METSO A413144 plc control module
METSO A413144 plc control module
Turbine Generator Machine Protection
Monitoring of Turbine-Generators with
measurements of:– thrust position with eddy probes– shaft movement with eddy probes– case expansion with eddy probes or LVDT´s– differential expansion with eddy probes, single or
swap-over– shaft eccentricity with eddy probes– absolute vibration with accelerometers or velomitors
Designed according to API670 standard– Protective monitoring by the I/O cards– Cards operate even if connection into PCS is lost– Redundant power supply unit– Redundancy supported for protection only solution
Technical Parameters (Technical Data)
| Parameter | Specification |
| Component Type | Pneumatic Relay / Amplifier Module |
| Supply Pressure Range | 1.4 – 8.0 bar (20 – 115 psi) |
| Air Delivery Capacity | Optimized for fast stroking (approx. 8–18 $Nm^3/h$ depending on supply) |
| Steady-state Air Consumption | Very Low (< 0.1 $Nm^3/h$ at 4 bar) |
| Operating Medium | Filtered, non-lubricated air or sweet natural gas |
| Filtration Requirement | < 40 $\mu m$ (5 $\mu m$ recommended for longevity) |
| Temperature Range | -40°C to +85°C (-40°F to +185°F) |
| Housing Material | High-grade Aluminum with corrosion-resistant coating |
Valmet DNA Turbine Protection I/O
Machine protection
AIF4E
Eddy current measurement for shaft
position or vibration measurement- 4 input channels- each channel configurable for
both static and dynamic values,- 2 calculated values per
channel supported- 100 ms update rate (API670)- raw signal sample buffers for
diagnostic application- 4 output channels 4 – 20 mA ,
any value to any output
Machine protection
AIF4V
Absolute vibration
measurement using
accelerometers or velomitors
Machine protection
AIT4L
Casing absolute expansion and
valve position- 4 input channels- each channel configurable for
2 calculated values per
channel, rms or peak, vibration
acceleration or velocity- 100 ms update rate (API670)- raw signal sample buffers for
diagnostic application- 4 output channels 4 – 20 mA ,
any value to any output
4 input channels
Isolation- Field to system 1500 VAC- Between channels 1500 VAC- 4 LVDT/RVDT input channels- 5 and 6 wire LVDT/RVDT support- all electronics in card, only LVDT
sensor
out in the field- input update interval 1 ms- settable measurement
Controller and power supply
functions
ACN MR, 2x IPSP- redundancy in HW and SW- redundant power supply- self diagnostic- communication to 3rd party (Modbus TCP, Profibus, etc)-
integrated part of Valmet DNA system network- alarms and events- configuration of I/O cards with EAS SW-card parameter download when card is changes(hot swap)- optional diagnostic