HAT880 SERIES DUAL POWER BYPASS CONTROLLER USER MANUAL
HAT880 Series Dual Power Bypass Controller 2019-07-11 Version1.1 Page 42 of 49
13
ATS POWER SUPPLY
Switch Power Type can be set as DC Power or AC Power. If DC Power is selected, then the switch
can be transferred at any time, even when both S1 and S2 are in outage. If AC Power is selected,
whether the power is normal or not should be judged according to the AN voltage status of S1 and S2
and AC power voltage range.
The controller will intelligently control power supply when the power of ATS switch is from S1 and S2.
As long as one voltage of S1 and S2 is normal, the controller can ensure ATS voltage power is normal
and can be transferred properly. ATS power supply is outputted via LO and NO, and it will send
close/open signal only when the controller detects normal voltage power.
Fig. 6 - Internal Wiring of ATS Power LO-NO Output
