LVC (Low Voltage Gontrol)MAGNETIC MOTOR

INTROD UCTIONThe s ing le and th ree phase De l ta de f in i te purpose LowVol tage Cont ro l(LVC) motor s ta r te rs have been des igned exc lus ive ly fo r use on De l tam a c h i n e r y .

The bas ic f unc t ion o f a De l ta de f in i te purpose s ta r te r i s to p rov ide ON-OFF motor cont ro l . In add i t ion to p rov id ing ON-OFF cont ro l , every De l tamotor s ta r te r o f fe rs the fo l low ino fea tures :

Motor Overload Protection - All starters are suppliedwith thermal overload relays which protect the powertool motor from burnouts due to excessive heat re-sul t ing f rom a susta ined motor over load, extendedmotor cyc l ing, or s ta l led rotor .

No Voltage or Low Voltage Protection (LVP) - Novoltage or low voltage protection prevents the danger-ous restarting of a power tool following a temporarypower fa i lure. Upon a loss of vo l tage or a reduct ionof voltage, the magnetic contactor in the starter wil lopen. When power is restored, the motor wil l not

\ - automat ica l ly restar t , but must be manual ly restar tedby pushing the star t but ton of the ON-OFF swi tch.

Low Vol tage Contro l (LVC) -The Del ta def in i tepurpose motor s tar ters prov ide lowvol tage contro l as

a unique safety feature. The pushbut ton ON-OFFswi tch operates at a 24 vol t level , not at l ine vol tage.fhe 24 vol t low vol tage contro l e l iminates thepossib i l i ty of dangerous e lect r ica l shock to the

operator .

This manual inc ludes a descr ipt ion of the basic LVC motor s tar ters,instructions for wiring the starters to the power source, and instructionsfor changing the voltage of an LVC motor starter.

Dated 5- 10-85

24 Volt

CONTROL SYSTEMS

P a r t N o . 4 3 8 - 0 1 - 6 5 5 - 0 0 0 2o D e l t a l n t e r n a l o n a l M a c h i n e r v C o r o . 1 9 8 5

;

TABTE OF COIIITETTITS

I n t roduct ion. ' . . . . . . . . ' . . . . . . . . . 1

Safety Ru1es. . . . . . . . . . . . . , . " . ' . '2

Single Phase LVC Magnet ic Motor Star ter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Instructions For Connecting The Single Phase Motor Starter

To The Power Supply . . . . . . . . . . . ' . ' . . . ' . . . . . .5Three Phase Magnet ic Motor Star ter . . . . . . . . . . . . . . . . . . . . . . . . . .6Instructions For Connecting The Three Phase Motor Starter

To The Power Supply . . . . . . . . . . . . . . . . . . . . . . . .8

Changing Vol tage Of LVC Motor Star ters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Mount ing The LVC Motor Star ter To A Steel Stand. . . . . . . . . . . . . . . . . . . . .1 1

SAFETY RUTES

1. Install ing and servicing should always be accomplishedby qualif ied electrical personnel.

2. Read the instruction manual before wiring and operatingthis motor starter. Failure to follow instructions can causeinjury.

3. Always disconnect the electrical power before removingthe cover of the starter.

4. Operate the motor starter only with the cover of thestarter in place.

5. Do not operate the machine unless the motor starter isproperly grounded as specified in the instructions.

6. Follow national and local electrical codes when wiringthe motor starter.

7. Always use proper heater coils as specified in theheater coil chart located on the inside of the starter cover.

8. Make sure the motor starter is disconnected from theelectrical power source before the primary connections ofthe control transformer are changed.

9. The LVC Motor Starter has been designed and en-gineered for use only on Delta Machinery.

10. Occasionally inspect the starter to ensure that it issecurely mounted, clean and dry.

11. Always use the LVC Motor Starter with an electricaldisconnect switch with over-current protection.

SINGTE PHASE LVC MAGNETIC MOTOB STARTERFig . 1 , i l l us t ra tes the s tandard s ing le phase LVC magnet ic The s ing le phase s ta r te r i s compr ised o f a power c i rcu i t and a

motor s ta r te r , De l ta Par t No. 52-704. cont ro l c i rcu i t .

'\-The star ter is made up of four basic components: 1) over loadblock, 2) magnetic contactor,.3) transformer, and 4) start/stopstat ion. The star t /s top stat ion is not shown in F ig. 1. Nei therare the input connect ions f rom the star t /s top stat ion, inputconnect ions for s ingle phase e lect r ica l power, or the leads f romthe motor.

A wir ing d iagram and schemat ic d iagram of the s ingle phase

LVC magnet ic motor s tar ter is shown in F ig. 2.

The wir ing d iagram indicates the re lat ive physical locat ion ofeach component , wi re, and terminal ; whereas. the schemat icd iagram does not show the physical re lat ionship of the com-ponents. The schemat ic d iagram does show in a st ra ight l ineform the c i rcu i t funct ions of the var ious components.

The oower circuit carries the motor load current and is shownwith heavy l ines in the wir ing and schemat ic d iagrams to repre-sent heavy gage wire s ized for the motor current . In the motorstar ter , the power c i rcu i t is wi red wi th b lack wires.

The main funct ion of the contro l c i rcu i t is to s tar t and stopthe electric motor by means of the start/stop pushbuttons.

The d iagrams in F ig. 2 i l lust rates the contro l c i rcu i t wi th l ightl ines to represent l ight gage wire s ized for contro l current . Thecontro l c i rcu i t consis ts of the contro l t ransformer wi th fuse,start/stop push buttons, start button interlock contact, mag-net ic contactor co i l , and over load swi tch. The contro l c i rcu i tis wi red wi th red wires in the motor s tar ter .

(-

INTERLOCK SWITCI-{577-OO-OO1-0262

T R A N S F O R M E R4 3 8 - O 1 - O 1 9 - O O 1 2

MAGNETICCONTACTOR

583-OO-OO1-0066

OVERLOADBLOCK

584-OO-OO1-OO38

FUSE1-027-OOO8

G R O U N DSTRIP

S I N G L E P H A S EPOWER INPUT

TERMINALS

START,/STOPSTATION

TERMINALSMOTOR TERMINALS

FIG. 1 - STANDARD SINGLE PHASE MOTOR STARTER.

\-

DELTA NO. 52-704

START

l- sroP Ir l z-L---

3-START/STOP STATION

,t r \ +

\-/

MAGNETIC CONTACTOR COIL

OL

L i L 2 t 2 3 OVERLOAD BLOCKWITH HEATER

F8fi?E.mSTARTSTATION

FUSEWIRING DIAGRAM

CONTROL TRANSFORMER

l rb l l l- i i -

t t ' * -2 r r 3

-i

MAGNETIC @NTACTOR

OL

SCHEMATIC DIAGRAM

NORMALLY CLOSEDOVERLOAD SWITCH

LEGEND

CONNECTAS PER LINE

VOLTAGE

Lr. l#-

I tl 5 r: J l l l

J

F IG . 2 - W IR ING D IAGRAM AND SCHEMATIC D IAGRAM OF THE S INGLE J

PHASE LVC MOTOR STARTER, DELTA NO. 52-704

I NSTRU CTI ON S FOB CONNECTING THE SINGTE PHASE MOTOBTO THE POWEB SUPPLY

In general , s tat ionary tools ordered wi th a s ingle phase motor1-1/2 horsepower or less are shipped f rom the factory wi th acord set and p lug. No f ie ld wir ing is necessary.

Stat ionary tools ordered wi th a s ingle phase motor greaterthan 1-112 horsepower must be wired in the f ie ld. The s inglephase LVC motor s tar ter should be wired as fo l lows:

Br ing the input power cord through the entrance hole in thebottom of the starter enclosure, Fig. 3. Connect the blackpower lead to terminal L1, the whi te power lead to terminalL2, and the green ground lead to the ground strip in the lowerleft hand corner of the starter enclosure.

STARTER

\-

Several points must be stressed and closely followed whenconnecting the input power to the motor starter.

1. To preserve the dust-tight integrity of the motor start-er, an oil-t ight box connector should be used for fasteningthe input cable to the starter enclosure at the entrance hole.

2. lf copper stranded wires are used for the input leads, thewires must be soldered dipped or t inned before they are con-nected to terminals L1 and L2 and the ground st r ip .

3. The wires must be connected to terminals L1 and L2through the f ront face of the terminal b lock as shown in F ig.4.The screws on the top of the terminal b lock are used for c lampingthe wires in the terminal b lock.

4. The ground st r ip has provis ions for four ground leads.The input power, start/stop station, and motor must begrounded via the ground strip. Two ground wires mustnever be inserted in the ground strip under one screw.

5. l f meta l condui t is used in p lace of cable, the greenground wire from the single phase input power system isomitted.

SCREWS ON TOP OF THE TERMINAL BLOCK AREU S E D T O C L A M P T H E W I R E S I N T H E B L O C K

TERMINALS L1 - L2 CONNECTIONS

Fis. 4

Fis. 3

THREE PHASE tVC MAGiIETIC MOTOR STARTERFig. 5, i l lust rates the standard three phase LVC magnet icmotor starter, Delta Part No. 52-702.

The three phase starter consists of four basic components:(1) overload block with heaters, (2) magnetic contactor(3) transformer, (41 start/stop station. The start/stop stationis not shown in F ig. 5. Nei ther are the input connect ionsfrom the startTstop station and the input connections from thethree phase motor or power supply.

A wiring diagram and schematic diagram of the three phaseLVC magnetic motor starter is shown in Fig. 6.

The wir ing d iagram indicates the re lat ive physical locat ion ofeach component , wi re, and terminal ; whereas, the schemat icd iagram does not show the physical re lat ionship of the com-ponents. The schemat ic d iagram does show in s t ra ight l ineform the c i rcu i t funct ions of the var ious components.

The three phase LVC motor starter is comprised of a powerc i rcu i t and a contro l c i rcu i t . The d iagrams in F ig.6 i l lust ratesthe power circuit with heavy l ines to represent heavy gagewire s ized for the motor current ; whereas, the contro l c i rcu i tis shown wi t r i i ight l lnes in the d iagrams to represent l ight gagewire sized for control current. In the motor starter. the powerc i rcu i t is wi red wi th b lack wires and the contro l c i rcu i t iswired wi th red wires.

INTERLOCK SWITCH577-OO-OO1-0262

TRANSFORMER438-01 -O19-OO30

MAGNETICCONTACTOR

583-OO-OO1-OO66

OVERLOADBLOCK

584-OO-OO2-OO38

F U S E43 1-027 -0008

G R O U N DSTRIP

MOTOR THREE PHASE POWERTERMINALS INPUT TERMINALS

START/STOPSTATION TERMINALS

FIG. 5 - STANDARD THREE PHASE MOTOR STARTER,

DELTA NO. 52.702

I

i t-r l-l I

L f L 2 L 3 | 2 3

WIRING DIAGRAM

_+++r | -_-JIIT:F [- , =,___o-JioffEh .o.nlg5o. ,?I+il-

STARTSTOP I

l ll l ^

+t H a-

3START/STOP STATION

_.qrz--1rfu

OVERLOAD BLOCKWITH HEATERS

CONTROL TRANSFORMER

I- t^ | | ^

L c r i

L g r r

2 r l 3

MAGNETIC @NTACTOR

SCHEMATIC DIAGRAM NORMALLY CLOSEDOVERLOAD SWITCH

LEGEND

F IG . 6 - W IR ING D IAGRAM AND SCHEMATIC D IAGRAM OF THE THREE

PHASE LVC MOTOR STARTER. DELTA NO. 52.702

MAGNETIC CONTACTOR COIL

FUSE

IIIISTRUCTIOIIIS FOR COTIIIIECTITTIG THE THBEE PHASE MOTOR STABTEBTO THE POWER SUPPTY

All three phase motor starters must be wired in the f ield. Referts Fig. 7, bring the three phase power cord through theentrance hole in the bottom of the starter enclosure. Connectthe red, white and black power leads to terminals L1-L2-L3and the green ground lead tq the ground strip in the lower lefthand corner of the starter enclosure.

NOTE: l f the machine runs backwards once the motor isturned on, s imply in terchange any two of . the three inputpower leads in terminals L l -L2-L3.

J

Fis.7

Several points must be stressed and closely followed whenconnecting the input power to the motor starter.

1. To preserve the dust-tight integrity of the motor starter,an oil-t ight box connector should be used for fastening the in-put cable to the starter enclosure at the entrance hole.

2. lf copper stranded wires are used for the input leads, thewires must be soldered dipped or t inned before they are con-nected to terminals L l -L2-L3 and the ground st r ip .

3. The wires must be connected to terminals Ll -L2-L3

through the f ront face of the terminal b lock as shown in F ig. 8.The scr'ews on. the top of the terminal block are used for clampingthe wires in the terminal b lock.

4. The ground strip has provisions for four ground leads.The input power, start/stop station, and motor must begrounded v ia the ground st r ip . Two ground wires must neverbe inserted in the ground strip under one screw.

5. l f meta l condui t is used in p lace of cable, the greenground wire from the three phase input power system is omitt-ted.

SCREWS ON TOP OF THE TERMINAL BLOCK AREUSED TO CLAMP THE WIRES IN THE BLOCK

TERMINALS L1 - L2 - L3 CONNECTIONS

Fig. I

CHAIIIGIITIG VOTTAGE OF tVC MOTOR STARTERS

f*

oo(o

It

,*

oaov

A-

sottt(v

,-

o5oo(!

l f i t ever becomes necessary to operate a stat ionary power toolf rom a l ine vo l tage o ther than the vo l tage fo r wh ich the too lwas or ig ina l l y w i red , th ree s teps must be fo l lowed to mod i fythe e lec t r i ca l package fo r opera t ion f rom the new l ine vo l tage.Disconnect Motor Starter from power source and proceed as?;Tiffi--STEP 1-Remove the motor junct ion box cover and changethe motor lead connect ions for the proper l ine vol tage asshown on the motor nameplate.

Step 2-Change the primary of the control transformer. Movethe transformer primary pigtail to the proper term inalcorresponding to the new input vo l tage. See Fig. 10.

NOTE: For 2O8 volt power sysrems, connect the transformerto the 200 volt tap, NOT the 230 volt tap.

Continued on next page

1 15 VOLT TAP

C O M M O N

F IG . 1O _ CHANGING VOLTAGE

STEP 3-Change the heater elements in the overload block forthe proper voltage/amperage rating shown on the motornameplate,

For every LVC motor starter, a heater coil chart is located onthe inside cover of the LVC motor starter enclosure' SeeF i s . 1 1 .

Note from the motor nameplate, the full load current for thenew l ine vol tage. Mul t ip ly the fu l l load current by 0.9, andselect the heaters from the chart equal to or immediatelygreater than the product of 0.9 times the full load amperes.

For example: Assume it is necessary to specify heaters for a

three phase, 71/2 HP,230 volt motor with a nameplate full load

ampere rating of 2222xO.9 = 19 .8 amperes

Specify HEATER NO. CR123C2288 lrom chart. Three (3)

heaters required for three phase power.

P/N CR123 c --

,3iil.37.41.46.52.57.61.67.75.u.94

1.031 . 1 41 .301.42' ! . 61

1 .721 .932 . 1 02 .92.U2.863 . 1 33.323 6 84.084 .615 .215.626 . 1 26.8i17.708 .€9 . r 99.92

1 1 . 112.21 3 . 51 4 . 61 6 . r

17 .919 .320.522.624.827.O

co36Aco39Ac0434c0484c054Ac060Ac0664c0714@78Ac087Ac0074c109Ac118Ac131Ac148Acr53Ac184Acl96Ac220Ac239Ac268Ac3014c3264c3564c3794c41 9ACrt66Ac5264c5924c630Ac695AcrTaAc867Ac95sAc1048c 1 1 3 8c1258c1378c 1 5 1 8cl638c1808c1988c214tJc2288czsoBc2738

33J

33333333333366666

1 0l 01 0to1 01 51 5nnn252530303035Q

4550506060m70t0$

P/N CR123 c

.39

.42

.45

. 5 1

.56

.65

.73

.81

.901 .001 . 1 0'1 .211 . 3 51 . 5 01 .641 .781 .982 1 52.422.883.223.533 8 94.304.77

5 . 1 45.636.267 . 1 57.58

8.399 . 1 19 6 7

I 1 . 01 1 . 91 4 , 31 6 . 117 .219 .220.521.823.426.127.O

c054Ac0604c066Ac0714c0784cmTAc097Ac109Ac 1 1 8 Ac 1 3 1 Ac148Ac1634c18{Ac l95Ac2204c239Ac268Ac3014c326A

33333333333336666F

6c3s6A | 10c379A | 12

- c 4 1 9 A | 1 2c466A | 15c5264 l 15c592A I 15c530A I nc695A I Nc778A | 25c867A I 25c955A | 30

c1048 I 30I C 1 1 3 8 I 3 5

c1258 | 35cr37B i 40c 1 5 1 8 | 4 5

c1638 | 50c1808 | 60ct98B | 60c2148 | 70c2288 | 80c2508 | 80c2738 I 80c3038 I 90CgtoB | 90

SINGLE PHASE THREE PHASE

F ig . 11

1 0

\

ilOUiITIiIG THE tVC II'IOTOR STABTEBTO A STEET STAIIID

( ilhen field mounting an LVC motor starter, it is necessary tovprovide three 5/16" mounting holes and a 2" x 6,, cable

clearance slot in the base or cabinet of the machine. See Fig.12.

The LVC enclosure is supplied with three 1/4"-20 weld nutstacked in the bottom of the enclosure at the position shown inFis. 12.

Assemble the LVC Motor Starter flush to the base or cabinetof the machine using three flat washers and three 1/4,'-20machine screws suppl ied.

FIG. 12-MOUNTING HOLES ANDCABLE CLEARANCE SLOT FORTHE LVC STARTER ENCLOSURE

-TI

7 ".3t (5/16l3 HOLES REOD.

11

^itrTEIJAPARTS, SERVICE OR WARRANTY ASSISTANCE

All Delta Machines dnd accessories are manufactured tohigh quality standards and are serviced by a network offactory service centers and authorized service stationslisted in your owner's manual. To obtain additional infor-

mation regarding your Delta quality product or to obtainparts, service or warranty assistance, please call Delta'stol l-free'hotl ine' telephone number.

FACTORY SERVICE CENTERS

0rlando 32803PorteFCable Corporalion1807 1/2 Winler Park Road

305-644-8100

Tampa 33609PorleiCable Corpolation4536 W. Kennedy Blvd.813,877-9585

GEORGIAForest Park 30050PorteLCable CorPoration4017 Jonesboro Road404363-8000

tLLtN0tsAddison (Chicago) 60101PorteFCable Corporation311 Laura Drlve312-628-6100

LOUISIANAKenner 70062PorterCable CorPoration2440-0 Veterans Memorial HwY

504.469-7363

IIARYLANDBaltimore 21205PorterCable Corporation4714 Erdman Avenue301-483-3100

Hyattsvil le 20781PorlerCable Corporation4811 Kenllworth Avenue301,779-8080

Pr in ted in U.S.A.Nupp Pr in t ing Co.

' ' iq

Delta maintains a modern,efficient Parts DistributionCenter, maintaining aninventory of over 10,000 Partslocated in MemPhis,Tennessee.

Highly qualif ied and exper-ienced Customer ServiceRepresentatives are standingby to assist you on weekdaYsfrom 8:00 A.M. to 5:00 P.M.Memphis t ime.

Memphis, TN 381184290 Raines Road

Phone: (901) 363-8800

#e.TL'NE800-223-PART

(ln Tennessee 800-238-PART)

ALABAMABirmingham 35209PorterCable Corporation131 W. Oxmoor Road, Suite 105

205-942-6325

CALIFORNIALos Angeles 90007PorterCable CorPoration2400 S. Grand Avenue213-749.0386

Orange 92668PorterCable Corporalion385 North Anaheim Blvd.714-634-4111

San Leandro 94577PorteFCable Corporation3039 Teagarden StreetP.O. Box 1913415-357-9762

COLORADODenver 80207PorterCable CorPolation4900 E. 39th Avenue303,388-5803

CONNECTICUTManchester 06040PorterCable Corporalion57 Tolland Turnpike203-646-1078

FLORIDAHialeah 33014PorteLCable Corporation16373 NW 57lh Avenue305-624-2523

MASSACHUSETTSBoston (Allston) 02134PoilerCable Corporalion414 Cambridge Skeet617.782-1700

MICHIGANGrand Rapids 49506PorteFCable Corporation2750 Birchcresl Drive S.E.61 6-949-9040

Southiield (Detroit) 48075PorlerCable Corporation18650 W. Eight [4ile Road

313-569-4333

MINNESOTAl\rinneapolis 55429PorlerCable Corporation4315 68th Avenue North612-561-9080

MtssouRlNorth Kansas City 641 16PorterCable CorPoration1 141 Swiil AvenueP.0. Box 12393816-221-2070

Si.Louis 63119PorteFCable CorPoralion7574 Watson Road314-968-8950

NEW JERSEYUnion 07083PorlerCable Corporat on945 Ball Avenue201-964-1730

NEW YORKFlushing 11365PorteFCable Corporation175-25 Horace Harding Expwy212-225-2040

NORTH CAROLINACharlotte 28209PorlerCable CorPoration4612 South Boulevard704-525,4410

oHtoCleveland 44146PorterCable Corporation5188 Richmond Road216-675-1244

Columbus 43215PorlerCable CorPoration4560 Indianola Avenue614-263-0929

PENNSYLVANIABensalem 19020PofterCable CorPoratlonExpressway 95lnduslrial Center3599 l\.4eadow Lanes215-638-41 14

RHODE ISLANDProvldenle 02914PorlerCable Corporation1009 Waterman Avenue401-434-3620

TEXASDallas 75220PorletrCable Corporation10714 N. Spemmons Freeway214-353-2996

Holston 77092PorteFCable Corporation5201 Nlitchelldale, Suite B-9713-682-0334

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VIRGINIARichmond 23220PorterCable CorPoralion1705 Dabney Road804-257"7348

WASHINGTONRenlon 98055PorteFCable Corporation268 Soulheasl 43rd Skeet206,251-6680

wlscoNsrNMilwaukee 53222PorteLCable CorPoration10700 W. Burleigh Street414.774.3650