Fagor FXM1 Series User manual

MOTOR FXM|FKM
Installation manual
Ref.2105

Responsibility exemption
The information described in this manual may be subject to changes
due to technical modifications. Fagor Automation S. Coop. reserves
the right to change the contents of this manual without prior notice.
The content of this manual and its validity for the product described
here has been verified. Nevertheless, the information, technical or
otherwise, in these manuals or in any other type of documentation is
not guaranteed to be integral, sufficient or up to date.
Involuntary errors are possible, hence the absolute match is
guaranteed. However, the contents of manuals and documents are
regularly checked and updated implementing the pertinent
corrections in later editions.
Fagor Automation S. Coop. will not be held responsible for any
losses or damage, direct, indirect or by chance that could result from
that information and it will be the user's responsibility to use it.
Responsibility and warranty claims are excluded in case of shipping
damage, wrong usage of the unit in wrong environments or when not
used for the purpose for which it has been designed, ignoring the
warnings and safety indications given in this document and/or legal
ones that may be applied to the work place, software modifications
and/or repairs made by unauthorized personnel, damage caused by
the influence of other nearby equipment.
ECDeclaration of Conformity and Warranty Terms
The warranty terms may be requested from your Fagor Automation
representative or through the usual commercial channels.
The warranty terms are available in the downloads section of
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section of FAGOR’S corporate website at,,
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May 2021 / Ref.2105
All rights reserved. No part of this documentation may be copied,
transmitted, transcribed, stored in a backup device or translated into
another language without Fagor Automation’s permission.
Original manual. Any translation of the original manual (spanish
or english) will replace the phrase ORIGINAL INSTRUCTIONS with
TRANSLATION OF THE ORIGINAL INSTRUCTIONS.
ORIGINAL INSTRUCTIONS

Title FXM/FKM MOTOR
Type of documentation Description and installation of FXM|FKM synchronous axis motors. Associated with FAGOR
drives.
Electronic document man_fxm_fkm_motors.pdf
Language English
Manual reference Ref.2105
Web The user must always use the latest reference of this manual, available on FAGOR'S
corporate website. http://www.fagorautomation.com.
Email [e-mail]
Version history
Manual reference Events
0403 First version.
0712 FKM6 series. Models:
FKM66.30A.
 .  0, FKM64.40A.  .  0, FKM64.20F.  .  0.
0807 FKM6 series. Models: FKM62.60A.  .  0.
0811
FKM2 series. Models: FKM22.60A.  .  0
FKM4 series. Models: FKM42.60A.
 .  0.
FKM6 series. Models:
FKM66.20A.
 .  0, FKM66.20F.  .  0, FKM64.30F.  .  0, FKM62.40F.  .  0.
1006 Serie FKM9. Models: FKM94.20A.  .  0, FKM95.20A.  .  0, FKM96.20A.  .  0.
1101 Modification to feedback cables EEC and EEC-SP.
1112 Corrected typos.
1301
The motor feedback cable EEC-
 has been discontinued.
FKM4 series. Models: FKM44.20A.
 .  0. The FKM44.30A.  .  .2 motor replaces the
FKM44.30A.  .  0, optimized for ACSD-16H drives.
FKM6 series. Models: FKM64.20A.
 .  0. The FKM66.20A.  .  .2 motor replaces the
FKM66.20A.  .  0, optimized for ACSD-16H drives.
FKM8 series. Models:
FKM82.20A.
 .  0, FKM82.30A.  .  0, FKM82.40A.  .  0,
FKM83.20A.
 .  0, FKM83.30A.  .  0,
FKM84.20A.  .  0, FKM84.30A.  .  0,
FKM85.20A.  .  0.
1307 Pairs of poles. Reference to holding brake connection diagram.
Tolerance levels on the blueprints of FKM motors.
1403
Tolerances in certain dimensions on FXM blueprints.
Length of the power connectors MC 23 and AMC 23.
FKM8/V series. Models:
FKM82.40A.
 .  1, FKM83.30A.  .  1,
FKM84.20A.
 .  1, FKM84.30A.  .  1, FKM85.20A.  .  1.
1409 Corrected LB dimension on FKM2/4/6 motors.
1501
FKM4 series. Models:
FKM43.20A.
 .  0, FKM43.30A.  .  0, FKM43.40A.  .  0, FKM43.30F.  .  0.
FKM6 series. Models: FKM63.20A.
 .  0, FKM63.30A.  .  0, FKM63.40A.  .  0, FKM63.20F.  .  0,
FKM63.30F.  .  0.
FKM8/V series. Models: FKM85.30A.
 .  1.
1606
FKM8/V series. The reference of the fan connector MC-20/6 has been included in tables.
EEC-SP-60 motor feedback cable. Length: 60 m.
FKM1 series. Models: FKM12.45A.
 .  0.02, FKM14.45A.  .  0.02.
1703
FKM4 series. Models:
FKM44.20A.
 .  20, FKM44.30A.  .  20.2, FKM44.40A.  .  20.
FKM6 series. Models:
FKM66.20A.
 .  20.2, FKM66.30A.  .  20.
FKM6/V series. Models:
FKM66.20A.
 .  01.2, FKM66.20A.  .  21.2, FKM66.30A.  .  21.
Replacing the temperature sensor in FKM2/4/6/8/6V/8V motors: RTD Pt1000 thermoresistances.
Temperature sensor, feedback device and holding brake. Requirements of low voltage limited energy
secondary circuits DVC A according IEC/UL 61800-5-1.

2105
New commercial references:
FKM  .  .  .8  .  -  . Servomotor with special configuration and seal · IP 65 ·
Removal of the ·vers.x· field on the nameplate.
The reference of the fan and servomotor connector MC-30/6 has been included in tables.
A change to the “LA” dimension on the packaging of the FKM8 ventilated servomotors.
Readjustments to some peak currents. Readjustment of the Kt to a single decimal place.

Ref.2105
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FXM|FKM
SERVOMOTOR
GENERAL INDEX
Notes of operating safety .............................................................................................................. 9
Operating notes............................................................................................................................ 10
Storage.......................................................................................................................................... 11
Shipping........................................................................................................................................ 12
Installation .................................................................................................................................... 13
Cabling .......................................................................................................................................... 14
Operation ...................................................................................................................................... 15
Maintenance and inspection ....................................................................................................... 16
1 GENERAL CONCEPTS ................................................................................................. 17
Electrical concepts ...................................................................................................................... 17
Operating limits........................................................................................................................... 17
Definitions ................................................................................................................................... 19
Characteristics plate ................................................................................................................... 20
Mechanical concepts ................................................................................................................... 22
Construction types ...................................................................................................................... 22
Degrees of protection ................................................................................................................. 22
Ventilation ................................................................................................................................... 22
Bearings...................................................................................................................................... 22
Shaft extension ........................................................................................................................... 22
Seal............................................................................................................................................. 22
Eccentricity and concentricity ..................................................................................................... 23
Noise emission. Acoustic pressure level .................................................................................... 23
Vibration magnitude.................................................................................................................... 24
Balancing .................................................................................................................................... 24
Radial load and axial load........................................................................................................... 25
Installation .................................................................................................................................... 26
Mounting conditions.................................................................................................................... 26
Things to check before the start-up ............................................................................................26
Cabling........................................................................................................................................ 27
Feedback devices....................................................................................................................... 30
Feedback replacement ............................................................................................................... 32
2 3-PHASE SERVOMOTORS. FXM ................................................................................. 35
Description ................................................................................................................................... 35
General characteristics ............................................................................................................... 36
Temperature sensor..................................................................................................................... 37
Outside appearance..................................................................................................................... 38
Technical data .............................................................................................................................. 39
Non-ventilated FXM with “A” winding · 400 Vac · ....................................................................... 39
Ventilated FXM with “A” winding · 400 Vac · .............................................................................. 41
Non-ventilated FXM with “F” winding · 220 Vac · ....................................................................... 42
Options / Expansions .................................................................................................................. 43
Holding brake.............................................................................................................................. 43
Fan.............................................................................................................................................. 43
Connections ................................................................................................................................. 44
Sales reference............................................................................................................................. 50
Technical data. Torque-Speed curves ....................................................................................... 51
Drive selection. General criterion................................................................................................ 51
Calculation of the drive peak torque ...........................................................................................51
Limiting the drive peak torque..................................................................................................... 51
Non-ventilated FXM with “A” · 400 Vac · .................................................................................... 52

General index
i.
6
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SERVOMOTOR
Ventilated FXM with “A” winding · 400 Vac · .............................................................................. 69
Non-ventilated FXM with “F” winding · 220 Vac · ....................................................................... 78
Axial and radial loads on the shaft extension ........................................................................... 92
Dimensions................................................................................................................................... 93
FXM1 series................................................................................................................................ 93
FXM3 series................................................................................................................................ 94
FXM5 series................................................................................................................................ 95
FXM7 series................................................................................................................................ 96
FXM5/V series ............................................................................................................................ 97
FXM7/V series ............................................................................................................................ 98
3 3-PHASE SERVOMOTORS. FKM................................................................................. 99
Description ................................................................................................................................... 99
General characteristics ............................................................................................................. 100
FKM1 series.............................................................................................................................. 100
FKM2/4/6/8 series..................................................................................................................... 100
FKM9 series.............................................................................................................................. 101
Temperature sensors................................................................................................................. 102
PTC KTY84-130 thermistor ...................................................................................................... 102
PTC 111-K13-140 thermistor.................................................................................................... 103
RTD Pt1000 thermoresistance ................................................................................................. 104
Outside appearance................................................................................................................... 105
Rotary connectors ..................................................................................................................... 106
FKM1 series.............................................................................................................................. 106
FKM2/4/6/8/9 series.................................................................................................................. 106
FKM6/V series .......................................................................................................................... 107
FKM8/V series .......................................................................................................................... 108
Technical data ............................................................................................................................ 109
Non-ventilated FKM with “A” winding · 400 Vac · ..................................................................... 109
Ventilated FKM with “A” winding · 400 Vac · ............................................................................ 110
Non-ventilated FKM with “F” winding · 220 Vac · ..................................................................... 110
Options / expansions................................................................................................................. 111
Holding brake............................................................................................................................ 111
Fan............................................................................................................................................ 112
Connections ............................................................................................................................... 113
FKM1/2/4/6/6V series ............................................................................................................... 113
FKM8/8V/9 series ..................................................................................................................... 123
Sales reference........................................................................................................................... 130
Technical data. Torque-Speed curves ..................................................................................... 131
Drive selection. General criterion.............................................................................................. 131
Calculation of the drive peak torque ......................................................................................... 131
Limiting the drive peak torque................................................................................................... 131
Non-ventilated FKM with “A” winding · 400 Vac · ..................................................................... 132
Ventilated FKM with “A” winding · 400 Vac · ............................................................................ 150
Non-ventilated with “F” winding · 220 Vac ·.............................................................................. 155
Axial and radial loads on the shaft extension ......................................................................... 164
Dimensions................................................................................................................................. 165
FKM1 series.............................................................................................................................. 165
FKM2 series.............................................................................................................................. 166
FKM4 series.............................................................................................................................. 167
FKM6 series.............................................................................................................................. 168
FKM6/V series .......................................................................................................................... 169
FKM8 series.............................................................................................................................. 170
FKM8/V series .......................................................................................................................... 171
FKM9 series.............................................................................................................................. 172

Ref.2105
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FXM|FKM
SERVOMOTOR
Title Installation manual for AC servomotors FXM/FKM.
Type of documentation Description and installation of FXM/FKM motors. Association with AXD
modular axis drives and ACD compact drives.
Internal code It belongs to the manual directed to the manufacturer (OEM). The manual
code does not depend on the software version.
Manual reference Ref.2105.
Startup
Warning
Headquarters
Fagor Automation, S. Coop.
B.º San Andrés 19, apdo.144
C.P. 20500, Arrasate-Mondragón
www.fagorautomation.com
[email protected]
The contents of this manual have been verified and matched with the
product described here. Even so, it may contain involuntary errors that
make it impossible to ensure an absolute match. However, the contents of
this document are regularly checked and updated implementing the
pertinent corrections in a later edition.
MAN MOTOR FXM/FKM (IN) Código 04754051
DANGER. In order to comply with the EC seal indicated on the component,
check that the machine incorporating the motor meets the specifications of
Machine Directive 2006/42/EC.
Before starting the motor up, read the indications of this chapter.
WARNING. The information described in this manual may be subject to
changes due to technical modifications. FAGOR AUTOMATION S. COOP.
reserves the right to change the contents of this manual without prior notice.
Customer support [phone]
Service Department [phone]
All rights reserved. No part of this documentation may be copied,
transmitted, transcribed, stored in a backup device or translated into
another language without Fagor Automation’s permission.
ABOUT THE MANUAL

Previous
2.
CONTENTS
16
· 8 ·
Ref.2105
FXM|FKM
SERVOMOTOR
To ensure a long life for FXM and FKM series servomotors, read carefully
the operating procedures indicated in the CONTENTS section.
This manual contains detailed documentation for FXM/FKM servomotors
as well as their associated axis AC servo drives.
CONTENTS
1 Notes of operating safety ................................................................ 9
2 Operating notes............................................................................. 10
3 Storage ...........................................................................................11
4 Shipping ........................................................................................ 12
5 Installation ..................................................................................... 13
6 Cabling .......................................................................................... 14
7 Operation....................................................................................... 15
8 Maintenance and inspection.......................................................... 16
GENERAL PRECAUTIONS
This manual may be modified due to improvements to the product,
modifications or changes in their specifications.
For a copy of this manual, if its issue has been lost or damaged,
contact your FAGOR dealer.
FAGOR shall not be held responsible for any modification made to
the product by the user. This means the cancellation of the warranty.

Previous
CONTENTS
Notes of operating safety
2.
Ref.2105
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FXM|FKM
SERVOMOTOR
1 Notes of operating safety
Symbols that may appear in this manual
Carefully read the following instructions before using the servomotor. In
these instructions, the operating safety conditions are identified by the
following labels.
Symbols that the product may carry
DANGER or prohibition symbol.
It warns about an immediate dangerous situation. Ignoring this warning
may cause serious, even fatal, consequences.
WARNING or caution symbol.
It warns about a potentially dangerous situation. Ignoring this warning
may cause serious injuries (even fatal) or damages to the unit.
MANDATORY symbol.
It warns about actions and operations that MUST BE carried out. In other
words, THEY ARE NOT PLAIN RECOMMENDATIONS. Ignoring this
warning may mean not complying with some safety regulation.
INFORMATION symbol.
Notes, warnings, advises and recommendations..
i
Ground protection symbol.
It indicates that that point must be under voltage.

Previous
2.
CONTENTS
Operating notes
16
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SERVOMOTOR
2 Operating notes
DANGER.
Observe the following sections to avoid electrical discharges or any harm.
Take to ground the ground terminals of the motor and of the drive as specified by
your international and/or local electrical regulation. Ignoring this warning may
cause electrical discharges.
Use a ground connection according to the standard local and/or international
regulation.
Do not damage the cables or apply excessive force on them. Do not load heavy
items on them or crimp them with bolts or stapes. Ignoring this warning may
cause electrical discharges.
WARNING.
Consider only the motor-drive combinations specified in the manual. Ignoring this
warning may cause poor performance or not to work at all.
Use the shortest cables possible in the electrical installations. Separate the
power cables from the signal cables. The noise on the signal cables may cause
vibrations or poor performance of the unit.
Never install them in places exposed to water splashes, gasses and flammable
or corrosive liquids or near flammable substances. Ignoring this warning may
cause fire or poor performance.
Use it under the following ambient and work conditions:
Interiors without corrosive or explosive gasses.
Ventilated places without dust or metal particles.
Ambient temperature and relative humidity indicated in this manual.
Altitude 1000 meters above sea level.
Locations that may be cleaned, maintained and tested.

Previous
CONTENTS
Storage
2.
Ref.2105
· 11 ·
FXM|FKM
SERVOMOTOR
3Storage
DANGER.
Do not store the unit in places exposed to water splashes or corrosive liquids or
gasses.
MANDATORY.
Store the motor horizontally and protected against any possible blow.
Store the unit avoiding direct exposure to the sun, keeping the temperature and
humidity within the specified ranges.
WARNING.
In the case of placing the equipment into storage for long periods of time, it is
recommended to start the servomotor on a regular basis. Not using the holding
brake for prolonged periods may cause it to suffer deterioration from rusting and
result in a possible reduction of its braking torque. Ignoring this warning may
cause personal injury.

Previous
2.
CONTENTS
Shipping
16
· 12 ·
Ref.2105
FXM|FKM
SERVOMOTOR
4 Shipping
WARNING.
Do not pull the cables or lift the motor up from its shaft in transit. Ignoring
this warning may cause personal injury or poor motor performance due to
damage to the motor.
Do not load the products too much. Ignoring this warning may cause the
load to break or personal injury.
MANDATORY.
Do not try to move it when it is connected to other equipment.

Previous
CONTENTS
Installation
2.
Ref.2105
· 13 ·
FXM|FKM
SERVOMOTOR
5 Installation
WARNING.
Do not climb on top of the motor nor load it with heavy objects. Ignoring
this warning may cause personal injury.
Do not block either the air intake or the air output in ventilated motors and
prevent strange materials from getting in. Ignoring this warning may cause
fire or damage to the unit.
When unpacking, use the proper tool to open the box. Ignoring this
warning may cause personal injury.
Cover the rotary parts so they cannot be touched. Ignoring this warning
may cause personal injury.
The motor shaft extension is covered with anti-corrosive paint. Before
installing the motor, remove the paint with a cloth dampened in liquid
detergent.
MANDATORY.
When connecting the motor to the machine load, special care must be
taken with centering, the tension of the pulley and the parallelism of the
pulley.
A flexible coupling must be used to couple the motor with the machine
load.
The encoder attached to the motor shaft is a precision element. Do not
apply excessive force on to the drive shaft. The machine must be
designed so the axial and radial loads applied to the shaft extension while
in operation must be within the range indicated in this manual for this
model.
No additional machining must be carried out to the motor.
INFORMATION.
After installing the motor on the machine, we recommend that you break
in the servomotor, holding brake and the components connected to
ensure the proper braking torque and so that the system settles
mechanically and thermally to reduce any possible vibrations and noises
due to internal and/or external tensions. To run in the brake, turn the
motor outside the machine at 1000 rev/min while intermittently engaging
and releasing the brake (t < 1 s) ten times.
i

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2.
CONTENTS
Cabling
16
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FXM|FKM
SERVOMOTOR
6Cabling
MANDATORY.
The installation must comply with Directive EMC 2014/30/EU.
The motor is component to be incorporated on machines. They must comply with
Machine Safety Directive 2006/42/EC and cannot be started up until this directive
is met.
Install the cables safely according to the connection diagrams. Ignoring this
warning may cause the motor to run away and personal injury.
Make sure that the power input is off before doing the installation.
Foresee a protection circuit so the main machine is not connected when the
motor-fan group is not running.
Carry out the right ground connection and electrical noise control (disturbances).
Use the shortest cables possible in the installation. Run the power cables as far
away from the signal cables as possible. Do not run the power cables and the
signal cables through same cable hose or conduit. The noise in signal cables
may cause vibration or poor performance.
Use the cables specified by FAGOR. When using other cables, check the rated
current of the unit and bear in mind the work environment in order to properly
select the cables.

Previous
CONTENTS
Operation
2.
Ref.2105
· 15 ·
FXM|FKM
SERVOMOTOR
7Operation
WARNING.
To properly check the motor, it must be properly secured and disconnected from
the machine load. Then, run the pertinent checks and connect the machine load
again. Ignoring this warning may cause personal injury.
In case of error or alarm, correct its cause. First verify the safety conditions and
then resume the operation after eliminating the error. See section ·SAFETY
CONDITIONS· in the “man_dds_hard.pdf” manual and chapter ·ERROR CODES
AND MESSAGES· in the “man_dds_soft.pdf” manual of the drive.
If there is a momentary power loss, disconnect the power supply. The machine
may run suddenly causing personal injury.
MANDATORY.
Do not attempt to lift, move the motor while it is attached to another unit without
freeing it first.

Previous
2.
CONTENTS
Maintenance and inspection
16
· 16 ·
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FXM|FKM
SERVOMOTOR
8 Maintenance and inspection
DANGER.
Only authorized personnel may take the unit apart and repair the unit.
Contact your FAGOR representative before taking the motor apart.
The AC axis motor only needs a simple daily inspection. Adjust the inspection
periods depending on the operating conditions and work environment.

1
Ref.2105
· 17 ·
FXM|FKM
SERVOMOTOR
GENERAL CONCEPTS
1.1 Electrical concepts
Operating limits
Electrical limitations for a synchronous servomotor
The figure shows the torque-speed diagram that shows the electrical
limitations for a synchronous servomotor.
Elements shown:
1. Curves for torque limitation by voltage depending on type of stator
winding.
2. Curve for thermal torque limitation in continuous duty S1 (100 K) with
fan, where 100 K is the temperature increase at the winding.
3. Curve for thermal torque limitation in continuous duty S1 (100 K)
without fan, where 100 K is the temperature increase at the winding.
4. Maximum turning speed limitation (in voltage) Nmax.
5. Voltage saturation curves.
F- 1/1
Electrical limitations in synchronous servomotors.
Mains voltage: 400-15% = 340 Vrms
Motor voltage: 400-15%-4.5% = 325 Vrms
Mains voltage: 220-15% = 187 Vrms
Motor voltage: 220-15%-4.5% = 179 Vrms
Mains voltage: 400 Vrms
Motor voltage: 400-4.5% = 382 Vrms
Mains voltage: 220 Vrms
Motor voltage: 220-4.5% = 210 Vrms
Mains voltage: 400-10% = 360 Vrms
Motor voltage: 400-10%-4.5% = 344 Vrms
Mains voltage: 220-15% = 187 Vrms
Motor voltage: 220-15%-4.5% = 179 Vrms
TORQUE
A
5
4
1
2
3
M (Nm)
SPEED
N (1 / mi n)
6
5
4
3
2
1
0
BC D
0 1200 2000 3000 4000
VOLTAGE LIMITS CHARACTERISTICS
INFORMATION.
Note that this data is valid for ambient temperature or an average cooling
temperature of 40°C/104°F and a maximum altitude of 1000 meters
above sea level.
i

General concepts
1.
GENERAL CONCEPTS
Electrical concepts
34
· 18 ·
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FXM|FKM
SERVOMOTOR
Electromechanical limitations for the motor-drive combination
The figure shows the electromechanical limitations for the motor-drive
combination.
where:
ZONE 1 is the permanent duty area (S1 duty) and it is delimited by the
motor stall torque and the torque at rated speed.
ZONE 2 is the intermittent duty zone.
F- 1/2
Electromechanical limitations for the motor-drive combination.
Voltage limit
1
2
Limit Torque
Limitation due to maximum
through the drive
Mlim
RatedTorque
Mn
(100 K)
Speed (rpm)
Rated Speed
nN
Motor Peak Torque
Mp
StallTorque
Mo
(100 K)
Peak Torque limited
by the drive
Torque (Nm)

General concepts
GENERAL CONCEPTS
Electrical concepts
1.
Ref.2105
· 19 ·
FXM|FKM
SERVOMOTOR
Definitions
We now define the electromechanical terminology for servomotors used in
the previous section.
where:
where:
Stall torque (Mo) Max. torque that the motor can supply when the rotor is locked and is
thermally limited by the temperature increase at the stator winding (T=100
K). This torque is available for a zero motor turning speed for an unlimited
time period. The stall torque M0 is always greater than the rated torque Mn.
Stall current (Io) Current circulating through each phase of the stator winding required to
generated the stall torque. This current can circulate for an unlimited time.
Rated torque (Mn) Torque that the motor can supply continuously at its rated speed thermally
limited by the temperature increase at the stator winding (T=100 K).
Rated current (In) Current circulating through each phase of the stator winding required to
generated the rated torque Mn.
Rated power (Pn) Power available at rated speed and rated torque. Its value is given by the
expression:
Pn
MnnN

9550
-------------------=
Max. speed (Nmax) Rotor turning speed limitation due to electrical restrictions. Note that the
maximum value of this speed is shown in the graphs given in this manual.
Peak torque (Mp) Maximum torque (limited by current). It is available for dynamic operations
such as accelerations, etc. The value of this current is always limited by the
drive control parameter ·CP20· in face of the risk of exceeding the
destruction temperature of the insulation of the stator winding.
Acceleration time (tac)
without inertia on the axis
Time it takes the motor to accelerate from rest state to its rated speed with
maximum torque.
Torque constant (Kt) Torque generated according to the current supplied. Its value may be
calculated with the division of the stall torque by the stall current (Mo/Io).
Kt Torque constant in N·m/A
Mo Stall torque in N·m
Io Stall current in A
KtM0I0 =
Calculating power (Pcal) Power value given by the expression:
Pcal Calculating power in kW
Mo Stall torque in N·m
Nn Motor rated speed in rev/min
Pcal
M0Nn 
9550
--------------------=
Resistance of the stator
winding (R)
Value of the resistance of a phase at an ambient temperature of 20°C/68°F.
The stator winding has a star configuration.
Inductance of the stator
winding (L)
Value of the inductance corresponding to a phase when using three-phase
power supply. The stator winding has a star (Y) configuration.

General concepts
1.
GENERAL CONCEPTS
Electrical concepts
34
· 20 ·
Ref.2105
FXM|FKM
SERVOMOTOR
Characteristics plate
The specifications label stuck on synchronous servomotors supplied by
FAGOR offers the necessary data to identify the motor for the user. This
characteristics plate of the motor is located on the right side of the motor
viewed from its shaft.
FKM1 series
FKM2/4/6/8/6V/8V series
Current model of the characteristics plate:
Previous model of the characteristics plate:
F- 1/3
Identification label. FKM1 series.
F- 1/4
Identification label. FKM2/4/6/8/6V/8V series.
T- 1/1 Meaning of the fields of the identification plate.
1Serial Nr 10 Insulation class
2EC seal 11 Rated speed
3Postal address 12 Balancing class
4Stall current 13 Mass
5Peak current 14 Rated voltage
6Stall torque 15 Holding brake, unlocking voltage
7Peak torque 16 Rated power
8Motor model reference 17 QR code
9Degree of protection 18 Fan, voltage/current
F- 1/5
Identification label. FKM2/4/6/8/6V/8V series.
Motor model
reference
nN
DC voltage of the intermediate circuit
Mo In
Serial Nr
K
kg
3
5
4
6
7
8
910
12
11
15 13 14
1
16
17
18
2
2
3
5
4
6
7
9
10
12
11
15 13 14
1
8