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Turbine Digital Electro-Hydraulic Control SystemDMS3000
Product introduction
As an important equipment of turbine and other rotary machines for monitoring, the DMS3000 is an online modularization and intelligent monitoring system which is intentionally designed to possess high reliability. In conjunction with DMT2000 series transducers, it can be used to precisely and continuously measure vibration, shaft displacement, speed, heat expansion, eccentricity and differential expansion of turbines, hydraulic turbines, fans and compressors. The modularization structure makes system configuration is agile and maintenance is easy.
Features
■ Modularization structure makes functional modules be configured as per the requirements of users and makes the system flexible expansion.
■ Professional hot plug design ensures that on-line plugging module without fault and convenience for system maintenance.
■ The two-channel power supply can switch automatically and two separate external working power supplies to make system run reliably.
■ High reliability processor, FPGA and the exact algorithm can measure data well and truly.
■ Appropriative communication module and standard Modbus-RTU communication protocol make data exchange easy between PCs and DCS system.
■ Each channel has special buffer output for field debugging
■ Multiplex voltage and current outputs
■ High speed measuring and displaying, the maximum measuring speed is up to 20000rpm
■ Display panel combined LCD module and LED is used to display 5-bit digital, streamer tendency display and streamer alarm points indication.
■ The intelligent hand-held programmer and the all digitization parameter adjustment make the locale configuration be more convenient.
■ Special configuration software is able to achieve modules configuration and management.
■ Special data acquisition and data base management software can provide multiplex curves and tendency diagrams to analyze and process data.
Functions
a) Display
■ LCD digitron real time displays measuring value.
■ LCD bar real time displays setpoints of shaft vibration trend
■ LED real time displays channel health, ‘Alert Alarm’ and ‘Danger Alarm’.
■ Indications for Danger Alarming Bypass, Channel Bypass, First-out Alarming.
b) Alarms
■ LED display and relay output of the ‘Alert Alarm’ and ‘Danger Alarm’ is synchronous.
c) Outputs
■ The module provides ‘Alert Alarm’ and ‘Danger Alarm’ contact signal output, adding to DMS3210 series of Relay Modules to output dry contact signals, the contacts can be normal open and normal close. When alarm happens, relay loop energizes on or off will provide.
■ Analog output, corresponding to voltage or current signals to be measured. Selectable signal range (4～20mA/0～20mA), to suit for different DCS inputs.
■ Buffer output is beneficial to field debugging.
d) Others
■ Keep delay when the module powers on，making signal fault judgment to be implemented after self-diagnosis.
■ Provide multipliable alarming modes, including input signals non-alarm, high alarm, low alarm, high-low alarm or high-low span alarm.
■ Hot plugging design ensures that on-line plugging module without fault.
■ All the parameters are digitalization and will be protected when power off.
■ Single module configuration will be implemented via Program port of the module faceplate or held-programmer or PC.
■ The communication module can be the interface with the upper system for data exchanging.
Modules for Turbine Application
