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Faults and their rectification

Planetary gearboxes for servomotors
Operating Instructions, 09/2020, A5E50494253B AA

Table 7- 2

"Fault causes and remedial measures" key table

No. Cause of fault

Remedial measures

Overload

Reduce load

Interruption of a phase in the supply cable

/ motor winding

Check the frequency converter and supply cables, measure the winding

resistances and insulation resistances, repair after consultation with

manufacturer

Interrupted phase in the feeder cable

after switching on

Check the frequency converter and supply cables/check the winding

resistances

Converter output voltage too high, fre-

quency too low

Check the settings on the frequency converter, perform automatic mo-

tor identification

Winding short-circuit or phase short-

circuit in stator winding

Measure the winding resistances and insulation resistances, repair after

consultation with manufacturer

Heat dissipation impeded by deposits

Clean the surface of the drives and ensure that the cooling air can flow

in and out unimpeded

Cooling air inlet/outlet is blocked by for-

eign bodies

Remove the block and ensure that the cooling air can flow in and out

unimpeded

Insufficient shielding for motor and/or

encoder cable

Check the shielding and grounding

Excessive drive controller gain

Adjust the controller

Rotating parts are grinding

Determine cause and adjust parts

Foreign bodies inside the gearbox

Send to manufacturer for repair

Bearing damage

Send to manufacturer for repair

Rotor not balanced

Decouple rotor and rebalance

Rotor out of true, shaft bent

Consult the manufacturer

Poor alignment

Align motor set, check coupling

Coupled machine not balanced

Re-balance coupled machine

Shocks from coupled machine

Check coupled machine

Gearbox head wear due to increased

torsional backlash and bearing play

Refer to the service life calculated when engineering the system. If the

calculated service life has been reached, replace the gearbox or have the

manufacturer check the gearbox for any wear.

Temperature too low

Check whether the ambient conditions match those specified for the

gearbox (operating range).

Excessively high no-load gearbox torque

as a result of excessively high lubricant

viscosity

Check whether the ambient conditions match those specified for the

gearbox (operating range).

If the fault still cannot be resolved after taking the measures stated above, please contact the

manufacturer or the Siemens Service Center.

Содержание Simotics

Страница 1: ......

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Страница 3: ...09 2020 A5E50494253B AA Introduction Fundamental safety instructions 1 Description of the planetary gearbox 2 Preparing for use 3 Mounting 4 Commissioning 5 Operation 6 Faults and their rectification 7 Maintenance 8 Decommissioning and disposal 9 Technical data and dimension drawings 10 ...

Страница 4: ... only by personnel qualified for the specific task in accordance with the relevant documentation in particular its warning notices and safety instructions Qualified personnel are those who based on their training and experience are capable of identifying risks and avoiding potential hazards when working with these products systems Proper use of Siemens products Note the following WARNING Siemens p...

Страница 5: ...structions of the connected servomotor The Operating Instructions provide information about the components that enable the target group to install set up test commission operate and troubleshoot the products and systems correctly and safely These Operating Instructions provide information about handling planetary gearboxes from the initial delivery to disposal Additional information is provided in...

Страница 6: ...point Execute the operating instructions Enumerations Enumerations are identified by a bullet point without any additional symbols Enumerations at the second level are hyphenated Notes Notes are shown as follows Note A Note is an important item of information about the product handling of the product or the relevant section of the document Notes provide you with help or further suggestions ideas M...

Страница 7: ...tomation engineering solutions SITRAIN http siemens com sitrain Technical Support Country specific telephone numbers for technical support are provided on the Internet under Contact Technical Support https support industry siemens com sc ww en sc 2090 Internet address for products Products http www siemens com motioncontrol Websites of third parties This document includes hyperlinks to websites of...

Страница 8: ...Introduction Planetary gearboxes for servomotors 6 Operating Instructions 09 2020 A5E50494253B AA ...

Страница 9: ...ditions 19 2 2 3 Degree of protection 20 2 2 4 Noise emission 21 2 2 5 Bearing versions 23 2 3 Properties of planetary gearboxes 24 2 4 Structure of the article number 25 2 5 Rating plate data 26 3 Preparing for use 29 3 1 Shipping and packaging 29 3 2 Transportation and storage 30 3 2 1 Transport 30 3 2 2 Storage 34 4 Mounting 35 4 1 Safety instructions 35 4 2 Checklist before installation 37 4 3...

Страница 10: ...tenance and inspection intervals 58 8 2 2 Checking tightness of fastening bolts 59 8 2 3 Cleaning servomotors with planetary gearbox 59 8 2 4 Bearing replacement interval 59 8 3 Repair 60 9 Decommissioning and disposal 61 9 1 Decommissioning 61 9 2 Disposal 61 10 Technical data and dimension drawings 63 10 1 Technical data for servomotors with planetary gearbox 63 Index 65 ...

Страница 11: ...s no voltage between any of the power connections and between any of the power connections and the protective conductor connection 5 Check whether the existing auxiliary supply circuits are de energized 6 Ensure that the motors cannot move 7 Identify all other dangerous energy sources e g compressed air hydraulic systems or water Switch the energy sources to a safe state 8 Check that the correct d...

Страница 12: ...g due to unconnected cable shields As a minimum connect cable shields and the conductors of power cables that are not used e g brake cores at one end at the grounded housing potential WARNING Electric shock if there is no ground connection For missing or incorrectly implemented protective conductor connection for devices with protection class I high voltages can be present at open exposed parts wh...

Страница 13: ...anical precision nut runner with a dynamic torque sensor and speed limitation system WARNING Unexpected movement of machines caused by radio devices or mobile phones Using radio devices or mobile telephones in the immediate vicinity of the components can result in equipment malfunction Malfunctions may impair the functional safety of machines and can therefore put people in danger or lead to prope...

Страница 14: ...use Safety Integrated functions you must observe the safety notices in the Safety Integrated manuals WARNING Active implant malfunctions due to electromagnetic fields Electromagnetic fields EMF are generated by the operation of electrical power equipment such as transformers converters or motors People with pacemakers or implants are at particular risk in the immediate vicinity of this equipment I...

Страница 15: ...ves of motors Comply with the specified cooling requirements for the motor WARNING Fire due to incorrect operation of the motor When incorrectly operated and in the case of a fault the motor can overheat resulting in fire and smoke This can result in severe injury or death Further excessively high temperatures destroy motor components and result in increased failures as well as shorter service liv...

Страница 16: ...atic discharge Electric fields or electrostatic discharge can cause malfunctions through damaged individual components integrated circuits modules or devices Only pack store transport and send electronic components modules or devices in their original packaging or in other suitable materials e g conductive foam rubber of aluminum foil Only touch components modules and devices when you are grounded...

Страница 17: ...development to make them more secure Siemens strongly recommends that product updates are applied as soon as they are available and that the latest product versions are used Use of product versions that are no longer supported and failure to apply the latest updates may increase customer s exposure to cyber threats To stay informed about product updates subscribe to the Siemens Industrial Security...

Страница 18: ... damage X ray ionizing radiation and cosmic radiation 2 Unusually high temperatures including open flames as well as emissions of light noise particles gases etc can occur inside and outside the components under fault conditions caused by for example Component failure Software errors Operation and or environmental conditions outside the specification External influences damage 3 Hazardous shock vo...

Страница 19: ...en necessary take into account deviations regarding approvals or country specific regulations Planetary gearboxes are intended for industrial and commercial systems The planetary gearboxes are designed for operation in covered areas under normal climatic conditions such as those found on shop floors and indoor production environments More detailed information is provided in Chapter Page 19 Any oth...

Страница 20: ...red motor 1 Output shaft customer mounting flange 2 Gearbox housing gearing area 3 Gearbox flange 4 Motor Figure 2 1 Geared motor design Technical features of NRB NRK and NLC planetary gearboxes NRB NRK NLC In a system with 1FK2 x x x Permissible temperature during transport 15 55 C Permissible temperatures during storage 15 55 C Permissible ambient temperatures in opera tion without derating 15 4...

Страница 21: ...ard DIN EN 60721 3 3 With the exception of environmental influences Low air temperature Low air pressure and Condensation the motor complies with climate class 3K4 Table 2 1 Permissible environmental conditions for the motor based on climate class 3K4 Environmental parameter Unit Value a Low air temperature C 15 b High air temperature C 40 c Low relative humidity 5 d High relative humidity 95 e Lo...

Страница 22: ... Chapter Preparing for use Page 29 2 2 3 Degree of protection The planetary gearboxes and connected servomotors are designed according to EN 60034 5 IEC 60034 5 and are available in different degrees of protection Parts relevant for the degree of protection Gearbox Motor including the parting plane to the gearbox flange Overview of the degrees of protection available Gearbox NRB NRK NP NLC SP Moto...

Страница 23: ...sion in some instances significantly Note External noise Noise not generated by the gearbox but emitted from it is not taken into consideration Noise emitted by the drive and driven machines or the base are not taken into consideration Under the specified conditions the gearbox component emits a maximum noise level as specified in the following tables The circumferential speed of the sun wheel and...

Страница 24: ...at a distance of 1 m away at a drive speed of n1 3000 rev min without load type number of stages 1 single stage 2 two stage Size 140 180 Type MF1 MF2 MF1 MF2 Sound pressure level in dB A 59 59 62 58 General condition Sound pressure level measured at a distance of 1 m away at a drive speed of n1 3000 rev min without load type number of stages 1 single stage 2 two stage Size 210 240 Type MF1 MF2 MF1...

Страница 25: ...t load i 5 Sound pressure level for NLC gearboxes Size 060 080 120 Sound pressure level in dB A 58 60 65 General condition Sound pressure level measured at a distance of 1 m away at a drive speed of n1 3000 rev min without load i 5 2 2 5 Bearing versions The planetary gearboxes have the following bearing versions Gearbox type NRB NRK NLC SP NP Output bearing type Deep groove ball bearing Tapered r...

Страница 26: ...s SP NP NRB NRK NLC Gearing Helical gearing Straight gearing Direction of rotation Gearbox input and output rotate in the same direction as the motor Gearing lubricant Oil Grease Lubrication type Lubricated for life in the factory Mounting position Any mounting position is possible Classification Precision Standard Torsional backlash Low Average Degree of protection IP65 IP64 IP65 Materials used f...

Страница 27: ...ion Position of the article number 1 2 3 4 5 6 7 8 9 10 11 12 1 3 14 15 16 Z SIMOTICS S 1FK7 1 F K 7 Order codes Planetary gear box SP gearbox type and gearbox size including a definition of the ratio and shaft end J Planetary gearbox NP gearbox type and gearbox size including a definition of the ratio and shaft end V SIMOTICS S 1FT7 1 F T 7 Order codes Planetary gear box SP gearbox type and gearb...

Страница 28: ...ervomotors 26 Operating Instructions 09 2020 A5E50494253B AA 2 5 Rating plate data The rating plate contains the technical data applicable to the delivered motor A second rating plate is provided with the motor and this should be used for documentation purposes Figure 2 3 Rating plate ...

Страница 29: ...f the motor S3 60 operation 9 Geared motor rated torque M2N of the geared motor gearbox output side MN of the motor S3 60 operation 10 Induced voltage at rated speed UIN 11 Geared motor weight m 12 Encoder type identifier 13 Holding brake data Type voltage power consumption holding torque when installed 14 Space for customized labeling 15 Manufacturer s address 16 Stall current I0 17 Short time pe...

Страница 30: ...Description of the planetary gearbox 2 5 Rating plate data Planetary gearboxes for servomotors 28 Operating Instructions 09 2020 A5E50494253B AA ...

Страница 31: ...the delivery check immediately whether the items delivered match the accompanying documents Note Siemens will not accept any claims for missing or incorrect items submitted at a later date Report any visible transportation damage to the delivery company immediately Report any visible defects or missing items to the competent Siemens office immediately The items supplied include a second rating pla...

Страница 32: ...t be lifted or transported using the power connector or signal connector Do not stand in the slewing range of hoisting gear or under suspended loads This chapter provides instructions on how to lift and transport the geared motor Always use suitable load suspension devices when lifting and transporting Transport the geared motor carefully Do not lift and transport the geared motor using the motor ...

Страница 33: ...port the geared motor using eyebolts or lifting eyes as an unfavorable center of gravity situation of the geared motor can unintentionally change the position and cause severe injury Screw the eyebolts for lifting and transporting into the threaded bores depending on the specific position Do not attach any additional loads to the geared motor Use a crossbar for lifting and transporting the geared ...

Страница 34: ...he geared motor and carefully monitor for any unintentional changes to the position of the geared motor that might occur 4 Carefully ensure that the geared motor is in a stable position when lifting and transporting it Lifting using lifting slings WARNING Unintentional change of the geared motor position causing it to fall If you lift and transport the geared motor using lifting slings as a result...

Страница 35: ...ngs 1 Place the lifting slings around the motor 2 Attach the lifting slings to the hook 3 Carefully lift the geared motor Note Carefully ensure that the lifting slings do not come into contact with the motor connector Carefully ensure a stable position when lifting and transporting Setting the geared motor down Procedure 1 Set the geared motor down on a firm level surface 2 Secure the servo geared...

Страница 36: ...abels Store the geared motor in a dry dust free and vibration free indoor area Adhere to the following values vrms 0 2 mm s Max temperatures 15 C to 55 C Mean relative humidity 75 Long term storage Note In the case of storage in transit over 6 months special arrangements must be made for preservation Contact Technical Support If you store the geared motor for longer than six months the storage roo...

Страница 37: ...ies The motor must not be lifted or transported by means of the power connector or signal connector Do not stand in the slewing range of hoisting gear or under suspended loads WARNING Danger to life from permanent magnet fields Even when switched off electric motors with permanent magnets pose a potential risk for persons with heart pacemakers or implants if they are close to inverters motors If y...

Страница 38: ... NOTICE Damage to shaft sealing rings caused by solvent If shaft sealing rings come into contact with solvents when preservation coating is removed the shaft sealing rings can be damaged Avoid contact between solvents and shaft sealing rings NOTICE Thermal damage to temperature sensitive parts Some parts of the electrical motor enclosure can reach temperatures that exceed 100 C If temperature sens...

Страница 39: ...ow before starting any work Checklist 1 general checks Check OK Are all of the necessary components of the configured drive line up available correctly dimensioned installed and connected Are the environmental conditions in the permissible range Checklist 2 checks regarding the mechanical system Check OK Is the geared motor free of any visible damage Have the mounting surfaces e g flange shaft on ...

Страница 40: ...the installation location Their use is prohibited in hazardous zones Thoroughly clean the shaft extension of corrosion protection Use commercially available solvents Ensure sufficient dissipation of heat Information on this topic can be found in the Operating Instructions of the motor If the motor is installed vertically with the end of the shaft facing up ensure that no liquid can enter the upper...

Страница 41: ...alculated according to VDI 2230 The friction coefficient for screws and mounting surfaces is μ 0 10 The yield strength reaches 90 The tools used correspond to type II Classes A and D according to ISO 6789 Setting values of the torque tools The setting values are rounded off values that correspond to a generally applicable scale division or setting options Set these values precisely Strength class ...

Страница 42: ... M5 8 080 70 M6 10 120 100 M10 16 160 145 M12 20 NRK Gearbox size Mounting flange Ø circle of holes in mm Number of threads Thread size Thread depth in mm Property class of the screws 050 IM B14 44 4 M4 8 12 9 070 62 M5 8 090 80 M6 9 120 108 M8 20 155 140 M10 20 NP Gearbox size Mounting flange Ø circle of holes in mm Number of threads Thread size Thread depth in mm Property class of the screws 005...

Страница 43: ...tions 09 2020 A5E50494253B AA 41 SP Gearbox Mounting flange Ø circle of holes in mm Number of threaded bores Bore diameter in mm Flange thick ness in mm Property class of the screws 060 IM B5 68 4 5 5 6 12 9 075 85 6 6 7 100 120 9 10 140 165 11 12 180 215 13 15 210 250 17 17 240 290 17 17 ...

Страница 44: ...nformation see the Configuration Manual for the specific motor Maintain the clearances independent of the subsequent mounting variants Mounting conditions for this specification The data specified for the geared motors is applicable taking into account the following mounting conditions Figure 4 1 Geared motor with mounting flange Gearbox size NRB NRK NLC Steel plate l x b x d in mm 040 050 200 x 2...

Страница 45: ...the mounting situation Higher ambient temperatures higher installation altitudes or smaller mounting surfaces have a negative impact on the amount of heat dissipated from the geared motor You must reduce the power Geared motor cooling improves at lower ambient temperatures and for larger mounting surfaces The power can be increased ...

Страница 46: ...and output elements by applying heat shaft sealing rings can be damaged Protect the shaft sealing rings using a thermal shield to prevent the temperature from increasing to above 100 C due to radiant heat Note When pulling on elements distortion can damage the gearbox Use suitable tools or fixtures when pulling on input and output elements When pulling on or shrinking an element onto the output sh...

Страница 47: ...oving When removing the output elements use an intermediate disk to protect the centering in the shaft extension If necessary completely balance the motor together with the output elements according to ISO 1940 Note Motors with feather key are half key balanced The motors have been balanced with half a feather key 1 Intermediate washer disk to protect the centering in the shaft extension Figure 4 ...

Страница 48: ...Mounting 4 5 Attaching the output elements Planetary gearboxes for servomotors 46 Operating Instructions 09 2020 A5E50494253B AA ...

Страница 49: ...Planetary gearboxes for servomotors Operating Instructions 09 2020 A5E50494253B AA 47 Commissioning 5 Instructions for commissioning are provided in the Operating Instructions of the servomotor ...

Страница 50: ......

Страница 51: ...ting servomotors with planetary gearboxes is provided in the Operating Instructions for the motors While the planetary gearbox is operational ensure that the specified parameters are maintained Make sure that The power consumption is in the specified range There is no abnormal noise The gearbox housing temperature must not exceed 90 C ...

Страница 52: ......

Страница 53: ...ts and components to fall resulting in death or severe injury Only use intact geared motors Observe any unusual geared motor noise NOTICE Damage to the geared motor caused by faults Faults can cause damage to the geared motor Correct the cause of the fault as specified in the remedial measures Repair any damage that has occurred at the machine motor gearbox Note On occurrence of electrical faults ...

Страница 54: ...motor fails to start A B T Geared motor only starts slowly with difficulty A C F T Humming sound when starting C F Humming sound in operation A C F High temperature rise under no load operation D I High temperature rise under load A C I High temperature rise of individual winding sections F Uneven running J K R Grinding sound running noise L R Radial vibrations M N O P R Axial vibrations O Q R Tem...

Страница 55: ...g air can flow in and out unimpeded J Insufficient shielding for motor and or encoder cable Check the shielding and grounding K Excessive drive controller gain Adjust the controller L Rotating parts are grinding Determine cause and adjust parts Foreign bodies inside the gearbox Send to manufacturer for repair Bearing damage Send to manufacturer for repair M Rotor not balanced Decouple rotor and re...

Страница 56: ...Faults and their rectification Planetary gearboxes for servomotors 54 Operating Instructions 09 2020 A5E50494253B AA ...

Страница 57: ...procedure 2 Disconnect the machine from the power supply Switch off the machine Wait until the discharge time specified on the warning labels has elapsed Check that it really de energized from phase to phase and phase to protective conductor Check that every auxiliary circuit is de energized Ensure that the motors cannot move 3 Lock SIMOTICS S motors so they they cannot make any inadvertent motion...

Страница 58: ...can cause burns Do not touch frame parts while the machine is in operation or immediately after machine operation Allow frame parts to cool off before starting any work CAUTION Danger of scalding from escaping hot oil Exiting hot oil can cause burns Before starting any work wait until the oil has cooled down to below 30 C CAUTION Chemical burns and irritations caused by chemical cleaning agents Ch...

Страница 59: ...ifting and transport operations devices and equipment that are unsuitable or damaged can result in death severe injury and or damage to property Lifting devices ground conveyors and load suspension equipment must comply with requirements The maximum capacity of the lifting equipment and the load suspension device must correspond to the weight of the motor see the rating plate Do not attach any add...

Страница 60: ... maintenance times intervals The maintenance intervals depend on the operating conditions Adapt the maintenance intervals to match the local conditions such as pollution dirt switching frequency load etc NOTICE Improper maintenance Service and maintenance must only be performed by properly authorized qualified personnel Only use original SIEMENS parts Maintenance and repair of the servomotor equip...

Страница 61: ...nectors terminal boxes and other live parts Avoid aiming pressurized water at the gearbox shaft sealing rings When required clean the motor and the gearbox to remove any dust and dirt as required In this way you ensure adequate heat dissipation 8 2 4 Bearing replacement interval The bearings are subject to wear and must be replaced after a defined number of operating hours For average load levels ...

Страница 62: ...020 A5E50494253B AA 8 3 Repair Note regarding maintenance The Siemens Service Center Bad Neustadt and other regional service sites throughout the world can handle or organize the maintenance repair of the motor and or gearbox Contact your regional Siemens contact if you require this service ...

Страница 63: ...issioning are provided in the Operating Instructions for the specific servomotor 9 2 Disposal Recycling and disposal For environmentally friendly recycling and disposal of your old device please contact a company certified for the disposal of waste electrical and electronic equipment and dispose of the old device as prescribed in the respective country of use ...

Страница 64: ......

Страница 65: ... data and characteristic curves chapter of the Configuration Manual for the specific motor Carefully note that the rated operating points and S1 data can change when a gearbox is mounted onto the motor Adapt the values for operating the motors according to Chapter Derating factors for the specific motor Dimension sheets and 3D CAD files for the motors with planetary gearboxes are provided in the D...

Страница 66: ......

Страница 67: ...4253B AA 65 Index B Bearing replacement interval 59 C Correct and intended use 17 D Degree of protection 2 H Hotline 5 I Inspection and maintenance 55 M Maintenance intervals 58 R Rating plate data 26 S Siemens Service Center 5 T Target group 3 Technical Support 5 Training 5 ...

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