Parker ac890 - Page 324

Sequencing Logic
Page B-6 890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
8
9
10
11
A
B
C
D
1
2
3
4
5
6
7
E
Current State Next State Cause (FALSE to TRUE)
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