Description
Bently 3500/50‑01‑00 (133442‑01)
- Key Features: Two independent galvanic‑isolated tachometer input channels; accepts magnetic‑pickup and proximity‑probe pulse‑input; overspeed, underspeed and reverse‑rotation alarm functions; configurable speed‑band alarming; peak‑speed value capture and latch‑storage function; internal termination circuit eliminates external I/O module requirement; hot‑swap capable.
- Technical Specifications & Performance Parameters
- Input channel quantity: 2 independent channels
- Maximum measurable rotational speed: 200 000 RPM
- Typical power consumption: 4.3 W
- Operating temperature: 0 ℃ ~ +60 ℃
- Storage temperature: ‑40 ℃ ~ +85 ℃
- Weight: 0.29 kg
- Material Composition: FR‑4 multilayer printed circuit board; high‑speed pulse‑processing FPGA chip; galvanic‑isolation magnetic components; surge‑suppression circuit elements; gold‑plated back‑plane edge connector; metal front‑panel with multi‑color LED indicators; integrated internal‑termination circuit components; reinforced plastic mechanical‑lock latch.
- Structural Features: Half‑height plug‑in rack‑module mechanical form‑factor; front‑panel LED indicators for power‑supply status, channel‑pulse‑signal presence and alarm‑conditions; rear‑side gold‑plated edge connector mates with rack‑back‑plane bus; signal‑termination circuit fully integrated inside module body; no external separate I/O hardware required; mechanical locking latch for rack‑slot fixation.
- Working Principle: Pulse‑trigger signal generated by field‑mounted speed‑sensor enters module through rack‑back‑plane internal termination circuit. On‑board high‑speed digital circuit captures pulse‑edge events, calculates real‑time shaft rotational‑speed, judges rotation‑direction and computes speed‑change‑rate. Measured values compare with user‑configured alarm‑threshold parameters. Alarm‑status information transmits onto rack‑back‑plane bus to relay‑modules and communication‑gateway modules. Peak‑speed value latches inside module memory for post‑fault review purpose.
- Application Scenarios: Dual‑channel shaft‑speed‑monitoring for medium‑and‑large‑size turbomachinery; overspeed‑and‑underspeed‑alarm implementation for turbine‑compressor units; reverse‑rotation detection for rotating‑equipment; machinery‑start‑up acceleration‑rate monitoring; power‑plant and petrochemical‑plant TSI system with internal‑termination wiring architecture.
- Installation Requirements: Insert half‑height tachometer module into corresponding 3500 rack slot; fully engage mechanical locking latch; configure pulse‑per‑revolution parameter, alarm thresholds and trigger‑threshold voltage inside rack‑configuration software; perform shaft‑barring test to validate real‑time speed‑reading accuracy; verify alarm‑logic response via simulation‑test function.
- Usage Notes: Comply with ESD static‑electric‑protection requirements during module installation and replacement; avoid unauthorized hot‑swap operation; observe front‑panel signal‑LED status during daily equipment‑inspection rounds; preserve complete rack‑configuration‑backup‑file after modifying tachometer‑related parameters; inspect field‑sensor wiring integrity during regular overhaul cycles.
