Parker MGV Series User manual

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PVD 3661 MGV_ commisionning manual_March 2012.docx
HIGH SPEED MOTORS
MGV Series
Commisionning Manual
PVD 3661_GB

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PVD 3661 MGV_ commisionning manual_March 2012.docx
Compliance with « CE » directives
The high speed MGV motors Seriescomplies with the Directive 2006/95/CE and also meets the
Standard IEC 60034-1.
Compliance 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 support that conducts heat effectively
and does not exceed 40°C.
Parker
8, avenue du Lac – BP30749
F-21007 DIJON CEDEX
Tel : [phone]
Fax : [phone]
www.parker.com

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PVD 3661 MGV_ commisionning manual_March 2012.docx
Table of Content
1. INTRODUCTION..................................................................................................................................................5
1.1. PURPOSE AND INTENDED AUDIENCE................................................................................................................5
1.2. SAFETY.........................................................................................................................................................5
1.2.1. Principle..............................................................................................................................................5
1.2.2. General Safety Rules..........................................................................................................................5
2. PRODUCT DESCRIPTION..................................................................................................................................7
2.1. OVERVIEW.....................................................................................................................................................7
2.2. MOTOR DESCRIPTION AND APPLICATIONS .......................................................................................................7
2.3. GENERAL TECHNICAL DATA.............................................................................................................................8
2.4. PRODUCT CODE ............................................................................................................................................9
3. TECHNICAL DATA ...........................................................................................................................................10
3.1. MOTOR SELECTION......................................................................................................................................10
3.1.1. Altitude derating................................................................................................................................10
3.1.2. Temperature derating.......................................................................................................................10
3.1.3. Thermal equivalent torque (rms torque) ...........................................................................................11
3.1.4. Acceleration – Deceleration time with MGV motors.........................................................................11
3.1.5. Drive selection..................................................................................................................................11
3.1.6. Current limitation at stall conditions (i.e. speed < 3 rpm) .................................................................12
3.1.7. Peak current limitations ....................................................................................................................12
3.2. MOTOR CHARACTERISTICS AND DRIVE ASSOCIATION......................................................................................13
3.2.1. Intrinsic characteristics .....................................................................................................................13
3.2.2. DIGIVEX Drive Association ..............................................................................................................13
3.2.3. AC890 Drive Association..................................................................................................................14
3.2.4. Illustration of tables...........................................................................................................................14
3.2.5. Further Data......................................................................................................................................15
3.2.6. Time constants of the motor.............................................................................................................15
3.2.7. Voltage withstand characteristics of MGV series .............................................................................15
3.3. DIMENSION DRAWINGS.................................................................................................................................15
3.4. MOTOR MOUNTING.......................................................................................................................................16
3.4.1. Motor mounting.................................................................................................................................16
3.4.2. Typical mounting...............................................................................................................................16
3.4.3. Frame recommendation....................................................................................................................17
3.4.4. Motor alignment................................................................................................................................17
3.4.5. Coupling............................................................................................................................................18
3.4.6. Pulley/belt .........................................................................................................................................18
3.4.7. Vibration and bearings temperature control .....................................................................................19
3.4.8. Vibration resistance to shaft end ......................................................................................................19
3.5. BEARINGS ...................................................................................................................................................20
3.6. COOLING.....................................................................................................................................................21
3.6.1. General recommendations ...............................................................................................................21
3.6.2. Additives for water as cooling media................................................................................................22
3.6.3. Motor cooling circuit data and chiller selection.................................................................................23
3.6.4. Flow derating according to glycol concentration ..............................................................................24
3.6.5. Water cooling diagram......................................................................................................................25
3.7. THERMAL PROTECTION................................................................................................................................27
3.7.1. Alarm tripping with PTC thermistors :...............................................................................................27
3.7.2. Temperature measurement with KTY sensors:................................................................................28
3.8. POWER ELECTRICAL CONNECTION ................................................................................................................28

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PVD 3661 MGV_ commisionning manual_March 2012.docx
3.8.1. Wires sizes .......................................................................................................................................28
3.8.2. Conversion Awg/kcmil/mm²:.............................................................................................................30
3.8.3. Motor cable length............................................................................................................................30
3.8.4. Ground connection ...........................................................................................................................30
3.8.5. Motor cable.......................................................................................................................................31
3.9. FEEDBACK SYSTEM......................................................................................................................................31
3.9.1. Resolver............................................................................................................................................31
3.9.2. Cables and connectors associated to the resolver...........................................................................32
3.9.3. Resolver setting................................................................................................................................32
3.9.4. Sin-Cos Encoder (on request)..........................................................................................................32
4. COMMISSIONING, USE AND MAINTENANCE...............................................................................................32
4.1. RECEPTION,HANDLING,STORAGE ................................................................................................................32
4.1.1. Equipment delivery ...........................................................................................................................32
4.1.2. Handling............................................................................................................................................32
4.1.3. Storage .............................................................................................................................................33
4.2. INSTALLATION..............................................................................................................................................33
4.2.1. Mounting...........................................................................................................................................33
4.2.2. Preparation .......................................................................................................................................34
4.2.3. Mechanical assembly .......................................................................................................................34
4.2.4. Alignment..........................................................................................................................................35
4.2.5. Motor startup.....................................................................................................................................36
4.2.6. Shaft line balancing and vibration control.........................................................................................37
4.3. ELECTRICAL CONNECTION............................................................................................................................37
4.4. MAINTENANCE OPERATIONS.........................................................................................................................38
4.5. TROUBLESHOOTING.....................................................................................................................................39

5 - PVD 3661 MGV_ Commisionning Manual_March 2012.Docx
1. INTRODUCTION
1.1. Purpose and intended audience
This manual contains information that must be observed to install, operate and maintain PARKER MGV high speed
motors.
Installation, operation and maintenance of the equipment should be carried out by qualified personnel. A qualified
person is someone who is technically competent and familiar with all safety information and established safety
practices; with the installation process, operation and maintenance of this equipment; and with all the hazards
involved.
Reading and understanding the information described in this document is mandatory before carrying out any
operation on the motors. If any malfunction or technical problem occurs, that has not been dealt with in this manual,
please contact PARKER for technical assistance. In case of missing information or doubts regarding the installation
procedures, safety instructions or any other issue tackled in this manual, please contact PARKER as well.
PARKER’s responsibility is limited to its torque motors and does not encompass the whole user’s system. Data
provided in this manual are for product description only and may not be guaranteed, unless expressly mentioned in
a contract.
DANGER: PARKER declines responsibility for any industrial accident or material damage
that may arise, if the procedures and safety instructions described in this manual are not
scrupulously followed.
1.2. Safety
1.2.1.
To operate safely, this equipment must be transported, stored, handled, installed and serviced correctly. Following
the safety instructions described in each section of this document is mandatory. Torque Motors usage must also
comply with all applicable standards, national directives and factory instructions in force.
Principle
DANGER:
1.2.2.
Non-compliance with safety instructions, legal and technical regulations in force
may lead to physical injuries or death, as well as damages to the property and the
environment.
General Safety Rules
Generality
DANGER:
The qualified personnel must know the safety (C18510 authorization, standard VDE 0105 or
IEC 0364) and local regulations.
The installation, commission and operation must be performed by qualified
personnel, in conjunction with this documentation.
They must be authorized to install, commission and operate in accordance with established
practices and standards.

6 - PVD 3661 MGV_ Commisionning Manual_March 2012.Docx
Electrical hazard
Servo drives may contain non-insulated live AC or DC components. Respect the drives
commissioning manual. Users are advised to guard against access to live parts before
installing the equipment.
Some parts of the motor or installation elements can be subjected to dangerous voltages,
when the motor is driven by the inverter , when the motor rotor is manually rotated, when
the motor is driven by its load, when the motor is at standstill or stopped.
For measurements use only a meter to IEC 61010 (CAT III or higher). Always begin using
the highest range. CAT I and CAT II meters must not be used on this product.
Allow at least 5 minutes for the drive's capacitors to discharge to safe voltage levels (<50V).
Use the specified meter capable of measuring up to 1000V dc & ac rms to confirm that less
than 50V is present between all power terminals and between power terminals and earth.
Check the drive recommendations.
The motor must be permanently connected to an appropriate safety earth.
To prevent any accidental contact with live components, it is necessary to check that cables
are not damaged, stripped or not in contact with a rotating part of the machine. The work
place must be clean, dry.
General recommendations :
- Check the wiring circuit
- Lock the electrical cabinets
- Use standardized equipment
Mechanical hazard
Servomotors can accelerate in milliseconds. Running the motor can lead to other sections
of the machine moving dangerously. Moving parts must be screened off to prevent
operators coming into contact with them. The working procedure must allow the operator to
keep well clear of the danger area.
Burning Hazard
Always bear in mind that some parts of the surface of the motor can reach temperatures
exceeding 100°C.

7 - PVD 3661 MGV_ commisionning manual_March 2012.docx
2. PRODUCT DESCRIPTION
2.1. Overview
The MGV high-speed motors from Parker are innovating solutions through direct drive, specifically designed for
industrial applications where high speed is needed.
The MGV motors are brushless synchronous servomotors, with permanent magnets, based on HKW active
parts and fully integrated with a water-cooled housing, high speed ball 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
torque at low speed and a constant power after a given speed (called base speed).
As there is no current in the rotor, the losses in the rotor are very low
SEE PVD 3627_GB
2.2. Motor description and Applications
SEE PVD 3627_GB

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2.3. General technical data
Motor type
Permanent-magnet synchronous motor
Magnet material
Nd-Fe-B
Number of poles
Size: MGV400 MGV600 MGV800 MGV900 MGVA00
Nbr of poles: 4 6 6 6 8
Mechanical interface
Flange IM3001 (IM B5) or feet IM1001 (IM B3)
(IEC60034-7)
Sizes
4, 6, 8, 9, A
Degree of Protection
IP40 as standard
Cooling
Water cooled
Cooling water temperature 5°C to 25°C (IEC 60034-1) – to avoid condensation see
§3.6
Altitude Up to 1000m (IEC 60034-1)
(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 encoder signal
connector.
Insulation of the stator winding
Class F according to IEC 60034-1 with potting
Thermal protection
1 PTC probes and 1 KTY84-130 sensor
Operating temperature
0°C…+40°C (IEC 60034-1) – to avoid condensation see
§3.6
Storage temperature
-20… +60°C
Rotor balancing
G1 class
Shaft end
Smooth shaft as standard
Bearings
Steel or ceramic, depending on speed and load
Sensor
Resolver
Paint finish
Black RAL9005
Marking
CE

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2.4. Product Code
Code M G V 8 4 0 C A E A B 3 L R 1 0 0 0
Product Series
Motor size (in connection
with diameter)
4, 6, 8, 9, or A
Active Part Length
Torque / Speed characteristics
See motor datas
Feedback Sensor
A : Resolver
K : sin/cos encoder (on request)
Mounting arrangement
B3 : by feet
B5 : by flange
Bearing design
L : Low speed (common bearing)
H : high speed (hybrid bearings)
X : very high speed (X-Life bearings)
Unused character
Mechanical Option
1 : Cable connection
6 : terminal box (on request)
000 : Standard motor

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3. TECHNICAL DATA
3.1. Motor selection
3.1.1.
From 0 to1000 m : no derating
Altitude derating
From 1000 to 4000 m : torque derating of 5% for each step of 1000 m
3.1.2.
Water cooled motor
Temperature derating
Typical values are given with a water inlet temperature of 25°C and a temperature gradient Inlet-Outlet of 10°C.
These references lead to a winding overheating of 90°C corresponding to a winding temperature of 115°C.
Recommendations regarding condensation issues are given at § 3.6.
It is possible to increase a little bit the Inlet temperature up to 40°C, but the torque must be reduced. The
following formula gives an indicative about the torque derating at low speed. But in any case refer to SSD
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.
CC
etemperaturInletC
deratingTorque °
°−°
=90 )_115( *100[%]_
At high speed, the calculation is more complex, and the derating is much more important.
Please refer to PARKER to know the precise data of Torque derating according to water
inlet temperature at high speed for a specific motor.
N.B. No general rules can be applied concerning the torque derating of MGV motors at high speed. Please
refer to Parker for each case.
In fact, the torque derating at high speed also depends on :
- the flux weakening ratio which leads to a short circuit current inherent in the motor (no action can
reduce its value),
- the maximal speed of the motor which determines the iron losses and mechanical losses due to the
rotation.
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 derating at low speed [%]

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3.1.3. Thermal equivalent torque (rms torque)
SEE PVD 3627_GB
3.1.4. Acceleration – Deceleration time with MGV motors
SEE PVD 3627_GB
3.1.5.
The drive selection depends on its rated power, nominal current and maximal electrical frequency able to be
managed by the drive and by the flux weakening ratio.
Drive selection
Please refer to the drive technical documentation for any further information and to select
the best motor and drive association.
Short circuit current of the motor must be lower than the permanent current of the
drive Icc_motor < IS1_drive
Please refer to the drive technical documentation
Short circuit current of the motor must be lower than 0.8 times the peak current of the
drive Icc_motor < 0.8 x Ipeak_drive
Please refer to the drive technical documentation
Max back emf of the motor must be lower than the max voltage (from the motor) supported
by the drive
Please refer to the drive technical documentation
The drive must be able to manage the flux weakening and must avoid voltage higher than
the nominal motor voltage at the motor terminals.
Please, check field weakening ratio supported by the drive.
Field weakening ratio = Max speed divided by the basis speed
Due to the maximum electrical frequency able to be managed by the drive, the motor has a
speed limitation given as follows:
( )
polesNumber_of_
60*Hz)frequency(Max_drive_*2
rpmlimitationSpeed =

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Other limitations can come from the bearing type
(steel straight, hybrid or Xlife)
Cf: §3.4 Bearing
3.1.6.
Recommended reduced current at speed < 3 rpm:
Current limitation at stall conditions (i.e. speed < 3 rpm)
00 *0.7*
2
1IIIreduced ≅=
Warning: The current 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 70% of I0
(permanent current at low speed), in order to avoid an excessive overheating of the motor.
Please refer to the drive technical documentation for any further information and to choose
functions to program the drive.
3.1.7. Peak current limitations
It is possible to use the MGV motors with a current higher than the permanent current. But, to avoid any
overheating, the following rules must be respected.
1) The peak currents and peak torques given in the data sheet must never be exceeded
2) The thermal equivalent torque must be respected (§3.1.3)
3) If 1) and 2) are respected (it can limit the peak current value or duration), the peak current duration
(tp) must be limited, in addition, accordingly to the following table (Io is the permanent current at low
speed):
0
0.5
1
1.5
2
2.5
3
3.5
0 5 10 15 20 25
Peak current/Low speed
current
Time
I/Io
tp
tc

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Tp (second)
Ipeak/In
1,2
1,4
1,6
1,8
2
2,2
2,4
>2.4
MGV4
2,8
1,3
0,8
0,6
0,4
0,3
0,3
not allowed
MGV6
2,7
1,2
0,8
0,5
0,4
0,3
0,3
MGV8
2,9
1,3
0,8
0,6
0,4
0,3
0,3
MGV9
5,4
2,5
1,5
1,1
0,8
0,6
0,5
MGVA
5,4
2,5
1,5
1,1
0,8
0,6
0,5
Consult us for more demanding applications.
3.2. Motor characteristics and drive association
3.2.1.
Motor
Intrinsic characteristics
Electronic
Drive
S1 Power
S6 power
Low speed
torque S1
Low speed
S6 torque
Base
speed
Max speed
Bearings Permanent
current at
low speed
S6 current
at low
speed
PS1
PS6
Mo
MoS6
Nb
N
Io
Io S6
(kW)
(kW)
(Nm)
(Nm)
(rpm)
(rpm)
(Arms)
(Arms)
MGV430BAL
DRIVE 25/51 - 400
10
10
7,3
11
13100
45000
X life
24,7
50,2
MGV430BAI
DRIVE 35/79 - 400
15,6
15,6
6,8
11
21900
45000
X life
35,0
78,1
MGV635CAF
DRIVE 37/57 - 400
15,6
15,6
20
30
7450
30000
X life
36,6
56,1
MGV635CAD
DRIVE 55/85 - 400
25
25
20
30
11900
30000
X life
54,8
84,2
MGV840CAP DRIVE 37/57 - 400 16 16 68 100 2250 24000 X life 36,3 56,7
MGV840CAH
DRIVE 73/114 - 400
32
32
68
100
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
MGV950CAC
DRIVE 222/456 - 400
105
105
200
300
5010
20000
X life
252,0
456,0
MGV950CAX
DRIVE 454/821 - 400
175
175
200
300
8350
20000
X life
454,0
821,0
MGV970CBX
DRIVE 542/661 - 400
230
230
390
490
5630
12000
Hybrid
542
754.0
MGVA50DAC
DRIVE 154/191 - 400
67
67
480
600
1330
12000
Hybrid
154,0
199,0
MGVA50DAB
DRIVE 230/287 - 400
101
101
480
600
2010
12000
Hybrid
230,0
299,0
MGVA50DAA
DRIVE 439/598 - 400
200
200
460
600
4150
12000
Hybrid
439,0
598,0
MGVA50DBB
DRIVE 470/660 - 400
195
220
620
800
3000
12000
Hybrid
465.2
653.0
3.2.2.
Motor
DIGIVEX Drive Association
Electronic
Drive
S1 Power
S6 power
Low speed
torque S1
Low speed
S6 torque
Base
speed
Max speed
Bearings
PS1
PS6
Mo
MoS6
Nb
N
(kW)
(kW)
(Nm)
(Nm)
(rpm)
(rpm)
MGV430BAL
DIGIVEX 32/64
9,7
9,7
6,9
6,9
13000
45000
X life
MGV430BAI
DIGIVEX 50/80
16
16
6,8
6,9
22000
45000
X life
MGV635CAF
DIGIVEX 50/80
16
16
19
19
7600
30000
X life
MGV635CAD
DIGIVEX 100/120
25
25
20
26
12000
30000
X life
MGV840CAP
DIGIVEX 50/80
16
16
66
66
2300
24000
X life
MGV840CAH
DIGIVEX 100/120
32
32
66
66
4600
24000
X life
MGV840CAF DIGIVEX 150 44 44 66 74 6400 24000 X life
MGV840CAD DIGIVEX 300 63 63 58 95 10000 24000 X life
MGVA50DAC
DIGIVEX 300
67
67
480
600
1300
12000
Hybrid

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3.2.3.
Motor
AC890 Drive Association
Electronic
Drive
S1 Power
S6 power
Low speed
torque S1
Low speed
S6 torque
Base
speed
Max speed
Bearings
PS1
PS6
Mo
MoS6
Nb
N
(kW)
(kW)
(Nm)
(Nm)
(rpm)
(rpm)
MGV430BAL
890SD-53230SC
10
10
7,3
8,4
13000
27900
Hybrid
MGV430BAI
890SD-532450D
16
16
6,8
7,3
22000
30000
Hybrid
MGV635CAF
890SD-532450D
16
16
20
21
7500
15800
Steel
MGV635CAD
890SD-532590D
24
24
18
18
13000
20000
Hybrid
MGV635CAD
890SD-432730E
25
25
20
27
12000
16000
Steel
MGV840CAP
890SD-532450D
16
16
68
71
2300
4510
Steel
MGV840CAH
890SD-432870E
32
32
68
83
4500
9010
Steel
MGV840CAF
890SD-433105F
44
44
66
86
6400
12000
Steel
MGV840CAD 890SD-433145F 63 63 58 67 10000 16000 Hybrid
MGV950CAC
890SD-433316G
110
110
200
220
5000
10200
Steel
MGV950CAX
890SD-433420H
160
160
170
170
8900
16000
Hybrid
MGV950CAX
890SD-433520H
180
180
200
200
8400
16000
Hybrid
MGV970CBX
890SD-433520H
220
220
350
350
6000
10900
X life
MGVA50DAC
890SD-433145F
66
66
450
450
1400
2500
Steel
MGVA50DAB
890SD-433250G
100
100
480
490
2000
3750
Steel
MGVA50DAA
890SD-433520H
200
200
460
490
4200
7510
Steel
MGVA50DBB
890SD-433520H
200
200
620
620
3000
5780
Steel
3.2.4. 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 speed Mo

15 - PVD 3661 MGV_ commisionning manual_March 2012.docx
3.2.5.
Motor
Further Data
Winding
resistance
line-line
(25°C)
Rotor inertia
Thermal time
constant
Motor mass
Back emf
constant at
1000 rpm
Winding
quadrature
inductance
line-line
Winding
direct
inductance
line-line
Number of
poles
Short-circuit
current
Rb
J
Tth
M
Ke
Lq
Ld
Icc
(Ohms)
(kg.m²)
(min)
(kg)
(Vrms)
(mH)
(mH)
-
(Arms)
MGV430BAL
0,541
0,00089
1
35
18,3
5,68
4,96
4
20,3
MGV430BAI
0,205
0,00089
1
35
11,7
2,35
2,05
4
31,6
MGV635CAF
0,427
0,00352
1,5
50
32,2
4,35
3,82
6
31
MGV635CAD
0,189
0,00352
1,5
50
21,5
1,93
1,7
6
46,5
MGV840CAP
0,823
0,0186
2,4
100
113
15,4
12,8
6
32,5
MGV840CAH
0,209
0,0186
2,4
100
56,6
3,84
3,2
6
65
MGV840CAF 0,117 0,0186 2,4 100 42,4 2,16 1,8 6 87
MGV840CAD 0,0522 0,0186 2,4 100 28,3 0,96 0,8 6 130
MGV950CAC
0,0239
0,063
3,2
250
50,1
0,954
0,9
6
204
MGV950CAX
0,00747
0,063
3,2
250
27,8
0,294
0,278
6
368
MGV970CBX
0,00963
0,0866
3
270
47
0,35
0,368
6
470
MGVA50DAC 0,141 0,292 4 400 204 4,36 4,32 8 130
MGVA50DAB 0,063 0,292 4 400 136 1,94 1,92 8 195
MGVA50DAA 0,0157 0,292 4 400 67,9 0,484 0,48 8 390
MGVA50DBB
0,0166
0,292
4
400
88,2
0,548
0,551
8
441
3.2.6.
3.2.6.1. Electric time constant:
Time constants of the motor
SEE PVD 3627_GB
3.2.6.2. Mechanical time constant:
SEE PVD 3627_GB
3.2.6.3. Thermal time constant of the copper:
SEE PVD 3627_GB
3.2.7.
SEE PVD 3627_GB
Voltage withstand characteristics of MGV series
3.3. Dimension drawings
SEE PVD 3627_GB

16 - PVD 3661 MGV_ commisionning manual_March 2012.docx
3.4. Motor mounting
3.4.1.
By flange and feet
Motor mounting
By feet
3.4.2. Typical mounting.
Warning
No additional weight must be mounted 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 must be supported by bearings.
For vertical mounting, Please consult us.
The load capacity and vibration resistance on shaft are
different than for horizontal mounting.
Load
Load
Bearing
Load Bearing
Motor
Coupling

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3.4.3. Frame recommendation
Warning : The user has the entire responsibility to design and prepare the support, the
coupling device, shaft line alignment, and shaft line balancing.
Foundation must be even, sufficiently rigid and shall be dimensioned in order to avoid vibrations due to
resonances.
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.
The motor vibration magnitudes in rms value are in accordance with IEC 60034-14 – grade A:
maximum rms vibration velocity for MGV4/MGV6/MGV8 is 1.3mm/s for rigid mounting
maximum rms vibration velocity for MGV9/MGVA is 1.8mm/s for rigid mounting
Warning
Vibration may also be caused by driving elements with a natural oscillation frequency very
close to the excitation due to the small residual unbalance of the rotating masses of the
motor.
: A grade A motor (according to IEC 60034-14) well-balanced, may exhibit large
vibrations when installed in-situ arising from various causes, such as unsuitable
foundations, reaction of the driven motor, current ripple from the power supply, etc.
In such cases, checks should be carried out not only on the machine, but also on each
element of the installation. (See ISO 10816-3).
3.4.4. Motor alignment
To align easily the motor and the load, we recommend adding screws to push the motor smoothly. Enough
screws must be used to move the motor (or the load) in all directions. At each step of the setting, wedges have
to be inserted between the motor feet and the frame.
Wedges
Wedges
Use screws
to lift lightly
the motor
Same settings
on others
directions

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3.4.5.
The permitted loads on the shaft are limited to low values low level (excepted with specific bearing), it is
mandatory to use a flexible coupling between the motor and the load.
Coupling
Different kind of couplings can be used like bellow
coupling or disc coupling. They offer hard torsion
stiffness.
To fit the coupling on the shaft, we recommend using
shrink disc or locking assembly. Other devices like
keyways are unbalanced and are not
compatible with the high speed.
To choose the coupling, all the components of the shaft line must be taken into
account: motor, load, load’s bearings, coupling, speed, acce
leration, balancing,
alignment….
The coupling supplier can help to define the best coupling.
Warning
Thermal expansion can also generate strain and load.
: The coupling misalignment generates strains and loads on motor shaft depending
on the stiffness of the coupling.
These forces (axial and radial) must be below the maximum shaft allowed forces (§3.4).
Warning : Parker will not be responsible for any motor shaft failure due to excessive strains
on the shaft .
3.4.6. Pulley/belt
Warning
By limiting the speed and/or using specific bearing assemblies, it can be possible in some
cases to use pulley / belt systems. It is mandatory to raise a request to the factory before
doing so.
: The MGV motors are not designed to operate with pulley / belt systems.

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3.4.7.
It is highly recommended to implement a vibratory control in accordance with the ISO 10816 standard to detect
any sign of mechanical evolution before breakdown.
Vibration and bearings temperature control
Accelerometers must be located closed to the bearings
Moreover, it is highly recommended to monitor the bearings temperature. This control can detect temperature
evolutions that are the first signs of the bearings end life. We recommend the process below:
- record initial bearing temperature after 1 hour of running.
- calculate the temperature rise = bearing temperature – ambient temperature.
- if temperature rise increase by 15°C during the machine life, the motor must be stopped.
3.4.8.
Frequency domain :10 to 55 Hz according to EN 60068 -2-6
Vibration resistance to shaft end
Vibration resistance to the shaft end :
- radial 0.9 g
- axial 0,3 g
Accelerometers
(vibration sensor)
Temperature sensors

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3.5. Bearings
The bearings are greased for life.
The statistic bearings life is limited from 6000h up to 10000h depending on the way there are assembled and
used, it is recommended to control the vibrations every 3000h or to change it once the predicted lifetime is
reached.
This period is indicative and has to be considered with the load and speed limits taken into account for the
bearings calculation.
Depending on the maximum speed, the loads and the needed lifetime, those high-speed motors can be
equipped with different kind of bearings: steel ball bearings, hybrid ball bearings (ceramic balls with a synthetic
cage) or Xlife bearings (ceramic balls with rings made with high performance iron).
Max possible speed tab depending on bearing type
FOR HORIZONTAL MOUNTING ONLY
STEEL STRAIGHT BEARINGS
HYBRID BEARINGS
X LIFE BEARINGS
Motor
Max speed
Radial
Axial
Max speed
Radial
Axial
Max speed
Radial
Axial
Load*
Load*
Load*
Load*
Load*
Load*
rpm
N
N
rpm
N
N
rpm
N
N
MGV420
26000
100
30
33000
100
30
45000
100
20
MGV430
26000
100
30
33000
100
30
45000
100
20
MGV620
18500
320
80
25000
320
80
30000
240
60
MGV635
18500
320
80
25000
320
80
30000
240
60
MGV820
14300
400
100
18000
400
100
24000
400
100
MGV840
14300
400
100
18000
400
100
24000
400
100
MGV930
11700
500
120
16000
700
160
20000
500
120
MGV950
11700
500
120
16000
700
160
20000
500
120
MGV970
-
-
-
12000
200
500
MGVA30
9200
700
120
12000
700
120
-
-
-
MGVA50
9200
700
120
12000
700
120
-
-
-
*LOAD ON THE MIDDLE OF THE SHAFT
Possible speed and load depending on bearing type
Other limitations can come from the winding or the drive
(cf: §3.1.4-Drive selection)