HAT828 High Speed ATS Controller User Manual Page 56 of 56
18
TROUBLESHOOTING
Table 23 – Troubleshooting
Symptoms
Possible Solutions
Controller No Response
Check DC voltage;
Check DC fuse;
Check AC power supply.
RS485
Communication
Abnormal
Check RS485’s positive and negative are correctly connected or not;
Check RS485 converter (if configured) is normal or not;
Check communication parameter setting in parameters configuration is
correct or not;
If above methods can't solve the problem, parallel connect 120Ω resistor
between RS485 A terminal and B terminal is recommended.
Auxiliary Output Error
Check auxiliary output port connections, pay attention to normally open
contact and normally close contact;
Check the output port function settings and output types in parameters
configuration.
Auxiliary Input Abnormal
Check whether the auxiliary input is soundly connected to GND when it is
active, while hung up when it is inactive (
NOTE:
The input port will be possibly
damaged when connected with high voltage.
);
Check the input port function settings and active types in parameters
configuration.
ATS Transfer Abnormal
Check ATS;
Check the connection wirings between controller and ATS;
Check ATS related parameter setting.
Fast Transfer Time Over
20ms
Check controller AC power supply is normal or not;
Transfer time of high speed switch must be less than 5ms.
Genset Start Abnormal
Check system type setting;
Check the output port function settings and output types;
Check all Start/Stop settings.
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