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Maintenance

«EC frameless DT» Installation Manual
mmag  |  2021-12  |  rel10341

4-25

  

  

4

MAINTENANCE

4.1

Periodic Inspection

The «EC frameless DT» as a whole and its individual parts are maintenance-free.

Outer body, motor shaft, and bearings are customer-made parts. For their maintenance and repair consult 
the relevant instructions. Thereby observe the following:

If you perform 
maintenance on 
outer body, motor 
shaft, and bear-
ings:

Before you start: Be aware of the necessary safety precautions (

page 5) and strictly follow the 

general rules (

page 12).

Verify the correct position of the motor before re-commissioning.

4.2

Storage

Observe all safety aspects (

“About the Safety Precautions” on page 5) and the stated environmental con-

ditions (

“Technical Data” on page 7).

Physically separate the storage location to prevent all persons who possibly may suffer impairment caused 
by strong magnetic fields from approaching the device and force them to stay clear in a safe distance of at 
least two (2) meters. Put up warning signs stating STRONG MAGNETIC FIELDS.

4.3

Decommissioning & Dismantling

Dismantling follows basically the Installation in reverse order (

chapter “3.2 Design Guidelines” on 

page 14). Be aware of the necessary safety precautions (

page 5) and strictly follow the general rules 

(

page 12).

4.4

Disposal

In no case dispose used components with normal domestic waste. 

Dispose used components only via official collection sites or a certified recycling company. Draw to atten-
tion that the high magnetic forces produced by the device constitute an imminent hazard to persons wearing 
a cardiac pacemaker or metal implants.

Summary of Contents for EC frameless DT

Page 1: ...EC frameless DT maxon Frameless Drives Installation Manual mmag Edition 2021 12 DocID rel10341 Dynamic Torque Installation Manual...

Page 2: ...MAGNETIC FORCES THAT YOU TAKE THE APPROPRIATE PRECAUTIONARY MEASURES AND THAT YOU COMMUNICATE THIS FACT TO PERSONS IN YOUR VICINITY These instructions are intended for qualified technical personnel Pr...

Page 3: ...to use Throughout the document the following notations and codes will be used Table 1 1 Notation used 1 1 4 Symbols Signs In the course of the present document the following symbols and signs will be...

Page 4: ...e men tioned trademarks belong to their respective owners and are protected under intellectual property rights 2021 maxon All rights reserved Subject to change without prior notice mmag EC frameless D...

Page 5: ...MELESS DT COMPRISES PARTS THAT PRODUCE STRONG MAG NETIC FIELDS IT IS THEREFORE MOST IMPORTANT THAT YOU ARE AWARE OF THE CONSE QUENCES OF THESE MAGNETIC FORCES THAT YOU TAKE THE APPROPRIATE PRECAUTION...

Page 6: ...that you are not entitled to perform any repair on components supplied by maxon motor Electrostatic Sensitive Device ESD Wear electrically conductive clothing and footwear Observe ESD protective meas...

Page 7: ...mutation signals Hall signals 2 1 Technical Data Parameter DT50M Key data a Nominal voltage b VDC 43 2 Nominal speed rpm 3 480 Nominal torque c mNm 442 Nominal current A 4 89 Motor constant d 123 Wind...

Page 8: ...s usually improved typically by 50 and operation with higher nominal torques is possible d The motor constant indicates the electrodynamic torque without friction etc which occurs with current heat lo...

Page 9: ...on Manual mmag 2021 12 rel10341 2 9 2 4 Standards The described device has been successfully tested for compliance with the below listed standards Table 2 6 Standards Standards Specifications Manufact...

Page 10: ...Specifications Standards EC frameless DT Installation Manual 2 10 mmag 2021 12 rel10341 p a g e i n te n ti o n a l l y l e ft b l a n k...

Page 11: ...stator carries a built in encoder module The four components are paired with each other during the manufacturing process and thus form a final unit It is therefore important that you handle and instal...

Page 12: ...specified design characteristics and tolerances are met Do only continue if this is actually the case If this is not the case you must rectify the deviations first Safe trouble free long term operatio...

Page 13: ...e the drive or can be attracted by the motor magnets Thermal behavior The values given in the data sheet for nominal torque maximal continuous torque thermal resistances and nominal current maximal co...

Page 14: ...fied form and position tolerances will result in a reduction of the performance data Exceeding deviations can lead to stripping of the rotor to an increased cogging torque and to permanent damage to t...

Page 15: ...xon recommends to fix the stator of the EC frameless DT axially using bolted connections This axial screw connection also serves as a non positive transmission of the torque Requirements for operation...

Page 16: ...n magnetic Cleaning agent Lint free cloths Centering aids for rotor and stator non magnetic Mounting fixture for example hand lever press or drill stand Material pair or Combination of parts Product R...

Page 17: ...ich must be understood as a general guide The actual conditions depend on the respective customer application Color coding in illustrations For easier differentiation individual components are shown i...

Page 18: ...3 18 mmag 2021 12 rel10341 3 Mount and fasten stator in a guided and controlled position Figure 3 5 Mounting the stator 4 Check installation position of rotor and stator as to dimensional drawing s sp...

Page 19: ...tensile stress use strain relief 3 4 1 Connections 3 4 1 1 Motor By default the EC frameless DT is supplied without connector It has three individual strands to connect to the motor windings 1 2 and...

Page 20: ...A Channel A complement 4 A Channel A 5 B Channel B complement 6 B Channel B 7 do not connect 8 do not connect 9 H1 Hall sensor 1 10 H2 Hall sensor 2 11 H3 Hall sensor 3 12 do not connect 13 NTC Thermi...

Page 21: ...stor NTC on page 23 3 do not connect 4 H3 Hall sensor 3 5 H2 Hall sensor 2 6 H1 Hall sensor 1 7 do not connect 8 do not connect 9 B Channel B 10 B Channel B complement 11 A Channel A 12 A Channel A co...

Page 22: ...o a minimal delay of the temperature measurement and to a higher thermal resistance lower measured temperature For this rea son temperature monitoring is primarily suitable for continuous operation wh...

Page 23: ...nd must not be used for monitoring the winding temperature A thermistor is installed on the encoder for temperature monitoring The resistance value of the NTC depending on the temperature can be descr...

Page 24: ...Installation Electrical Installation EC frameless DT Installation Manual 3 24 mmag 2021 12 rel10341 p a g e i n te n ti o n a l l y l e ft b l a n k...

Page 25: ...onmental con ditions Technical Data on page 7 Physically separate the storage location to prevent all persons who possibly may suffer impairment caused by strong magnetic fields from approaching the d...

Page 26: ...lying with all essential requirements of EC Directive 2006 42 EC Directive on Machinery It is intended exclusively to be incorporated into machinery or partly completed machinery and therefore does no...

Page 27: ...onents 11 Figure 3 3 Mounting the rotor 17 Figure 3 4 Positioning shaft and housing 17 Figure 3 5 Mounting the stator 18 Figure 3 6 Checking the installation position 18 Figure 3 7 Motor connections 1...

Page 28: ...on of the rotor recommended adhesives 15 Table 3 8 Fixation of the stator recommended bolted joints 15 Table 3 9 Fixation of the stator recommended screw locks 16 Table 3 10 Terminal assignment Motor...

Page 29: ...s 4 inspection periodic 25 L labeling 8 long term storage 25 M mandatory action signs 3 markings 8 motor connections 19 N nameplate 8 notations used 3 NTC thermistor 22 23 P part numbers 708583 21 708...

Page 30: ...EC frameless DT Installation Manual Z 30 mmag 2021 12 rel10341 APPENDIX...

Page 31: ...oltage V 2 No load speed rpm 3 No load current mA 4 Nominal speed rpm 5 Nominal torque max continuous torque mNm 6 Nominal current max continuous current A 7 Stall torque mNm 8 Stall current A 9 Max e...

Page 32: ...l Drawing CO NO A100001468 DATE NAME SCALE 2 1 3D MODEL TITLE EN CREATED 24 08 2021 MMAGMUAG SHEETS A2 1 1 8284624 Dimensional Drawing MODIFIED 12 11 2021 MMAGMUAG DIMENSION UNITS PROJECTION METHOD TI...

Page 33: ...1470 DATE NAME SCALE 2 1 3D MODEL TITLE EN CREATED 24 09 2021 MMAGMUAG SHEETS A2 1 1 8369329 Dimensional Drawing MODIFIED 02 12 2021 MMAGMUAG DIMENSION UNITS PROJECTION METHOD TITLE DE Massbild RELEAS...

Page 34: ...0001470 DATE NAME SCALE 2 1 3D MODEL TITLE EN CREATED 01 10 2021 MMAGMUAG SHEETS A2 1 1 8369329 Dimensional Drawing MODIFIED 02 12 2021 MMAGMUAG DIMENSION UNITS PROJECTION METHOD TITLE DE Massbild REL...

Page 35: ...ten approval is not permitted The mentioned trademarks belong to their respective owners and are protected under intellectual property rights 2021 maxon All rights reserved Subject to change without p...

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