What Is Command Switching on ATV61/ATV71 and ATV630/ATV930 Drives, and How Does It Work?

Command switching allows Altivar drives (ATV61, ATV71, ATV630, and ATV930) to switch control between Command Channel 1 and Command Channel 2. This feature is useful when the start/stop command and the speed reference need to come from different sources.

Command switching is available when the drive profile is set to:

• Separate profile [Profile] (CHCF) = SEP, or
• I/O profile [Profile] (CHCF) = IO

How Command Switching Operates

• Cd1 – Command Channel 1 active:
  Channel 1 remains active with no switching.
• Cd2 – Command Channel 2 active:
  Channel 2 remains active with no switching.
• Digital input assigned (LI1 to LI6, or a logic bit):
  • When the assigned input or bit = 0, Command Channel 1 (Cd1) is active.
  • When the assigned input or bit = 1, Command Channel 2 (Cd2) is active.

Note: Assignment options follow the conditions defined in the Programming Manual. Some command bits (for example, CDO0 to CD14) are not valid for this function.

If this article does not answer your question, check out our FAQ database that has answers to more commonly asked questions:

Frequently Asked Questions - Schneider Electric (se.com)

If this FAQ did not solve your issue, you can call us at 1-888-778-2733 Option 2 and then 4 or e-mail us atdrive.products.support@se.comto create a case with our Technical Support Team.

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