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EM11 User’s Manual
Preface
Preface
Thank you for purchasing the EM11 series frequency inverter developed by China EM Technology
Limited.
The high-performance EM11 series vector control frequency inverter has the following features:
1. Multiple voltage classes
It provides coverage of single-phase 220 V, three-phase 220 V, three-phase 380 V, three-phase 480 V,
three-phase 690 V and three-phase 1140 V.
2. Support multiple motor types
It supports vector control of three-phase AC asynchronous motor and three-phase AC permanent magnet
synchronous motor (PMSM).
3. Diversified control modes
It supports four control modes: sensor-less vector control (SVC), closed- loop vector control (VC) and V/F
control and V/F separately control.
4. Multiple communication protocols
It supports communication via Modbus-RTU, Profibus-DP and CANopen bus.
5. Multiple encoder types
It supports various encoders such as differential encoder, open-collector encoder, resolver and UVW
encoders.
6. Super SVC algorithm
It adopts high-speed response, enhanced low-frequency loading capacity and supports torque control of
SVC, which will bring you a new using experience.
EM11 series frequency inverter is a continuable and vigorous product, and we will offer customized service
to our customers!
Before unpacking, please check carefully:
 Whether the nameplate model of frequency inverter are consistent with your order ratings. The box
contains the frequency inverter, user manual.
 Whether the frequency inverter is damaged during transportation. If you find any omission or damage,
please contact us or your local supplier immediately.
First-time Use
For the users who use this product for the first time, read the manual carefully. If in doubt concerning some
functions or performances, contact the technical support personnel to ensure correct use.
Due to the continuous improvement of frequency inverter, this document will be updated without prior
notice.
EM11 series Frequency inverter complies with the following international standards. All products have
passed the CE certification.
IEC/EN61800-5-1: 2003 Variable speed electric drive system safety requirements;
IEC/EN61800-3: 2004 Variable speed electric drive system, Part 3: The Electro Magnetic Compatibility
(EMC) Standards of Product and its specific testing methods.
Note:
 There are all parameters list integrated at appendix II.
 First time use this inverter, please do motor auto-tuning according to “d0-30”page 104.
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