Baldor NEMA-4X, Installation And Operation Manual

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1   INTRODUCTION 

  Thank you for purchasing the BC154 / BCWD140 Series NEMA-4X (IP-65). The Baldor SCR DC 

Motor, The BC154 / BCWD140 Series NEMA-4X (IP-65) SCR DC Motor Speed and Torque 
Control is designed for applications requiring washdown watertight integrity. Its housing is 
ruggedly constructed of die cast aluminum which is protected with an acrylic coating for the 
ultimate in corrosion resistance. All switches are sealed with rubber boots and the main speed 
potentiometer contains a shaft seal.  
 
The electronics for the BC154 / BCWD140 are state-of-the-art and includes short circuit and 
transient protection which provides the ultimate in reliability. Electronic overload protection 
prevents motor burnout and demagnetization of PM motors. The control can be operated in either 
the Speed or Torque mode via jumper selection. The current range, which is also jumper 
selectable, eliminates the necessity for calibration of IR Compensation and Current Limit for most 
applications. The BC154 / BCWD140 also contains jumper selections for AC line voltage 
(230/115), DC armature voltage (180/90) and feedback type (Armature/Tach-Generator). 

Standard features include armature fusing (fuse sold separately). electronic start/stop Switch, and 
an LED indicator array for Power On, Stop and Overload. Although the BC154 / BCWD140 are 
factory set for most applications, a variety of trimpots allow adjustment of the following 
parameters: Minimum and Maximum Speed, Acceleration, Deceleration, Current Limit, IR Comp, 
and Timed Current Limit. Optional features offered are: On/Off AC Line Switch, Forward-Brake-
Reverse Switch, Run-Stop-Jog Switch, Input Signal Isolation, RFI Filtering, and Electronic Run- 
Brake Module. Refer to the following for further information; Figure 1, on page 9, Figure 2, on 
page 10 and Tables 1 – 6, on pages 5 - 8. 

 WARNING! BE SURE TO FOLLOW ALL INSTRUCTIONS CAREFULLY. FIRE OR 

ELECTROCUTION CAN RESULT DUE TO IMPROPER USE OF THIS PRODUCT. READ 
SAFETY WARNING.

 This product complies with all CE directives pertinent at the time of manufacture. 

Contact your local Baldor District Office for Declaration of Conformity.  Installation of a CE 
approved RFI filter is required.  Additional shielded cable and/or AC line cables may be required 
along with a signal isolator.