Hitachi SJ300 用户手册

 

 

 
In general, the first step to troubleshooting should be to inspect the status LEDs on the SJ-EN board, in addition 
to the inverter operator/keypad display. These will give valuable clues to the nature of the problem. 
 
In addition, the inverter operator/keypad will provide diagnostic information for certain types of errors. Error 
codes for the option boards will have the format of: 

E6X.X

 for a board installed in option slot 1, or 

E7X.X

 for a board installed in option slot 2. The number 

to the right of the decimal point indicates the drive status at the time of trip, as follows: 
 

EXX.0 

At reset 

EXX.1 

At stop 

EXX.2 

During 
deceleration 

EXX.3 

At constant 
speed 

EXX.4 

During 
acceleration 

EXX.5 

f0 Stop 

EXX.6 

At starting 

EXX.7 

During DC 
injection 
braking 

EXX.8 

During overload 
restriction 

 
 
The digit immediately to the left of the decimal point has the following meaning: 
 

 

Defective 
connection 

Connectors (plugs 
& jacks), cable 

Replace or repair; 
press STOP/RESET 
on inverter keypad 

PC not powered up 
or not connected to 
inverter 

That PC is powered 
on and connected 

Press STOP/RESET 
on inverter keypad 

EX0.X

 

Ethernet Communication 
Error 

Network 
configuration error 

Verify proper 
Ethernet setup of 
SJ-EN and master 
device  

Reconfigure 
incorrect settings. 

Option board ajar or 
loose 

Verify board is 
properly seated in 
connector 

Remove and reseat 
board 

Board lockup 

Check status LEDs 

Press STOP/RESET 
key on inverter or 
cycle power 

EX9.X 

Internal Communication 
Error (between SJ-EN and 
inverter) 

Board defective 

Check status LEDs 

Replace SJ-EN 

T T T T  

Inverter Mismatch 
(blinking display as shown) 

Inverter firmware 
version not 
compatible with 
SJ-EN option board 

Inverter 
Manufacturing 
Number for version 
(see Page 7) 

Replace Inverter 
with later version 

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