HAT700 SERIES ATS CONTROLLER USER MANUAL
HAT700 Series ATS Controller 2018-12-13 Version 1.5 Page 38 of 51
S2 Sync Closing Diagram:
MANUAL SYNC CLOSING
In Manual mode, both of S1 Power and S2 power are normal: if S1 has taken load, press S2 button
will lead S2 sync closing; if S2 has taken load, press S1 button will lead S1 sync closing. During
“Waiting Sync” process, press again will stop Sync Closing; Long pressing button will initiate
“Non-sync Closing” operation immediately. If synchronization is not successful after the “Waiting Sync”
delay has expired, “Fail to Sync” alarm will be initiated while “Sync Waiting” signal will output
continuously until the synchronization is successful or press to cancel the operation.
AUTO SYNC CLOSING
In Auto mode, if backup power is normal and it is already closed, after master power return to normal, it
will sync closing.
Warn：After the “Sync Closing” is active, S1 and S2 paralleling situations that may arise. If “S1 Mains
S2 Mains” system is selected, please make sure the switch are self-locking to avoid the S1 and S2
closed simultaneously. Otherwise, damage the switch and circuit, or endanger personal safety situation
may happen.
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