Dear friends,
I am having a big problem with Air Oil Lubrication alarm 1728 code 23 on Okuma MB46VAE with OSP E100M. Acc to this alarm, more then 1 second passes between pump activation and pressure switch reaction.
We have replaced Pressure Switch - no result.
With oscilloscope we have scanned time lag between pump start and pressure switch and it is less then 1 sec (0,5-0,6) and even then alarm appears and machine stops working...
We have replaced input interface for pressure signal - no result.
We have replaced output interface for pressure signal - no result.
This alarm shows sometimes 2-3 times a day but sometimes every 6 min after lubrication interval.
Can someone help us to solve this problem?
Thanks in advance