METSO A413325 Rack module

METSO   A413325   Rack module

Turbine vibration analysis

Principles ( on top of protection solution)

Further scalar values are calculated from signals– for improved indication of developing faults, to have longer warning time and planning tome for

actionse)– like; 1x+phase, 2x+phase, 0.5x, Smax

Also vector type datas ( signals, spectrums, orbit plots) are provided– for vibration specialist to make a detailed analysi of situation and severity of possible fault

Techically this means– a process controller with vibration calculation functions in the end of the I/O group– history database into which measurements are collected (process historian)

trends, spectrum, etc histories

A413325

steady state data and run-up/coast data can be shown separately, so run-ups where you run

through turbine critical speeds can be verified and compared to earlier run-ups as events– additional tools into DNA Operate for follow-up  and reaction into alarms (operators) and also

vibration analysis tools– vibration versus process status is easy to compare since histories are in same database

Valmet DNA Machine Monitoring

System technology for auxiliary machines (BOP), non-protective

• Data processing in process controller- ACN CS, ACN RT, ACN MR

• ACN I/O modules, diagnostic only- Two 8-channel I/O units for fast dynamic

measurements (AIF8V and AIF8T)- Max. 128 channels per I/O group, 2 pcs MBI8- Several I/O groups can be connected to one

ACN- ACN I/O are M120 series- Rules of thumb (PCS sizing, RAM based)- one full I/O group with MR G2- but max 11 cards if MR in the I/O group- Two full I/O groups per ACN CS- Three full I/O groups per ACN RT G4

Valmet DNA Machine Monitoring

System technology for auxiliary machines (BOP), protective (API 670 type)

• ACN I/O modules, with protection calculation-AIF4V, AIF4E cards ( like for turbines)-Max. 16 cards / group ( 64 channels ) with

2xMBI8-Several I/O groups can be connected to one

ACN-ACN I/O are M120 series

•Diagnostic data processing in process controller-ACN CS, ACN RT, ACN MR-For diagnostics, rules of thumb (PCS sizing, RAM

based)-Two full I/O groups per ACN CS-one full I/O group with MR G2-but max 11 cards if MR in the I/O group-Three full I/O groups per ACN RT G

Possible signals:

•Vibration (IEPE)

•Shaft movement(eddy probe)

•Trigger (RTS-xxx)

•General analog (mA or V)

Connection into DNA MM:

•Star Ethernet (I/O bus)

•Chained I/O bus

•POE (I/O bus), single line

•Wireless Ethernet (I/O bus