Sequencing Logic 
Page B-2  890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D 
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E 
Principle State Machine 
Main Sequencing States 
The main sequencing state of the unit is indicated by an enumerated value given by the parameter 
SEQUENCER STATE under SEQUENCING LOGIC menu. 
Enumerated 
Value 
Main Seq State  Standard  Name  Description 
0  START DISABLED  Switch On Disabled 
The Drive will not accept a switch on 
command  
1  START ENABLED  Ready To Switch On 
The Drive will accept a switch on 
command 
2  SWITCHED ON  Switched On  The Drive’s stack is enabled 
3  READY  Ready  Waiting for Contactor to be closed 
4  ENABLED  Enabled  The Drive is enabled and operational 
5 F-STOP ACTIVE Fast-Stop Active  Fast stop is active 
6  TRIP ACTIVE  Trip Active  The Drive is processing a trip event 
7  TRIPPED  Tripped  The Drive is tripped awaiting trip reset 
Table B-1  Enumerated Values for the SEQUENCING LOGIC Function Block