Siemens RAJA+ 3TE7121-1HC14-1A Series Guide

RAJA+
Direct Online
Controller 3TE7121
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+Direct Online Controller
Selection of Controller
• ReferTable1forrecommendedselectionof3TE7DOL
Controllers.
• 3TE7121controllersareavailablefrom3HP/2.2kWto10HP/
7.5kWsuitableforSubmersiblepumpapplicationmotors.
Fig. 1: DOL Controller
Fig. 2: DOL 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
12
13
4
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Starter
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

Installation:
• Openthedoorbyunscrewingthedoorknob.
• 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.
 – Removeapprox.lengthofinsulationasperfollowing
table:
Lengthofinsulation
removal(mm)
Cucablesize
(mm2)
62.5
5 1.5
 – Connectlineandmotorcablesexactlyasperwiring
diagrampastedinsidethecoverofthestarter.
 – Terminatetheincomingsupplycablesonterminal
blockTB1&outgoingcablestomotoronterminal
blockTB2(Tighteningtorque-Refertable2).
NOTE:LMRAissetinManualmode(Factorysetting)
• Settheoverloadrelayscale(Fig.2)usingproperscrew
driverasfollows:
 – Settheoverloadrelaytoratedcurrentmentionedon
motornameplate.
 – PressgreenbuttonofthecontactblockCB1(Fig.2)
tostartthemotorandwaittillitreachestonormal
speed.Reducetheoverloadrelaysettingstillittrips.
 – Settheoverloadrelayatslightlyhighervalue.
 – Allowaresettimeappr.4min.andresettheoverload
relaymanually.
 – Restartthemotor.Iftherelaydoesnottrip,consider
theoverloadrelayasproperlyset.
  Ifittrips,setitatlittlehighervalueandrecheck.
 – Presstheredknob(Fig.2)ontheoverloadrelayto
stopthemotor.
 – Closethedoorbyscrewingthedoorknob.
Caution:
• During commissioning or maintenance always ensure
that the main supply is disconnected by switching off
the main switch & Rocker switch.
• 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.
Operation:
• Ensurethedoorislocked.
• RotatetheMechanicalLatchawayfromOFFpushbutton.
• SwitchOntherockerswitchmarked‘I’.
• 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.
• 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.3):
 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.3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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.4)
FormoreTechnicaldetailslikeLMR-Awiring,operating
sequence,mountingdetailsetc.,referInstallation&
Troubleshootingguideno.A5E50797230A.
2

3
Replacement of coilFig. 3: Contactor – Relay Connection
Hookonrelayfor
engagement
Contactor
outgoingterminals
Fig. 4: Wiring Diagram
L1, L2, L3: 3φsupply
Q1: Line Contactor
K1: Bimetal relay
K3: Line Monitoring 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: Outgoing terminal block
TB4: LMR terminal connector
Table 1:
Motor /
Submersible
Pump Rating At
415V
Starter MLFB Contactor MLFB
Thermal Overload
relay
MLFB
Range
(A)
Max.FullLoad
Current (Amp)
for Motor /
Submersible
Pump
Recommended
Max.
Back-up HRC
Fuse rating
Siemens Make
type 3NA7 –
500V
Cu cable size
(mm2)
3/2.2 3TE7121-1HC14-1A** 3TS3010-0A**-08K 3US5000-1H8K 5–8 6.5 20 1.5
5/3.7 3TE7121-1KC16-1A** 3TS3110-0A**-08K 3UW5102-1K 8–12.5 10
25
1.5
6/4.5 3TE7121-2AC17-1A** 3TS3210-0A**-08K 3UW5102-2A 10–16 12 1.5
7.5/5.5 3TE7121-2BC18-1A** 3TS3210-0A**-08K 3UW5102-2B 12.5–20 14.5 2.5
10/7.5 3TE7121-2CC21-1A** 3TS3311-0A**-08K 3UW5202-2C 16–25 19.5 32 2.5

Selection of contactor coil and LMRA
Contactor coil
voltage code
**
Coil voltage
(VAC)
Line Monitoring
Relay
Z6 200-400 7UG0613-0FE20
Z8 260-460 7UG0613-0FF20
Table 2: Terminal torque values
Sr.
No. Type Size Torque (Nm)
1 3TS30..32(Powerwiring) M3.5 0.8-1.4
2 3TS33(Powerwiring) M4 1.0-1.5
3 Terminalblock30A M4 0.8-1.4
4Contactblock3SB5 M3.5 0.8-1.2
5 CoilTerminalsA1/A2 M3.5 0.8-1.1
6Aux.terminalof3TS30/32 M3.5 0.8-1.1
7 3TX4001-2A/3TX4010-2AAux.
terminals
M3.5 0.8-1.1
8Aux.terminalsofallBi-Relays M3.5 0.8-1.2
93UW51/52,3US50 M4 1.0-1.5
10 Indicatinglight–Amber/Green M3 0.8-0.9
11 DualVAMeter–Currentterminals M4 1.2
12 DualVAMeter–Voltageterminals M4 1.2
13 Multiwaystrips M3 0.4-0.6
14 SelectorSwitch3LD4 M3 0.5
Table 3 : Spares list
Sr.
No. Description Order No.
1 Contactor 3TS3010-0AZ6-08K
2 Contactor 3TS3010-0AZ8-08K
3 Contactor 3TS3110-0AZ6-08K
4Contactor 3TS3110-0AZ8-08K
5 Contactor 3TS3210-0AZ6-08K
6Contactor 3TS3210-0AZ8-08K
7 Contactor 3TS3210-0AZ6-08K
8Contactor 3TS3210-0AZ8-08K
9Contactor 3TS3311-0AZ6-08K
10 Contactor 3TS3311-0AZ8-08K
11 ThermalOverloadRelay 3US5000-1H8K
12 ThermalOverloadRelay 3UW5102-1K
13 ThermalOverloadRelay 3UW5102-2A
14 ThermalOverloadRelay 3UW5102-2B
15 ThermalOverloadRelay 3UW5202-2C
16 Coilfor200-400V 3TY7403-0AZ6
17 Coilfor260-460V(Z8) 3TY7403-0AW415
18 1NOContactBlock 3SB5420-0B
19 1NCContactBlock 3SB5420-0C
20 LMRAfor200-400V 7UG0613-0FE20
21 LMRAfor260-460V 7UG0613-0FF20
22 Phaseselectorswitch 3LD4001-4DC30-0RC0
23 Addonblock 3TX4010-2A
24 Addonblock 3TX4001-2A
25 AmberLED 3SB5285-6HL33
26 GreenLED 3SB5285-6HE06
NOTE: ContactsalesforON&OFFPushButton,Terminalblock30A,DualVAmeter,Doorknob,Rockerswitch.
FormoreTechnicaldetailslikeLMR-Awiring,operatingsequence,mountingdetailsetc.,
referInstallation&Troubleshootingguideno.A5E50797230A.

Fig. 5: Dimensional Drawing
Siemens Limited
OrderNo.A5E50539518000A/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]
S17894
49
28
155 65
235
303
312
7
3583, 4
280
152
Ø 32 Cable entry hole
from bottom
M5earthingscrew(2x)
at bottom on both side
4xmounting
Hole Dia.7mm, M6