I have a Okuma LB 15 lathe with OSP5000L-G control and Fanuc AC spindle drive type A06B-6055-H208 with top pcb type A20B-1001-0120. When spindle speed above 3000 rpm, the control gives alarm message 110 ALARM-A SDU 1. In spindle drive, it gives AL-07 alarm. I tried to correct the parameter in the spindle drive using the buttons MODE,UP,DOWN and DATA SET. But, it can not retain the data after power on. Only, it shows the old value. I could not see any data protect switch or jumper in the spindle drive. Can anybody give the procedures ? I do not have the manual for this drive. Can anybody give manual for this drive ?
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