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- Bently Nevada
- 3500/32 125712-01
- 4-Channel Relay Module
- USA
- 241 mm × 24.4 mm × 242 mm
- 0.7kg
- 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: 3500/32 125712‑01
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Type: Four-Channel Relay Module (DPDT outputs, half-height)
Product Description
The 3500/32 125712‑01 module is a four-channel relay output component designed for industrial machinery protection and automation. Each output channel is built using two SPDT relays arranged as a DPDT contact, offering flexible and reliable alarm and shutdown control. Engineers can program each relay with “Alarm Drive Logic” using AND/OR logic, tailored to equipment monitoring needs.
Constructed for rugged industrial environments, it features epoxy-sealed circuitry, electrical isolation, arc suppression, and diagnostic indicators to support safe and stable operations.
Applications
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Power plants—control alarms or shutdowns in turbines and generators
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Oil & gas—valve and compressor protection logic in harsh conditions
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Chemical and water treatment—automated pump or treatment unit shutdown
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Manufacturing—motor protection in assembly lines
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Any rotating or process-critical machinery requiring fast, reliable relay logic
Product Advantages
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Independent Channels: Each of the four relays can be individually configured for flexible alarm logic.
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Electrical Isolation: All interfaces are isolated for robust safety and noise immunity.
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Arc Suppression: Built-in suppression up to 250 Vrms protects contact longevity.
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Diagnostic Feedback: LEDs for OK, RX/TX, and per-channel alarm give immediate status insight.
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Rugged Build: Epoxy-sealed circuitry withstands humidity, dust, and vibration—ideal for industrial use.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 3500/32 125712‑01 |
| Relay Outputs | Four DPDT channels (SPDT relays paired) |
| Contact Life | 100,000 cycles at 5 A, 24 V DC or 120 V AC |
| Power Consumption | ~6 W typical |
| Arc Suppression | 250 Vrms built in |
| Logic Programming | Configurable AND/OR alarm drive per channel |
| Operating Temperature | –30 °C to +65 °C |
| Storage Temperature | –40 °C to +85 °C |
| Humidity | Up to 95%, non‑condensing |
| Dimensions | ~241 mm × 24.4 mm × 242 mm (full-height) |
| Weight | ~0.7 kg |
Related / Similar Models (Same Series)
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| 3500/32M 125720‑01 | Enhanced I/O version of the 4-channel relay module | ~241 × 24.4 × 99.1 | ~0.4 kg |
| 3500/33 | 16-channel relay module with expanded relay capacity | N/A | ~1.2 kg |
| 3500/34 TMR | TMR (triple modular redundancy) relay module | N/A | ~1.3 kg |
| 3500/25 149369‑01 | Enhanced Keyphasor module for phase synchronization | N/A | ~0.43 kg |
| 3500/42M | Vibration velocity/acceleration monitoring module | N/A | ~0.9 kg |
Popular Models from the Same Brand
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| 3500/15 | Low-voltage AC power input module | 140 × 80 × 50 | ~0.4 kg |
| 3500/25 | Keyphasor signal conditioner | 140 × 80 × 50 | ~0.5 kg |
| 3500/40M | Displacement/velocity monitor | 220 × 180 × 95 | ~1.2 kg |
| 3500/44M | Aeroderivative gas turbine vibration module | 260 × 258 × 240 | ~0.8 kg |
| 3500/53 | Overspeed detection module | 140 × 80 × 50 | ~0.5 kg |
Frequently Asked Questions (FAQ)
Q1: What is the function of the 3500/32 125712‑01?
A1: It provides four DPDT relay outputs for alarm or shutdown logic within machinery monitoring systems.
Q2: Can each relay be independently controlled?
A2: Yes, each of the four channels can be configured separately using AND/OR logic.
Q3: What is the relay contact rating?
A3: Each relay is rated at 5 A switching capacity at 24 V DC or 120 V AC.
Q4: What environmental conditions can it handle?
A4: Rated for operation from –30 °C to +65 °C, storage up to +85 °C, with up to 95% humidity (non-condensing).
Q5: Is there diag indication on the module?
A5: Yes—there are LEDs for module health (OK), data comms (TX/RX), and channel alarm status.
Q6: How does it protect from electrical interference?
A6: Electrical isolation and arc suppression (250 Vrms) reduce noise and prolong relay life.
Q7: How is it mounted?
A7: It’s a full-height module that plugs into the 3500 system rack to the right of the interface module.
Q8: What is the expected lifespan for the relay contacts?
A8: Approximately 100,000 operational cycles at maximum rated load.
Q9: Can this module be used in harsh industrial environments?
A9: Certainly—it’s epoxy-sealed and built for reliability in tough conditions.
Q10: What is the typical power draw?
A10: It consumes around 6 W during normal operation.
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