Okuma Alarm-A 8561 Grinding whl spindle motor overload
The load detection watt meter for the Whetstone detected overload.
1->H2 alarm signal of watt meter turned ON during whetstone rotation.
2->H1 alarm signal of watt meter turned ON longer than the time set due to overload during G00 commanded.
Probable Faulty Locations
a) Setting error of watt meter H1 or H2 signal.
b) Setting error of whetstone speed.
Measures to Take
a) Confirm H1(overload) or H2(gap) signal of watt meter.
b) Change the faulty watt meter or transformer.