HAT552/HAT553 DUAL POWER ATS CONTROLLER USER MANUAL
HAT552/HAT553 ATS Controller 2020-05-14 Version 1.1 Page 19 of 35
9.1
DIGITAL INPUT/OUTPUT FUNCTION DESCRIPTION
9.3.1
INPUT PORT FUNCTION DESCRIPTION
Table 18 Input Port Function Description
No.
Item
Description
0
Not used
Invalid
1
Reserved
2
Remote Gen On Load
Genset start outputs; when Mains is normal, gen closes.
3
Remote Gen Off Load
Genset start outputs; when Mains is normal, Mains closes.
4
Test Lamp
LED lamps are all illuminated on the panel, LCD backlight is on,
LCD is all dark.
5
Reserved
6
Reserved
7
Start Inhibit Input
Inhibit genset start signal output; In auto mode, after stop delay is
over, controller disconnects genset start signal output; In manual
mode, if genset is started, manual stop is needed; after stop manual
start is inactive.
8
Breaker Trip Input
Breaker trip fault input
9
A Master Input
Force to set A Master
10
B Master Input
Force to set B Master
11
A C Key
Same as A Close key on the panel; Auto reset button is needed.
12
B C Key
Same as B Close key on the panel; Auto reset button is needed.
13
Open Key
Same as Open key on the panel; Auto reset button is needed.
14
Man Mode Input
Force controller mode to manual mode.
15
Auto Mode Input
Force controller mode to auto mode.
16
Alarm Reset Input
Reset current alarm
17
Remote Ctrl Inhibit
Remote operation is inactive when this is active.
18
Auto Charge/Rec.
19
Open IN
Open auxiliary feedback input; if switch needs open IN, please first
set Open IN Enable (HAT553).
20
Reserved
9.3.2
OUTPUT PORT FUNCTION DESCRIPTION
Table 19 Output Port Function Description
No.
Item
Description
0
Not Used
Invalid
1
Common Alarm
Common alarms include fault alarm, warning alarm.
2
Common Fault Alarm
Fault alarm includes switch transfer failure.
3
Common Warn Alarm
Warning alarms include A phase sequence wrong, B phase sequence
wrong, and forced to open.
4
Transition Fault
Switch transfer failures include A failed to close, A failed to open, B
failed to close, and B failed to open.
5
Audible Alarm
When fault alarms are active, external annunciator can be connected;
After delay for 60s, clear the audible alarm output.
6
Reserved
