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32 - PVD3627-August 2011 

3.1.10. 

The motors fed by converters are subject to higher stresses than in case  of 
sinusoidal power supply. The combination of fast switching inverters with cables will 
cause over voltage due to the transmission line effects. The peak voltage is 
determined by the voltage supply, the length of the cables and the voltage rise time. 
As an example, with a rise time of 200 ns and a 30 m (100 ft) cable, the voltage at 
the motor terminals is twice the inverter voltage. 

Voltage withstand characteristics of MGV series  

The insulation system of the MGV  motors  is designed to withstand high repetitive 
pulse voltages and largely exceeds the recommendations of the IEC/TS 60034-25 ed 
2.0 2007-03-12 for motors without filters up to 480V AC.  
Higher supply voltages are available on request.  

 

Figure 1: Minimum Voltage withstands characteristics for motors insulations 
according to IEC standards. At the top are the minimum capabilities for the MGV 
motors with additional insulation. 
 
Note: The pulse rise times are defined in accordance with the IEC/TS 60034-17 
ed4.0 2006-05-09. 
 
The MGV motors can be used with a supply voltage up to 480 V under the following 
conditions: 

  The pulse rise times must be longer than 50 ns. 

  The repetitive pulse voltages must not exceed the values given in figure 1, 

Curve IEC 60034-25 : <500V AC. 

MOTOR PULSE WITHSTAND 

CHARACTERISTIC CURVES

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

2.2

2.4

2.6

0

0.2

0.4

0.6

0.8

1

1.2

Voltage Pulse Rise Time (µs)

P

eak V

o

lt

ag

e (

kV

)

Curve TM motors

Curve IEC 60034-25: <690V AC

Curve IEC 60034-25: <500V AC

Curve 60034-17: <500V AC

Curve MGV motors

 

Summary of Contents for MGV Series

Page 1: ...1 PVD 3627_GB_MGV August 2011 doc HIGH SPEED MOTORS MGV Series Technical Manual PVD 3627_GB...

Page 2: ...pliance with these standards requires high speed MGV motors to be mounted in accordance with the recommendations given in this user manual Equipment shall furthermore be mounted on a mechanical suppor...

Page 3: ...4 3 1 7 Motor characteristics and drive association 25 3 1 8 Further Data 29 3 1 9 Time constants of the motor 30 3 1 10 Voltage withstand characteristics of MGV series 32 3 2 DIMENSION DRAWINGS 33 3...

Page 4: ...ver 62 3 8 2 Cables and connectors associated to the resolver 63 3 8 3 Resolver setting 63 3 8 4 Sin Cos Encoder on request 63 4 COMMISSIONING AND USE 64 4 1 RECEPTION HANDLING STORAGE 64 4 1 1 Materi...

Page 5: ...r as well Parker s responsibility is limited to the MGV motors and doesn t encompass the whole user s system Data provided in this manual are for product description only and may not be guaranteed unl...

Page 6: ...e electrical panel is de energized voltages may be present for more than 3 minutes until the power capacitors have had time to discharge Use specified meter capable of measuring up to 1000V DC AC RMS...

Page 7: ...bearings encoder The water cooling increases the torque density and allows a silent operation These motors are taking advantage from the flux weakening principle that allows at the same time a high t...

Page 8: ...ives The MGV motors are supplied integrated and ready to be used Drawing 1 Assembly example of an MGV motor 2 2 1 MGV motors are successfully used on test benches for characterization control burning...

Page 9: ...5 C to 25 C Altitude Up to 1000m for higher altitude see Altitude derating Rated voltage 400 VAC or 480 VAC Connections External power cables standard length 1 2m PTC probe KTY84 130 sensor and encode...

Page 10: ...e Part Length Torque Speed characteristics See motor datas Feedback Sensor A Resolver K sin cos encoder Mounting arrangement B3 by feet B5 by flange Bearing design L Low speed common bearing H high sp...

Page 11: ...Parker technical department to know the exact values At low speed the torque derating is given by the following formula for an water Inlet temperature 25 C C C e temperatur Inlet C derating Torque 90...

Page 12: ...11 Illustration of the torque derating vs temperature at low speed for a MGV motor Torque Derating vs Inlet temperature 90 92 94 96 98 100 102 25 30 35 40 Inlet temperature C Torque derating Torque de...

Page 13: ...e motor during its duty cycle Let us consider the period of the cycle T s the successively samples of movements i characterized each ones by the maximal torque Mi Nm reached during the duration ti s S...

Page 14: ...in regarding the rms torque Mrms Selection of the motor rms speed is calculated thanks to the same formula as that used for the rms torque The mean speed can not used in general mean speed is equal to...

Page 15: ...angular speed of the motor rad s J Total inertia motor rotor inertia load inertia reflected to the motor kgm Mmotor equal to MS6 peak torque for a short acceleration deceleration time otherwise MS1 c...

Page 16: ...the resistant power Presistant as follows The power available for the acceleration is equal to Acceleration time t2 at constant Power from Base speed to Maximal speed t resis mot P P P tan So the esti...

Page 17: ...is solution of a nonlinear first order differential equation Mresistant 0 Procedure to follow e spindle in time on accelerati e t b c a t e axis in time on accelerati d a y t c b y Ln c t c a c b y y...

Page 18: ...c t c a c b y y y M M d M c braking P b J a x t c x x base t resis motor t resis motor mod _ _ mod _ _ 1 1 value negative 2 1 1 1 0 1 max 0 tan tan Deceleration time t2 at constant Power from Maximal...

Page 19: ...is M P Nm 52 4 6 4 58 tan t resis motor M M M Acceleration duration t1 at constant Torque from 0 to the Base speed s 0 599 4 52 02910 0 1079 1 M J t base Nm 64 4 6 4 58 tan t resis motor M M M Deceler...

Page 20: ...rst order differential equation Mresistant 0 s 1 455 9421 0275 0 63000 6 02910 0 69 45 mod _ mod _ s 0 599 4 52 02910 0 1079 0 0275 6 63000 2513 9421 1 6 1 1 1 45 69 6 9421 02910 0 9421 6 63000 1079 2...

Page 21: ...13013 01947 0 63000 6 0 02910 63 114 mod _ _ mod _ _ 0 487 64 4 0 02910 1079 0 01947 6 63000 1079 13013 1 6 1 1 1 63 114 6 13013 02910 0 13013 6 63000 2513 1079 2513 value negative Nm 64 4 6 4 58 6 va...

Page 22: ...0 5 1 0 1 5 2 0 2 5 Time s Speed rpm 0 10 20 30 40 50 60 70 Torque Nm Speed rpm Torque S1 Nm Resistant Torque Mr Nm Deceleration phase DECELERATION 0 5000 10000 15000 20000 25000 30000 0 0 0 5 1 0 1 5...

Page 23: ...current of the motor must be inferior to 0 8 times the peak current of the drive Icc_motor 0 8 x IS3_drive Please refer to the drive technical documentation Max back emf of the motor must be inferior...

Page 24: ...rent must be limited to the prescribed values If the nominal torque has to be maintained at stop or low speed 3 rpm imperatively limit the current to 80 of I0 permanent current at low speed in order t...

Page 25: ...00 4500 24000 X life 72 6 113 0 MGV840CAF DRIVE 94 151 400 44 44 66 100 6370 24000 X life 93 8 151 0 MGV840CAD DRIVE 123 227 400 63 63 58 100 10300 24000 X life 123 0 227 0 MGV930CAT DRIVE 27 48 400 1...

Page 26: ...life MGV820CAP DIGIVEX 100 120 16 16 28 0 42 0 5500 24000 X life MGV840CAR DIGIVEX 50 80 10 10 68 0 97 4 1410 24000 X life MGV840CAP DIGIVEX 100 120 16 16 68 0 100 0 2250 24000 X life MGV840CAH DIGIVE...

Page 27: ...0 68 0 4500 9011 Steel MGV840CAF 890SD 432870E 44 44 63 3 63 3 6639 12028 Steel MGV840CAD 890SD 433145F 63 63 58 0 63 0 10300 16000 Hybrid MGV930CAT 890SD 532300C 10 10 114 9 114 9 830 1753 Steel MGV...

Page 28: ...3627 August 2011 3 1 7 4 Illustration of tables Speed in rpm Torque in N m Constant torque Constant power Base speed Nb Field weakening Peak Torque S6 at Low speed Mo S6 Permanent Torque S1 at Low spe...

Page 29: ...2 4 100 113 00 15 40 12 8 6 32 4 MGV840AH 0 209 0 0186 2 4 100 56 60 3 84 3 2 6 65 0 MGV840CAF 0 117 0 0186 2 4 100 42 40 2 16 1 8 6 86 6 MGV840AD 0 0522 0 0186 2 4 100 28 30 0 96 0 8 6 130 0 MGV930C...

Page 30: ..._ _ _ _ _ ph ph ph ph ph ph n ph n ph mech Ke Ke J R Ke Kt J R 2 _ _ 5 0 ph ph ph ph mech Ke J R With following values obtained from the motor data sheet Rph_ph resistance of the motor phase to phase...

Page 31: ...opper copper iron copper therm Cth Rth _ 389 K kg J Kg copper K J copper Mass Cth With Rthcopper_iron thermal resistance between copper and iron K W Cthcopper thermal capacity of the copper J K Massco...

Page 32: ...2007 03 12 for motors without filters up to 480V AC Higher supply voltages are available on request Figure 1 Minimum Voltage withstands characteristics for motors insulations according to IEC standar...

Page 33: ...4 30 MGV430 376 225 150 125 150 80 50 24 33 MGV620 384 215 160 140 170 90 58 32 41 MGV635 444 275 160 140 170 90 58 32 50 MGV820 451 254 220 190 217 112 80 38 80 MGV840 531 334 220 190 217 112 80 38 1...

Page 34: ...34 PVD3627 August 2011 3 2 2 Motor outline drawings MGV420 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 35: ...35 PVD3627 August 2011 MGV430 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 36: ...36 PVD3627 August 2011 MGV620 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 37: ...37 PVD3627 August 2011 MGV635 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 38: ...38 PVD3627 August 2011 MGV820 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 39: ...39 PVD3627 August 2011 MGV840 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 40: ...40 PVD3627 August 2011 MGV930 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 41: ...41 PVD3627 August 2011 MGV950 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 42: ...42 PVD3627 August 2011...

Page 43: ...43 PVD3627 August 2011 MGVA30 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 44: ...44 PVD3627 August 2011 MGVA50 outline Resolver connector Power and temperature sensor cables output Water inlet outlet G1 4 M8 for eyes bolt...

Page 45: ...d on the shaft even if this weight generates a force lower than the maximum force allowed on the shaft Indeed this weight can reduced the shaft resonance frequency and leads to its failure The load mu...

Page 46: ...to resonance The high speed motors need a rigid support machined and of good quality The maximum flatness of the support has to be lower than 0 05mm To align easily the motor and the load we recommen...

Page 47: ...to account motor load load s bearings coupling speed acceleration balancing alignment The coupling supplier can help to define the best coupling Warning Thermal expansion can also generate strain and...

Page 48: ...gs Moreover it is highly recommended to implement bearings temperature monitoring This control can detect temperature evolution that is the first sign of the end life bearings Threaded holes can be pr...

Page 49: ...earings ceramic balls with rings made with high performance iron Max possible speed tab depending on bearing type STEEL STRAIGHT BEARINGS HYBRID BEARINGS X LIFE BEARINGS Motor Max speed Radial Axial M...

Page 50: ...red to avoid any damage Caution When motor is not running the cooling system has to be stopped 10 minutes after the motor shut down to avoid condensation Caution Condensation and risk of rust may occu...

Page 51: ...FOCOR or GLYSANTIN G48 correctly used have demonstrated their ability to prevent corrosion in a closed cooling circuit For example Glysantin G48 recommendations are Water hardness 0 to 20 dH 0 3 6 mmo...

Page 52: ...W C C MGV420 2 0 114 0 75 25 31 MGV430 3 0 328 1 1 25 31 MGV620 3 0 064 1 2 25 31 MGV635 5 0 231 1 8 25 31 MGV820 5 0 163 1 7 25 31 MGV840 10 1 002 5 25 32 MGV930 10 0 390 4 25 31 MGV950 16 1 464 6 4...

Page 53: ...5 9 47 7 50 0 52 9 56 0 50 51 0 53 0 55 6 58 8 62 2 55 56 1 58 3 61 2 64 7 68 4 60 61 2 63 5 66 7 70 5 74 7 65 66 4 68 8 72 3 76 4 80 9 70 71 5 74 1 77 8 82 3 87 1 75 76 6 79 4 83 4 88 2 93 3 80 81 7...

Page 54: ...ter as coolant J kg K Cp depends on the glycol concentration please see below We have considered an average temperature of the coolant of 30 C Thermal specific capacity Cp according to glycol concentr...

Page 55: ...to prevent its obstruction This section shows typical water cooling diagram Recommendations Check inlet temperature Pump Spindle servomotors Water flow regulators Water flow meter Water flow meter Chi...

Page 56: ...56 PVD3627 August 2011 To other s device s Chiller or Exchanger Pump Spindle servomotor No Parallel Circuit without flow control Pump Spindle servomotors No Serial Circuit...

Page 57: ...ng trip the electronic system at 150 5 C When the rated tripping temperature is reached the PTC thermistor resistance changes very quickly This resistance can be monitored by the drive to protect the...

Page 58: ...uired temperature limits for alarm and tripping can be set in the drive Temperature measurement with KTY sensors The graph below shows the KTY sensor resistance as a function of temperature for a curr...

Page 59: ...endations please refer to the drive technical documentation for any further information Cable selection At standstill the current must be limited at 80 of the low speed current Io And the cable has to...

Page 60: ...le 113 Arms Cable section selection 70mm You also have to respect the Drive commissioning manual and the cables current densities or voltage specifications 3 7 2 Awg Conversion Awg kcmil mm kcmil mm 5...

Page 61: ...o check ground continuity between frame and ground wire For the safety you need to connect stator to the ground 3 7 5 The electrical connection on MGV motor is realized by high performance cable The m...

Page 62: ...7 Vrms 7 Vrms Feeding current at 8 KHz 70mA maximum 70mA maximum Precision under 7Vrms at 8KHz 6 10 Transformation ratio 0 425 mini 0 55 maxi 0 425 mini 0 55 maxi Input DC resistance supply transform...

Page 63: ...le to rotate freely The maximum friction torque on the rotor must not exceed 1 of the motor permanent torque The cooling circuit has to be in use The operator must be able to reach the resolver stator...

Page 64: ...for handling operations Never use cables connectors input output of cooling circuit or any other inappropriate lifting device The picture hereunder shows the correct way for handling the high speed mo...

Page 65: ...alues are valid for both motor s feet and flange bolting Screw diameter Tightening torque Screw diameter Tightening torque M2 x 0 35 0 35 N m M9 x 1 25 31 N m M2 5 x 0 4 0 6 N m M10 x 1 5 40 N m M3 x...

Page 66: ...the motor can reach or exceed 100 C 4 2 3 The operational life of High speed motor bearings largely depends on the care and attention given to this operation Mechanical assembly Carefully check the al...

Page 67: ...o misalignments taking into account the coupling stiffness must not exceed the specified values given for the motor see 3 4 Bearings Attention Variations in temperature generate strain and load due to...

Page 68: ...maxi bearing force capacity cannot be supported by motor bearings balancing default generates centrifugal force and vibration as a result is breakdown shaft The load must be supported by bearings For...

Page 69: ...motor is fixed on its frame and linked with the driven load it is highly recommended to check complete shaft line balancing to minimize vibrations Shaft line balancing and vibration control Moreover...

Page 70: ...anger After 15 days check all tightening torques on cable connection Bad connections can lead to overheating and fire Please read 3 7 Electrical connection to have information about cable recommendati...

Page 71: ...VDC max is 50 M Between phase wire and housing Between thermal protector and housing Between resolver winding and housing You find that the motor is drifting Adjust the servo amplifier offset You noti...

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