Bently Nevada 3500/32M 149986-02 Relay Control Module

Product Overview: Bently Nevada 3500/32M 149986-02 Relay Control Module

Bently Nevada 3500/32M 149986-02 is a Relay Control Module developed by Bently Nevada. It belongs to the 3500 series of components. The Module is a full-height module with four relay outputs. Any number of Modules can be inserted into any of the slots to the right of the Transient Data Interface Module.

Brand Name: Bently

Model Number: 3500/32M 149986-02

Condition: 100% New and Original

Lead Time: 3-5 Days

Warranty: 1 Year

Key Specification

Core Features & Advantages

• Flexible and Programmable Alarm Logic: The module's standout feature is its fully customizable Alarm Drive Logic. Each of the four relay outputs can be independently programmed using AND/OR logic, with inputs from Alert or Danger statuses, "Not-OK" conditions, or process variables from any monitor channel in the rack. This allows for complex voting logic, such as 2-out-of-3 (2oo3) configurations, to prevent nuisance trips while ensuring reliable protection.

• Robust and Reliable Design: Each relay is epoxy-sealed to protect against contamination and vibration, ensuring reliability in harsh industrial environments. The contacts are rated for 100,000 cycles and feature a built-in 250 Vrms arc suppressor for extended contact life, with each relay being switch-selectable for Normally Energized (NE) or Normally De-energized (ND) operation.

• Seamless System Integration: As a full-height module, it installs directly into the 3500 rack and integrates seamlessly with the 3500 system. It is configured using the standard 3500 Rack Configuration Software, providing a unified engineering experience.

• Support for Functional Safety: This module is TÜV certified for use in functional safety applications. It can achieve SIL 1 in a single relay configuration and SIL 2 in a redundant relay configuration, making it suitable for critical safety functions like emergency shutdowns (ESD).

Typical Applications

The 3500/32M is widely used to execute protection and control logic in critical machinery monitoring systems, such as:

• Turbomachinery Protection: Triggering automatic shutdown relays for steam and gas turbines based on vibration or position thresholds.

• Compressor & Pump Monitoring: Activating alarms and interlocks for compressors and pumps in oil and gas and petrochemical facilities.

• Critical Process Control: Executing trip multiply, alarm inhibit, and rack reset functions to manage and protect complex industrial processes.

Working Principle & Functional Description

The 3500/32M relay module operates based on a digital logic drive mechanism :

1. It receives alarm status signals in real-time from other monitoring modules (displacement, vibration, speed, temperature, etc.) via the 3500 rack backplane bus .

2. The module's internal processor performs complex Boolean operations on these input signals according to the preset logic drive array (AND, OR, or voting logic) .

3. When the operation result meets the trigger condition, the module immediately drives its physical relay coil to actuate, outputting dry contact signals to external control systems (PLC, DCS) .

4. This enables automatic equipment shutdown or alarm protection functions .