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
