Parker ac890 - Page 369

B-6 Sequencing Logic
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
Current State
Next State
Cause (FALSE to TRUE)
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