We are facing with some serious problem using our newly purchased Fieldbus Siemens positioners SIPART PS2 FF (N1-A413-7519177; **SIPART PS2 FF**, revision name:2.0 ; DEV_REV: 0X02; DD_REV: 0X01) in our control system which is Yokogawa's CS3000 R.3.08.50.
We assign the positioners to the segment and they will be assigned and work without any problem, but after several hours (or even days) we lose the communication with the control valves and the face plates in the control system change to CNF (connection failure). We then have to disconnect and re-connect the positioners' cable to put it again into work.
The problem is happening for nearly all Siemens positioners and the positioners are all new. The segments are having 8 Fieldbus instruments, two of which are Siemens positioners. When the Siemens positioners become faulty, all other instruments continue working properly.
We have replaced the faulty positioners with another brand (ABB), it works without any problem. Does anybody know what is the problem and how we can solve it?
We assign the positioners to the segment and they will be assigned and work without any problem, but after several hours (or even days) we lose the communication with the control valves and the face plates in the control system change to CNF (connection failure). We then have to disconnect and re-connect the positioners' cable to put it again into work.
The problem is happening for nearly all Siemens positioners and the positioners are all new. The segments are having 8 Fieldbus instruments, two of which are Siemens positioners. When the Siemens positioners become faulty, all other instruments continue working properly.
We have replaced the faulty positioners with another brand (ABB), it works without any problem. Does anybody know what is the problem and how we can solve it?