Dual-Module Keyphasor Solution for High-Availability Machinery Protection
The Bently Nevada 3500/25-02-01-01 Enhanced Keyphasor Module is a high-performance rotational reference solution designed for applications requiring additional Keyphasor input capacity within the Bently Nevada 3500 Machinery Protection System. This configuration includes two half-height, two-channel Enhanced Keyphasor modules, providing a total of four Keyphasor input channels for complex rotating machinery systems. The modules receive signals from proximity probes or magnetic pickup sensors and convert them into precise digital Keyphasor signals for shaft speed, phase reference, and synchronized vibration analysis.
The 02-01-01 configuration features non-isolated I/O modules with internal terminations and CSA/NRTL/C (Class I, Division 2) approval, making it suitable for hazardous industrial environments where dependable machinery protection and regulatory compliance are required. Its modular architecture, backward compatibility, and advanced signal processing capabilities make it an excellent choice for critical rotating equipment in power generation, oil & gas, and heavy industry.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 3500/25-02-01-01 |
| Product Type | Enhanced Keyphasor Module |
| Series | 3500 Machinery Protection System |
| Configuration | 02-01-01 |
| Module Quantity | Two Half-Height Modules |
| Total Input Channels | 4 Keyphasor Channels |
| I/O Module Type | Non-Isolated I/O with Internal Terminations |
| Supported Sensors | Proximity Probes and Magnetic Pickup Sensors |
| Primary Function | Shaft Speed, Phase Reference & Rotational Timing |
| Buffered Outputs | Front and Rear Buffered Outputs |
| Firmware | Field Upgradeable |
| Agency Approval | CSA/NRTL/C (Class I, Division 2) |
| Installation | Half-Height Slots in 3500 Rack |
| Main Module Dimensions | 119.9 × 24.4 × 256.5 mm (each module) |
| Main Module Weight | Approximately 0.34 kg (each module) |
| I/O Module Dimensions | 241.3 × 24.4 × 103.1 mm |
| I/O Module Weight | Approximately 0.46 kg |
Typical Applications
The 3500/25-02-01-01 is designed for rotating machinery that requires multiple synchronized Keyphasor signals for advanced monitoring and protection.
Typical applications include:
-
Steam turbine-generator sets
-
Gas turbine monitoring systems
-
Multi-shaft centrifugal compressors
-
Industrial generator protection
-
High-speed gearbox monitoring
-
Large electric motor diagnostics
-
Combined-cycle power plants
-
Oil and gas production facilities
-
Petrochemical processing units
-
Heavy industrial rotating equipment
Product Advantages
Designed for mission-critical applications, the 3500/25-02-01-01 delivers accurate rotational reference signals while supporting higher channel capacity for sophisticated machinery protection systems.
Key advantages include:
-
Four Keyphasor input channels using dual two-channel modules
-
High-precision shaft speed and phase reference measurements
-
Internal termination simplifies field wiring and maintenance
-
Supports proximity probes and magnetic pickup transducers
-
Advanced digital signal processing improves diagnostic accuracy
-
Field-upgradable firmware for future system enhancements
-
Full compatibility with existing 3500 Machinery Protection Systems
-
CSA/NRTL/C approval for hazardous industrial environments
-
Compact half-height module design maximizes rack utilization
-
Enhances predictive maintenance and machinery reliability
Technical FAQs
1. What is the primary purpose of the 3500/25-02-01-01 Enhanced Keyphasor Module?
It provides accurate digital Keyphasor signals for shaft speed, phase reference, and synchronized vibration measurements within the 3500 Machinery Protection System.
2. What does the "02" module option indicate?
The 02 option specifies two half-height, two-channel Enhanced Keyphasor modules, providing a total of four Keyphasor input channels.
3. What does the "01" I/O option represent?
It indicates a non-isolated I/O module with internal terminations, allowing field wiring to terminate directly on the rear I/O module inside the rack.
4. Which sensors are compatible with this module?
The module accepts signals from Bently Nevada proximity probes and compatible magnetic pickup sensors, depending on the application configuration.
5. What is the function of a Keyphasor signal?
A Keyphasor signal provides a precise once-per-revolution or multiple-event timing reference, enabling accurate speed measurement, phase analysis, and synchronous vibration monitoring.
6. Is this module compatible with existing 3500 systems?
Yes. The Enhanced Keyphasor Module is fully backward compatible with previous-generation 3500 Keyphasor modules, making upgrades straightforward.
7. Does the module support firmware upgrades?
Yes. The firmware is field upgradeable, allowing future enhancements without replacing the hardware.
8. What are the dimensions and weight?
Each Keyphasor module measures 119.9 × 24.4 × 256.5 mm and weighs approximately 0.34 kg. The associated internal termination I/O module measures 241.3 × 24.4 × 103.1 mm and weighs approximately 0.46 kg.
9. What does the agency approval option "01" signify?
The 01 approval option provides CSA/NRTL/C (Class I, Division 2) certification for use in approved hazardous industrial environments.
10. Why choose the Bently Nevada 3500/25-02-01-01 Enhanced Keyphasor Module?
Its dual-module architecture, four-channel capability, certified hazardous-location approval, precise rotational reference performance, and seamless integration with the 3500 platform make it an ideal solution for demanding machinery protection applications.
A DCS Q Co., Ltd. - PLC and DCS Industrial Control Equipment Wholesale
