HAT880 SERIES DUAL POWER BYPASS CONTROLLER USER MANUAL
HAT880 Series Dual Power Bypass Controller 2019-07-11 Version1.1 Page 49 of 49
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TROUBLE SHOOTING
Table 25 - Troubleshooting
Symptoms
Possible Solutions
Controller no response with
power.
Check DC voltage.
Check DC fuse.
Check AC Power supply.
RS485 communication is
abnormal.
Check RS485’s connections of A and B is reversely connected or not.
Check RS485 transfer model is damaged or not.
Check the module address in parameter setting is correct or not.
If above methods can't solve the problem, parallel connecting
120Ω
resistor between RS485 A terminal and B terminal is recommended.
Auxiliary Output Error
Check auxiliary output wiring, and pay attention to N/O contactor and N/C
contactor.
Check the output functions and output type settings in parameter
settings.
Auxiliary Input Abnormal
Ensure that the auxiliary input is soundly connected to GND when it’s
active, meanwhile hung up when it is inactive. (
NOTE: The input port
will be possibly destroyed when connected with high voltage)
Check the input functions and active input type settings in parameter
settings.
Genset running while ATS
not transfer
Check ATS.
Check the connection wirings between the controller and the ATS.
Check ATS parameter settings.
Genset Start Abnormal
Check system type setting.
Check the output function settings and output types in parameters
settings.
Check all Start/Stop settings.
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