maxon motor EC 20 Instructions Manual

maxon motor

maxon EC motor EC 20 flat with integrated electronics

Doc. no. 903155

Operating Instructions Edition September 2010

Order Number: 350795, 350776, 350796, 350778, 350794, 349694, 370413, 370412, 350834, 350804,

350835, 350805, 350806, 349731, 370416, 370415

The EC 20 flat motor with integrated electronics is a brushless, speed-controlled 1-quadrant drive. The EC 20 flat
can be supplied in a 2 watt or 5 watt version.

Functions:

• Commutation with Hall sensors

• Digital speed control

• Speed range: 200 rpm – 7000 rpm (depends on version)

• Current restriction fixed

• Overvoltage and undervoltage switch-off

• Overvoltage protection

• Blockage protection, temperature monitoring

• Inverse polarity protection

2-wire version

• Speed proportional to input voltage

5-wire version

• Set value speed target through analog signal 0 ... 10 V

• 2-wire operation possible

• Versions: - «Enable» TTL level compatible

- Direction pre-selection «cw/ccw» TTL level compatible

• Speed monitor supplies frequency signal proportional to speed

Table of contents

1 Safety instructions ....................................................................................................................................... 2

2 Technical data .............................................................................................................................................. 3

3 Minimum external wiring .............................................................................................................................. 7

4 Description function of inputs and outputs 5-wire version ......................................................................... 10

5 Description function of 2-wire version ........................................................................................................ 13

6 Protective functions.................................................................................................................................... 14

7 Installation instructions .............................................................................................................................. 15

8 EMC-compliant installation ........................................................................................................................ 15

9 Trouble shooting ......................................................................................................................................... 16

10 Dimensions ................................................................................................................................................ 17

11 Glossary..................................................................................................................................................... 18

These instructions are available on the Internet as a PDF file at www.maxonmotor.com, under “Service & Down­loads”. Doc. no. 903155_PDF_E.

maxon motor

EC 20 flat with integrated electronics Operating Instructions

1 Safety instructions

Skilled personnel

Only skilled, experienced personnel should install and start the equipment.

Statutory regulations

The user must ensure that the EC 20 flat with integrated electronics and the
components belonging to it are assembled and connected according to local
statutory regulations.

Additional safety equipment

Any electronic equipment is, in principle, not fail-safe. Machinery and equip­ment should therefore be fitted with equipment-independent monitoring and
safety features. There must be guarantees that the drive or the entire piece of
equipment can be run safely if the equipment fails, if it is used incorrectly, if
the control unit fails, if the cable breaks etc.

Repairs

Repairs may only be carried out by authorised personnel or the manufacturer.
It is dangerous for users to open the unit or carry out any repairs.

Danger

Users must ensure that no apparatus is connected to the electrical supply
during installation of the EC 20 flat with integrated electronics! After switching
on, do not touch any live parts!

Max. supply voltage

Make sure that the supply voltage is between 10 VDC and 28 VDC. Perma­nently switched on voltages above 30 VDC destroy the unit.

Electrostatic sensitive components

During transportation, assembly and operation, contact of the EC 20 flat with
integrated electronics with electrostatically charged components or persons
must be avoided. The integrated electronics can be destroyed by electrostatic
discharges.

2 maxon EC motor

Temperature

The temperature of the housing, flange or components may exceed 60°C
during operation.

September 2010 Edition / document number 903155_PDF_E - 07 / subject to change

maxon motor

Operating Instructions EC 20 flat with integrated electronics

2 Technical data

2.1 Order number

350795 (IP40), 350776 (IP00) 2-wire version, nominal speed 3000 rpm, 2 Watt
350796 (IP40), 350778 (IP00) 2-wire version, nominal speed 6000 rpm, 2 Watt
350794 (IP40), 349694 (IP00)
370413 (IP40), 370412 (IP00)
350834 (IP40), 350804 (IP00) 2-wire version, nominal speed 3000 rpm, 5 Watt
350835 (IP40), 350805 (IP00) 2-wire version, nominal speed 6000 rpm, 5 Watt
350806 (IP40), 349731 (IP00)
370416 (IP40), 370415 (IP00)

2.2 Motor data 2 Watt at 24VDC

Order number IP40 (with housing) 350795 350796 350794/370413
Order number IP00 (without housing) 350776 350778 350794/370412

Nominal voltage VDC 24 24 24
No load speed rpm 3000 6000 6000
No load current mA 14.5 19.8 19.8
Nominal speed rpm 3000 6000 6000
Nominal torque mNm 3.74 3.74 3.74
Nominal current mA 196 278 278
Max. torque mNm 5 5 5
Max. current mA 330 330 330
Max. efficiency % 25 37 37

-1

n [min

4000

3500

3000

2500

2000

1500

1000

500

]

Vcc = 28V

Vcc = 24V

Vcc = 18V

Vcc = 12V
Vcc = 10V

«Enable» 5-wire version, nominal speed 6000 rpm, 2 Watt
«cw/ccw» 5-wire version, nominal speed 6000 rpm, 2 Watt

«Enable» 5-wire version, nominal speed 6000 rpm, 5 Watt
«cw/ccw» 5-wire version, nominal speed 6000 rpm, 5 Watt

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6

M [mNm]

Picture 1: Operating range n = f (M)
2-wire version, nominal speed 3000 rpm, order number 350795, 350776

-1

n [min

8000

7000

6000

5000

4000

3000

2000

1000

]

Vcc = 28V

Vcc = 24V

Vcc = 18V

Vcc = 12V
Vcc = 10V

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6

M [mNm]

Picture 2: Operating range n = f (M)
2-wire version, nominal speed 6000 rpm, order number 350796, 350778

September 2010 Edition / document number 903155_PDF_E - 07 / subject to change

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maxon motor

EC 20 flat with integrated electronics Operating Instructions

-1

]

n [min

7000

6000

set value = 10V

5000

4000

3000

2000

1000

set value = 5V

set value = 1V

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6

Picture 3: Operating range n = f (M)
5-wire version, order number 350794 and 349694, 370413, 370412

If the supply voltage is reduced, the torque and/or speed may change.

2.3 Motor data 5 Watt at 24VDC

Order number IP40 (with housing) 350834 350835 350806/370416
Order number IP00 (without housing) 350804 350805 349731/370415

Nominal voltage VDC 24 24 24
No load speed rpm 3000 6000 6000
No load current mA 18.8 23.1 23.1
Nominal speed rpm 3000 6000 6000
Nominal torque mNm 7.5 7.5 7.5
Nominal current mA 258 394 394
Max. torque mNm 10.3 10.3 10.3
Max. current mA 458 580 580
Max. efficiency % 42 55 55

Vcc = 12V

Vcc = 10V

M [mNm]

-1

]

n [min

4000

3500

3000

2500

2000

1500

1000

Vcc = 28V

Vcc = 24V

Vcc = 18V

Vcc = 12V
Vcc = 10V

500

1 2 3 4 5 6 7 8 9 10 11 12

M [mNm]

Picture 4: Operating range n = f (M)
2-wire version, nominal speed 3000 rpm, order number 350834, 350804

4 maxon EC motor

September 2010 Edition / document number 903155_PDF_E - 07 / subject to change

maxon motor

Operating Instructions EC 20 flat with integrated electronics

-1

]

n [min

8000

7000

6000

5000

4000

3000

2000

1000

Vcc = 28V

Vcc = 24V

Vcc = 18V

Vcc = 12V
Vcc = 10V

Picture 5: Operating range n = f (M)
2-wire version, nominal speed 6000 rpm, order number 350835, 350805

n [min

7000

6000

5000

4000

3000

2000

1000

Picture 6: Operating range n = f (M)
5-wire version, order number 350806, 349731, 370416, 370415
If the supply voltage is reduced, the torque and/or speed may change.

2.4 Controller data

Version 2-wire 2-wire 5-wire
Nominal speed 3000 rpm 6000 rpm 6000 rpm

Control variable speed speed speed
Supply voltage V
Set value speed input V = VCC = VCC 0.33 … 10.8
Scale set value speed input rpm/V 125 250 600
Speed range rpm 1250 … 3500 2500 … 7000 200 … 6480
Max. acceleration rpm/s 3000 6000 6000
Direction of rotation (CW = clockwise) cw cw cw
Direction of rotation presetting «cw/ccw» cw/ccw

1 2 3 4 5 6 7 8 9 10 11 12

-1

]

set value = 10V

Vcc = 18V

set value = 5V

set value = 1V

1 2 3 4 5 6 7 8 9 10 11 12

Vcc = 12V

Vcc = 10V

CC

M [mNm]

Vcc = 24V

M [mNm]

V 10 … 28 10 … 28 10 … 28

2.5 Thermal data

Version 2 Watt 5 Watt

Thermal resistance housing-ambient K/W
Thermal resistance winding-housing K/W
Thermal time constant winding s 2.38 10.3
Thermal time constant motor s 133 72.6
Max. permissible winding temperature °C +125 +125
Max. temperature of electronics °C +105 +105

September 2010 Edition / document number 903155_PDF_E - 07 / subject to change

-1

-1

13 13
10 7.5

maxon EC motor 5

maxon motor

EC 20 flat with integrated electronics Operating Instructions

2.6 Mechanical data (preloaded ball bearings)

Version 2 Watt 5 Watt

Rotor inertia gcm

2

3.2 5.1

Axial play at axial load < 2 N mm 0 0

> 2 N mm 0.14 0.14
Radial play preloaded preloaded
Max. axial load (dynamic) N 1.8 1.8
Max. axial load (static) N 20 20

static, shaft supported) N 200 200
Max. radial load 5 mm from flange N 11 12
Weight of motor gr 30 37

2.7 Connection (input/output)

Cable Description Connection Value

Red Supply voltage VCC Supply 10 … 28 VDC
Black Gnd Supply Ground
White (only 5-wire operation) Set value speed input Input 0.33 … 10.8 VDC
Green (only 5-wire operation) Monitor speed n Output 6 counts per turn
Version Enable

grey (only 5-wire operation) «Enable» Input 2.4 … 28 VDC

Version Direction
grey (only 5-wire operation) «cw/ccw» Input 2.4 … 28 VDC

Wire size AWG28 =ˆ 0.09 mm

2

2.8 Protective functions

Inverse-polarity protection up to max. 30 VDC
Blockage protection cut off with blocked motor shaft after 2 s
Low voltage protection cut off at V
High voltage protection cut off at V
Thermal control of the power stage cut off at T > 100 °C typ.
High voltage protection (transient) 150 mWs

2.9 Ambient conditions

Temperature range -40 ... +40 °C
Range with reduced performance +40 ... +85 °C
Temperature range bearing -40 ... +85 °C
Humidity range not condensing 20 … 80 %

2.10 Voltage supply

Ripple < 5%
Output current depending on the load, recommendation >_ 1 A
Max. output voltage 29 VDC
Min. output voltage 9.5 VDC

< 8.5 V

CC

> 29.5 V

CC

6 maxon EC motor

September 2010 Edition / document number 903155_PDF_E - 07 / subject to change