Mitsubishi MELSEC-A series - Page 146

8. TROUBLESHOOTING /MELSEC-A
8.2.3 Incorrect positioning
Check whether positioning is ran-
dom or regular.
I
YES
Recheck backlash and error compensation.
* Check data
A
Operate positioning test procedure
from
AGGPP or AD71TU.
YES
Positioning
OK? c
Check raquence program.
. Check data No. and addresses.
- Check stop signal.
Check present value.
Check for sources of noise kg.
welder, power
SUPPIYI
NO
b
Check motor drive unit etc.
Eliminate source
of noise or screen
AD71 cables etc.
I
Posltioning OK?
+
Take appropriate measures to pre-
vent Interference
by nolse.
i
i
I
I
I
8-1 0
I0 INAl 58101-A