TXP CLC Course
Command Generation
There are six types of commands:
• Forcing commands (ignoring enabling permissives and protection)
• Protection commands (protecting equipment or personnel safety)
• Commands from a local control unit (at motor or starter)
• Automatic commands (logic control with enabling permissive)
• Manual commands (operator control with enabling permissive)
• Automatic reclosing (after return to normal voltage)
Different enabling criteria, i.e. process enable and manual enable, are required
before a command becomes effective and depend on the type and priority of the
command. With operating mode FORCING, the drive can be operated via the
OM650--commands “Manual ON” and “Manual OFF” irrespective of the process
enable and protection, and automatic commands are blocked. The diagram
below illustrates the priority scheme in the DCM:
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