10Troubleshooting and fault elimination45............................................
4
Lenze • BA 33.0006 • 5.1
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About this documentation
1Aboutthis documentation
Contents
• The present documentation serves to safely work on and with the drives. It
includes safety instructions which must be observed.
• All persons working on and with the drives must have the documentation
available and must observe the information and notes relevant for their work.
• The documentation must always be in a complete and perfectly readable state.
If the information provided in this documentation is not sufficient in your case, please
refer to the controller or gearbox documentation.
Tip!
Information and tools concerning the Lenze products can be found in the
download area at
www.lenze.com
1
Document history
Validity
This documentation applies to servo motors:
TypeName
MCS
MCM
MCA
MQA
MDKSSynchronous servo motors
Synchronous servo motors
Asynchronous servo motors
Target group
This documentation is directed at qualified skilled personnel according to IEC 60364.
Qualifiedskilled personnel arepersonswhohave therequired qualificationstocarry out
all activities involved in installing, mounting, commissioning, and operating the
product.
1.1Document history
Material numberVersionDescription
133027061.007/2009TD09 First edition of the operating instructions,
133402432.006/2010TD09 Complete revision
134594733.001/2014TD09 Revision of several chapters
---4.0---TD09Cancelled
134913145.004/2015TD09 Complete revision with supplement of the MCM
.R./5.107/2015TD09 Changes of the nameplates MCA, MCM, MCS and
separate from three-phase AC motors
Implementation of new layout
motor
MQA
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1
About this documentation
Conventions used
1.2Conventions used
This documentation uses the following conventions to distinguish different types of
information:
Type of informationWritingExample/notes
Spelling of numbers
DecimalNormal spellingExample: 1234
Decimal separatorPointThe decimal point is always used.
Icons
Page reference
Documentation reference
Wildcard
For example: 1234.56
Reference to another page with additional
information
For instance:
Reference to another documentation with
additional information
Example:
Wildcard for options, selection data
16=seepage16
EDKxxx = see EDKxxx documentation
1.3Terminology used
TermDescribes the following
MotorServo motor in the designs according to motor code, 12 to 16
InverterAny servo inverter
Drive systemDrive systems with servo motors and other Lenze drive components
Any frequency inverter
6
Lenze • BA 33.0006 • 5.1
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About this documentation
1.4Notes used
The followingpictographs and signalwords are used in thisdocumentation to indicate
dangers and important information:
Safety instructions
Layout of the safety instructions:
Danger!
(characterises the type and severity of danger)
Note
(describes the danger and gives information about how to prevent
dangerous situations)
Pictograph and signal wordMeaning
Danger of personal injury through dangerous electrical
voltage
Danger!
Danger!
Stop!
Reference to an imminent danger that may result in death
or serious personal injury if the corresponding measures are
not taken.
Danger of personal injury through a general source of
danger
Reference to an imminent danger that may result in death
or serious personal injury if the corresponding measures are
not taken.
Danger of property damage
Reference to a possible danger that may result in property
damage if the corresponding measures are not taken.
1
Notes used
Application notes
Pictograph and signal wordMeaning
Note!
Tip!
Important note to ensure trouble-free operation
Useful tip for easy handling
Reference to another document
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2
2Safetyinstructions
2.1General safety instructions for drive components
Safety instructions
General safety instructions for drive components
Danger!
Disregarding the following basic safety measures may lead to severe
personal injury and damage to material assets!
Note!
Safety-related parameters of safety encoders used can be obtained from
the SISTEMA database, the Lenze AKB (Application Knowledge Base) or
the data sheet of the encoder manufacturer.
• Transport and storage in a dry, low-vibration environment without aggressive
atmosphere; preferably in the packaging provided by the manufacturer.
– Protect against dust and impacts.
– Observe climatic conditions according to the technical data.
• Use load carrying equipment for transport! 21)
• Lenze drive and automation components ...
... must only be used as intended.
... must never be commissioned despite noticeable damage.
... must never be technically changed.
... must never be commissioned in an incompletely mounted state.
... must never be operated without the required covers.
... may have live, moving or rotary parts during and after operation - corresponding
to their type of protection. Surfaces may be hot.
... must not be operated with large vibrations.
... must not be operated in the frequency range of a plant or the drive system.
• All specifications of the corresponding enclosed documentation must be
observed.
This is vital for safe and trouble-free operation and for achieving the specified
product features.
• Only qualified skilled personnel are permitted to work with or on Lenze drive and
automation components.
According to IEC 60364 or CENELEC HD 384, these are persons ...
... whoare familiarwith theinstallation, assembly, commissioning and operationof
the product,
... possess the appropriate qualifications for their work,
... and are acquainted with and can apply all the accident prevent regulations,
directives and laws applicable at the place of use.
8
Lenze • BA 33.0006 • 5.1
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Safety instructions
Application as directed
2.2Application as directed
Low-voltage machines are not household appliances, but are intended as components
that are only applied for re-use for industrial or professional purposes in terms of
IEC/EN 61000-3-2.
They meet the requirements of t he 2014/35/EU Low-Voltage Directive and the
harmonised standards of the IEC/EN 60034 series.
Low-voltage machines with IP23 protection or less are only intended for outdoor use
when applying special protective features.
The integrated brakes must not be used as safety brakes. It cannot be ruled out that
interference factors which cannot be influenced cause a brake torque reduction.
•Drives
– ... must only be operated under the operating conditions and power limits
specified in this documentation.
– ... comply with the protection requirements of the EU Low-Voltage Directive.
2
Any other use shall be deemed inappropriate!
2.3Foreseeable misuse
• Do not operate the motors
– ... in explosion-protected areas
– ... in aggressive environments (acid, gas, vapour, dust, oil)
– ... in water
– ... in radiation environments
Note!
Increased surface and corrosion protection can be achieved by using
adapted coating systems.
2.4Residual hazards
Protection of persons
• The motor surfaces can become very hot. Danger of burns when touching!
– Provide protection against accidental contact, if necessary.
• Highfrequency voltages can be capacitively transferred to the motor housing
through the inverter supply.
– Earth motor housing carefully.
• Danger of unintentional starting or electrical shocks
– Connections must only be made when the equipment is deenergised and the
motor is at standstill.
– Installed brakes are no fail-safe brakes.
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2
Motor protection
• Installed thermal detectors are no full protection for the machine.
Safety instructions
Residual hazards
– If required, limit the maximum current, parameterise the controller such that it
will be switched off after some seconds of operation with I > I
there is the danger of blocking.
, especially if
N
– Installed overload protection does not prevent an overload under any
conditions.
• Installed brakes are no fail-safe brakes.
– The torque may be reduced by disruptive factors that cannot be influenced such
as ingressing oil.
• Fuses are no motor protection.
– Use current-dependent motor protection switches at average operating
frequency.
– Use installed thermal detectors at high operating frequency.
• Too high torques cause a fraction of the motor shaft.
– The maximum torques according to catalogue must not be exceeded.
• Lateral forces from the motor shaft may occur.
– Align shafts of motor and driving machine exactly to each other.
• If deviations from normal operation occur, e.g. increased temperature, noise,
vibration, determine the cause and, if necessary, contact the manufacturer. If in
doubt, switch off the motor.
Fire protection
• Fire hazard
– Prevent contact with flammable substances.
10
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3Productdescri ption
3.1Identification
MC, MQA type
Synchronous servo motors
MCSMCM
MT-MCS-001.isoMT-MCM-002.iso
Asynchronous servo motors
MCAMQA
Product description
Identification
3
MD... type
Synchronous servo motors
MDKS
MT-MCA-001.isoMT-MQA-001.iso
MT-MDFKS-001.iso
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3
Product description
Identification
Motor code
3.1.1Motor code
MCA; MCS; MQA
servo motors
ExampleMCA 21X25 -RS0B0- A38R -ST5
S00N
MeaningTypeMotor code
Product lineM
Type
Design
Motor frame size, motor
length, speed
Speed, angle encoder
Brake
Compact servo motors (if required, with axial
ventilation)
Standard flange formA/FF with throughhole, cyl.
shaft without keyway
Standard flange formA/FF with throughhole, cyl.
shaft with keyway
Standard flange formC/FT with threadedholes, cyl.
shaft without keyway
Standard flange formC/FT with threadedholes, cyl.
shaft with keyway (standard attachment)
Same as version A exceptthat flange is largeF
Same as version B exceptthat flange is largeG
Same as version C except that flange is largeU
Same as version N exceptthat flange is largeV
Foot mounting B3 without keywayO
Foot mounting B3 with keywayP
Shaft 11x23 (MCS06)11
Shaft 14x30 (MCS09; MCA 10)14
Shaft 19x40 (MCS12; MCA13)19
Shaft 24x50 (MCS14; MCA14, 17)24
Shaft 28x60 (MCS19; MCA19)28
Shaft 38x80 (MA22, 22)38
Shaft 55x110 (MA26)55
Concentricity/vibrational severityN, R or V
Direct gearbox attachment: Motor without pinion
for mounting on open gearbox with pinion; flange
for direct gearbox attachment without intermediate
cover, with tapered hollow shaft
Direct gearbox attachment: Motor without pinion
for mounting on open gearbox with pinion; flange
for direct gearbox attachment with intermediate
cover, with tapered hollow shaft
Separate circular connectorsfor power/brake,
encoder/thermal detector, fan
Shared rectangular connector for power, encoder...SQ
Separate terminal boxes for power/brake,
encoder/thermal detector/fan
Separate terminal boxes for power/brake, blower
circular connectors for encoder, thermal detector
Terminal box for power+brake; circular connector
for encoder and thermal detector; circular connector
for blower
Circular connector for power+brake; circular
connector for encoder+thermal detector; terminal
box for fan
IP232
IP54 without shaftsealing ring (except for direct
gearbox attachment)
IP65 with shaft sealing ring6
IP64 (A-flange, without shaft sealing ring) / IP65A
IP54 with shaft sealing ring (A-end bearing, oil-tight)B
IP54 with shaft sealing ring, double lip (A-end
Absolute value encoderAG
Brake and sin-cos absolute value
encoder or SSI absolute value encoder
Brake and resolverBS
ResolverRS
Resolver for safety functionRV
K
BA
056
071
0
1
2
3
3
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3
Product description
Identification
Motor code
Encoder code
ExampleSFC1024-8V-K2
MeaningTypeEncoder code
Product line
Number
VoltageMedium supply voltage
Interface or
signal level
ResolverRS
Resolver for safety functionRV
Incremental encoderIG
Incremental encoder with commutation signalIK
Singleturn absolute value encoderSFC
Multitum absolute value encoderAM
2-pole resolver for servo motors0
2-pole resolver for three-phase AC motors1
Number of pole pairs for resolvers2, 3, 4,...
Number of steps / increments per revolution32, 128,
Standard
TTLT
HTL (for incremental encoders)H
Hiperface (for absolute value encoders)H
EnDatE
sin/cos 1 V
For safety function
TTLU
HTL (for incremental encoders)K
Hiperface (for absolute value encoders)K
EnDatF
sin/cos 1 V
Safety integration level (SIL)1
ss
ss
512,
1024,
2048, ...
5V, 8V,
15V,
24V, ...
S
-
V
2
3
4
Note!
If feedback systems for safety functions are used, the manufacturer’s
documentation must be observed!
16
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3.1.2Nameplate
Asynchronous and synchronous servo motors
Product description
Nameplate
3
L
2
5.5
5.6
5.7
1
4
5.8
5.9
14.2
9
8
10.2/10.3
MCM synchronous servo motors
L
2
5.5
5.6
5.7
1
4
5.8
5.9
14.2
9
8
10.2/10.3
9
5.2
5.10
14.1
9
5.2
5.10
14.1
18
18
15
5.4
16.6
27
12
11
15
5.4
16.6
27
12
11
5.3
22
14.3
MT-SYN-001.des
43
5.3
22
14.3
MT-MCM-00X.des
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3
Product description
Nameplate
Pos.Contents
1Manufacturer / production location
2Type of motor / standard
3Gearbox type
4Motor type
5
6Mounting position / position of the system blocks
7
8
9For feedback / pulse encoder or resolver data see encoder code 16
10
11Bar code
12Motor number
13Information with regard to the operating mode
14
15Applicable conformities, approvals and certificates
16
17Application factor (specified if <1.0) / load capacity
18Year of manufacture / week of manufacture
19UL file number
20Additional customer data
21UL category (e.g. inverter duty motor)
22C86 = motor code for controller parameterisation (code 0086)
23Efficiency class
24Partial load efficiencies for 50Hz operation at a rated power of 50% and 75%
25Range AVoltage tolerance range according to range A as specified by IEC/EN 60034-1
27Permissible ambient temperature (e.g. Ta 40°C)
29Standstill current (ampere locked rotor ALR)
30Weight
31Plug design (number of poles)
43Internal key: QR code
Technical data
5.1Ratio
5.2Rated torque
5.3Rated speed
5.4Rated frequency
5.5Rated voltage
5.6Rated current
5.7Maximum current
5.8Rated power [kW]
5.9Rated power [HP]
5.10Continuous standstill torque
Lubricant details
7.1 Lubricant amount
7.2 Lubricant type
Brake data
8.1Type
8.2AC/DC brake voltage
8.3Braking torque, electrical power input
Production data
10.1Order number
10.2Material number
10.3Serial number
Additional motor specifications
14.1Temperature class
14.2Enclosure
14.3Motor protection
Rated data for various frequencies
16.1Hz=frequency
16.2kW=motor power
16.3rpm=motor speed
16.4V=motor voltage
16.5A=motor current
16.6
16.7=motor efficiency: at a rated power of 100%
cos =motor power factor for MA
Uin[V] =induced voltage for MC
18
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Technical data
General data and operating conditions
4Technicaldata
4.1General data and operating conditions
General data
Conformity
CE2006/95/ECLow-Voltage Directive
Approvals
ULANSI/UL 1004-1
CSACSA-C22.2 No. 100 Motors and Generators
EAC
Protection of persons and devices
EnclosureIEC/EN 60034-5
Temperature classF (155 °C)
Permissible voltageAs specified by limiting curve A of the pulse voltage from
EMC
Noise emission
Noise immunity
ANSI/UL 1004-6
(TR CU 020/2011)
(TR CU 004/2011)
IEC/EN 60034-1
IEC/EN 61800-3Depending on the controller, see documentation for the
Rotating Electrical Machines
Servo and Stepper Motors
Electromagnetic
compatibility of technical
means
On safety of low voltage
equipment
See nameplate
Degrees of protection only apply to horizontal installation
All unused connectors must be closed with protection
covers or blanking plugs.
Exceedance of the temperature limit weakens or destroys
the insulation
IEC / TS 60034-25:2007 (corresponds to IVIC
C/B/B@500V)
controller.
Eurasian Conformity
TR CU: Technical Regulation of
Customs Union
Eurasian Conformity
TR CU: Technical Regulation of
Customs Union
4
Operating conditions
Ambient conditions
Climatic
TransportIEC/EN 60721-3-22K3 (-20 °C ... +70 °C)
StorageIEC/EN 60721-3-1
OperationIEC/EN 60721-3-3
Site altitude< 1000 m amsl - without power reduction
HumidityRelative humidity 85 %, without condensation
Electrical
The motor connection type depends on the controller
Length of the motor cable
Length of cable for speed feedback
Mechanical
IEC/EN60721-3-33M6
1K3 (-20 °C ... +60 °C)< 3 months
1K3 (-20 °C ... +40 °C)> 3 months
3K3 (-20 °C ... +40 °C) MC
A, MCS,
MDKS
3K3 (-15 °C ... +40 °C) MC
M, MQA
3K3 (-10 °C ... +40 °C)With brake
3K3 (-15 °C ... +40 °C)With blower
> +40 °CWith power reduction, see
> 1000 m amsl < 4000m amsl with power reduction, see
catalogue
See inverter instructions
Without brake
catalogue
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4
Technical data
General data and operating conditions
Setting the switching frequency to the rated motor data
4.1.1Setting the switching frequency to the rated motor data
The rated data are valid for operation on an inverter with a switching frequency of at
least 8 kHz. If operated at a switching frequency of f
=4 kHz, the following
ch
consequences must be observed.
Motor typeConsequences
MQA 20, 22, 26
MCA 20, 22, 26
MCM, MCS
MCA 10, 13, 14, 17, 19, 21
MDKS
At fch= 4 kHz, the motor continuously reaches only approx. 95 % of
its rated torque.
Increased noise emission
All published rated data remain valid if fch=4kHz.
20
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Mechanical installation
5Mechanicalinstallation
5.1Important notes
Danger!
Some of the motors mounted to the gearboxes are equipped with
transport aids. They are only intended for the mounting/dismounting of
the motor to the gearbox and must not be used for the entire geared
motor!
• Only move the drive with means of transport or hoists that have sufficient
load-bearing capacity.
• Ensure safe fixing.
• Avoid shocks!
5.2Preparation
5
Important notes
Remove thecorrosion protection fromthe shaft ends and flanges.If necessary, remove
dirt using standard cleaning solvents.
Stop!
Bearings or seals must not come into contact with the solvent - material
damages.
After a long storage period (> 1 year) you have to check whether moisture has
entered the motor. For this purpose, measure the insulation resistance (measuring
voltage 500 V
5.3Assembly of built-on accessories
Follow these instructions carefully. Please note that the warranty and product liability
will become void in the event of impermissible alterations or modifications to the
motors.
• Mount the transmission elements:
– Shocks and impacts must be avoided! They could destroy the motor.
– For mounting always use the centre bore in the motor shaft as specified by DIN
332-DR-M...
– Tolerances of the shaft ends:
50 mm: ISO k6, > 50 mm: ISO m6.
). In case of values 1kper volt of rated voltage, dry the winding.
DC
• Only use an extractor for the disassembly.
• When using belts for torque/power transmission:
– Tension the belts in a controlled manner.
– Provide protection against accidental contact! During operation, surface
temperatures of up to 140°C are possible.
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5
5.3.1Installation
Important notes
• The mounting surface must be dimensioned for the design, weight and torque of
• The foot and flange faces must rest flat on the mounting surface.
Mechanical installation
Assembly of built-on accessories
Installation
the motor.
– Incorrect motor alignment reduces the service life of the roller bearings and
transmission elements.
Impacts on shafts can cause bearing damage.
• Do not exceed the permissible range of ambient operating temperature ( 19).
• Fasten the motor securely.
• Ensure that the ventilation is not impeded. The exhaust air, also the exhaust air of
other machines next to the drive system, must not be taken in immediately.
• During operation, surfaces are hot, up to 140 °C! Ensure that guard preventing
accidental contact is in place!
Note!
From the air inlet to other component parts, a minimum distance of 10%
of the outer diameter of the fan cover must be complied with!
Ensure an even surface, solid foot or flange mounting and exact alignment if a direct
clutch is connected. Avoid resonances with the rotational frequency and double
mains frequency which may be caused during assembly. With an additional support
on the N-end side in the case of flange-mounted motors (in particular for MQA and
great MCA), vibrations that may occur can be reduced. Bracing of the motor by the
additional support must be reliably avoided.
Only mount or remove transmission elements using appropriate means. In order to
facilitate handling, heat them beforehand. Cover belt pulleys and clutches witha touch
guard.
Stop!
Ensure a correct belt tension!
The machines are halfkey balanced. The clutch must be halfkey balanced, too. The
visible jutting out part of the key must be removed.
Designs with shaft end at the bottom must be protected with a cover at the N-end,
preventing the ingress of foreign particles into the fan.
22
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Mechanical installation
Holding brake (option)
5.4Holding brake (option)
Important notes
As an option, the motors can be fitted with a brake. The installation of brakes (in or on
the motor) increases the length of the motor.
Note!
The brakes used are not fail-safe because interference factors which
cannot be influenced (e.g. oil ingress) may lead to a reduction in torque.
The brakes are used as holding brakes and serve to hold the axes at standstill or in the
deenergised state.
Emergency stops at higher speeds are possible but high switching energy increases
wear on the friction surfaces and the hub, 26).
The spring-applied brakes work on the basis of the closed-circuit principle, i.e. the brake
is closed in the deenergised state. The brakes for DC supply can be fed with a
bridge-rectified DC voltage (bridge rectifier) or with a smoothed DC voltage. The
permissible voltage tolerance is ±10 %.
5
Installation
If longmotor supply cables are used,pay attention to the ohmic voltage drop alongthe
cable and compensate for it with a higher voltage at the input end of the cable.
The following applies to Lenze system cables:
U*= UB+
0.08 Ω
m
⋅ L ⋅ I
U* [V]Resulting supply voltage
B
UB[V]Rated voltage of the brake
l[m]Cable length
IB[A]Rated current of the brake
Stop!
If no suitable voltage (incorrect value, incorrect polarity) is applied to the
brake, the brake will be applied and can be overheated and destroyed by
the motor continuing to rotate.
The shortest operating times of the brakes are achieved by DC switching of thevoltage
and an external suppressor circuit (varistor or spark suppressor). Without suppressor
circuit, the operating times may increase. A varistor/spark suppressor limits the
breakingvoltage peaks.Itmust beensured thatthe power limitofthe s uppressor circuit
is not exceeded. This limitdepends onthe brakecurrent, brakevoltage, disengagement
time and the switching operations per time unit.
Furthermore the suppressor circuit is necessary for interference suppression and for
increasing the servicelife of therelay contacts(external, not integratedinto the motor).
Please refer to the catalogue for servo motors for detailed information
about holding brakes.
Note!
The brake cannot be readjusted. When the wear limit is reached, the
brake has to be replaced.
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5
5.4.1Permanent magnet holding brakes
These brakesare used as holding brakesand serve to hold theaxes without backlashat
standstill or in the deenergised state.
• Inherent to the design, the rated torque for permanent magnet
holding brakes is solely classified as holding torque at standstill. When
braking from full motor speed,
e.g. in the case of emergency stops, the braking torque is substantially
reduced.
• This holding brake is only designed for a limited number of emergency
stops. Utilisation as a working brake, e.g. to decelerate a load, is not
permissible.
When activating the brake, it must be ensured that thebrake is released or engaged at
zero speed to avoid unnecessary and rapid wear of the brake.
When used solely as holding brakes, the brakes are virtually wear free on their
friction surfaces. If the max. permissible switching energy per emergency stop (see
catalogue) is not exceeded, at least 2000 emergency stop functions from a speed of
3000 rpm are possible.
W = ½ ⋅ J
The holding torques specified in the catalogue only apply when the motor is at
standstill. In the case of a slipping brake, the dynamic braking torque always applies
which depends on the speed.
tot
⋅ ω
2
J
[kgm2]Total moment of inertia
tot
[1/s]Angular velocity =2n/60, n= speed [rpm]
W[J]Energy
Note!
The permanent magnet holding brakes are maintenance-free and cannot
be adjusted. In the event of wear, e.g. by emergency stops, the brakes
must be replaced.
These brakes work on the basis of the closed-circuit principle, i.e. the brake is closed in
the deenergised state.
Brakes with a rated voltage of DC 24 V are designed for smoothed DC voltages with a
ripple of<1 %. It must be ensuredthat the connector on themotor side issupplied with
theminimum voltageof DC24 V-10 %. Ifnecessary, thevoltage drop inthecable should
also be considered. If the maximum voltage DC 24 V + 5 % is exceeded, the brake can
close again. Supplying the brake with bridge-rectified DC voltage (bridge rectifier
without additional smoothing) or a DC voltage with a ripple of >1 % can lead to a
malfunctioning of the brake or an increase in the engagement and disengagement
times.
Brakes with a rated voltageof DC205 V aredesigned forbridge-rectified DC voltage, i.e.
for supply via a bridge rectifier from the 230 V mains (half-wave rectifiers are not
permissible). Supplying the brake with smoothed DC voltage can lead to
malfunctioning or an increase in the engagement and disengagement times. With
regardto the minimumandmaximum voltages, thesame conditionsapplyasfor brakes
with 24 V, i.e. the permissible voltage tolerance is 205 V DC +5 %, -10 %.
24
Lenze • BA 33.0006 • 5.1
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Mechanical installation
Holding brake (option)
Permanent magnet holding brakes
Wear of permanent magnet brakes
If applied asdirected (application as holding brakes), the permanent magnet brakes of
the servo motors are wear free and intended forlong operating times. The wear on the
friction lining is due to e.g. emergency stops.
The table below describes the different reasons for wear and their impact on the
components of the permanent magnet brakes.
ComponentEffectsInfluencing factorsCause
Friction lining /
friction surface at
thearmatureplate
and external pole
Wear on the friction lining Applied friction energy
springs
Number of switching
operations of the brake
Braking during operation
(impermissible, holding
brakes!)
Emergency stops
Overlapping wear when
the drive starts and stops
Active braking by the drive
motor with the help of the
brake (quick stop)
Axial duty cycle of the
springs
temperatures
5
Stop!
In case of wear above the maximum air gap ( brake operating
instructions), application of the brake cannot be ensured. In this case, no
braking process is carried out.
These brakesare used as holding brakesand serve to hold theaxes without backlashat
standstill or in the deenergised state.
For permissible operating speeds and characteristics, please see the motor catalogue
applicable in each case. Emergency stops at higher speeds are possible, but high
switching energy increases wear on the friction surfaces and the hub.
Stop!
The friction surfaces must always be free from oil and grease because
even small amounts of grease or oil will considerably reduce the braking
torque.
The formula below provides a simplified way to calculate friction energy per switching
cycle which must not exceed the limit value for emergency stops that depends on the
operating frequency (motor catalogue; Lenze drive solutions: formulas,
dimensioning, and tables).
Depending on the operating conditions and possible heat dissipation, surface
temperatures can be up to 130 °C.
More detailed information on the used brakes is provided in the
corresponding catalogues.
Wear on spring-applied brakes
Spring-applied brakesare wear-resistant and designed forlong maintenanceintervals,
23).
However,the friction lining,theteeth betweenthe brakerotorand thehub,and also the
braking mechanism are naturally subject to function-related wear which depends on
the application case (seetable). Inorder toensure safeand problem-freeoperation, the
brake must therefore be checked and maintained regularly and, if necessary, replaced
(see brake maintenance and inspection).
The following table describes the different causes of wear and their effect on the
components of the spring-applied brake. In order to calculate the useful lifeof therotor
and brake and determine the maintenance intervals to be prescribed, the relevant
influencing factors must be quantified. The most important factors are the applied
friction energy, the starting speed of braking and the switching frequency. If several of
the indicated causes of wear on the friction lining occur in an application, their effects
are to be added together.
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Lenze • BA 33.0006 • 5.1
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Mechanical installation
ComponentEffectInfluencing factorsCause
Friction liningWear on the friction lining Applied friction energy
Number of start-stop
cycles
Armature plate and
flange
Teeth of the brake
rotor
Armature plate
bracket
SpringsFatigue failure of the
Running-in of armature
plate and flange
Teeth wear (primarily at
the rotor end)
Armature plate, cap screws
and bolts are deflected
springs
Applied friction energyFriction between the brake
Number of start-stop
cycles,
Level of the braking
torque,
Dynamics of the
application,
Speed fins in operation
Number of start-stop
cycles,
Level of braking torque
Number of switching
operations of the brake
Braking during operation
(impermissible, holding
brakes!)
Emergency stops
Overlapping wear when
the drive starts and stops
Active braking by the drive
motor with the help of the
brake (quick stop)
Starting wear if motor is
mounted in a position
with the shaft vertical,
even if the brake is open
lining and the armature
plateorflangee.g.during
emergency braking or
service brake operation
Relative movement and
impacts between brake
rotor and brake hub
Load changes and impacts
due to reversal error
during interaction
between armature plate,
cap screws and guide bolts
Axial load cycle and
shearing stress on the
springs due to radial
reversing error of the
armature plate
5
Holding brake (option)
Spring-applied holding brakes
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6
6Electricalinstallation
6.1Important notes
Electrical installation
Important notes
Danger!
Hazardous voltage on the power connections even when disconnected
from mains: residual voltage >60 V!
Before working on the power connections, always disconnect the drive
component from the mains and wait until the motor is at standstill.
Verify safe isolation from supply!
Stop!
Electrical connections must be carried out in accordance with the
national and regional regulations!
Observe tolerances according to IEC/EN 60034-1:
– Voltage±5%
– Frequency ±2 %
– Wave form, symmetry (increases heating and affects electromagnetic
compatibility)
Observe noteson wiring,information onthe nameplate, and the connection scheme in
the terminal box.
• The connection must ensure a continuous and safe electrical supply, i.e.
– no loose wire ends,
– use assigned cable end fittings,
– ensure good electrical conductivity of the contact (remove residual lacquer) if an
(additional) PE connection on the motor housing is used),
– establish a safe PE conductor connection,
– tighten the plugin connector to the limit stop.
– After the connection is completed, make sure that all connections on the
terminal board are firmly tightened.
• The smallest air gaps between uncoated, live parts and against earth must not fall
below the following values.
Minimum requirements for basic
insulation according to IEC/EN
60664-1 (CE)
3.87 mm
• The terminal box has to be free of foreign bodies, dirt, and humidity.
• All unused cable entries and the box itself must be sealed against dust and water.
Higher requirements for UL
design
6.4 mm< 178 mm
9.5 mm> 178 mm
Motor diameter
28
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Electrical installation
EMC-compliant wiring
6.2EMC-compliant wiring
The EMC-compliant wiring of the motors is described in detail in the Operating
Instructions for the Lenze controllers.
• Use of metal EMC cable glands with shield connection.
• Connect the shielding to the motor and to the device.
6.3Plug connectors
The connectors comply with vibration and shock class 3M6 as specified in
IEC/EN60721-3-3. This applies to all power, encoder and fan connector boxes.
Stop!
• Cable connectors with screwed connection:
– Always use with the O-rings supplied.
• Cable connectors with a SpeedTec bayonet lock:
– Remove O-ring and dispose of it.
6
When connecting the cable connector tothe motor connector, make sure that theaids
toorientation (pos. 1)arefacingeach other. Onlythentrouble-free operation isensured.
• Tighten the box nut of the cable connectors!
• Never disconnect cable connectors whilst voltage is being applied! Otherwise the
connector may be destroyed! Inhibit the inverter before disconnecting the plugs!
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6
Electrical installation
Plug connectors
Power connections / holding brake
6.3.1Power connections / holding brake
6-pole (external view of poles)
ContactNameMeaningM23
1) Only for versions with electronic nameplate ENP.
Supply + / + VCC ENP
Track A
Track A inverse
Track B
Track B inverse
Data EnDat interface
Data inverse EnDat interface
Clock pulse EnDat interface
Clock pulse inverse EnDat interface
Thermal detector KTY
Electrical installation
6
Terminal box
Feedback system
1)
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Safety engineering7
7Safetyengineering
Motor-encoder combinations
Drive systems with Servo Drives 9400 and safety module SM301 provide
speed-dependent safety functions for safe speed monitoring and/or safe
relative-positionmonitoring. Observe permissiblemotor-encodercombinationsduring
configuration.
• Possible speed-dependent safety functions with safety module SM301:
• Permissible motor-encoder combinations for these functions:
Synchronous
servo motors
MCS 06 ... 19
MDXKS 56 / 71
Asynchronous
servo motors
MCA 10 ... 26
MQA 20 ... 26
Sin/cos absolute value,
single-turn
Sin/cos absolute value,
multi-turn
ResolverRV03PL e / SIL 3
Sin/cos incrementalIG1024-5V-V3
ResolverRV03
Encoder
TypeProduct key
AS1024-8V-K2
AM1024-8V-K2
Encoder
TypeProduct key
Safe speed monitoring with
Single-encoder
Two-encoder concept Up to PL e / SIL 3
Safe speed monitoring with
Single-encoder
Two-encoder concept Up to PL e / SIL 3
SM301
concept
SM301
concept
PL d / SIL 2
PL e / SIL 3
A ”two-encoder concept” includes e.g. a resolver as motor encoder and, at the same
time, an absolute value encoder (sin/cos), an incremental encoder (TTL), or digital
encoder (SSI/bus) as position encoder on the machine.
In the case of the ”2-encoder concept”, the achievable risk mitigation (PL/SIL) depends
on the suitability of the encoders used.
Note!
If feedback systems for safety functions are used, the manufacturer’s
documentation must be observed!
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Commissioning and operation
8Commissioning andoperation
8.1Important notes
For trial run without output elements, lock the featherkey. Do not deactivate the
protective devices, not even in a trial run.
Check the correct operation of the brake before commissioning motors with brakes.
8.2Before switching on
Note!
Before switch-on, you must ensure that the motor starts with the
intended direction of rotation.
Lenze motors rotate CW (looking at the driven shaft) if a clockwise
three-phase field L1 U1, L2 V1, L3 W1 is applied.
8
Important notes
Before initial commissioning, before commissioning after an extended standstill
period, or before commissioning after an overhaul of the motor, the following must be
checked:
• Measure the insulation resistance, in case of values 1kper volt of rated
voltage, dry the winding.
• Have all screwed connections of the mechanical and electrical parts been firmly
tightened?
• Is the unrestricted supply and removal of cooling air ensured?
• Has the PE conductor been connected correctly?
• Have the protective devices against overheating (temperature sensor evaluation)
been activated?
• Is the controller correctly parameterised for the motor?
( Controller operating instructions)
• Are the electrical connections o.k.?
• Does the motor connection have the correct phase sequence?
• Are rotating parts and surfaces which can become very hot protected against
accidental contact?
• Is the contact of good electrical conductivity if a PE connection on the motor
housing is used?
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8
8.3Functional test
• Check all functions of the drive after commissioning:
• Direction of rotation of the motor
• Torque behaviour and current consumption
• Function of the feedback system
8.4During operation
Commissioning and operation
Functional test
– Direction of rotation in the disengaged state (see chapter ”Electrical
connection”).
Stop!
• Fire hazard! Do not clean or spray motors with flammable detergents
or solvents.
• Avoid overheating! Deposits on the drives impede the heat dissipation
required and have to be removed regularly.
Danger!
During operation, motor surfaces must not be touched. According to the
operating status, the surface temperature for motors can be up to 140°C.
For the protection against burn injuries, provide protection against
contact, if necessary. Observe coolingoff times!
During operation, carry out inspections on a regular basis. Pay special attention to:
• Unusual noises
• Oil spots on drive end or leakages
• Irregular running
• Increased vibration
• Loose fixing elements
• Condition of electrical cables
• Speed variations
• Impeded heat dissipation
– Deposits on the drive system and in the cooling channels
– Pollution of the air filter
In case of irregularities or faults: 45.
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Lenze • BA 33.0006 • 5.1
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9Maintenance/repair
9.1Important notes
Danger!
Hazardous voltage on the power connections even when disconnected
from mains: residual voltage >60 V!
Before working on the power connections, always disconnect the drive
component from the mains and wait until the motor is at standstill.
Verify safe isolation from supply!
Stop!
Repair work or replacement of defective safety encoders must only be
carried out by Lenze service personnel!
Shaft sealing rings and roller bearings have a limited service life.
Maintenance/repair
Important notes
9
Regrease bearingswith relubricating devices while thelowvoltage machine is running.
Only use the grease recommended by the manufacturer.
If thegrease drain holes are sealedwith aplug, (IP54 driveend; IP23 drive and nondrive
end), remove plug before commissioning. Seal bore holes with grease.
9.2Maintenance intervals
Inspections
• If the machine is exposed to dirt, clean the air channels regularly.
9.2.1Motor
• Only the bearings and shaft sealing rings become worn.
– Check bearings for noise (after approx. 15,000 h at the latest).
• In order to prevent overheating, remove dirt deposits on the drives regularly.
• We recommend carrying out an inspection after the first 50 operating hours. In
this way, you can detect and correct any irregularities or faults at an early stage.
9.2.2Safety encoder
After a service life of 10 years, an inspection of the metal elastomer torque plate is
required for the AS1024-8V-K, AS1024-8V-K2; AM1024-8V-K, and AM1024-8V-K2
encoders. Ifno replacement isrequired, an inspection interval ofmax. 5 yearshas to be
observed.
Stop!
Repair work or replacement of defective safety encoders must only be
carried out by Lenze service personnel!
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9
9.2.3Holding brake
The brakes need to be checked on a regular basis to ensure safe and trouble-free
operation.
The necessary maintenance intervals primarily depend onthe stressto whichthe brake
is subjected in an application. When a maintenance interval is being calculated, all
causes of wearmust be takeninto account (seenotes ”Wear onspring-applied brakes”).
In the case of brakes which are subjected to low levels of stress, e.g. holdingbrakes with
emergencystop function, regularinspections atafixedtime intervalare recommended.
In order toreduce theamount of workinvolved inmaintenance, perform theinspection
at the same time as other maintenance work carried out cyclically on the machine if
possible.
If thebrakes are not properly serviced,operating faults, productionoutages ordamage
to machinery can occur. A maintenance concept adapted to the operating conditions
andthe stressestowhich thebrakesare subjected musttherefore be drawnupfor every
application. For brakes, the maintenance intervals and servicing work listed in the
following table are necessary.
Maintenance/repair
Maintenance operations
Holding brake
Maintenance interval for holding brake with
emergency stop
At least every 2 years
After 1 million cycles at the latest
Shorter intervals in the case of frequent emergency
stops!
The brakesof theMCA, MCM, MCS, MQA, andMDKS motorscannot be accessed from
theoutside! (Maintenanceworkon the brakesmust be carriedout by LenzeServicestaff
only!)
9.3Maintenance operations
Maintenance work
Inspection of the brake integrated in the motor:
• Check ventilation function and
activation/deactivation
Stop!
• Make sure that no foreign bodies can enter the inside of the motor!
• Do not remove plugs when voltage is being applied!
Danger!
• Only work on the drive system when it is in a deenergised state!
• Hot motor surfaces of up to 150 °C. Observe cooling times!
• Remove loads acting on motors or secure loads acting on the drive!
9.3.1Blower
If themotor is equipped with a blower, this blower must becleaned or even replaced at
regular intervals depending on the amount of dust (if necessary, daily).
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Lenze • BA 33.0006 • 5.1
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Maintenance/repair
Maintenance operations
Fan with dust protection filter
9.3.2Fan with dust protection filter
For the motors, dry filters are used.
Note!
The dust protection filter is mounted to the fan unit. Depending on the
amount of dust, the filter must be cleaned completely or replaced at
regular intervals!
Polluted filterssubstantially reduce the amount ofcooling air. This brings abouthigher
winding temperatures, reduces the filters’ service life and may cause damage to the
filters.
When replacing the filters it must be ensured that all covers as well as the filter are fit
tightly, therefore preventingthe occurrenceof leakages fora damagingingress of dust!
Inthecaseofmoist dust,new filtermats must bemounted. Atthe latestwhen the filter
is replaced for the first time it should be checked that the interiorof the motor is clean.
9
9.3.3Motors with bearing relubricating devices
Under normal operating conditions, the bearings used have a service life of approx.
20.000 operating hours. Ex works the bearings are filled with a high-quality,
heat-resistant roller bearing grease. (The permissible operating temperature range of
the grease used is between -25°C and +120°C).
Relubrication period, type of grease and amount of grease are stated on an additional
indicating label on the motor.
Manufacturer designation
Designation of grease type according to
DIN51502
Relubrication period
Amount of grease
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9
Maintenance/repair
Maintenance operations
Motor plug connection assignment
9.3.4Motor plug connection assignment
This motor-plug assignment is a rough selection of possible mechanical combinations.
Note!
When making your selection, the motor data and permissible currents of
the cables according to the system cable system manual must be
observed.
Further information is provided in the system cables system manual at:
• We recommend having all repairs carried out by the Lenze customer service.
• In case of version with safety encoder, observe chapter 9.2.2!
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Lenze • BA 33.0006 • 5.1
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Troubleshooting and fault elimination10
10Troubleshootingand faultelimination
If faults occur during operation of the drive system:
• First check the possible causes of malfunction according to the following table.
Note!
Also observe the corresponding chapters in the operating instructions for
the other components of the drive system.
If the fault cannot be remedied using one of the listed measures, please contact the
Lenze Service.
Danger!
• Only work on the drive system when it is in a deenergised state!
• Hot motor surfaces of up to 150 °C. Observe cooling times!
• Remove loads acting on motors or secure loads acting on the drive!
FaultCauseRemedy
Motor too hot
Can only be evaluated by
measuring the surface
temperature:
• Non-ventilated motors
140 °C
• Externally ventilated or
self-ventilated motors
110 °C
Motor suddenly stops and
does not restart
Incorrect direction of
rotation of the motor,
correct display on the
controller
Motor rotates normally but
does not reach the expected
torque
Motor turns in one direction
at maximum speed in an
uncontrolled manner
Motor rotates slowly in one
direction and cannot be
influenced by the controller
Irregular running
Vibrations
Running noises
Surface temperature > 140°C Overload of the drive
Insufficient cooling air, blocked air
ducts.
Preheated cooling airEnsure a sufficient supply of fresh cooling air
Overload, with normal mains voltage
the current is too high and the speed
too low
Rated operating mode exceeded (S1 to
S8 IEC/EN 60034-1)
Loose contact in supply cable
(temporary single-phase operation!)
Fuse has blown (single-phasing!)Replace fuse
Overload of the drive
Heat dissipation impeded by depositsClean surface and cooling fins of the drives
Overload monitoring of the inverter is
activated
Motor cable polarity is reversed
Polarity of encoder cable reversed
Motor cable interchanged cyclically
Not all motor phases connected
Motor cable interchanged cyclicallyCheck motor connector and, if necessary, correct
Polarity of encoder cable reversedCheck encoder connection and, if necessary, correct
Polarity of motor cable and encoder
cable reversed
Insufficient shielding of motor or
resolver cable
Drive controller gain too largeAdjust the gains of the controllers (see Drive controller operating
Insufficiently balanced coupling
elements or machine
Inadequate alignment of drive trainRealign machine unit, check foundation if necessary
Loose fixing screwsCheck and tighten screw connections
Foreign particles inside the motor
Bearing damage
Heat dissipation impeded by depositsClean surface and cooling fins of the drives
Ensure unimpeded circulation of cooling air
Use larger drive (determined by power measurement)
Adjust rated operating mode to the specified operating conditions.
Determination of correct drive by expert or Lenze customer service
Tighten loose contact
Check load and, if necessary, reduce by means of longer ramp-up
times
Check winding temperature
Check controller settings
Reduce load caused by longer acceleration times
Check the polarity and correct
Connect the phases at the motor cable connection correctly
Check the polarity and correct
Checking shielding and earth connection
instructions)
Rebalance
Repair by manufacturer if necessary
Check load and, if necessary, reduce by means of longer ramp-up
times