Bently Nevada 3500/53 133388-01 Overspeed Detection Module

Product Description

The 3500/53 (Part Number: 133388-01) is a high-integrity Electronic Overspeed Detection Module designed for the Bently Nevada 3500 Machinery Protection System. This module, often utilized in redundant configurations, provides critical speed monitoring and emergency shutdown capabilities for turbines, compressors, and other large rotating assets. The 3500/53 (Model: 3500/53) is engineered to capture high-frequency pulse inputs from magnetic pickups or proximity probes, processing them with sub-millisecond precision to detect overspeed or zero-speed conditions before mechanical damage occurs.

As a core safety component, the 133388-01 (3500/53) features independent tachometer channels that support 2-out-of-3 (2oo3) voting logic when multiple modules are installed in a 3500 rack. This ensures maximum operational uptime by preventing nuisance trips while maintaining strict adherence to E-E-A-T (Expertise, Authoritativeness, and Trustworthiness) standards for industrial safety systems. The module also provides proportional 4–20 mA outputs for continuous speed indication to plant DCS or SCADA systems, along with integrated self-diagnostics to verify transducer and internal circuit health.

Technical Specifications