Appendix A—Zelio™ Smart Relay Ladder Logic

The Zelio Smart Relay controls the power converter’s output contactor and the bypass contactor when Bypass (Mod Y10) is selected. Zelio Smart Relay Programcontains a diagram of the default Zelio Smart Relay program and Zelio Smart Relay Ladder Logic Timers is a timing chart.

Custom requests may result in a program that differs from the one illustrated in Zelio Smart Relay Program. If you have requested custom programming, review the drawings supplied with the process drive.

Zelio Smart Relay Ladder Logic Timers

Timer	Description	Function	Time (s)
T1	Power on delay	A: Active, control held down	6
T2	Open delay	C: Off delay	2
T3	AFC run delay	A: Active, control held down	5
T4	AFC contactor time delay	A: Active, control held down	3
T5	Bypass contactor time delay	A: Active, control held down	3
T6	Drive trip signal delay	A: Active, control held down	2
T7	Start with Line contactor	B: On pulse one shot	6