[meszarosg]

I do have an alarm code:
203-6 ALARM-A SVP velocity over 2B-AXIS 154F9D67
on our Okuma LR15 (OSP5020) Lathe, and I am far-far away from the book contains the alarm-list
Please help me

[littlerobb]

SERVO PROCESSOR VELOCITY COMMAND OVER

THIS ALARM OCCURS WHEN THE VELOCITY COMMAND CALCULATED BY THE SERVO PROCESSOR EXCEEDS THE PERMISSABLE FOUR TIMES OR OVER IN SUCCESSION.

AS THE PERMISSABLE VALUE, THE VALUE 125% OF THE RAPID FEEDRATE IS USED.

INDEX,AXIS

CHARACTER STRING, NONE

CODE, HEIDECIMAL NUMBER OF THE CHANGE AMOUNT (UNIT: PULSE/3.2 MSEC)

PROBABLE FAULTY LOCATIONS, DC POWER SUPPLY
SERVO AMPLIFIER
BL MOTOR
SERVO DATA

THIS ALARM MAY BE HANDLED IN THE SAME MANNER AS THE DIFF OVER ALARM.

MEASURES TO TAKE, REPLACE THE DEFECTIVE UNIT

This is out of my book, hope it helps, Robert

[OKUMA Tech]

take a look a your BL drives in the elec. cabinet and see what alarm lights are on. I have seen this alarm before most of the time it means the drive is dead, but not always. Take the belt off of the affected drive motor, and see if you can rotate the ballscrew by hand. This will tell you if the drive is overloaded due to a true mechanical overload.

[meszarosg]

Thanks very much

The solution was (I could not believe it) on the BL-D drive card there were two fuses burnt out: after replaced those: problem solved.

The only thing: they LOOK LIKE good fuses, after taken out and measure them: the result was NG!

So right now I am fighting to have a good encoder-zero point and zero offsets (of course I do not have recorded the data...)

If anybody have got more than it is in the OSP manual... it should be REALLY great...