Product Overview
The information contained in this manual is updated periodically. While great care is taken in compiling the information contained in this manual, Engineered
Machined Products, Inc. cannot assume liability for losses of any nature arising from any errors and/or omissions.
The information and specifications contained throughout this manual are up to date at the time of publication. Engineered Machined Products, Inc. reserves
the right to change the content of this manual at any time without notice.
© 2019 EMP, Inc.
2
Engineered Machined Products, Inc.
2701 North 30
th
Street
Escanaba, MI, USA 49829
Phone: +1 (906) 789-7497
Product Overview
The R20C controller is used for brushless motor control in EMP fans and pumps. This controller was originally
introduced with a double flying lead for power/ground and communication. Newer models use a single flying
lead. This controller communicates on J1939 CAN networks and will respond to CAN messages for speed
control. Models with on/off control and thermistor input for automatic speed control are also available.
This manual provides information on electrical specifications, connectors, component applications and
troubleshooting. EMP component CAN messages are documented in
Component Controller CAN
Communication
, document 9980001068.
For assistance with component calibrations and settings, please contact EMP Technical Service at