Description
Bently 3500/44M
Technical Specifications:
- Module Form: Full‑height 3500 rack‑slot module
- Input Channel Count: 4 independent configurable channels
- Supported Input Signal: Seismic velocity sensor signal, dynamic pressure sensor signal
- Optimized Algorithm: New‑generation dedicated filtering and calculation algorithm for aeroderivative gas‑turbine working condition
- Alarm Configuration: Independent Alert and Danger alarm threshold for every channel, supports multi‑condition combined‑alarm logic
- Relay Output: Configurable alarm relay contact outputs
- Recorder Output: Individual 4‑20 mA analog recorder output for each channel
- Communication Method: Data exchange through 3500 rack back‑plane with gateway module
- Hot‑Swap Function: Supports powered hot‑swap replacement
- Operating Temperature: ‑30 °C ~ +65 °C
- Storage Temperature: ‑40 °C ~ +85 °C
- Relative Humidity: 5‑95% RH non‑condensing
- Maximum Power Consumption: 13.5 W
- Self‑Diagnosis Function: Comprehensive hardware self‑diagnosis, sensor‑loop fault detection, internal signal‑path diagnosis Functional Features:
- Updated digital hardware platform for aeroderivative gas‑turbine application, higher sampling resolution and wider frequency‑response range.
- Accept seismic velocity sensor and dynamic pressure‑sensor input, simultaneously realize casing vibration and combustion dynamic‑pressure monitoring.
- Supports independent Alert, Danger alarm setting, and complex multi‑condition combined‑alarm logic configuration for gas‑turbine protection requirement.
- Each channel provides 4‑20 mA analog recorder output for external control‑system and recording‑device connection.
- Hot‑swap capability allows module replacement without power‑off of 3500 rack system.
- Front‑panel multi‑color LED indicators clearly show module health status, channel alarm and fault information for fast field troubleshooting.
- Complete software‑based parameter configuration via 3500 rack configuration software, no hardware‑jumper adjustment required.
- Enhanced transient‑signal capture capability, reliably record vibration feature during gas‑turbine start‑up, load variation and trip events.
- Rich diagnostic auxiliary data supports deep‑level gas‑turbine fault analysis cooperating with System‑1 condition‑monitoring software. Application Scenarios: Protection monitoring for various types of aeroderivative gas turbines; gas‑generator and power‑turbine casing vibration monitoring; combustor dynamic pressure monitoring for combined‑cycle power plant; upgrading and retrofitting of existing 3500 rack‑based gas‑turbine monitoring system. Performance Parameters: Measurement accuracy ±0.1% full‑scale; wide frequency response for high‑frequency transient vibration signal; fast alarm response; strong cabinet electromagnetic‑interference resistance; high MTBF for long‑term continuous running. Material Composition: New‑generation mixed‑signal multi‑layer PCB board; high‑performance digital signal‑processing chip; relay assemblies; metal front‑panel; reinforced plastic module frame; gold‑plated rack back‑plane edge connector. Structural Characteristics: Full‑height module dimension matching 3500 rack slot; metal front‑panel with multi‑color LED indicators; rear gold‑plated edge connector for rack back‑plane connection; front removable terminal block for sensor‑input wiring and relay‑output wiring. Working Principle: Seismic sensor or dynamic‑pressure‑sensor analog signals enter module via front‑side terminal block. Conditioning circuit completes signal amplification and filtering. High‑speed ADC converts analog signal to digital data. New‑generation dedicated aeroderivative‑gas‑turbine algorithm executes vibration‑parameter calculation. Measured values compare with configured Alert, Danger threshold and combined‑alarm logic condition, trigger corresponding relay‑alarm action. Measurement and diagnostic data transmits to communication gateway module through rack back‑plane. Recorder circuit converts digital measured value to 4‑20 mA analog output. Comprehensive self‑diagnosis circuit monitors module hardware status and sensor‑loop health continuously. Installation Requirements:
- Insert module into full‑height slot of 3500 rack, push fully seated and fasten front‑panel locking screws.
- Wire seismic sensors, dynamic‑pressure sensors and alarm‑relay output onto front removable terminal block strictly complying with official wiring specification.
- Complete channel‑type definition, range setting, alarm‑threshold and combined‑logic configuration with 3500 rack configuration software, download all parameters to rack hardware.
- Confirm 3500 rack power supply within normal range, observe front‑panel LED status after power‑on. Usage Notes:
- When performing hot‑swap replacement, avoid touching rear gold‑plated edge‑connector contacts while rack is powered.
- All configuration parameters must be downloaded into rack before enabling machinery protection function.
- Do not exceed rated contact load of alarm‑relay terminals. Use external intermediate relay for heavy‑load driving requirement.
- Inspect terminal‑block screw tightness during unit overhaul to prevent signal‑abnormality caused by loose‑contact.
- Module housing must not be disassembled. No on‑site component‑level repair. Replace whole module when hardware fault occurs.
