Product code: N/A
BENTLY NEVADA |125720-01 |4-Channel Relay I/O Module
¥6,666.00 Original price was: ¥6,666.00.¥2,210.00Current price is: ¥2,210.00.
- The Bently Nevada 125720-01 4-Channel Relay I/O Module is a dependable and high-performance interface component for machinery protection systems. Its isolated relay outputs, robust industrial design, and seamless system integration make it ideal for alarm and trip applications in critical rotating equipment. The recommended product list highlights additional Bently Nevada modules suitable for system expansion, maintenance, and comprehensive condition monitoring solutions.
Detailed content
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BENTLY NEVADA 125720-01 4-Channel Relay I/O Module
Product Introduction
The Bently Nevada 125720-01 4-Channel Relay I/O Module is a high-reliability interface module designed for machinery protection and condition monitoring systems. It provides isolated relay-based input and output functionality, enabling safe and dependable control of alarms, trips, and auxiliary devices in critical rotating machinery applications. The module is engineered to operate continuously in harsh industrial environments while maintaining stable and deterministic performance.
This relay I/O module integrates seamlessly into Bently Nevada monitoring architectures, supporting precise event handling and dependable signal switching for protection and control functions.

Product Parameters
- Model: 125720-01
- Product Type: Relay I/O Module
- Number of Channels: 4 relay channels
- Manufacturer Brand: Bently Nevada
- Function: Alarm, trip, and auxiliary relay control
- System Compatibility: Bently Nevada machinery protection systems
- Installation Method: Rack-mounted / backplane-installed module
- Operating Mode: Continuous real-time operation
Product Specifications
- Relay Outputs: 4 independent electromechanical relay channels
- Contact Type: Normally Open (NO) and Normally Closed (NC) configurable
- Electrical Isolation: Channel-to-channel and system isolation for noise immunity
- Switching Capability: Suitable for control and signaling circuits
- Response Time: Fast relay actuation for protection events
- Diagnostics: Module status indication and relay state monitoring
- Environmental Rating: Industrial-grade temperature and vibration tolerance
- Mechanical Design: Rugged enclosure for long-term reliability
Application Areas
- Rotating machinery protection systems
- Turbines, compressors, and generators
- Power generation and energy facilities
- Oil and gas processing plants
- Industrial condition monitoring installations
- Alarm and shutdown control circuits
Product Usage Instructions
- System Shutdown: Power down the monitoring rack before installing or removing the module.
- Installation: Insert the 125720-01 module into the designated slot, ensuring firm engagement with the backplane connector.
- Wiring: Connect external alarm, trip, or control circuits to the relay terminals according to system wiring diagrams.
- Configuration: Assign relay logic and alarm functions through the system configuration interface.
- Power-Up: Restore system power and verify proper module recognition and status indicators.
- Testing: Perform functional tests to confirm correct relay operation during alarm and trip conditions.
Regular functional testing of relay outputs is recommended to ensure ongoing protection integrity.
Technical Description
The Bently Nevada 125720-01 4-Channel Relay I/O Module serves as a critical interface between the monitoring system and external control or protection devices. Each relay channel is electrically isolated to prevent cross-interference and to protect sensitive monitoring electronics. The module processes alarm and trip commands generated by the monitoring system and converts them into reliable relay contact outputs.
Designed for high availability, the module supports continuous monitoring and rapid response to abnormal machinery conditions. Its robust construction and integrated diagnostics contribute to reduced downtime and improved system safety.
Recommended BENTLY NEVADA Product Models
The following table lists 20 randomly selected Bently Nevada product models commonly used for machinery protection, monitoring, and system expansion:
| No. | Product Model | Product Type | Primary Function |
|---|---|---|---|
| 1 | 3500/40M | Proximitor Monitor | Vibration and position monitoring |
| 2 | 3500/42M | Vibration Monitor | Machinery protection |
| 3 | 3500/44M | Aeroderivative Monitor | Turbine protection |
| 4 | 3500/50M | Tachometer Module | Speed and phase measurement |
| 5 | 3500/53 | Overspeed Module | Turbine overspeed protection |
| 6 | 3500/60 | Temperature Monitor | Thermal condition monitoring |
| 7 | 3500/61 | Process Variable Monitor | Analog process inputs |
| 8 | 3500/62 | Process Variable Monitor | Multi-channel process monitoring |
| 9 | 3500/63 | Communication Gateway | System data integration |
| 10 | 3500/65 | Relay Module | Alarm and trip relay outputs |
| 11 | 3500/70M | Reciprocating Compressor Monitor | Machinery diagnostics |
| 12 | 3500/72M | Reciprocating Compressor Monitor | Advanced protection |
| 13 | 3500/90 | Communication Module | Network connectivity |
| 14 | 3300/16 | Relay Module | Legacy system relay interface |
| 15 | 3300/35 | Rack Interface Module | System backplane interface |
| 16 | 3300/40 | Vibration Monitor | Legacy vibration protection |
| 17 | 3300/50 | Tachometer Module | Speed measurement |
| 18 | 3300/55 | Temperature Monitor | Thermal protection |
| 19 | 3300/70 | Alarm Module | Protection logic |
| 20 | 3300/90 | Communication Processor | System integration |
Summary
The Bently Nevada 125720-01 4-Channel Relay I/O Module is a dependable and high-performance interface component for machinery protection systems. Its isolated relay outputs, robust industrial design, and seamless system integration make it ideal for alarm and trip applications in critical rotating equipment. The recommended product list highlights additional Bently Nevada modules suitable for system expansion, maintenance, and comprehensive condition monitoring solutions.















