ATICS-2-ISO_D00046_04_M_XXEN / 03.2021 17
ATICS-2-63A-ISO
The factory settings guarantee a changeover period of t ≤ 0.5 seconds and switching back within 10
seconds when voltage is restored on the preferred supply. Therefore, the ATICS® can be used in IT sys-
tems with a requirement for a changeover period t ≤ 0.5 s (IT systems with operating theatre lights, en-
doscopic field illumination in operating theatres or other essential sources of light, etc.).
When there is a short circuit downstream of the automatic transfer switching device, the automatic
transfer switching device must not continually change back and forth between the two lines. This can
occur if the short-circuit current is small and the automatic transfer switching device switches faster
than the short-circuit breaker trips. The ATICS® monitors the load current downstream of the automatic
transfer switching device in order to detect a possible short circuit. If the preferred line fails and a
short-circuit current is detected at the same time, the ATICS® does not switch over immediately but
only once the circuit breaker has tripped.
If the ATICS® detects a supply failure or a fault, an alarm appears on the LCD, the "ALARM" LED lights
up, the alarm relay trips (if set) and this alarm is forwarded to other Bender devices (such as an alarm in-
dicator and test combination) via the BMS bus.
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