HAT880 SERIES DUAL POWER BYPASS CONTROLLER USER MANUAL
HAT880 Series Dual Power Bypass Controller 2019-07-11 Version1.1 Page 14 of 49
Warning alarms are active when controller detects the alarm signals, and alarm indicator will flash
slowly (1 time per sec). When alarm is reset, indicator is extinguished, which means warn alarms are
not latched.
Table 12 - Warning Alarms
No.
Item
Description
1
S1 Over Current
Warn
When the S1 current has exceeded the pre-set value and the action
selects “Warn”, it will initiate a warning alarm.
2
S2 Over Current
Warn
When the S2 current has exceeded the pre-set value and the action
selects “Warn”, it will initiate a warning alarm.
3
Forced Open Warn
When the input is active and the action (cut off non-fire supply) selects
“Warn”, it will initiate a warning alarm.
4
Battery Under Volt
When the battery voltage has fallen below the pre-set value, it will
initiate a warning alarm.
5
Battery Over Volt
When the battery voltage has exceeded the pre-set value, it will initiate
a warning alarm.
6
Fail to Sync
When sync waiting is overtime and fail to sync action selects "Warn", it
will initiate a warning alarm.
Fault alarms are active when controller detects the alarm signals. Alarm indicator will flash rapidly
(5 times per sec) and the alarm will last until it was removed manually. Fault alarms are latched.
Table 13 - Fault Aalrms
No.
Item
Description
1
S1 Failed to Close
S1 fails to close when S1 is closing.
2
S1 Failed to Open
S1 fails to open when S1 is opening.
3
S2 Failed to Close
S2 fails to close when S2 is closing.
4
S2 Failed to Open
S2 fails to open when S2 is opening.
5
S1 Over Current Trip
When the S1 is taking load and its current has exceeded the pre-set
value, and the action selects “Trip”, it will initiate a trip alarm.
6
S2 Over Current Trip
When the S2 is taking load and its current has exceeded the pre-set
value and the action selects “Trip”, it will initiate a trip alarm.
7
Forced Open Fault
When the input is active and the action (cut off non-fire supply) selects
“Fault”, it will initiate a fault alarm.
8
S1 Genset Fault
Only when system has 2 gensets and S1 is generating, S1 fails to start.
9
S2 Genset Fault
Only when system has 2 gensets and S2 is generating, S2 fails to start.
10
Switch Trip Alarm
It will initiate a fault alarm, when the input is active.
11
Fail to Sync
When sync waiting is overtime and fail to sync action selects "Fault", it
will initiate a fault alarm. (only active in auto mode)
