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1st edition, 17-09-2020

7000.05070, 1st edition, 17-09-2020

7000.05070

Safety

6

2

Safety

2.1

Intended use

The encoder described here has been designed as a sensor system that delivers angle infor-
mation used for actuating and positioning the following motors:

Brushless DC-servomotors

The encoder is suitable in particular for tasks in the following fields of application:

Robotics

Toolbuilding

Automation technology

Industrial equipment and special machine building

Medical technology

Laboratory technology

The following aspects must be taken into consideration when using an encoder:

The encoder contains electronic components and should be handled in accordance with 
the ESD regulations.

Do 

not

 use the encoder in environments where it will come into contact with water, 

chemicals and/or dust, 

nor

 in explosion hazard areas.

The encoder should be operated only within the limits specified in the data sheet.

Please ask the manufacturer for information about use under individual special 
environmental conditions.

2.2

Safety instructions

NOTICE!

Electrostatic discharges can damage the electronics.

Wear conductive work clothes.

Wear an earthed wristband.

NOTICE!

Inserting and withdrawing connectors whilst supply voltage is applied at the device can 
damage the electronics.

Do not insert or withdraw connectors whilst supply voltage is applied at the device.

Summary of Contents for AEMT-12 L

Page 1: ...WE CREATE MOTION Technical Manual Multiturn Absolute encoder AEMT 12 16 L EN...

Page 2: ...ber GmbH Co KG cannot accept any liability for any errors in this document or for the consequences of such errors Equally no liability can be accepted for direct or consequential damages resulting fro...

Page 3: ...0 3 5 Description of the interface 11 4 Installation 12 4 1 Mounting 12 4 1 1 Mounting instructions 12 4 1 2 Mounting the motor 13 4 1 3 Load of the connection cables 13 4 2 Electrical connection 14 4...

Page 4: ...R products additional information from the following manuals is useful These manuals can be downloaded in pdf format from the web page www faulhaber com manuals 1 3 Using this document Read the docume...

Page 5: ...ent for a requested action 1 First step for a requested action Result of a step 2 Second step of a requested action Result of an action Request for a single step action Abbreviation Meaning AE Absolut...

Page 6: ...encoder The encoder contains electronic components and should be handled in accordance with the ESD regulations Do not use the encoder in environments where it will come into contact with water chemic...

Page 7: ...w Voltage Directive applies for all electrical equipment with a nominal voltage of 75 to 1500 V DC and 50 to 1000 V AC The products described in this technical manual do not fall within the scope of t...

Page 8: ...ct motor revolutions and increment or decrement the multiturn count accordingly This way when switching on the main supply again the count is still valid A new reference run is not necessary The backu...

Page 9: ...s are available as special program ming on request see Tab 1 Tab 1 Available singleturn and multiturn resolutions Singleturn resolution Multiturn resolution 10 bit 12 bit 11 bit 16 bit 12 bit 20 bit 2...

Page 10: ...nd can damage the mechanics Ensure that the application travel is within the range limits of the maximum travel During commissioning and after a battery change reset the revolution count of the encode...

Page 11: ...is set e g by a low battery voltage see chap 4 4 p 24 The warning bit is activated when the maximum allowed speed is exceeded nERR and nWARN are low active If no further clock signals are sent the en...

Page 12: ...ns This description must be carefully read and observed before commissioning Also comply with the supplementary instructions for installation see chap 2 3 p 7 4 1 Mounting 4 1 1 Mounting instructions...

Page 13: ...ws 2 Protect the fastening screws to prevent displacement due to the effect of heat 3 If necessary attach parts to the motor shaft 4 1 3 Load of the connection cables NOTICE Extreme static or dynamic...

Page 14: ...nic components Observe the ESD protective measures NOTICE Incorrect connection of the wires can damage the electronic components Connect the wires as shown in the connection assignment 4 2 2 Pin assig...

Page 15: ...high level CLK CLK 2 5 V Driver capability See RS422 Timeout Typical 20 s Parameter Value Input high levela a Udd 5 V 4 25 5 V Input low level 0 2 V Preset duty cycle minimum 100 ms At the preset pin...

Page 16: ...r interface based on the RS422 standard A terminating resistor RT 120 is integrated between the input signals CLK and CLK Fig 6 Electrical circuit diagram of the encoder signals and connection to a li...

Page 17: ...ies with the terminating resistor RT can reduce the power consumption and thus the power loss in RT The value of the capacitor must be adjusted to the clock frequency With twisted pair cables proper c...

Page 18: ...preset pin to ground externally using a pull down resistor to ensure a defined voltage of 2 V even with long cable lengths 4 2 4 3 Connecting battery supply Integrate the battery either in the extens...

Page 19: ...of generation V3 0 to perform an EMC compliant instal lation 4 3 1 Cable routing The cable routing depends on various factors such as Is the cable shielded twisted Were interference reducing measures...

Page 20: ...e cables Fig 12 Cables twisted and shielded in function groups for connection of BL servomotor with AEMT 12 16 L 1 Shielding 2 Motor phase 3 Encoder cables 1 10 cm 2 3 1 2 3 1 2 3 1 1 1 Cable Shield M...

Page 21: ...d separate from the sensor or encoder signals and con nect on at least the motor side see 1 or 2 in Fig 13 Fig 13 Various possibilities for the shield connection The sensor signals can optionally be l...

Page 22: ...e approx 50 100 mm from the outer cable shield 1 Make certain that none of the fibres of the braided shield 2 are destroyed 2 Either push back the shield or roll it up and fasten with heat shrink tubi...

Page 23: ...Fig 15 Shield connection with cable lug 1 Scrape the surface around the hole to remove as much of the oxide layer as possible 2 Guide screw with washers through the cable lug 3 Place lock washer on th...

Page 24: ...ify the number range of the position data see chap 6 p 27 signed For the standard configuration of the encoder revolution count 0 after resetting the encoder unsigned For special configuration of the...

Page 25: ...hould still be monitored Recommendation Evaluate the nERROR error bit for battery monitoring Define and perform regular maintenance Change the battery at a regular fixed interval 4 5 Troubleshooting I...

Page 26: ...ons options can be found in the data sheet of the battery adapter Fig 16 Example of a top hat rail mounting for a MC 50xx with battery adapter Article no Description 6501 00368 Battery adapter AEMTL M...

Page 27: ...singleturn there is a number range from 0 to 228 1 Fig 17 Number range without sign unsigned Signed The bit with the highest weighting MSB can be evaluated as sign In the AEMTL 12 16 L this is bit 27...

Page 28: ...haber GmbH Co KG are produced using the most modern production methods and are subject to strict quality inspections All sales and deliv eries are performed exclusively on the basis of our General Con...

Page 29: ...dition 17 09 2020 Dr Fritz Faulhaber GmbH Co KG DR FRITZ FAULHABER GMBH CO KG Antriebssysteme Daimlerstra e 23 25 71101 Sch naich Germany Tel 49 0 7031 638 0 Fax 49 0 7031 638 100 info faulhaber de ww...

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