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25°C

amb

25°C (77°F)

amb

Winding resistance

Winding resistance is the resistance between phases at 25°C (77°F) (resistance value +/- 7%). Winding resistance is

generally low and it requires adapted tools for precise measurement. Use a digital ohm-meter, a “4 wires” method

and measure under stabilised ambient temperature. Winding resistance varies strongly with winding temperature. If

the compressor is stabilised at a different value than 25°C (77°F), the measured resistance must be corrected using

the following formula:

tamb

= R

25°C (77°F)

a + t

amb

a + t

25°C (77°F)

reference temperature = 25°C (77°F)

temperature during measurement °C (°F)

winding resistance at 25°C (77°F)

winding resistance at tamb

Coefficient a = 234.5

Motor protection

DSF090 to DSF200

Compressor models DSF090 to 200 are provided with internal overload motor protection to prevent against

excessive current and temperature caused by overloading, low refrigerant flow or phase loss.

The protector is located in star point of motor and, should it be activated, will cut out all three phases. It will be reset

automatically.

While not compulsory, an additional thermal magnetic motor circuit breaker is still advisable for either alarm or

manual reset.

Then it must be set at max operating current:

• When the motor temperature is too high, then the internal protector will trip.

• When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection

therefore offering possibility of manual reset.

DSF270 to DSF530

DSF compressors are delivered with a pre-installed motor protection module inside the terminal box. This device

provides efficient and reliable protection against overheating and overloading as well as phase loss/reversal.

The motor protector comprises a control module and PTC sensors embedded in the motor winding.

The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 . If any

thermistor exceeds its response temperature, its resistance increases above the trip level (4.500 Ω) and the output

relay then trips – i.e. contacts M1-M2 are open. After cooling to below the response temperature (resistance < 2.750

Ω), a 5-minute time delay is activated.

After this delay has elapsed, the relay is once again pulled in – i.e. contacts M1-M2 are closed. The time delay may be

cancelled by means of resetting the mains (L-N -disconnect) for approximately 5 sec.

A red/green twin LED is visible on the module. A solid green LED denotes a fault free condition. A blinking red LED

indicates an identifiable fault condition:

Scroll compressors, DSF090 to DSF530 | Electrical connections

AB309735209512en-000603 | 38

Содержание DSF090

Страница 1: ...www danfoss com Application Guide Scroll compressors DSF090 to DSF530 Single and manifold 50 60 Hz R32...

Страница 2: ...ent directive 2014 68 EU 10 Internal free volume 10 Refrigerants 11 General information 11 R32 11 Technical specification 12 50 60 Hz data Single compressor 12 Performance data 13 R32 50 60 Hz Single...

Страница 3: ...Power supply and electrical protection 49 Control logic 52 Reduce moisture in the system 53 Assembly line procedure 54 Commissioning 57 Dismantle and disposal 58 Packaging 59 Single pack 59 Industrial...

Страница 4: ...vers and T block connectors 64 Acoustic hoods 64 Miscellaneous 64 Tandem kits 65 Trio kits 65 Online support 66 Scroll compressors DSF090 to DSF530 Contents Danfoss Climate Solutions 2023 06 AB3097352...

Страница 5: ...s icon indicates instructions to avoid reliability risk The purpose of this guideline is to help customers qualify compressors in the unit You are strongly advise to follow these instructions For any...

Страница 6: ...ove behavior under poor lubrication conditions Patented motor cap for optimal motor cooling and higher resistance to liquid slugging Organ pipe masters oil circulation in manifold configuration Introd...

Страница 7: ...ion in manifold configuration Cut away DSF 270 530 Figure 2 Cut Away DSF 270 530 How do IDVs work Figure 3 Intermediate Discharge Valve IDV Danfoss Intermediate Discharge Valves IDVs are located close...

Страница 8: ...d in tandem or trio combinations The example below presents the compressor nomenclature which equals the technical reference as shown on the compressor nameplate Code numbers for ordering are listed i...

Страница 9: ...11 1991 2011 B February B 1992 2012 C March C 1993 2013 D April D Wuqing China 25 1994 2014 E May E 1995 2015 F June F 1996 2016 G July G 1997 2017 H August H 1998 2018 J September J 1999 2019 K Octob...

Страница 10: ...nt directive 2014 68 EU Products DSF090 200 DSF270 325 DSF485 530 Refrigerant fluids Group 1 Group 1 Group 1 Category PED III III IV Maximum Minimum temperature Low side Ts 35 C Ts 53 C 31 F Ts 127 F...

Страница 11: ...gerant cost Refrigerant availability R32 R32 is a pure HFC refrigerant with a zero Ozone Depletion Potential ODP 0 and a low Global Warming Potential GWP 677 AR5 675 AR4 R32 leads to higher discharge...

Страница 12: ...51 7 9 26 26 4 932 31 9 1127 3 3 113 69 152 DSF200 170 3 10 39 29 6 1045 35 8 1264 3 6 123 71 5 158 DSF270 227 6 13 89 39 6 1398 47 8 1688 6 1 206 114 251 DSF325 276 2 16 85 48 1 1699 58 0 2048 6 1 20...

Страница 13: ...533311 45 6 3 43 11 70 NOTE TR Ton of Refrigeration COP Coefficient Of Performance EER Energy Efficiency Ratio Standard rating conditions for 50Hz Evaporating temperature 5 C 41 F Condensing temperat...

Страница 14: ...90 74 4 77 4 Body 120Z0490 Top 120Z0493 DSF100 76 4 79 4 Body 120Z0490 Top 120Z0493 DSF115 175 78 4 81 5 Body 120Z0491 Top 120Z0493 DSF200 80 5 83 6 Body 120Z0492 Top 120Z0493 DSF270 83 4 86 4 120Z076...

Страница 15: ...090 to DSF200 and 154um peak to peak for DSF270 to DSF530 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon A high v...

Страница 16: ...5 60 65 70 41 0 32 50 59 68 77 86 95 104 113 122 131 140 149 158 30 35 25 20 15 10 5 0 5 10 15 20 25 30 22 31 13 4 5 14 23 32 41 50 59 68 77 86 S H 5 K 9 F CC 000182 S H 10 K 18 F Figure 6 Operating e...

Страница 17: ...g 44 4 psig 645 Minimum low pressure safety switch setting bar g 1 5 psig 22 Minimum low pressure pump down switch setting bar g 1 5 bar below nominal evap pressure with minimum of 1 7 bar g psig 22...

Страница 18: ...180 7 09 230 9 06 230 9 06 8560177 DSF115 175 3 243 9 57 542 21 34 278 10 94 509 20 04 201 7 91 230 9 06 230 9 06 8560246 DSF200 3 7 9 243 9 57 558 21 97 299 11 77 524 20 63 201 7 91 230 9 06 230 9 0...

Страница 19: ...24 240 9 45 242 9 53 1 8560189 DSF275U 4 7 9 DSF100 DSF175 850 33 46 386 15 2 565 22 24 240 9 45 242 9 53 1 8560189 DSF275U 3 DSF100 DSF175 850 33 46 428 16 85 565 22 24 240 9 45 242 9 53 1 8560189 D...

Страница 20: ...F325 903 35 55 533 20 98 731 28 78 359 14 13 211 8 31 5 8560169 DSF525X 3 4 7 9 DSF200 DSF325 903 35 55 533 20 98 731 28 78 359 14 13 211 8 31 5 8560170 DSF540E 3 4 7 9 DSF270 DSF270 1025 40 35 527 20...

Страница 21: ...0171 DSF 600T 4 3 x DSF200 1236 48 7 404 15 8 587 23 1 205 8 1 242 9 5 6 8560171 1326 52 2 404 15 8 587 23 1 622 24 5 242 9 5 7 8560171 DSF810T 3 4 7 9 DSF270 DSF270 DSF270 1467 57 76 543 21 38 701 27...

Страница 22: ...g a Schrader valve Outline drawing 1 1 2 2 Design compressor mounting General requirements Compressors used in single applications must be mounted with flexible grommets Compressors used in parallel a...

Страница 23: ...cessory including flexible grommets is necessary kit 8156138 The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established The required bolt size f...

Страница 24: ...5U 300U 315U 331U 355U 375U mounting The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails The rigid mounting spacers are i...

Страница 25: ...uirements DSF465T 525T 600T mounting The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails The rigid mounting spacers and r...

Страница 26: ...Figure 30 DSF540E to DSF1590T mounting Design piping General requirements Proper piping practices should be employed to Ensure adequate oil return even under minimum load conditions refrigerant speed...

Страница 27: ...tween the compressors by gravity This is ensured by a precise suction and oil equalization piping design The discharge line has no impact on oil balancing It is shown with tee to indicate that both le...

Страница 28: ...he compressor order No 1 No 2 is defined counting from left to right placed on the side facing the electrical boxes of the compressors see example below on a trio Trio models with Right suction Trio m...

Страница 29: ...4 Right 24 mm 0 94 inch Cp1 DSF350E DSF175 DSF175 1 5 8 1 3 8 1 1 8 8560145 Left Not needed 120Z0634 Right DSF355U DSF155 DSF200 1 5 8 1 3 8 1 1 8 8560167 Left 25 mm 0 98 inch Cp1 120Z0694 Right 25 mm...

Страница 30: ...SF325 2 5 8 1 5 8 1 5 8 8556217 Left 30 mm 1 18 inch Cp3 120Z0784 Right 34 5 mm 1 36 inch Cp1 Cp3 120Z0794 DSF1180T DSF325 DSF325 DSF530 2 5 8 2 1 8 1 5 8 8556310 Left 120Z0790 Right 29 mm 1 14 Cp1 Cp...

Страница 31: ...alization port To connect the equalization line on rotolock connections the organ pipe adaptor sleeves Teflon gaskets included in the tandem accessory kit must be used Organ pipe Tightening torque 100...

Страница 32: ...htening torque 145 Nm Supplied with the compressor Included in tandem kit Figure 38 DSF270 DSF530 Scroll compressors DSF090 to DSF530 Mechanical connections Danfoss Climate Solutions 2023 06 AB3097352...

Страница 33: ...on electrical box s knockouts to against accidental contact with electrical parts inside DSF090 200 except DSF155 175 code3 DSF200 code3 7 9 The terminal box is provided with a 25 5mm 1 inch ISO25 and...

Страница 34: ...ers knockouts are as follows 22 5 mm 0 89 inch PG16 UL 1 2 16 5 mm 0 65 inch ISO16 x2 20 7 mm 0 81 inch ISO20 or PG13 5 x2 Figure 41 Wiring connections for DSF270 325 485 530 DSF485 and DSF530 code 3...

Страница 35: ...size Faston type Figure 43 Motor protection module Electrical specifications Motor voltage Danfoss scroll compressors DSF are available in motor voltage listed below Table 18 Motor voltage Frequency M...

Страница 36: ...avoid that the temperature around the compressor and in the terminal box would rise too much A ventilation installation on the enclosure panels may be necessary If not the electronic protection module...

Страница 37: ...57 DSF200 239 37 39 0 57 DSF270 276 43 53 0 42 DSF325 317 52 65 0 36 DSF485 479 76 96 0 29 DSF530 479 83 104 0 29 LRA Locked Rotor Amp Locked Rotor Amp value is the higher average current as measured...

Страница 38: ...erating current When the motor temperature is too high then the internal protector will trip When the current is too high the thermal magnetic motor circuit breaker will trip before the internal prote...

Страница 39: ...structive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings Reverse rotation will be obvious to the user as s...

Страница 40: ...500 ms 500 ms Approximate The lockout may be cancelled by resetting the power mains disconnect L N for approximately 5 seconds For more detailed information see Instructions for electronic module AN16...

Страница 41: ...system perform test in both heating and cooling mode Oil level must be visible or full in the sight glass when the compressors are running and when all compres sors of the circuit are stopped Top up w...

Страница 42: ...lutions to change natural frequencies are to work on structure stiffness and mass brackets metal sheet thickness or shape Manage operating envelope The Operating envelope data for DSF scroll compresso...

Страница 43: ...tion beyond the application envelope No DGT protection required DSF090 to DSF200 have no integrated discharge temperature protection an external protection is required This external protection device...

Страница 44: ...ntrol logic CC 000192 Manage superheat During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor...

Страница 45: ...all not be more than 60 sec per hour below the safe limit defined in the Dilu tion Chart see graph below Check defrost logic In re versible systems the de frost logic can be worked out to limit liquid...

Страница 46: ...K Oil Superheat F CC 000185 Dilution Chart DSF270 to DSF570 R32 Figure 53 Dilution Chart reference at 20 C 68 F ambient temperature 15 12 5 10 7 5 5 25 30 20 15 10 5 0 5 10 15 20 25 13 22 4 5 14 23 32...

Страница 47: ...harge limit ABOVE charge limit All Ensure tightness between condenser evaporator when system is OFF Thermostatic expansion Valve TXV Liquid Line Solenoid Valve LLSV strongly recommended Electronic exp...

Страница 48: ...he compressor Pump down must be set higher than 1 7 bar g 25 psig For more details on pump down cycle see Pump down logic recommendations in section Control logic Charge limits Table 30 Charge limits...

Страница 49: ...30 DSF325 34 75 DSF1590T 3 DSF530 34 75 Power supply and electrical protection Wiring information Requirements Protect the compressor from short circuit and overcurrent by a thermal magnetic motor cir...

Страница 50: ...KM CB Ph L1 L1 L3 L2 L3 L2 T1 T3 T2 KM SSH LPS Ph Figure 57 Compressor model DSF270 325 MPM S CC SS LPS KM CB F1 F1 HP L1 L3 L2 KM T2 M T1 T3 DGT UC CCH CC 0041 Scroll compressors DSF090 to DSF530 Ap...

Страница 51: ...ction Module Thermistor chain motor and discharge tem perature Seprate supply Surface sump heater Soft starts Soft starters are designed to reduce the starting current of 3 phase AC motors Soft starte...

Страница 52: ...imultaneously during 2 minutes every hour in order to boost oil return Time and delay can be fine tuned by oil return test No 1 in section Manage oil in the circuit During oil boost pay special attent...

Страница 53: ...and tests described in sections Manage superheat and Operating envelope data Pump down logic recommendations Pump down is initiated prior to shutting down the last compressor on the circuit by de ene...

Страница 54: ...holding charge between 0 3 bar 4 psi and 0 7 bar 10 psi and is sealed with elastomer plugs Respect the following sequence to avoid discharge check valve gets stuck in open position Remove the suction...

Страница 55: ...ste or flux coated brazing rod Use brazing rod with a minimum of 5 silver content It is recommended to use double tipped torch using acetylene to ensure a uniform heating of connection For discharge c...

Страница 56: ...ar 537 psi 53 6 bar g 777 psig HP LP 37 bar 537 psi Maximum compressor test pressure low side LP 36 7 bar g 533 psig LP HP 5 bar 73 psi Maximum speed 4 8 bar s 70 psi s 34 3 bar g 497 psig LP HP 5 bar...

Страница 57: ...ings do not indicate a faulty compressor To prevent this the system can be first operated briefly to distribute refrigerant Do not use a megohm meter nor apply power to the compressor while it is unde...

Страница 58: ...POE oil 185SL from new cans For more detailed information see Lubricants filling in instructions for Danfoss Commercial Compressors AP000086435866 Dismantle and disposal Danfoss recommends that compr...

Страница 59: ...rial pack Compressor model Nbr 1 Length Width Height Gross weight Static stack ing pallets mm inch mm inch mm inch kg lbs DSF090 8 1150 45 3 950 37 4 680 26 8 494 1089 2 DSF100 8 1150 45 3 950 37 4 68...

Страница 60: ...84 120H1475 120H1882 120H1880 DSF175 Brazed Internal 120H1878 120H1477 120H1876 120H1874 DSF200 Brazed Internal 120H1872 120H1479 120H1870 120H1868 DSF270 Brazed Module 24 V AC 1 120H1611 120H1422 120...

Страница 61: ...3 DSF200 Brazed Internal 120H1871 120H1478 120H1869 120H1867 DSF270 Brazed Module 24 V AC 1 120H1610 120H1423 Brazed Module 110 240 V 1 120H1608 120H1425 120H1620 DSF325 Brazed Module 24 V AC 1 120H16...

Страница 62: ...s with 2 1 4 rotolock connection Multipack 10 Rotolock nut Table 42 Rotolock nut Code no Description Application Packaging Pack size 8153124 Rotolock nut 1 3 4 Models with 1 3 4 rotolock connection Mu...

Страница 63: ...crankcase heater 75W 230V CE UL DSF270 530 Industry pack 50 7773118 Belt type crankcase heater 75W 400V CE UL DSF270 530 Multipack 6 120Z0464 Belt type crankcase heater 75W 460 V CE UL DSF270 530 Mult...

Страница 64: ...k connector 80x80 mm DSF270 530 Multipack 10 Acoustic hoods Table 48 Acoustic hoods Code no Description Application Packaging Pack Size 120Z0768 Acoustic hood DSF large scroll DSF270 530 Single pack 1...

Страница 65: ...em solid OEL 1 3 8 DSF540E 650E Single pack 1 120Z0796 Kit tandem solid washer 31mm OEL 1 3 8 DSF595U Single pack 1 Trio kits Table 51 Trio kits Code no Description Application Packaging Pack Size 120...

Страница 66: ...er understand the products applications industry topics and trends that will help you do your job better Create your Danfoss Learning account for free at www danfoss com en service and support learnin...

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