Bently Nevada 3500/33 149986-01 16-Channel Relay Module

Description

The 3500/33 with spare part number 149986-01 is a full-height module that provides 16 independent programmable relay outputs for machinery protection and control switching. This 3500/33 149986-01 module functions within the 3500 Series Machinery Protection System and installs into any standard slot to the right of the Transient Data Interface (TDI) module. Each relay output features independent voting logic configuration and dedicated Alarm Drive Logic, which processes alert, danger, and Not-OK statuses derived from any combination of monitor channels across the rack via the configuration software. Internal communication link tracking is visually monitored via integrated front panel status indicators.

Features

• 16 fully independent single-pole double-throw (SPDT) relay output channels.
• Custom voting logic and Alarm Drive Logic supporting complex AND/OR logic configurations.
• Integrated onboard 250 Vrms arc suppressors installed as a standard protection feature.
• Switch-selectable operations for Normally De-energized (ND) or Normally Energized (NE) modes in groups of four channels.
• Visual status verification via OK, TX/RX, and individual channel alarm LEDs.

Applications

• Automated machinery trip and emergency shutdown logic initialization.
• Interlocking and annunciator panel control in heavy industrial processing.
• Critical alarm state relay signaling for turbines, large pumps, and industrial compressors.

Technical Specifications

Installation Guidelines

• Slot Placement: Seat the full-height main control module into any available chassis slot located directly to the right of the primary TDI module.
• Redundant Pairs: Pair the main front-panel module with its corresponding 16-channel relay I/O module positioned directly behind it in the rear chassis space.
• Logic Programming: Configure the voting logic structures and operational parameters via the 3500 Rack Configuration Software prior to putting the instrumentation loop online.
• Operation Mode Setup: Set the physical switches to select between Normally De-energized (ND) and Normally Energized (NE) setups for each four-channel group based on plant safety specifications.
• Hazardous Voltage Warning: Ensure all field terminal wiring points are completely isolated from source power lines prior to installation or maintenance to eliminate high-voltage shock risks.
• Explosion Hazard Precaution: Do not connect or disconnect any components or field terminations while the active instrumentation circuit is live unless the surrounding zone is verified to be non-hazardous.