17
Chapter 6 Abnormal diagnosis and treatment
PB200 braking unit has 2 types of protection, once the fault occurs, the protection function act,
braking unit stops working, and display the fault type on the display panel. Users can follow the tips
in this section to check firstly, analysis the reason of fault, and find a solution.
If fault occurs during debugging, refer to the troubleshooting and protection functions list in Table 6-
1 to confirm fault type and troubleshooting method. If you can not find the troubleshooting method
during the debugging process, please contact POWTRAN technical service personnel.
Table 6-1 List of braking unit fault diagnosis and protection functions:
No.
Error
code
Error type
Possible causes
Solutions
1
E.SHo
Braking
feedback
fault (IGBT
short
circuit)
1.Braking unit output
circuit short-circuit
2.Brake unit internal wiring loose.
3.Drive circuit is abnormal
4.Inverter module is
abnormal
1.Exclude peripheral
faults
2. Plug all the cables well
3. Seek technical support
4. Seek technical support
2
E.oH
Module is
overheating
1.Air duct get blockage
2.Fan damaged
3.Ambient temperature is too high
4.Module thermistor
Is damaged
5.Inverter module is damage
1.Clean the air duct
2.Replace the fan
3.Reduce ambient
temperature
4.Replace thermistor
5.Replace the inverter
module
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