18 ATICS-2-ISO_D00046_04_M_XXEN / 03.2021
System description
3.5.1.1 Time diagram: Changeover between preferred and redundant line
i
Time diagrams: Times are not shown to scale.
Example: Line 1 is set as preferred line.
Changeover to line 2
if line 1 has failed
Switching back to
line 1 (normal operation with delay on release)
Switching back to line 1
(if line 2 has failed)
Voltage line 1
Voltage line 2
Voltage output ATICS®
Alarm failure line 1
Alarm failure line 2
Switch position
Time delay
t(pulse) Pulse time: 15 … 30 ms
t(0) Dead time
t(on)
Response delay ALARM failure voltage line 1
Measuring time:
approx. 50 ms
t(off)
Delay on release ALARM failure voltage line 1
Measuring time:
approx. 50 ms
t(on)
Delay on release ALARM failure voltage line 2
Measuring time:
approx. 50 ms
t(2->1) Return transfer delay time
*1 Changeover period t(1->2) indicated during a test
*2 The return transfer delay time may differ from the changeover period (t(1->2)
t(off)
1
0
2
t(on)
1
t(Imp)
t(0)
t(Imp)
1
t(Imp)
t(0)
t(Imp)
0
2
1
t(off)
1
t(Imp)
t(0)
t(Imp)
2
0
1
t(2->1)
t(2->1)
t(on)
2
*1
*2
0
1