Bently Nevada 3500/50-04-CN 3500 Series Tachometer Module

Description

Designed for integration within the 3500 Machinery Protection System, the 3500/50-04-CN delivers high-reliability tachometer measurements and speed monitoring capabilities. This module processes input signals from various speed sensors to provide rotational speed, acceleration, zero speed, and reverse rotation parameters, serving as a critical component in rotating machinery protection.

The 3500/50-04-CN configuration features an I/O module equipped with internal barriers and internal terminations (Option 04). This integration allows direct interfaces to transducers installed in hazardous environments without requiring auxiliary external barrier hardware. The country-specific agency approval (CN) ensures adherence to regional safety standards for industrial operations.

Features

• Dual-channel speed monitoring and phase reference capability.
• Integrated safety barriers for direct hazardous area transducer connection.
• Internal terminations to streamline field wiring and optimize cabinet space.
• Real-time configuration of speed, acceleration, and peak hold parameters via 3500 software.
• Continuous self-test and diagnostic coverage for enhanced system reliability.

Applications

• Steam, gas, and hydro turbine speed protection.
• Centrifugal and axial compressor shaft monitoring.
• Generator speed and phase reference monitoring.
• Over-speed, zero-speed, and reverse-rotation detection in chemical and hydrocarbon processes.

Technical Specifications

Installation Guidelines

Prior to installing or servicing the 3500/50-04-CN module, ensure that local field wiring protocols for hazardous areas are fully met. The internal safety barriers rely on direct, low-impedance grounding paths to ensure intrinsic safety protection. Maintain routing separation between intrinsically safe transducer wiring and non-intrinsically safe cabling within the enclosure.