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HAT552/HAT553 DUAL POWER ATS CONTROLLER USER MANUAL
HAT552/HAT553 ATS Controller 2020-05-14 Version 1.1 Page 12 of 35
Table 12 Switch Status
No.
Item
Description
1
Ready to Transfer
Enter switch transfer procedure
2
Closing A
A power is experiencing close delay.
3
Opening A
A power is experiencing open delay (HAT553).
4
Closing B
B power is experiencing close delay.
5
Opening B
B power is experiencing open delay (HAT553).
8
Transfer Rest
The interval time for switch transfer
9
Closing A Again
Again close time when A power failed to open for the first time, if Again
Close Delay is not set to 0.
10
Opening A Again
Again open time (HAT553) when A power failed to close for the first
time, if Again Close Delay is not set to 0.
11
Closing B Again
Again close time when B power failed to open for the first time, if Again
Close Delay is not set to 0.
12
Opening B Again
Again open time (HAT553) when B power failed to close for the first
time, if Again Close Delay is not set to 0.
13
A On Load
A power is closed and A power takes the load.
14
B On Load
B power is closed and B power takes the load.
15
Offload
Switch has been open and load is disconnected.
When controller detects warning alarm, warning alarm becomes active, alarm indicator will slow flashes
(1 time per second), and when alarm disappears, alarm indicator will extinguish. Warning alarm isn't
latched.
Table 13 Warning Alarm
No.
Item
Description
1
Forced to Open
Forced to open (Non fire cutoff input) action is set to Warning; when it
is active, the warning alarms (HAT553).
When controller detects fault alarm, fault alarm becomes active, alarm indicator will quick flash (5 times
per second). Fault alarm is latched, and it disappears until user resets it manually.
Table 14 Fault Alarm
No.
Item
Description
1
A Failed to Close
Switch didn't close properly after A power close signal is stopped to
output.
2
A Failed to Open
Switch didn't succeed to close properly after A power open signal is
stopped to output (HAT553).
3
B Failed to Close
Switch didn't close properly after B power close signal is stopped to
output.
4
B Failed to Open
Switch didn't succeed to close properly after B power open signal is
stopped to output (HAT553).
5
Forced Open Fault
Forced Open Fault (Non fire cutoff input) action is set to Fault; when it
is active, Forced Open Fault alarms.
6
Switch Trip Alarm
Switch trip alarm input is active.
7
Simult. Dual Close
Side switches of A/B power are in closed status.