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HAT552/HAT553 DUAL POWER ATS CONTROLLER USER MANUAL
HAT552/HAT553 ATS Controller 2020-05-14 Version 1.1 Page 35 of 35
16 FAULT FINDING
Table 27 Fault Finding
Symptom
Possible Solutions
Controller no response with
power
Check DC supply voltage;
Check DC fuse;
Check AC power;
RS485
communication
abnormal
Check whether RS485 positive and negative are correctly connected;
Check RS485 transformer is normal or not;
Check module address in the parameter settings is correct or not;
If above methods are unsuccessful, please try to parallel in 120
Ω resistor
between A and B of controller RS485.
Auxiliary Output Error
Check auxiliary output connecting wire, pay attention to N/O N/C points;
Check output port setting function and output type in parameter settings;
Auxiliary Input Abnormal
Check whether aux. input port is GND connected
when it’s active, and it
shall hung up when it is inactive.
(
NOTE
: The input port will be possibly destroyed when connected with voltage.)
Check the input setting function of parameter settings and active type.
Switch Transfer Abnormal
Check ATS.
Check the connection wirings between the controller and the ATS.
Check switch related parameter settings.
Genset
Start
Control
Abnormal
Check system type settings.
Check output function settings and output type.
Check start/stop function settings of all items.
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