Bently Nevada 136294-01 3500 Series Isolated 4-20mA Process Variable I/O Module

Product Overview

The Bently Nevada 136294-01 is a high-performance I/O module specifically engineered for the 3500 Series Machinery Protection System. This module accepts Isolated 4-20mA Process Variable (PV) inputs, allowing the 3500 rack to integrate third-party transmitter signals—such as pressure, flow, or temperature—directly into its monitoring architecture. By providing galvanic isolation, this module protects the rack's sensitive backplane from field-side electrical surges and ground loops. We supply this component as 100% Brand New and factory-original, ensuring mission-critical data integrity for your industrial assets.

Technical Specifications

Engineering Advantages

• Elimination of Ground Loops: The 136294-01 utilizes high-grade opto-isolators to decouple field signals from the internal logic. This architecture prevents common-mode noise and ground loop currents from corrupting the vibration data or damaging the monitor modules.

• Universal Transmitter Integration: This module allows the 3500 system to act as a centralized hub. It scales standard 4-20mA signals into engineering units, enabling operators to view process data alongside vibration waveforms for comprehensive machine health analysis.

• Streamlined Rack Footprint: The slim 2.5 cm profile allows for high-density installation. It fits perfectly into the rear I/O slots of the 3500 chassis, maximizing the functionality of each rack without requiring external signal conditioners or secondary enclosures.

• Industrial EMI Hardening: Bently Nevada designs this module to exceed CE and IEC requirements for electromagnetic compatibility. It maintains signal accuracy even when routed through cable trays situated near high-power variable frequency drives (VFDs).

FAQs

• Does the 136294-01 provide power to the 4-20mA loop?

  This module typically acts as a passive receiver for isolated signals. You must ensure the field transmitter or an external power supply drives the 4-20mA loop. Refer to your specific 3500 monitor configuration for loop-power wiring options.

• Which monitor module does this I/O card pair with?

  The 136294-01 generally pairs with the 3500/42M Proximitor/Seismic Monitor or the 3500/40M Proximitor Monitor when configured for Process Variable (PV) inputs. Always verify compatibility in the 3500 Rack Configuration Software.

• How do I confirm the module is "Brand New"?

  We ship the 136294-01 in its original Bently Nevada anti-static packaging with intact factory seals. Each unit includes a unique serial number for full traceability and a certificate of origin from the United States.

• What happens if a field signal exceeds 20mA?

  The module includes over-range protection. While it accurately tracks signals slightly above 20mA for diagnostic purposes, internal clamping circuits prevent excessive current from damaging the input circuitry.