Description
Bently 3500/53‑03‑01
Technical Specifications:
- Input signal: Accept proximity probe and magnetic pickup tachometer signal, input range +10.0V ~ ‑24.0V
- Input impedance: 20kΩ
- Typical power consumption: 8.0W
- Operating ambient temperature: ‑40°C ~ +60°C
- Storage temperature: ‑40°C ~ +85°C
- Safety compliance: API‑670, API‑612 overspeed protection standard Functional Features:
- Real‑time high‑precision rotational speed measurement for rotating shafts
- Supports 2‑out‑of‑2, 2‑out‑of‑3 voting protection system architecture
- Built‑in complete hardware self‑diagnosis mechanism for sensor open‑circuit, short‑circuit and module internal fault
- Software configurable alarm, warning and trip set‑points
- Fault diagnostic information can upload to upper monitoring system through communication gateway module Application Scenarios: Petrochemical compressors, power generation gas turbine, steam turbine, turbo‑expander, large‑scale rotating unit which requires high‑grade overspeed safety interlock protection, applicable for on‑shore plant and offshore platform working environment Performance Parameters: Continuous real‑time speed sampling; fast overspeed response; self‑diagnosis runs all‑time; requires redundant rack power supply configuration for safety operation Material Composition: Front housing: Anodized aluminum alloy; circuit board: Industrial FR‑4 PCB; connector: Gold‑plated high‑reliability backplane connector; electronic components: Industrial high‑temperature resistant grade components for harsh industrial environment Structural Characteristics: Standard full‑height plug‑in card compatible with 3500 rack slot; front panel with terminal interfaces and LED status indicators; rear high‑density backplane connector for rack bus data exchange; locking screw for anti‑vibration fixation Working Principle: The tachometer sensor outputs pulse signals related to shaft rotation, the module performs signal conditioning, pulse counting and frequency‑to‑speed conversion. Compare real‑time rotational speed with preset threshold value, execute alarm or trip output when over‑limit condition occurs, cooperate with other overspeed modules to complete voting judgment logic for protection action。 Installation Requirements:
- Wear anti‑static protection when installing into 3500 rack slot
- Rack must deploy redundant dual power supply as mandatory safety condition
- Match corresponding rear termination I/O hardware according to variant code
- Sensor signal shielded cables shall be single‑point grounded, separate routing away from high‑voltage power lines
- Verify rack firmware version compatibility before commissioning Usage Precautions:
- Forbid over‑range input signal access to prevent circuit burnout
- Overspeed protection parameters modification shall be performed under unit stop‑state as much as possible
- Periodically inspect module indicator light and event log for hidden fault
- Avoid hot‑plugging while the protection system is in online protection working status
- Cabinet shall maintain good ventilation, prevent moisture, corrosive gas and heavy dust erosion
