Overview:

The Bently Nevada 135137-01 is a specialized Position I/O Module designed for use within the 3500/45 Position Monitor System in the Bently Nevada 3500 Series Machinery Protection System. This rear-panel module is integral for applications that require precise position measurements, including valve positions, machine casing expansion, and rotor-stator differential expansion. The 135137-01 offers Discrete Input functionality, enabling the system to accept contact closures for specific control functions like zeroing, bypassing, and alarm resets.

Key Features & Capabilities:

1. Precision Position Measurement:
   The module is engineered to interface with various position transducers, including LVDTs (Linear Variable Differential Transformers), RVDTs (Rotary Variable Differential Transformers), and Potentiometers, making it highly adaptable for numerous position monitoring applications.

2. Discrete Inputs for Control Functions:
   The 135137-01 includes discrete input terminals to perform vital functions such as:

• Zeroing: Establishes a reference point for position measurements, essential during machine shutdown.

• Inhibit/Bypass: Disables certain operations temporarily.

• External Reset: Resets latched alarms to return the system to normal operation.

3. Signal Conditioning:
   The module processes raw analog signals from connected position sensors and converts them into digital data, which the 3500/45 Monitor can then evaluate for protection and monitoring.

4. Reliability & Redundancy:

• TMR (Triple Modular Redundancy): Ensures system reliability when used in certain rack configurations.

• Continuous Diagnostics: The module monitors the integrity of the connected transducer wiring, providing real-time fault status feedback (OK/Not OK).

5. I/O Connection:
   The 135137-01 features Euro-style terminal blocks for easy, secure connections to the system. These terminal blocks are removable for easy installation and maintenance.

Technical Specifications:

Applications:

The Bently Nevada 135137-01 Position I/O Module is ideal for a wide range of industrial machinery protection systems, including:

• Valve Position Monitoring: Accurate tracking of steam and process valve positions.

• Machine Expansion Monitoring: Measuring the thermal growth of machine components such as casings.

• Rotor-Stator Differential Expansion: Ensuring the safety and operational limits of rotating machinery.

• Critical Data Monitoring: Continuously comparing critical machine data for real-time monitoring and protection.

Frequently Asked Questions (FAQ):

Q1: What types of sensors can be used with the 135137-01?

The 135137-01 supports LVDTs, RVDTs, and potentiometers, making it suitable for various industrial position measurement applications.

Q2: How does the Discrete Input feature benefit system control?

The Discrete Inputs allow for external contact closures to trigger specific actions, such as resetting alarms, adjusting position references, or inhibiting specific functions during machine start-up or maintenance.

Q3: What is the purpose of the Euro-style terminal blocks?

The Euro-style terminal blocks provide a secure and easily removable connection for wiring, simplifying installation, maintenance, and troubleshooting.