invotech ysf - refrimate.co.za

YSF series Semi-HermeticRefrigeration Scroll Compressor

InvoTech

Special Design ForLower Temperature Application

It is the outstanding engineering capability that builds the incomparable reliability

It is the outstanding engineering capability that builds the incomparable reliability

1

YSF Series

Discharge Temperature Sensor

Service Valve - Discharge

Service Valve - Suction

Terminal Box

Oil Sight Glass

Crankcase Heater 75WOil Drain with Schrader Valve

Power Line InletCurrent Transformer (Only for Enhanced Type Controll Board)

EVI Control Board

EVI PHE

Liquid Outlet

EVI EXV

Temperature Sensor after EXV

Liquid Inlet

Temperature Sensor after PHE

EVI Vapor Inlet

Bolt Holes for Threaded Flange of Oil Controller

• Specific Design for Refs. Application, Not Only the Scroll Set But Also the Unit, Precise Product-Definition Based on Customer's Need

• Both Build-in Radius and Axial Compliances Design, Improved Floating Seal Design for Better Energy Efficiency

• Excellent Discharge Temperature Management to Stretch Operation Envelope

• Accurate Calculation of Load and Sealing Force for Running Sound Optimization

• High Efficiency Motor Design

• Integrated Vapor Injection and Controller

• Evaporating Temperature can be Lower to -40ºC

Models

2

(HP)

7-13 HP Low Temperature Application15 HP Will Be Available Soon

Y S F 90 E 1 G - V 10 0

Engineering Code

A - R22

E - R404A

1 - 380~420V/3PH/50HZ

or 460V/3PH/60HZ

5 - 380V/3PH/60HZ

7 - 220V/3PH/60HZ

Capacity at Rating Point, 50Hz: X 100 Watt

Nomenclature

YSF Series

Model Code

V - Vapor Injection

G - Sight Glass and Welding Joint

Product Type

Semi-Hermetic ScrollAccessory Code

20 - Enhanced Type Controll Board

10 - Standard Type Controll Board

Application

F - Low Temp.

3

R22Model

E.T. -31.6°C, C.T. 40.6°C, R.G. 4.4°C, No Subcooling

Electricity

Power in Horse Power (HP)

Displacement (CC/Rev)

Refrigerant

Capacity (W)

Power in Watt (W)

COP (W/W)

Running Current (A)

LRA (A)

MOC (A)

Crankcase Heater (W)

Fitting Dimensions (Inch)

Discharge Tube (OD)

Suction Tube (OD)

Product Dimensions(MM)

Length (L)

Width (W)

Height (H)

Feet Dimensions (Hole)

Oil Type

Initial Charge Volume(L)

Recharge Volume(L)

Max Operating Pressure(MPa)

High Side

Low Side

Weight(kg)

380V/50Hz/3P

R22

75

7/81 1/8

480380558

190 X 190(8.5)

3GS2.72.6

3.02.0

YSF60A1G-V100

7

115.5

6000

4170

1.44

9.2

117

17.6

90

YSF65A1G-V100

8

123.0

6400

4450

1.44

9.6

117

19.0

90

YSF75A1G-V100

9

145.4

7400

5070

1.46

10.4

117

22.0

91

YSF90A1G-V100

12

189.1

9500

6420

1.48

12.1

117

28.0

91

YSF85A1G-V100

10

167.2

8480

5800

1.46

11.2

117

25.0

91

YSF100A1G-V100

13

197.1

10000

6760

1.48

12.6

117

24.7

91

Specifications

YSF Series

4

R404AModel

Electricity

Power in Horse Power (HP)

Displacement (CC/Rev)

Refrigerant

Capacity (W)

Power in Watt (W)

COP (W/W)

Running Current (A)

LRA (A)

MOC (A)

Crankcase Heater (W)

Fitting Dimensions (Inch)

Discharge Tube (OD)

Suction Tube (OD)

Product Dimensions(MM)

Length (L)

Width (W)

Height (H)

Feet Dimensions (Hole)

Oil Type

Initial Charge Volume(L)

Recharge Volume(L)

Max Operating Pressure(MPa)

High Side

Low Side

Weight(kg)

380V/50Hz/3P

R404A

75

7/81 1/8

480380558

190 X 190(8.5)

POE2.72.6

3.02.0

YSF60E1G-V100

7

115.5

6910

4369

1.58

9.5

117

17.9

90

YSF65E1G-V100

8

123.0

7360

4660

1.58

10.0

117

19.1

90

YSF75E1G-V100

9

145.4

8704

5440

1.60

10.8

117

22.3

91

YSF90E1G-V100

12

189.1

11320

6988

1.62

12.9

117

28.8

91

YSF85E1G-V100

10

167.2

10010

6256

1.60

11.9

117

25.7

91

YSF100E1G-V100

13

197.1

11800

7284

1.62

13.3

117

27.0

91

E.T. -31.6°C, C.T. 40.6°C, R.G. 4.4°C, No Subcooling

Specifications

YSF Series

5

YSF60-YSF90

Con

dens

ing

Tem

pera

ture

(°C

)

70

65

60

55

50

45

40

35

30

25

20

15

10

5

0

Evaporating Temperature(°C)

-45 -40 -35 -30 -25 -20 -15 -10 -5 0 5

20°C Return Gas Temperature, No Sub Cooling

R22

70

65

60

55

50

45

40

35

30

25

20

15

10

5

0


-45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15


Con

dens

ing

Tem

pera

ture

(°C

)

YSF100

YSF Series

Operating Envelope

6

Con

dens

ing

Tem

pera

ture

(°C

)C

onde

nsin

g Te

mpe

ratu

re (°

C)

70

65

60

55

50

45

40

35

30

25

20

15

10

5

0


-45 -40 -35 -30 -25 -20 -15 -10 -5 0 5

70

65

60

55

50

45

40

35

30

25

20

15

10

5

0


-45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15



YSF60-YSF90

YSF100

R404AYSF Series

Operating Envelope

R22

7

YSF65A1G-V100

YSF60A1G-V100

YSF75A1G-V100

Capacity @ 20°C Return Gas Temperature, No Sub Cooling

656055504540353025656055504540353025656055504540353025656055504540353025656055504540353025656055504540353025

-35

4380454548325163546256525657

5444502444853919341830732976

4663483951445497581560176023

5796534947754173363932723169

5513572160826498687571147121

6784626155894884426038303709

-30

5397562959776364671369476991

5744524546504049353632013136

5746599463646776714773967443

6116558549514311376534083339

6793708675248010844987448800

7159653757955047440739893908

-25

6585687572757707809683648437

5970540447644142362833153294

7011732077458205861989058982

6356575450724409386235293507

8288865491579701101901052810619

7440673559385161452141314106

-20

796182998740920896279920

10010

6156553648634230372934503486

8476883593059803

102491056110658

6555589451784504397036733711

10021104451100111590121171248612600

7672689960615272464742994344

-15

9340954199161038910883113221162911729

68796338567549824351387336413746

994510158105581106111587120541238112487

73246748604253044632412438773988

1175712010124821307713698142511463814763

85737898707262095422482745384668

-10

1110811342117441223912749131981351013608

71436549585651554538409739234109

1182612075125041303013573140511438314488

76056973623554894832436241774374

1398114276147821540516047166121700517128

89028162729864255656510648895120

-5128641312113379137991430514821152711557715664809574606826611554184827443443314610

136961397014244146911523015780162581658416677861879437268651057685139472146114908

1619216516168401736818006186551922119607197161008892978507762167526016552653985745

0151271539815668160961660417117175561784817913852878667203648658055253492049005284

161051639316682171371767818224186921900219072907983747669690561805592523952175625

1904019381197222026020900215452209822465225481062898028977808372346546613261076585

517390176741795818394189041941219842201182016389618271758068566192567854065469595818514188171912019583201262066821126214192146795418806807073006592604557565823634321888222462260423152237942443424976253232537911168103079446854577177076673868167425

10196521995020248206912120321708221282238922412939586767957722765796103589260386632

2092421241215582202922574231122355923837238621000292378471769570046498627464297061

24737251112548626044266882732427853281812821111708108129916900781997606734375258265

-40

3518360738224087432644624420

5033470542353716323928962780

3745384040694351460647514705

5359500945093956344930842959

4428454048105144544556175563

6273586352784631403736103464

YSF Series

Capacity

Capacity(W)

Watt(W)

E.T.(°C)

Capacity(W)

Watt(W)

Capacity(W)

Watt(W)

C.T.(°C)Model

R22

8

YSF90A1G-V100

YSF85A1G-V100

YSF100A1G-V100


656055504540353025656055504540353025656055504540353025656055504540353025656055504540353025656055504540353025

-35

6341658169957474790781838191

7803720164295618489944054266

7169744079098450894092519260

8735806171976289548449314775

7474775682458810932096459654

9106840475036556571851414979

-30

78138150865492139718

1005810121

8234751966655805506845884495

883392149784

10417109871137111443

9217841774616498567451365032

92099606

1020010860114551185511930

9609877577796774591553545246

-25

953399541053211158117201210912214

8558774768295937520047524722

10778112531190712615132511369113809

9579867276456645582153195286

11237117321241413151138151427314397

9987904179706928606955455511

-20

11526120141265313331139371436114493

8825793569716064534549454997

13031135831430515071157571623716385

9878888378046788598355365593

13585141611491415713164271692717083

10299926181367077623757715831

-15

1352313813143561504115756163911683616981

98609085813571416237555252195369

1528915617162311700517813185321903519198

1103810169910679946981621558426010

1593916282169221772818571193201984520015

1150710602949383347279648060916266

-10

1608116420170031771818457191071955919701

102399388839473906505587356245889

1818118564192232003220867216022211322274

1146210509939782727282657462956593

1895519354200412088521755225222305423221

1194910956979786247592685465636873

-518624189961936919977207102145722108225522267811603106949785876577666919635662096608

210562147721898225862341524259249952549725639129881197110953981286937745711569507396

2239122830235472441125292260592658226730

12480114191022990638075741872457711

02190022292226842330324039247812541825839259341222411275103259297832175297053702475742476025203256462634627178280172873729213293211368412621115581040793148428789578638478

2627526738274682833529209299603045630569

13158120501084997118787823181978839

5251762558825999266302736828104287272912629191128451185510865982888768139775078408540

2846328929293943010730942317743247832930330031437913271121631100299359111867587769559

102845228883293142995630697314273203732413324481346712436114051036094308749844686559506

3216732655331423386734706355313622036646366851507413921127671159710556979394559688

10641

-40

5093522155335917626364606398

7215674460715326464341523984

5758590362556690708173047234

8076754967955962519746474460

6003615465226974738276157542

8420787070846216541848454650

YSF Series

Capacity

Capacity(W)

Watt(W)

E.T.(°C)

Capacity(W)

Watt(W)

Capacity(W)

Watt(W)

C.T.(°C)Model

9

Capacity(W)

Watt(W)

E.T.(°C)

YSF65E1G-V100

YSF60E1G-V100

Capacity(W)

Watt(W)

Capacity(W)

Watt(W)

YSF75E1G-V100


C.T.(°C)Model

605550454035302560555045403530256055504540353025605550454035302560555045403530256055504540353025

-40

3684408444484779508053535601

5898529546874118363132693077

3922434847365088540856995963

6280563849914384386634813276

4637514055996015639467387050

7351659958425132452540743835

10184152005021644231982471726202276562908295568583762967405958532748914694196062134723043246992631527896294453096310175913881227175634356725208499723179252372724329200311113298034811366061191010696950883997425663960965850

-35

4772521156135983632166326918

5973536747624203373233953233

5080554859766370673070617365

6360571450704474397436143442

6006655970667530795783488708

7444668859355238465142304029

-30

5914641168727299769580628405

6088547048614304384335223384

6297682673167771819285848948

6482582451754582409237503602

74448070865091879685

1014810579

7587681760585364478943894217

-25

714477198256876092329676

10094

6244560849874425396636543532

76068218879093269829

1030210746

6648597153094711422338903760

89939715

1039211026116201217912705

7782698962155515494345544401

-20

84949165979910398109661150512017

6446578351434569410537943680

904497581043211070116751224912794

6863615754764864437040393918

10692115361233413088138031448115126

8033720764095694511547284586

-1591709997

107831153212246129281358114208737866955999533247384261394438329764

1064311480122771303813764144601512778557128638756775045453742004079

115431258313572145151541416273170951788491948344747666455905531149164775

-10107221168412604134881433615152159391669977266996625855574936443941093989

114161243913420143601526316132169701777982267448666359175256472643744247

134961470615865169771804519072200622101996288718780069266152553251214972

-51247313588146631569916701176701860919521813573506564582251664641429041561327914467156111671517781188131981320784866278256989619855004941456744251569917103184561976121022222412342324571101399160818072556438578353465180

01445315742169901819919373205142162522708860977616919612854304869449043361538816760180881937620626218412302324177916682637367652457815184478146161819319815213852290724385258212721928583107299672862376366767606955965403

5164341789619317206992204523358246402589590838172727464345694509846914515

174971905320566220372347124869262342757096708700774568506062542849944807

20686225262431426054277482940131015325951131910184906580187096635458465626

R404AYSF Series

Capacity

10

R404A

Capacity(W)

Watt(W)

E.T.(°C)

YSF90E1G-V100

YSF85E1G-V100

Capacity(W)

Watt(W)

Capacity(W)

Watt(W)

YSF100E1G-V100


C.T.(°C)Model

605550454035302560555045403530256055504540353025605550454035302560555045403530256055504540353025

-35

69087544812786629152960210015

8563769368266024535048664634

7810852991889793103471085611323

9585861176416743598954475188

81438892957910209107871131811805

9993897879667030624356795408

-30

85639282994910567111401167212168

8727784169686169550950484850

9681104941124811947125951319713757

9768877778006906616756515429

10093109411172712455131311375814342

10184915181317200642958915660

-25

10343111751195312682133661400814613

8951803871486343568552385062

11694126341351414338151111583716521

10020899880027100636458635667

12192131721408914948157541651117224

10446938183427403663561125908

-20

12298132691418615054158761665617398

9240829073726549588454385275

13904150011603817019179491883119670

10343928082527331658660875905

14495156401672117744187131963220507

10783967486037643686663466156

-151327714473156111669517729187171966320570105759597859976436792610856545492

15010163631764918875200442116122230232561183810743962685567603683763296148

156491705918400196782089722062231762424612342112001003689207927712865986410

-1015524169151824819527207552193723076241761107410028897179667076636358905718

175511912420631220772346524801260892733212397112251004289177921712365936401

182981993821509230162446425857271992849612924117031046992978258742668736674

-518057196722122822729241792558226941282621166110536940983457405665261495958

204152224124000256972733628922304603195213054117931053393418289744668836669

212842318725021267902850030153317563331213609122951098197398642776371766953

020925227912459726348280472969931307328761234011125991887837783698064366215

236582576727809297883171033577353963716913814124531110298328712781372056957

2466426863289923105633059350063690238751144021298311575102509083814675117253

5237932590927966299673191633817356733749013019117141042792228162730867246472

2690029292316183388036083382334033242386145741311211672103239136818075277244

-40

5334591364406919735477508109

8455759167195903520446864411

6030668572817822831587629168

9464849775216608582652464937

6287696975908155866891349558

9867885878416889607454695148

102666029028313353358635784379344003942104136991230310936966185407636701167283014232818354273797140457428884526847602153341377112241108149559854778487532

YSF Series

Capacity

11

Service Valve - Discharge7/8" I.D.

LP Switch Connection1/4" SAE

Oil Sight Glass3/4" NPT

Crankcase Heater3/8" NPT

Oil Drain1/4" NPT

116.

851

.8

21.3

Lock Nut

PHE

EXV

188.8 182.5

190.5

252.7

282.5

40

252.

719

0.5

180.

6

18°12

6.5

110.

5

196.

5

20°

Ø12.97 I.D.


Discharge Temperature SensorLiquid Inlet


Liquid Outlet

130Ø 237Flange O.D.

Ø 12.97 I.D.

516.

9

479.

9

435.

1

316.

811 30

278

106.

589

.378

80

Terminal Box Layout

T1T2

T3

Earth

Mounting KitØ 50

YSF Series

Product Dimensions 7-13HP

Current Transformer(Only for Enhanced Type Controll Board)

Service Valve- Suction1 - 1/8" I.D.with Filter

12

Main Features of YSF Series:• Classic vertical design• Maintainability - Semi-hermetic design, all the parts can be removed and replaced• Higher reliability - Dual compliances design - Strong capability to tolerate liquid flood back and impurities• Less vibration and noise• Wide operating range - Integrated EVI technologies - The evaporating temperature can be lower to -40°C• Higher energy efficiency - High compression ratio is specially designed for refrigeration - Efficient economizer cycle• More intelligent design - Control of EVI - Controller of refrigeration system (enhanced type control board) - Combination of fan speed regulation, start-stop and diagnosis (enhanced type control board)

1. Safety Instructions:YSF serials Semi-hermetic scroll compressors are produced in strict accordance with international safety standards.This section focuses on safe use of a user. Before carrying out any operation, this safety instruction should be carefully read. Please reserve it for reference at any time.The compressor should be installed, tested and maintained by specialized technicians only; electrical connections must be operated by authorized and trained personnel.

Attention: • Avoid collision and fall down during the transportation• Lubricant must be correctly chosen and be the same as indicated on the compressor’s nameplate• Ensure that the power supply can satisfy the specific parameter as is shown on the compressor’s nameplate• Release the internal pressure before operating, the compressor is filled with dry nitrogen while leaving the factory

Prohibition:• Extract vacuum using the scroll compressors• Run the compressor which is in vacuum status• Apply power to the compressor which doesn’t connect to system• Run the compressor without charging refrigerant• Run the compressor outside of the published envelope• Discharge refrigerant directly into environment without • Hi-pot test in vacuum status

YSF Series

Application Instruction

Warning:• Strictly forbid the excess of pressure marked on the nameplate while running the compressor or checking the leakage of refrigerating system• Strictly forbid running the compressor with air, for the mixture of air and oil may explore due to great heat contracted in the discharge port. It will cause damages to the compressor• Completely open the suction and discharge valve before starting the compressor. It is very importance to open the discharge valve fully. If it is closed or partly closed, unacceptable high pressure and temperature will be produced inside the compressor• Be sure to comply with relevant safety regulations

Avoid electric shock:• Be sure to cut off power supply before operating• The compressor can only be used after being connected to earth

2. Nameplate sample

3. Settings of pressure switches:Attention: It is necessary to use a high pressure switch, the biggest cut out pressure should be below 30 bar(g). In order to protect the system as well as possible, the high pressure switch should possess the function of manual resetting whenever it is cut off. For all of the applications, the cut out set value of low pressure switch should not be lower than 0.1 bar(g). When setting the operating point of the low pressure switch, an accurate pressure gauge should be used because scales on the low pressure switch are for rough setting only. It is absolutely forbidden to run the compressor of YSF series in vacuum. Low pressure switch points must access to the connection port of low pressure switch on the compressor body.

Discharge Temperature Sensor

130Ø 237

Flange O.D.

516.

9

479.

9

435.

1

316.

811 30

278

106.

589

.378

80

Ø12.97 I.D.


Liquid Inlet


Liquid OutletØ 12.97 I.D.

116.

851

.8

21.3

Service Valve - Discharge7/8" I.D.

LP Switch Connection1/4" SAE

Oil Sight Glass3/4" NPT

Crankcase Heater3/8" NPT

Oil Drain1/4" NPT

Service Valve- Suction1 - 1/8" I.D.with Filter

13

4. Precaution of refrigerator oilDon’t mix up ester oil, mineral oil or alkyl benzene. The compressor has been filled with lubricant in advance before leaving the factory. Compressors with POE oil are available for R404A. The initial amount of oil is marked on the nameplate and the re-charge amount on the field site can be around 100 ml less than the initial one.

5. Installation5.1 ShipmentCheck packing lists which are attached to cases of each batch of goods carefully to make sure that both accessories and compressors are received. Invotech Company should be immediately informed of missing items in written form.

Standard configurations• Suction service valve and discharge service valve • Economizer (PHE)• Crankcase heater• Refrigerating oil filling, oil level sight glass• Electronic expansion valve• Electronic control board• Mounting kits

5.1.2 Packing All the compressors of YSF series are individually packed. Accessories may be installed on the compressors or be placed inside the cases. Packages need keeping dry all the time.

5.1.3 Mounting KitsAttention: In order to reduce vibration generated during starting and stopping cycle as much as possible, mounting kits should be used while installing the compressor. To maintain sufficient lubrication of moving parts, the compressor should be vertically installed.

5.2 Pipe welding and compressor installation5.2.1 Welding• While welding all the joints, be sure to protect the system by charging nitrogen for it can remove oxygen to prevent oxide skin inside the pipe wall.• Welding material which is recommended: any Cu-Ag alloy can be used, and it is best to contain 45 silver solder• Wrap the suction and discharge service valves with wet cloth before welding

5.2.2 Connection of the compressor

The liquid inlet of main line: connect to outlet of condenser The liquid outlet of main line: connect to entrance of expansion valve

In order to prevent impurities from invading into suction side of the compressors, Invotech specially installs the suction filter at the intake port of semi-hermetic scroll compressors of YSF series, so users must connect the low pressure switch to the connection port on the compressor body.

Ø 50

Mounting Kit

YSF Series


14

5.2.3 Pipe connectionCompressors of YSF series have significant features of low vibration, so the discharge pipe and the suction pipe do not need extra vibration absorber. The layout of suction pipe and discharge pipe should try to be close to the compressor as possible and parallel to the axis so that torsion generated from starting and stopping of the compressor can be absorbed. 5.2.4 LLSV (Liquid Line Solenoid Valve)LLSV contributes to separating liquid refrigerant to the low pressure side when the system is off. LLSV should be installed before the main expansion valve and try to approach it so that most of the liquid refrigerant can be reserved at the high pressure side. LLSV can prevent liquid migration on the off cycle. If the migration occurs during the off cycle, liquid is in the crankcase, when the compressor start next time, the explosion of the refrigerant out of the oil is a flood start. it is very dangerous to the compressor.

5.2.5 Insulation of liquid lineIn the system of YSF series compressors, the liquid after the economizer is sub-cooled, and the sub-cooling of the liquid contribute to improve refrigerating capacity and efficiency of the system. No matter what makes the temperature of liquid rise, it will lead to the loss of capacity and efficiency of the system. So the liquid pipe after the economizer (PHE) must be well insulated and there is no need insulating the liquid pipe before the economizer.

6. Casual loop diagram of compressors of YSF series

Condenser

Receiver

EvaporatorExpansive Valve

LLSV

Sight glass

Filter Drier

Discharge Line

Suction Line

Liquid line after the economizer(must be well insulated)

Included when delivery from factory

Economizer(PHE)

7. Electrical connection

7.1 Three-phase motorAll the compressors of YSF series are three-phase, which can be directly start.

7.2 Control boardAccording to various requirements of clients, Invotech Company develops two kinds of control boards --- standard type and enhanced type. The compressor whose configuration number ends with “-V100” is equipped with a standard type control board. This type controls EVI only and the wiring is simple. It never overlaps functions of control box which are usually applied to projects. The compressor whose configuration number ends with “-V200” is equipped with enhanced type control board. It includes control functions of both condensing unit and even the refrigerating system.

Main technical index:supply voltage: AC220V±10 ,50Hzoperating environment: temperature -10°C~50°C, humidity≤85%, no condensation, no corrosion contact outle capacity: 2A/250VAC (pure resistant load)thermal sensor: NTC R25=5kΩ, B(25/50)=3470K

YSF Series


15

7.2.1 Standard type control boardSuch type of control board is a dedicated one for EVI scroll compressors. It is used to detect temperatures and control the operation of both the compres-sor and electronic expansion valve.

Main function:Control of the compressor: Start and stop the compressor according to switch signal (passive switching mode contact, no power)

Crankcase heating tape:It works when the compressor stops and it ceases heating once the compressor works.

Control of electronic expansion valve:Both liquid injection and vapor injection modes are available

Warning of high discharge temperature:Give an alarm when discharge temperature goes out of the upper limit and cancel the alarm when the temperature is down and less than the lower limit. If the alarm takes place more than three times in one hour, the compressor will be locked.

Warning of liquid flood back:When the discharge temperature is lower than 45°C for and keep for more than 3 minutes, the control board will give an alarm of liquid flood back, but the compressor will keep running. When the discharge temperature is higher than 70°C, the alarm will stop.

Warning output:When the alarm appears, the control board will output a passive switch signal to warn.

The first start-up mode:When the compressor meets starting requirements, it should immedi-ately run for 3 seconds and then stop for 17 seconds; repeat for 3 times and then start the normal operation. Required condition: a. Reapply power after switching off. b. Although continuously powered, the compressor has been off for more than one hour; c. After the defrost.

Process of start-up:1. Apply power: check the signal of start/stop, if it is closed means under the start-up condition2. Under the start-up condition, delay for 3 minutes, then entry the first start-up mode, and then to start the compressor

Process of shutting down:Checking the signal of start- up and shutting down if it is open.

Remarks:1. T1, T2, T3 are Terminals of Compressor2. K1 is Contractor (by customer)3. Q1is Breaker (by customer)

Standard Control Board Wiring Sketch

N L LN

+ - A B

K1Q1

K1

CompressorMotor

Red

Blue

DTsensor

AfterEXV

sensor

AfterPHE

sensor

Start/stop

Free

Compressor

T1

T2

T3

EXV

EXV

Alarm

DC12V RS485

~M

ABC

N

YSF Series


Crankcaseheater

16

7.2.2 Enhanced type control boardEnhanced type of control board can control various functions of refrigerat-ing units with EVI. It is used to detect temperatures, and controls operations of the compressor, electronic expansion valve, LLSV, condenser fan speed, crankcase heater, air cooler and defrosting. External alarm ports are available, and phase sequence and current sensing circuit is also available, to protect compressor effectively.

Main functions:Control of the compressor: start and stop the compressor, delay between two starts

Control of crankcase heater:It is opposed to the start and stop logic of the compressor

Control of condenser fans:According to the condensing temperature to adjust the condensing fan’s running speed Control of air cooler:It synchronizes with the start and stop of the compressor

Control of defrosting:There are two kinds of defrosting modes can be chosen: electric heating and hot-gas defrosting.

Control of electronic expansion valve:Both liquid injection and vapor injection modes are available

Warning of high discharge temperature:Give an alarm when discharge temperature goes out of the upper limit and cancel the alarm when the temperature is down and lower than the lower limit. If the alarm takes place more than three times in one hour, the compressor will be locked.

Display and protection of compressors’ current:The compressor can display three-phase mean current and provide protective function of current overload and three-phase imbalance

Control of external alarm:Three external alarm ports are applied to protect high pressure, low pressure and oil level.

Protection of phase sequence:When the sequence of three-phase current is wrong, the control board will stop the compressor.

Warning output:When the alarm appears, the control board will output a passive switch signal to warn.

Enhanced type control board Wiring Sketch

N L L A B CN

CT A + -DC12V

A BRS485

B GNDC

Current Detection

Current Transformer

K1Q1

AB

C

CT

N

K1K2 K3

DT AfterEXV

AfterPHE

HP LP OilLevel

Free Defrost Start/stop

Free

T1

T2

T3

EXV

EXV

Ye Gr Re Bl

YSF Series


Red

Blue

Set

Con

dens

ing

Fan

Cra

nkca

se H

eate

r

Com

pres

sor

Air C

oole

r

Def

rost

Def

rost

SV

LLSV

Alar

m

CompressorMotor

~M

Remarks:1. T1, T2, T3 are Terminals of Compressor2. K1, K2, K3 are Contractor (by customer)3. CT is Current Transformer4. Q1is Breaker (by customer)

YSF_201503

Invotech Scroll TechnologiesNo. 68, Dongnan Road, Changshu, Jiangsu, PRC.

TEL +86 512 5290 5990

FAX +86 512 5290 5996

Email: [email protected]

www.invotech.cn

invotech ysf - refrimate.co.za

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