Maxon motor EC 20 Manuale utente

maxon motor

maxon EC motor EC 20 ﬂat with integrated electronics

Doc. no. 903155

Operating Instructions Edition September 2010

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 & Down-

loads”. Doc. no. 903155_PDF_E.

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

350835, 350805, 350806, 349731, 370416, 370415

maxon motor

2 maxon EC motor

EC 20 ﬂat with integrated electronics Operating Instructions

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

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 equip-

ment 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. Perma-

nently 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.

Temperature

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

during operation.

maxon EC motor 3

maxon motor

Operating Instructions EC 20 ﬂat with integrated electronics

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

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) «Enable» 5-wire version, nominal speed 6000 rpm, 2 Watt

370413 (IP40), 370412 (IP00) «cw/ccw» 5-wire version, nominal speed 6000 rpm, 2 Watt

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) «Enable» 5-wire version, nominal speed 6000 rpm, 5 Watt

370416 (IP40), 370415 (IP00) «cw/ccw» 5-wire version, nominal speed 6000 rpm, 5 Watt

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

500

1000

1500

2000

2500

3000

3500

4000

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

n [min-1]

M [mNm]

Vcc = 28V

Vcc = 24V

Vcc = 18V

Vcc = 12V

Vcc = 10V

Picture 1: Operating range n = f (M)

2-wire version, nominal speed 3000 rpm, order number 350795, 350776

1000

2000

3000

4000

5000

6000

7000

8000

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

n [min-1]

M [mNm]

Vcc = 28V

Vcc = 24V

Vcc = 18V

Vcc = 12V

Vcc = 10V

Picture 2: Operating range n = f (M)

2-wire version, nominal speed 6000 rpm, order number 350796, 350778

maxon motor

4 maxon EC motor

EC 20 ﬂat with integrated electronics Operating Instructions

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

1000

2000

3000

4000

5000

6000

7000

n [min-1]

M [mNm]

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

set value = 10V

set value = 5V

set value = 1V

Vcc = 12V

Vcc = 10V

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

500

1000

1500

2000

2500

3000

3500

4000

123456789101112

n [min-1]

M [mNm]

Vcc = 28V

Vcc = 24V

Vcc = 18V

Vcc = 12V

Vcc = 10V

Picture 4: Operating range n = f (M)

2-wire version, nominal speed 3000 rpm, order number 350834, 350804

maxon EC motor 5

maxon motor

Operating Instructions EC 20 ﬂat with integrated electronics

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

1000

2000

3000

4000

5000

6000

7000

8000

123456789101112

n [min-1]

M [mNm]

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

1000

2000

3000

4000

5000

6000

7000

n [min-1]

M [mNm]

set value = 10V

set value = 1V

Vcc = 12V

Vcc = 10V

123456789101112

Vcc = 18V

Vcc = 24V

set value = 5V

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 VCC V 10 … 28 10 … 28 10 … 28

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

2.5 Thermal data

Version 2 Watt 5 Watt

Thermal resistance housing-ambient K/W-1 13 13

Thermal resistance winding-housing K/W-1 10 7.5

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

maxon motor

6 maxon EC motor

EC 20 ﬂat with integrated electronics Operating Instructions

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

2.6 Mechanical data (preloaded ball bearings)

Version 2 Watt 5 Watt

Rotor inertia gcm23.2 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 mm2

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 VCC < 8.5 V

High voltage protection cut off at VCC > 29.5 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

maxon EC motor 7

maxon motor

Operating Instructions EC 20 ﬂat with integrated electronics

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

3 Minimum external wiring

3.1 5-wire version

Supply

voltage

10 ... 28 VDC

Set value

Speed

0 ... 10 VDC

red

black

white

green

grey

Supply

voltage

10 ... 28 VDC

Set value

Speed

0 ... 10 VDC

Supply

voltage

10 ... 28 VDC

14k / 0.1 W 10k / 0.1 W

Supply

voltage

10 ... 28 VDC

Values for 24 VDC operating voltage

14k / 0.1 W 10k / 0.1 W

Values for 24 VDC operating voltage

red

black

white

green

grey

red

black

white

green

grey

red

black

white

green

grey

«Enable» or «cw»

2.4 ... 28 VDC

«Disable» or «ccw»

0.0 ... 0.8 VDC

«Enable» or «cw» if closed

«Disable» or «ccw» if open

«Enable» or «cw»

2.4 ... 28 VDC

«Disable» or «ccw»

0.0 ... 0.8 VDC

«Enable» or «cw» if closed

«Disable» or «ccw» if open

Picture 7: Example for speed set value and release «Enable» or direction «cw/ccw» (depending

on the variant) through external power source.

Supply

voltage

10 ... 28 VDC

Set value

Speed

0 ... 10 VDC

red

black

white

green

grey

Supply

voltage

10 ... 28 VDC

Set value

Speed

0 ... 10 VDC

Supply

voltage

10 ... 28 VDC

14k / 0.1 W 10k / 0.1 W

Supply

voltage

10 ... 28 VDC

Values for 24 VDC operating voltage

14k / 0.1 W 10k / 0.1 W

Values for 24 VDC operating voltage

red

black

white

green

grey

red

black

white

green

grey

red

black

white

green

grey

«Enable» or «cw»

2.4 ... 28 VDC

«Disable» or «ccw»

0.0 ... 0.8 VDC

«Enable» or «cw» if closed

«Disable» or «ccw» if open

«Enable» or «cw»

2.4 ... 28 VDC

«Disable» or «ccw»

0.0 ... 0.8 VDC

«Enable» or «cw» if closed

«Disable» or «ccw» if open

Picture 8: Example for speed set value with external power source and release «Enable» or

direction «cw/ccw» (depending on the variant) with potentional-free contact.

Supply

voltage

10 ... 28 VDC

Set value

Speed

0 ... 10 VDC

red

black

white

green

grey

Supply

voltage

10 ... 28 VDC

Set value

Speed

0 ... 10 VDC

Supply

voltage

10 ... 28 VDC

14k / 0.1 W 10k / 0.1 W

Supply

voltage

10 ... 28 VDC

Values for 24 VDC operating voltage

14k / 0.1 W 10k / 0.1 W

Values for 24 VDC operating voltage

red

black

white

green

grey

red

black

white

green

grey

red

black

white

green

grey

«Enable» or «cw»

2.4 ... 28 VDC

«Disable» or «ccw»

0.0 ... 0.8 VDC

«Enable» or «cw» if closed

«Disable» or «ccw» if open

«Enable» or «cw»

2.4 ... 28 VDC

«Disable» or «ccw»

0.0 ... 0.8 VDC

«Enable» or «cw» if closed

«Disable» or «ccw» if open

Picture 9: Example for speed set value with external potentiometer and release «Enable» or

direction «cw/ccw» (depending on the variant) with external power source.

maxon motor

8 maxon EC motor

EC 20 ﬂat with integrated electronics Operating Instructions

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

Supply

voltage

10 ... 28 VDC

Set value

Speed

0 ... 10 VDC

red

black

white

green

grey

Supply

voltage

10 ... 28 VDC

Set value

Speed

0 ... 10 VDC

Supply

voltage

10 ... 28 VDC

14k / 0.1 W 10k / 0.1 W

Supply

voltage

10 ... 28 VDC

Values for 24 VDC operating voltage

14k / 0.1 W 10k / 0.1 W

Values for 24 VDC operating voltage

red

black

white

green

grey

red

black

white

green

grey

red

black

white

green

grey

«Enable» or «cw»

2.4 ... 28 VDC

«Disable» or «ccw»

0.0 ... 0.8 VDC

«Enable» or «cw» if closed

«Disable» or «ccw» if open

«Enable» or «cw»

2.4 ... 28 VDC

«Disable» or «ccw»

0.0 ... 0.8 VDC

«Enable» or «cw» if closed

«Disable» or «ccw» if open

Picture 10: Example for speed set value with external potentiometer and release «Enable» or

direction «cw/ccw» (depending on the variant) with potentional-free contact.

3.2 5-wire version in 2-wire operating mode

2-wire operating mode can be simulated by short-circuiting the terminals set

value speed input and speed monitor output. Speed is proportional to the

supply voltage (see picture 17).

Supply

voltage

10 ... 28 VDC

red

black

white

green

grey

Supply

voltage

10 ... 28 VDC

red

black

Supply

voltage

10 ... 28 VDC

Supply

voltage

10 ... 28 VDC

red

black

white

green

grey

red

black

white

green

grey

«cw»

2.4 ... 28 VDC

«ccw»

0.0 ... 0.8 VDC

«cw» if closed

«ccw» if open

Picture 11: Example for 5-wire version in 2-wire operating mode

Version direction «cw/ccw»: the direction of rotation can be selected at the

grey wire.

Supply

voltage

10 ... 28 VDC

red

black

white

green

grey

Supply

voltage

10 ... 28 VDC

red

black

Supply

voltage

10 ... 28 VDC

Supply

voltage

10 ... 28 VDC

red

black

white

green

grey

red

black

white

green

grey

«cw»

2.4 ... 28 VDC

«ccw»

0.0 ... 0.8 VDC

«cw» if closed

«ccw» if open

Picture 12: Example for 5-wire version direction «cw/ccw» in 2-wire operating mode.

maxon EC motor 9

maxon motor

Operating Instructions EC 20 ﬂat with integrated electronics

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

Version direction «cw/ccw»: the direction of rotation can be selected at the

grey wire.

Supply

voltage

10 ... 28 VDC

red

black

white

green

grey

Supply

voltage

10 ... 28 VDC

red

black

Supply

voltage

10 ... 28 VDC

Supply

voltage

10 ... 28 VDC

red

black

white

green

grey

red

black

white

green

grey

«cw»

2.4 ... 28 VDC

«ccw»

0.0 ... 0.8 VDC

«cw» if closed

«ccw» if open

Picture 13: Example for 5-wire version direction «cw/ccw» in 2-wire operating mode.

3.3 2-wire version

Supply

voltage

10 ... 28 VDC

red

black

white

green

grey

Supply

voltage

10 ... 28 VDC

red

black

Supply

voltage

10 ... 28 VDC

Supply

voltage

10 ... 28 VDC

red

black

white

green

grey

red

black

white

green

grey

«cw»

2.4 ... 28 VDC

«ccw»

0.0 ... 0.8 VDC

«cw» if closed

«ccw» if open

Picture 14: Example for 2-wire version

maxon motor

10 maxon EC motor

EC 20 ﬂat with integrated electronics Operating Instructions

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

4 Description function of inputs and outputs 5-wire version

4.1 Set value speed input

Motor speed is set with an analog voltage at the set value speed input.

The set value speed input is protected against overvoltage.

Pin allocation Cable white

Input voltage range 0 ... +10.8 V (based on GND)

Input impedance 62 kW (range 0 ... +21.9 V)

47 kW (range 21.9 V... +30 V)

Continuous overvoltage protection -30 V ... +30 V

47k

15k

1µF

white

set value speed

12k

100k

grey

6’000

200

10.0

0.17 0.33

3’000

510.8

6’480

7’000

Speed

[rpm]

2’500

6’000

Enable

3’500

1’250

3’000

Operating voltage [V]

Speed

[rpm]

Operating voltage [V]

Speed

[rpm]

Operating voltage [V]

12k

100k

grey

Direction «cw/ccw»

Picture 15: Wiring set value speed

The speed set value is set with the voltage at the speed set value input. The

set speed is controlled by the ampliﬁer. Changes to speed set value are re-

stricted by the maximum acceleration (see section 2.4).

To activate the output stage in the «enable» version, the voltage at the enable

input must be higher than 2.4 V, while the speed set value must be above

0.17 V.

With the «cw/ccw» direction pre-selection version, the output stage is activa-

ted when the speed set value is higher 0.17 V.

Set value input area Function Comments

0 V … 0.17 V «Disable» Power stage switched off.

0.17 V … 0.33 V Operation at minimum speed

(200 rpm)

If «enable» higher than 2.4 V for version

«Enable».

0.33 V … 10.8 V Linear speed setting between

200 rpm and 6480 rpm

600

Monitor n actual

actual Monitor n

target target

If «enable» higher than 2.4 V. In speed

range between 200 rpm and 300 rpm,

control accuracy of the speed controller

is restricted. The speed can vary from

the speciﬁed set value depending on the

load and supply voltage.

Vtarget = Set value voltage

ntarget = Desired speed

Indice

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