Welcome to another course in the STEP 2000 series,
Siemens Technical Education Program, designed to prepare our
distributors to sell Siemens Energy & Automation products
more effectively. This course covers Basics of DC Drives and
related products.
Upon completion of Basics of DC Drives you will be able to:
Explain the concepts of force, inertia, speed, and torque
• Explain the difference between work and power
• Describe the operation of a DC motor
• Identify types of DC motors by their windings
• Identify nameplate information on a DC motor necessary
for application to a DC drive
• Identify the differences between a power module and a
base drive
• Explain the process of converting AC to DC using
thyristors
• Describe the basic construction of a DC drive
• Explain the significant differences between 1- and 4-
quadrant operation in a DC drive
• Describe features and operation of the Siemens 6RA70
DC MASTER
• Describe the characteristics of constant torque, constant
horsepower, and variable torque applications
