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- Bently Nevada
- 3500/32M 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: 4‑Channel Relay I/O Module (Full‑Height)
Product Description
The 3500/32M 125720‑01 is a precision-engineered relay output module designed for the 3500 Series rack-based protection systems. Housing four independent SPDT relays, it allows configurable “Alarm Drive Logic” using AND/OR voting logic through rack configuration software. Its epoxy-sealed design with built-in arc suppression ensures robust performance in demanding industrial environments. LED indicators offer real-time insights into status, communication, and alarms.
Applications
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Direct alarm or shutdown logic for turbines, compressors, and generators
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Automation of valve control and shutdown in oil & gas facilities
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Interlocks and alarm outputs in manufacturing and pump stations
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Reliable protection for rotating machinery in chemical, power, and water treatment plants
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Critical machinery fault response in harsh industrial settings
Product Advantages
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Configurable Outputs: Each of the four relays can be programmed independently with AND/OR voting logic
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Built-In Arc Suppression: Rated up to 250 Vrms for enhanced contact protection
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Diagnostic Clarity: LED indicators for module status (OK), communication (TX/RX), and channel alarms
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Robust Design: Epoxy-sealed and built for high humidity and temperature ranges from –30 °C to +65 °C
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Modularity: Easily extendable protection logic by adding more modules to the rack
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 3500/32M 125720‑01 |
| Relay Outputs | 4 SPDT, configurable (AND/OR logic) |
| Contact Rating | 5 A @ 24 V DC or 120 V AC, 100,000 cycles |
| Arc Suppression | Built-in, 250 Vrms |
| LED Indicators | OK, TX/RX, per-channel alarm |
| Power Consumption | ~5.8 W typical |
| Operating Temp | –30 °C to +65 °C |
| Storage Temp | –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 | Weight |
|---|---|---|---|
| 3500/32 125712‑01 | Earlier four-channel relay output module | 241 × 24.4 × 99.1 mm | ~0.7 kg |
| 3500/33 | 16-channel relay output module | Full-size (larger) | ~1.2 kg |
| 3500/34 TMR | Triple modular redundancy relay module | Larger | ~1.3 kg |
| 3500/25M 149369‑01 | Enhanced Keyphasor phase reference module | Compact | ~0.43 kg |
| 3500/42M | Multi-channel vibration monitor | Full-size | ~0.9 kg |
Popular Models from the Same Brand
| Model | Description | Dimensions | Weight |
|---|---|---|---|
| 3500/15 | Low-voltage AC power input module | 140 × 80 × 50 mm | ~0.4 kg |
| 3500/25 | Keyphasor phase reference module | 140 × 80 × 50 mm | ~0.5 kg |
| 3500/40M | Displacement/velocity monitor | 220 × 180 × 95 mm | ~1.2 kg |
| 3500/44M | GT vibration monitor module | 260 × 258 × 240 mm | ~0.8 kg |
| 3500/53 | Overspeed detection module | 140 × 80 × 50 mm | ~0.5 kg |
Frequently Asked Questions (FAQ)
Q1: What exactly does the 3500/32M 125720‑01 do?
A1: It acts as a 4-channel relay output module with configurable logic for alarms and trip functions.
Q2: Are the relay outputs independent?
A2: Yes—each channel can be programmed separately using AND/OR logic.
Q3: What is the wiring load rating?
A3: Each relay handles 5 A at either 24 V DC or 120 V AC.
Q4: Does it have built-in protection against contact arcing?
A4: Yes, it includes built‑in arc suppression rated up to 250 Vrms.
Q5: What diagnostic visuals are available?
A5: LEDs show OK status, TX/RX activity, and individual channel alarms.
Q6: What are the physical dimensions and weight?
A6: It measures roughly 241 × 24.4 × 99.1 mm and weighs about 0.4 kg.
Q7: In what temperatures does it operate safely?
A7: It runs from –30 °C to +65 °C and can be stored from –40 °C to +85 °C.
Q8: Where is it installed in the rack?
A8: It fits into any full-height slot to the right of the transient data interface in the 3500 rack.
Q9: Can multiple relay modules be used in one rack?
A9: Absolutely—multiple units can be installed to expand output logic as needed.
Q10: What’s its typical power consumption?
A10: It consumes around 5.8 W during normal operation.
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