[rajappa]

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 ?

[underthetire]

Been a long time, think you hold all 4 buttons until display flashes, change parameter you want, hold data set till display flashes(3 second)

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[rajappa]

Thanks Underthetire. I am actually able to change the particular parameter after pressing the 4 buttons. After entering the parameter, I held the DATA SET button until the display shows '8888' as mentioned in one of the sites here. The data remains as changed until I make power off and on. After power off and on, the particular parameter value goes back to its previous value.

[rajappa]

I could find a small jumper which can be put in 'SET' position from 'DRIVE' position to store the parameters. But, I have one more problem in the spindle drive. I will start a new thread for this. Thanks