AZ8-08K 3US5600-2C8K 16-25 34/19.6 50 10 2.5
20/15 3TE7431-2DC26-1AZ8 3TS3500-0AZ8-08K 3TS3300-0AZ8-08K 3US5600-2D8K 20-32 39/22.5 63 10 4
25/18.5 3TE7431-2DC27-1AZ8 3TS3500-0AZ8-08K 3TS3400-0AZ8-08K 3US5600-2D8K 20-32 48/27.7 63 10 6
30/22 3TE7431-2RC28-1AZ8 3TS3500-0AZ8-08K 3TS3400-0AZ8-08K 3US5600-2Q8K 25-36 57/32.9 80 16 10
Fig. 5: Wiring Diagram
L1, L2, L3: 3φsupply
Q1: Line Contactor
Q2: Star Contactor
Q3: Delta Contactor
K1: Bimetal relay
K2: Star Delta Timer
K3: Line Monitoring relay
K4: Water level controller relay
VSS: Voltmeter selector switch
RS: Rocker switch
AV: Ammeter Voltmeter
AM: Amber LED
GN: Green LED
S1: ON push button
S0: OFF/Reset push button
TB1: Incoming terminal block
TB2/TB3: outgoing terminal block
TB4: LMR terminal connector
TB5: WLCA terminal connector
Selection of contactor coil and LMRA
Contactor coil
voltage code
**
Coil voltage
(VAC)
Line Monitoring
Relay Timer
Z6 200–400 7UG0613-0FE20 3RP1576-1NP208K
Z8 260–460 7UG0613-0FF20 3RP1576-1NM208K

Table 2: Terminal torque values
Sr.
No. Type Size Torque (Nm)
1 Terminalblock30A M4 0.8–1.4
2Terminalblock60A M5 1.5–2.1
3 DualVAMeter30A–Current
terminals
M4 1.2
4 DualVAMeter–Voltage
terminals
M4 1.2
5 SelectorSwitch3LD4 M3 0.5
6Multiwaystrips M3 0.4to0.6
7 DualVAMeter60A–Current
terminals
M6 2.5
8Indicatinglight–Amber/Green M3 0.8–0.9
Table 3 : Spares list
Sr.
No. Description Order No.
1 Contactor 3TS3300-0AZ6-08K
2Contactor 3TS3110-0AZ6-08K
3 Contactor 3TS3300-0AZ8-08K
4 Contactor 3TS3110-0AZ8-08K
5 Contactor 3TS3500-0AZ8-08K
6Contactor 3TS3400-0AZ8-08K
7 ThermalOverloadRelay 3UW5202-2B
Sr.
No. Description Order No.
8ThermalOverloadRelay 3US5600-2C8K
9ThermalOverloadRelay 3US5600-2D8K
10 ThermalOverloadRelay 3US5600-2Q8K
11 Coilfor200-400V 3TY7403-0AZ6
12 Coilfor260-460V(Z8) 3TY7403-0AW415
13 Coilfor260-460V(Z8)for
3TS35
3TY7443-0AW415
14 1NOContactBlock 3SB5420-0B
15 1NCContactBlock 3SB5420-0C
16 GreenLED 3SB5285-6HE06
17 AmberLED 3SB5285-6HL33
18 Timer 3RP1576-1NM208K
19 Timer 3RP1576-1NP208K
20 Addonblock 3TX4010-2A
21 Addonblock 3TX4001-2A
22 WLC415V 7UG0685-0FJ21
23 SensorforWLC_setof3 7UG0985-0YY00
24 LMRAfor415V 7UG0613-0FF20
25 LMRAfor200-400V 7UG0613-0FE20
26 Phaseselectorswitch 3LD4001-4DC30-0RC0
NOTE: ContactsalesforON&OFFPushButton,Terminalblock30A/60A,DualVAmeter,Doorknob,Rockerswitch,Current
transformer(200/5A).
FormoreTechnicaldetailslikeLMR-Awiring,operatingsequence,mountingdetailsetc.,
referInstallation&Troubleshootingguideno.A5E50797230A.

Fig. 6: Dimensional Drawing
Siemens Limited
OrderNo.A5E50798657000A/AA
Productdevelopmentisacontinuousprocess.Consequently
thedataindicatedinthisLeaetissubjecttochangewithout
priornotice.Forlatestissuecontactoursalesofces.
SACHINENTERPRISE
Disposal
Siemensproductsareenvironmentfriendly,which
predominantlyconsistofrecyclablematerials.
Fordisposalswerecommenddisassemblingandseparation
intofollowingmaterials:
METALS:SegregateintoFerroustypesforrecyclingthrough
authorizeddealer.
PLASTICS:Segregateaspermaterialtypeforrecycling
throughauthorizeddealer.Becauseofthelonglifetimeof
SiemensProductsthedisposalguidelinesmaybereplaced
byothernationalregulationswhentakingtheproductout
ofservice.Thelocalcustomercareserviceisavailableatany
timetoanswerdisposal-relatedquestions.
CustomerCareTollfreeno.1800220987 Email:[email protected]
S17895
181
4754
14 405
50
29
41 60
For WLC
sensors
94 84
410
372
390
7
Alternatemountingdimension
284x400(HoleØ7mm)
M5earthingscrew(2x)at
bottomonbothsides