Post on 02-Jun-2022
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
Evaporating Temperature(°C)
-45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15
20°C Return Gas Temperature, No Sub Cooling
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
Evaporating Temperature(°C)
-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
Evaporating Temperature(°C)
-45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15
20°C Return Gas Temperature, No Sub Cooling
20°C Return Gas Temperature, No Sub Cooling
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
Capacity @ 20°C Return Gas Temperature, No Sub Cooling
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
Capacity @ 20°C Return Gas Temperature, No Sub Cooling
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
Capacity @ 20°C Return Gas Temperature, No Sub Cooling
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.
Temperature Sensor after PHE
Discharge Temperature SensorLiquid Inlet
Temperature Sensor after EXV
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.
Temperature Sensor after PHE
Liquid Inlet
Temperature Sensor after EXV
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
Application Instruction
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
Application Instruction
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
Application Instruction
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
Application Instruction
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: scroll@invotech.cn
www.invotech.cn