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- Bently Nevada
- 3500/32 125720-01
- 4-Channel Relay I/O Module
- USA
- 241 mm × 24.4 mm × 99.1 mm
- 0.4kg
- Xiamen, China
- New & In Stock
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Product Overview
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Brand: Bently Nevada
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Series: 3500 Series Machinery Protection & Condition Monitoring System
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Model: 3500/32M 125720‑01
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Type: Full‑Height, Four‑Channel Relay Output Module (I/O)
Product Description
The 3500/32M 125720‑01 is a full‑height, four‑channel relay I/O module built for rugged industrial environments. Each channel houses a user‑configurable SPDT (Single-Pole, Double-Throw) relay, allowing flexible logic output for alarms and shutdowns. Integrated relay logic supports programmable AND/OR and voting configurations, making it ideal for complex protection scenarios across rotating machinery and process automation systems.
The module features robust isolation, epoxy-sealed circuitry, arc suppression (up to 250 Vrms), and multiple diagnostic LEDs for system health and communication visibility. It’s engineered to fit seamlessly into the 3500 rack architecture to the right of the interface module, enabling modular expansion and straightforward integration.
Applications
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Rotating machinery protection (turbines, compressors, generators)
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Automated shutdown control in oil & gas, petrochemical, and power generation
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Manufacturing line motor protection and alarm logic control
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Water treatment and pump station protection
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Any scenario requiring reliable, programmable trip/alarm outputs with redundancy
Product Advantages
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Independent Channels: Each of four relays is individually programmable via AND/OR logic for refined control.
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Electrical Protection: Offers arc suppression and rugged insulation to extend relay life.
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Diagnostic Feedback: Front LEDs for OK, TX/RX communication, and per-channel alarms simplify troubleshooting.
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Robust Design: Epoxy-sealed and rated for industrial temperatures and humidity—engineered to endure harsh conditions.
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Modular Expansion: Additional modules can be added to scale logic and protection capability within the same rack.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 3500/32M 125720‑01 |
| Channels | 4 relay channels (SPDT each, configured as DPDT logic) |
| Contact Rating | Rated at 5 A, 24 V DC or 120 V AC |
| Arc Suppression | 250 Vrms |
| Diagnostic LEDs | OK, TX/RX, CH Alarm indicators |
| Power Consumption | ~5.8 W typical |
| Operating Temp. Range | –30 °C to +65 °C |
| Storage Temp. Range | –40 °C to +85 °C |
| Humidity | Up to 95%, non‑condensing |
| Dimensions (H × W × D) | 241 mm × 24.4 mm × 99.1 mm |
| Weight | ~0.4 kg |
Related or Similar Models (Same Series)
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/32 125712‑01 | Four‑channel relay module (earlier version) | N/A | N/A |
| 3500/33 | Sixteen‑channel relay module for extended I/O | N/A | ~1.2 |
| 3500/34 TMR | Triple Modular Redundancy (TMR) relay module | N/A | ~1.3 |
| 3500/25M 149369‑01 | Enhanced Keyphasor for phase reference signals | N/A | ~0.43 |
| 3500/42M | Multi‑channel vibration monitor (Proximitor inputs) | N/A | ~0.9 |
Popular Models from the Same Brand
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/15 | AC/DC power input module | 140 × 80 × 50 | ~0.4 |
| 3500/25 | Keyphasor module (phase signal) | 140 × 80 × 50 | ~0.5 |
| 3500/40M | Displacement / Velocity monitor | 220 × 180 × 95 | ~1.2 |
| 3500/44M | Aeroderivative GT vibration monitor | 260 × 258 × 240 | ~0.8 |
| 3500/53 | Overspeed detection module | 140 × 80 × 50 | ~0.5 |
Frequently Asked Questions (FAQ)
Q1: What is the primary function of the 3500/32M 125720‑01?
A1: It provides four configurable relay outputs for machinery alarm and trip logic within the 3500 protection system.
Q2: Can each relay be independently configured?
A2: Yes. Each of the four channels supports independent logic configuration using AND/OR logic.
Q3: What is the relay contact rating?
A3: Each relay can carry 5 A at 24 V DC or 120 V AC, with arc suppression up to 250 Vrms.
Q4: Is this module suitable for harsh environments?
A4: Yes. It is epoxy-sealed, isolated, and rated for –30 °C to +65 °C operation under high humidity.
Q5: What diagnostic indicators are provided?
A5: LEDs indicate module health (OK), communication (TX/RX), and per-channel alarm status.
Q6: How much power does it consume?
A6: It typically consumes around 5.8 W during operation.
Q7: What are its dimensions and weight?
A7: Measures 241 × 24.4 × 99.1 mm and weighs approximately 0.4 kg.
Q8: Where is it installed within the rack system?
A8: Installed in full-height slots to the right of the transient data interface (TDI) module.
Q9: How long do the relay contacts last?
A9: They’re rated for approximately 100,000 operational cycles at rated load.
Q10: Can I add multiple modules for logic expansion?
A10: Absolutely—multiple 4‑channel modules can be added as needed for expanded logic.
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