Bently Nevada 3500/33 16-Channel Relay Module
1. Overview
The Bently Nevada 3500/33 16-Channel Relay Module is a critical safety and control component within the 3500 Machinery Protection System.
It provides programmable relay outputs for machinery protection, alarm signaling, and shutdown logic in industrial rotating equipment.
2. Key Functions & Features
Relay Outputs for Protection & Control:
Offers 16 independent SPDT (Form C) relay channels, each configurable for Alert/Danger signals, Not-OK status, or custom logic.
Supports 5A/250VAC contacts for driving external devices (e.g., alarms, trip circuits, DCS/PLC inputs).
Programmable Voting Logic:
Each relay channel can be configured with AND/OR logic using inputs from any monitor module (e.g., vibration, speed, temperature).
Enables complex interlocking (e.g., multi-sensor voting for trip decisions).
Integration with 3500 System:
Compatible with 3500/20M (vibration), 3500/50 (speed), and other monitor modules.
Mounts in any slot to the right of the Rack Interface Module (RIM); multiple modules can be used for expanded I/O.
Industrial Reliability:
Hot-swappable design for maintenance without downtime.
Operates in -20°C to +60°C environments with 100,000+ mechanical cycles per relay.
3. Typical Applications
Trip Circuits: Initiates emergency shutdowns for turbines/compressors upon danger signals.
Alarm Annunciation: Triggers lights/horns for abnormal vibration or temperature.
Process Control: Interfaces with DCS/PLC for automated responses (e.g., pump sequencing).
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