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Brand: Bently Nevada
Series: 3500 Series Machinery Protection & Condition Monitoring System
Model: 3500/32M 149986‑02
Type: Four‑Channel Relay Output Module (Full‑Height)
The 3500/32M 149986‑02 is a high-performance, full-height relay module designed for the 3500 rack-based protection system. It supplies four independent SPDT relay outputs, each configurable with “Alarm Drive Logic” using AND/OR voting logic via rack configuration software. This module is epoxy-sealed, features integrated arc suppression, and includes front-panel LEDs for real-time diagnostics—making it ideal for critical protection tasks under harsh conditions.
Alarm and shutdown control for rotating machinery: turbines, compressors, and generators
Safety logic implementation in petrochemical, power, and water treatment plants
Automation logic for valve and pump control in industrial processing
Protective relay outputs in harsh industrial or nuclear environments
Configurable Logic: Supports independent AND/OR voting logic per channel
Embedded Arc Suppression: Rated up to 250 Vrms for enhanced electrical safety
Diagnostic Feedback: LEDs to indicate module health, communications, and per-channel alarms
Robust Design: Epoxy-sealed for protection in temperatures from –30 °C to +65 °C and high humidity environments
Modular Expansion: Easily installed or replaced within the 3500 rack without disrupting operations
| Parameter | Specification |
|---|---|
| Model | 3500/32M 149986‑02 |
| Relay Outputs | 4 SPDT relays, each independently configurable |
| Contact Life | ~100,000 cycles @ 5 A, 24 V DC or 240 V AC |
| Arc Suppressor | Built-in, up to 250 Vrms |
| LED Indicators | OK, TX/RX communication, channel alarms |
| Power Consumption | ~5.8 W typical |
| Operating Temperature | –30 °C to +65 °C |
| Storage Temperature | –40 °C to +85 °C |
| Humidity Tolerance | Up to 95% non‑condensing |
| Dimensions (H × W × D) | 241 mm × 24.4 mm × 242 mm |
| Weight | ~0.7 kg |
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/32 125712‑01 | Earlier four-channel relay output module | 241 × 24.4 × 99.1 | ~0.7 |
| 3500/33 | Sixteen-channel relay output module | Full-height format | ~1.2 |
| 3500/34 TMR | Triple-Modular Redundant (TMR) relay module | Larger size | ~1.3 |
| 3500/25M 149369‑01 | Enhanced Keyphasor module for phase reference | Compact size | ~0.43 |
| 3500/42M | Multi-channel vibration monitor module | Full-height format | ~0.9 |
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/15 | Power input module (AC/DC) | 140 × 80 × 50 | ~0.4 |
| 3500/25 | Keyphasor phase synchronization module | 140 × 80 × 50 | ~0.5 |
| 3500/40M | Displacement/velocity monitoring module | 220 × 180 × 95 | ~1.2 |
| 3500/44M | Gas turbine vibration monitoring module | 260 × 258 × 240 | ~0.8 |
| 3500/53 | Overspeed detection module | 140 × 80 × 50 | ~0.5 |
Q1: What is the primary role of the 3500/32M 149986‑02?
A1: It provides four independent, configurable relay outputs for protection logic in the 3500 system.
Q2: Can each relay output be programmed differently?
A2: Yes, each channel supports separate AND/OR alarm logic.
Q3: What is the life expectancy of the relay contacts?
A3: Rated for approximately 100,000 cycles at full load.
Q4: Does it include arc protection?
A4: Yes—built-in arc suppression rated up to 250 Vrms.
Q5: What diagnostic features are available?
A5: LEDs indicate module status, communication health, and channel-specific alarm conditions.
Q6: What are the operating environmental conditions?
A6: It operates reliably between –30 °C and +65 °C, and can be stored from –40 °C to +85 °C at up to 95% humidity non-condensing.
Q7: What is its typical power consumption?
A7: Approximately 5.8 W under normal usage.
Q8: Where is this module installed in the 3500 rack?
A8: In a full-height slot right of the Transient Data Interface.
Q9: Can multiple modules be installed in the same rack?
A9: Yes—modules can be added for expanded relay output configurations.
Q10: What are the physical dimensions and weight?
A10: Measures about 241 × 24.4 × 242 mm and weighs around 0.7 kg.