Bosch Rexroth MKE035B-144 Technical manual

R
exroth Indra
C
ontrol V
C
P 20
Industrial
Hydraulics
Electric Drives
and Controls
Linear Motion and
Assembly Technologies Pneumatics
Service
Automation
Mobile
Hydraulics
Rexroth MKE synchronous motors
for potentially hazardous areas
R911274804
Edition 01
Project Planning Manual

MKE
About this dokumentation DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97
MKE Digital AC Motors for potentially-explosive areas
Project Planning Manual
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44
• Drawing number: 209-0078-4301-00
Reference
This electonic document is based on the hardcopy document with docu-
ment desig.: DOK-MOTOR*-MKE*******-PRJ1-EN-P
This document assists in
• familiarization with MKE AC motors
• mechanical integration into the machine
• planning of the electrical connections
• connecting the motor
• ordering or identifying a motor
• determining the required motor cables and connectors
Document designations of previous
editions Status Comments
DOK-MOTOR*-MKE*******-PRJ1-EN-P 06.97 1st edition
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 06.97 1 st E- Dok
INDRAMAT GmbH, 1997
Copying this document, and giving it to others and the use or communi-
cation of the contents thereof without express authority are forbidden.
Offenders are liable for the payment of damages. All rights are reserved
in the event of the grant of a patent or the registration of a utility model or
design (DIN 34-1).
The electronic documentation (E-Doc) may be copied as often as needed
if such are to be used by the customer for the purpose intended.
All rights are reserved with respect to the contents of this documentation
and the availability of the product.
INDRAMAT GmbH •Bgm.-Dr.-Nebel-Str. 2 •D-97816 Lohr a. Main
Telefon [phone] •Tx 689421 •Fax [phone]
Abt. ENS (JW)
Title
type of documentation
Document code
Internal file reference
The purpose of the
documentation:
Editing sequence
Copyright
Validity
Published by

MKE
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97 Contents I
Contents
1 Introduction to MKE digital AC motors 1-1
1.1 General features..................................................................................................................................1-1
1.2 Versions............................................................................................................................................... 1-3
1.3 Motor feedback....................................................................................................................................1-3
2 Mechanical integration into the machine 2-1
2.1 Using the drive in potentially explosive areas......................................................................................2-1
2.2 Conditions of Use.................................................................................................................................2-2
Maximum installation elevation and ambient temperature............................................................2-2
Maximum vibration and shock requirements ................................................................................2-3
Primary coat and housing finish....................................................................................................2-4
2.3 Type of construction and mounting orientation....................................................................................2-5
2.4 Drive shaft............................................................................................................................................2-5
Available versions......................................................................................................................... 2-5
Shaft loads.................................................................................................................................... 2-5
2.5 Holding brake.......................................................................................................................................2-8
2.6 Connection variants and cable output directions.................................................................................2-9
2.7 Speed and Torque............................................................................................................................. 2-10
3 Electrical connections 3-1
3.1 Overview of connections......................................................................................................................3-1
3.2 Connections for motors with terminal boxes........................................................................................3-2
Terminal diagram.......................................................................................................................... 3-2
Thermal cutout connection............................................................................................................3-3
Power cable .................................................................................................................................. 3-3
Feedback cable.............................................................................................................................3-5
Technical data of the power and feedback cables........................................................................3-6
Minimum temperature resistance of the connecting leads ...........................................................3-7
Individual parts..............................................................................................................................3-7
4 MKE 035 4-1
4.1 Technical data......................................................................................................................................4-1
4.2 Speed/torque characteristics ...............................................................................................................4-2
4.3 Determining maximum shaft load ........................................................................................................4-3
4.4 Dimensions..........................................................................................................................................4-4
4.5 Available versions and type codes.......................................................................................................4-5
5 MKE 045 5-1
5.1 Technical data......................................................................................................................................5-1

MKE
IIContents DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97
5.2 Speed/torque characteristics ...............................................................................................................5-2
5.3 Determining maximum shaft load ........................................................................................................5-3
5.4 Dimensions..........................................................................................................................................5-4
5.5 Available versions and type codes.......................................................................................................5-5
6 MKE 096 6-1
6.1 Technical data......................................................................................................................................6-1
6.2 Speed/torque characteristics ...............................................................................................................6-2
6.3 Determining maximum shaft load ........................................................................................................6-3
6.4 Dimensions..........................................................................................................................................6-4
6.5 Available versions and type codes.......................................................................................................6-5
7 Condition at delivery 7-1
7.1 General information .............................................................................................................................7-1
7.2 Removing the bands............................................................................................................................7-1
7.3 Shipping papers...................................................................................................................................7-1
8 Identifying the merchandise 8-1
8.1 Delivery slip..........................................................................................................................................8-1
8.2 Barcode sticker....................................................................................................................................8-1
8.3 Type plate............................................................................................................................................8-2
9 Storage , Transport and Handling 9-1
9.1 Notes on the packaging....................................................................................................................... 9-1
9.2 Storage ................................................................................................................................................9-1
9.3 Transport and Handling .......................................................................................................................9-2
10 Safety Guidelines for electrical drives 10-1
10.1 General information .........................................................................................................................10-1
10.2 Note on protection against contact with live parts............................................................................10-1
10.3 Notes on "safely-isolated low voltages.........................................................................................10-2
10.4 Notes on handling and mounting.....................................................................................................10-3
10.5 Notes on protection against dangerous movements .......................................................................10-3
11 Mounting and Installation 11-1
11.1 Qualified personnel..........................................................................................................................11-1
11.2 General notes on mounting..............................................................................................................11-1
11.3 Mounting the motor..........................................................................................................................11-1
11.4 Connecting the motor.......................................................................................................................11-2
Connecting guidelines for MKE 035 and MKE 045.....................................................................11-3
Connecting guidelines for MKE 096............................................................................................11-5
EExd cable screwed joints..........................................................................................................11-7
11.5 Refinishing the holding brake...........................................................................................................11-8
12 Service Notes 12-1
12.1 Changing the battery........................................................................................................................12-1
12.2 Maintenance work............................................................................................................................12-2

MKE
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97 Introduction to MKE digital AC motors III
12.3 Contacting Customer Service.......................................................................................................... 12-2
13 Index 13-1

MKE
IVContents DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97

MKE
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97 Introduction to MKE digital AC motors 1-1
1 Introduction to MKE digital AC motors
1.1 General features
In conjunction with digital intelligent INDRAMAT drive controllers, MKE
digital AC motors create cost-effective drive systems with a broad range
of functionalities for use in potentially explosive areas.
Motors with the following continuous standstill torques and nominal
speeds are available:
Fig. 1-1: Continuous torque at standstill of the available MKE motors
Applications
Overview of performance

MKE
1-2 Introduction to MKE digital AC motors DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97
The salient advantages of MKE motors are as follows:
• motors designed with „pressure-resistant housing“ as per EN 50014 ff
• extreme operating reliability
• maintenance-free operation (due to the brushless design and use of
lifetime lubricated bearings)
• implementation even under adverse environmental conditions (due to
the completely sealed motor design with protection category IP 65)
• overload protection (accomplished with motor temperature monitoring)
• high power data
• high dynamics (as a result of favorable power to weight ratio)
• high overload capacities (due to favorable heat conduction from the
stator winding to the outside wall of the motor)
• peak torque which can be used over a broad rotational speed range
(accomplished with electronic commutation)
• continuous start-stop operations with high repetitive frequencies is
possible (accomplished with electronic commutation)
• easy mounting to the machine (with a flange as per DIN 42948)
• any mounting orientation
• pinions and belt pulleys can be directly mounted (the design of the be-
aring shaft accomodates high radial loads)
• simple cabling (accomplished with ready-made cables available in va-
rious designs)
• simple and rapid commissioning (as a result of data storage capabili-
ties in the motor feedback)
MKE motors are permanent magnet-excited motors with electronic com-
mutation. Special magnetic materials perwith a design with low inertia.
The following illustrates the principle structure of MKE motors.
Fig. 1-2: The structure of MKE motors
Advantages
Structure and components

MKE
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97 Introduction to MKE digital AC motors 1-3
MKE motors are intended for use with the following drive controllers:
Drive controller family DIAX04 ECODRIVE
Drive controller HDS
HDD
DKC
Fig. 1-2: Drive controllers for MKE motors
1.2 Versions
MKE motors are available in different versions:
They are available with
• relative rotor position evaluation (standard) or
• absolute rotor position evaluation (optional).
For details see section 1.3.
Optional. For a safe holding of the axes at standstill when power to the
motor is shutdown. See section 2.5 for details.
They are available with
• plain shaft (standard) or
• shaft with keyway (optional).
For details see section 2.4.
These are motor-specific implementing either
• a terminal box
For details see section 11.4,,Connecting the motor“, Page 11-2.
1.3 Motor feedback
The drive controller requires the current position of the motor to regulate
motor speed or when positioning the motor. The integrated motor feed-
back makes available to the drive controller such signals as are needed to
perform this function. The drive controllers are, in turn, equipped to
transmit the thus determined position value to a superordinate CNC or
PLC.
Motor feedback
Holding brakes
Output shaft
Electrical connections

MKE
1-4 Introduction to MKE digital AC motors DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97
Feedback electronics are equipped with data memory in which motor type
designations, control loops and motor parameters are stored.
The digital intelligent drive controllers from INDRAMAT can read this data
thus guaranteeing
• an easy and quick startup
• an automatic adjustment between motor and drive controllers, avoi-
ding any damage to the motor.
MKE motors are available with two position evaluation options, viz.,
• relative position evaluation and
• absolute position evaluation.
Designation Resolver feedback
(RSF) Resolver feedback (RSF) with integrated
multiturn absolute
encoder
measuring principle inductive
position resolution
at the motor MKE035, 045: 3 x 213 = 24 576 MKE096: 4 x 213 = 32 768
information/rotations
system accuracy ±8 angle minutes
position detection
type relative absolute (within 4096 motor rotations)
Fig. 1-3: Technical data - motor feedback
For relative indirect position evaluation. Replaces a separate incremental
encoder on the motor.
Features of the digital resolver feedback: Given a power failure or after
the initial POWER ON, it is necessary to first run the axis to its reference
point before work can begin.
⇒ When placing the reference point switches and during the referencing
procedure itself, it must be taken into account that during the course of
a mechanical motor revolution, several zero pulses are generated.
This is the result of the operating principle of the resolver. Therefore
note:
• there are 3 zero pulses per revolution with the MKE 035 and MKE 045
• there are 4 zero pulses per revolution with the MKE 096
⇒ For this reason, avoid transmission ratios that are too large or feed
constants that are too small.
For absolute indirect position detection within a range of 4096 motor revo-
lutions. Replaces a separate absolute encoder on the motor.
The absolute axis position of this feedback variant is retained even after
power has been shutdown because of the battery backup it is equipped
with. The battery has a lifespan of approximately ten years.
Feedback data storage
Technical data of the motor feedback
Resolver feedback (RSF)
Resolver feedback (RSF) with
integrated multiturn absolute
encoder

MKE
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97 Mechanical integration into the machine 2-1
2 Mechanical integration into the machine
2.1 Using the drive in potentially explosive areas
The figure below illustrates how to mount the drive in potentially explosive
areas. The following components must meet the demands made for ex-
plosion protection:
• motor with mountable components
• circuits which lead into the potentially explosive areas
Fig. 2-1: Potentially explosive area
MKE motors are prototype tested as per EN 50014 ff (European stan-
dards) and have been released for use in potentially explosive areas. The
relevant drive controllers and any plugin connectors for the lines (power
and feedback connections) must be situated outside of the potentially
dangerous area.
DANGER
Danger of explosion
Danger to life, severe injury and property damage
⇒ Do not install drive controllers and plugin connectors
within the hazardous area.
⇒ Make sure that plugin connectors do not end up in the
hazardous area.
⇒ Do not pull plugin connectors when machine is live!
⇒ Make sure that sparks cannot be generated in the
hazardous area.
Explosive area

MKE
2-2 Mechanical integration into the machine DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97
2.2 Conditions of Use
Maximum installation elevation and ambient temperature
The power data of the motor apply to
• an ambient temperature range of 0º to +40º C
• and an installation elevation of 0 to 1000 meters above sea level.
If the motor is to be used above this range, then the "load factors" must
be taken into consideration. This derates the output data.
⇒ In cases like this, check whether the output data still suffice for your
application. To determine the load factors, see Fig. 2-2. Values higher
than those depicted are not permitted!
WARNING
Motor damage and forfeiture of guarantee!
Motors used outside of the specified conditions could be
damaged. Such use also results in forfeiture of gua-
rantee.
⇒ Please therefore note the following instructions!
Fig. 2-2: Load factors as dependent on ambient temperature and installation ele-
vation
If either ambient temperature or installation elevation exceed nominal
ratings then:
⇒ Multiply the continuous standstill torque listed in the selection data
with the determined load factor .
⇒ Make sure that the derated torque is not exceeded by your application.
If both ambient temperature and installation elevation exceed nominal
ratings then:
⇒ Multiply the determined load factors fTand fH.
⇒ Multiple the determined value by the continuous standstill torque of the
motor indicated in the selection data.
⇒ Make sure that the derated torque is not exceeded by your application.
Nominal data
Exceeding nominal data

MKE
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97 Mechanical integration into the machine 2-3
The design of MKE motors meets the protection category requirements
as described in DIN VDE 0470, section 1, edition 11/1992:
Area of the motor Protection
category
Motor housing, drive shaft, power & feedback connections
(only with proper mounting) IP 65
Fig. 2-3: Protection category of MKE motors
The protection category is defined with the letters IP (International Pro-
tection) and two digits for the protection category.
The first digit denotes the protection level against contact and penetrati-
on of extrinsic objects. Thus,
a 6 means
• protection against penetration by dust (dust-proof)
• and complete contact protection.
The second digit denotes the protection level against water. Thus,
a 5 means
• protection against a jet of water ejected out of a nozzle, sprayed at the
housing from all directions (jet of water).
WARNING
Danger to personnel or damage to property!
Improperly mounted power and feedback connections
can injure personnel or damage the motor!
⇒ Make sure that the power and feedback connections
are mounted by properly trained personnel.
⇒ Use MKE motors only in an environment where the
indicated protection categories can be ensured.
Maximum vibration and shock requirements
Note: MKE motors may be used in areas with excessive vibrations
and shocks as per IEC 721-3-3, edition 1987 or EN 60721-3-3,
edition 06/1994 as per the following table. All mounting should
be shock absorbent. The structure of mountable components
depends on the application, whereby testing may be
necessary.
WARNING
Motor damage and forfeiture of guarantee!
Motors operated outside of specified ambient conditions
could be damaged. The guarantee is also forfeited.
⇒ Please therefore note the following instructions!
Protection category

MKE
2-4 Mechanical integration into the machine DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97
According to IEC 721-3-3, edition 1987 or EN 60721-3-3, edition 06/1994,
MKE motors may be operated in a stationary and weather protected man-
ner under the following conditions:
• longitundinal axis of the motor as per class 3M1
• lateral axis of the motor as per class 3M4
⇒ Make sure that, in terms of storage, transport and operation, MKE
motors do not exceed values as depicted in Fig. 2-4: Limit data for si-
nusoidal oscillations and Fig. 2-5: Limit data of shock loads.
Influencing variable Unit Maximum va-
lue of longi-
tundinal axis
Maximum va-
lue in Lateral
axis
Amplitude of the dis-
placemen at 2 to 9 Hz mm 0.3 3.0
Amplitude of acceleration
at 9 to 200 Hz m/s² 1 10
Fig. 2-4: Limit data for sinusoidal oscillations
Influencing variable Unit Maximum va-
lue of longi-
tundinal axis
Maximum va-
lue of lateral
axis
Total shock-response
spectrum (per IEC721-1
ed. 1990; table 1, section
6)
type L type I
Reference accel (in IEC
721 peak acceleration gi-
ven)
m/s² 40 100
Duration ms 22 11
Fig. 2-5: Limit data of shock loads
Primary coat and housing finish
Condition at delivery: primary coat, black (RAL 9005)
Resistance: against weathering, yellowing, chalking, diluted
acids and lyes.
An additional coat may be applied to the housing (maximum thickness
equals 40 µm).

MKE
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97 Mechanical integration into the machine 2-5
2.3 Type of construction and mounting orientation
Type of construction: B05 for flange mounting
Orientation: any
Per DIN IEC 34-7, edition 12/1992, the following orientations are permit-
ted:
• IM B5 (horizontal)
• IM V1 (vertical, drive shaft downward)
• IM V3 (vertical, drive shaft upward)
CAUTION
Seeping of liquids!
Motors mounted as per IM V3 are susceptible to seeping
liquids that collect over extended periods at the shaft and
then penetrate the motor causing damage.
⇒ Make sure that liquids cannot collect at the drive shaft.
2.4 Drive shaft
Available versions
For a backlash free and non-positive transmission of torque.
⇒ Use clamping sets, tension sleeves or other tension elements for
coupling pinions, pulleys or other similar drive elements.
(Per DIN 6885, sheet 1, edition 08/1968). For a form-fitting transmission
of torque with low demands at the shaft/hub joint.
CAUTION
Damage to the shaft!
During powerful reverse operations, the bottom of the key
can turn out and reduce the quality of concentricity. Ever-
increasing deformations can cause fractures.
⇒ The use of plain shafts is thus recommended.
Shaft loads
Radial and axial forces affect the shaft:
Fig. 2-6: Shaft load forces
Plain drive shaft
Drive shaft with keyway

MKE
2-6 Mechanical integration into the machine DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97
WARNING
Motor damage and forfeiture of guarantee!
Excessive shaft loads can damage the motor and shor-
ten bearing life span considerably. The guarantee is also
forfeited.
⇒ Please therefore note the following instructions!
Maximum permissible radial force Fradial_max depends on shaft/force load.
It is determined in terms of distance x of the point of application of force
and the design of the drive shaft (plain shaft or with keyway).
Sections 4 to 6 contain information on „Determining maximum shaft load".
⇒ Using the characteristics specified, determine the maximum per-
missible radial force Fradial_max for your application.
⇒ Make sure that the radial force thus determined is not exceeded during
actual operations.
The permissible radial force Fradial depends on the bearing lifespan desi-
red. It is dependent on the arithmetic average rotational speed of the
motor nmittel and distance x of application point of force (see Fig. 2-6: Shaft
load forces).
Sections 4 to 6 contain information on „Determining maximum shaft load".
⇒ Using the characteristics specified, determine the permissible radial
force Fradial_max for your application.
⇒ Make sure that the radial force thus determined is not exceeded during
actual operations.
Fig. 2-7: Example to illustrate maximum permissible or permissible radial force
Maximum permissible
radial force Fradial
Permissible radial force Fradial

MKE
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97 Mechanical integration into the machine 2-7
It is proportional to the permissible radial force Fradial .
The factor of proportionality can be found in sections 4 to 6 in section
"Determining maximum shaft load".
⇒ Using the given formula, determine maximum permissible axial force
Faxial for your application.
⇒ Make sure that the determined axial force is not exceeded during ope-
rations. Please note the following on this!
Note: Thermal effects can shift the flanged end of the drive shaft to
the motor housing by up to 0.6 mm. If helical toothed drive pi-
nions or bevel gear pinions are used and mounted directly to
the output shaft, then these changes in the length can lead to
the shifting
•of position of the axis, if the drive pinions are not axially
fixed to the machine, or
•a thermally-dependent component of the axial force if
the drive pinions are axially fixed machine side. There is
the danger, in this case, that the maximum permissible
axial force can be exceeded or that the clearance within
the toothing is unacceptably increased.
The use of drive elements with bearings which are connected
to the motor shaft via an axial compensating coupling is thus
recommended.
If permissible radial and axial forces are not exceeded, then the following
applies to nominal bearnig lifespan:
L10h = 30,000 operating hours (calculated per ISO 281, edition 12/1990).
Bearing lifespan otherwise drops to:
LF
F
10h radial
radial ist
=



⋅
_
330000
L10h: bearing lifespan (per ISO 281, edition 12/1990) in hours
Fradial: determined permissible radial force in N
Fradial_ist: actual effective radial force in N
Fig. 2-8: Calculating bearing lifespan L10h if permissible radial force Fradial is
exceeded
Note: The actually effective radial force Fradial_ist may at no time
exceed maximum permissible radial force Fradial_max.
Note: When mounting drive elements to the motor shaft, do not use
fixed supported bearings, but rather bearings that are simply
supported. The indispensable and existing tolerances genera-
te the application of additional forces to the bearings of the
motor shaft and possibly lead to a drop in service life. If a fixed
type of mounting cannot be avoided, please contact
INDRAMAT!
Permissible axial force Faxial
Bearing lifespan L10h
Mounting drive elements

MKE
2-8 Mechanical integration into the machine DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97
2.5 Holding brake
Optional. Holds the servo axis when no power is being supplied to the
machine.
The holding brake works with the "electrically-released" principle. At zero
current, a magnetic force acts on the brake armature disc. This means
that the brake is locked and holding off the axis.
With the application of 24 V DC, the electrical field cancels the permanent
magnetic field and the brake opens.
The drive controller regulates the holding brake. This ensures the correct
on and off sequence in all operating states.
DANGER
Falling axes!
Danger to personnel. Body parts could be pinched or se-
vered.
⇒ The holding brake itself does not guarantee personnel
safety. Personnel safety must be secured by other
measures such as protective bars or an additional
brake in the machine.
CAUTION
Premature wear of the holding brake is possible!
The holding brake wears down after approximately
20,000 motor revolutions in a closed state.
⇒ Do not use the holding brake to stop a moving axis.
This is only permitted in an emergency stop (E-stop)
situation!
Note: If motors are stored for extended periods, then the transferrab-
le torque of the holding brakes must be checked before the
motor can be used. If the torque specified in the data sheets is
not achieved, then it becomes necessary to refinish the hol-
ding brake prior to use.
⇒ Note the guidelines in section 11.5, Refinishing the holding brake, pa-
ge 11-8.

MKE
DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97 Mechanical integration into the machine 2-9
2.6 Connection variants and cable output directions
A cable connection box is generally used for the MKE motor power and
feedback connections. The desired cable output direction can be set at
the time of mounting by turning the cable connection box.
Fig. 2-9: Possible cable output directions
Note: The cable output direction set at the factory can be altered at
the time of mounting. Please see section, 11.4 „Connecting
the motor“, page 11-2.

MKE
2-10 Mechanical integration into the machine DOK-MOTOR*-MKE*******-PRJ1-EN-E1,44 •06.97
2.7 Speed and Torque
The rotational speed/torque characteristics depict
• the torque limit data
• the rotational speed limit data and
• operating characteristics
A diagram for each motor can be found in sections 4 to 6 under the topic
„Speed/torque characteristics“.
⇒ Use this diagram to:
• Determine maximum usable speed with known torque requirements.
• Check whether the thermal limits of the motor are maintained. The
RMS torque for a critical cycle must be below the S1 continuous ope-
rating curve (MdN) of the averaged speed (arithmetic average).
• Record information from the selection documentation.
Fig. 2-10: Example diagram to illustrate speed/torque characteristics
Corresponds to the theoretically possible maximum torque of the motor.
The drive controller can limit it.
Note: The maximum torque of a motor/controller combination is
always specified in the selection lists.
S6 intermittent operating curve with 25% ON time of the motor cooled
with natural convection or 56% ON time of the motor with surface cooling
as per DIN VDE 0530, edition 07/1991. Maximum duty cycle time for
• MKE 035: equals 10 minutes
• MKE 045 and 096: equals 15 minutes.
S1 continuous operating curve of the motor (as per DIN VDE 0530, editi-
on 07/1991).
Mmax
MKB
MdN