
Sequencing Logic
B-6
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames E & F
Current State
Next State
Cause (FALSE to TRUE)
18 Enabled
Ready To
Switch On
RUN = FALSE, JOG = FALSE and stopping
complete
19 Enabled
Ready
ENABLE = FALSE
20 Fast Stop Active
Trip Active
Trip (includes CONTACTOR CLOSED = FALSE)
21 Fast Stop Active
Switch On
Disabled
Fast Stop timer expired or FAST STOP MODE =
Coast Stop OR Drive at zero setpoint
22 Trip Active
Tripped
Stack quenched
23 Tripped
Switch On
Disabled
Trip = FALSE and TRIP RESET 0->1 transition
Table B-3 Transition Matrix