centrum 2000 punch press problem

Greetings all,

I am having problem with Murata centrum 2000 punch and the problem is that the press turns off by itself and even the command is on, it will stay for a while than turns on and repeats this all the time which does not allow you to wok.

The problem first appeared when we changed the hydraulic oil the last time , it may have poblem with pressure but no alarm is shown on display .

If anyone could help

Thanks

1. If the machine is shut down, the power supply is suspect. ( fanuc side )
2. dc 24 power supply is suspect ( machine side )