Products Description
Bently Nevada 3701/55 323174-01 ADAPT ESD Emergency Shutdown CPU Module
Bently Nevada 3701/55 with part number 323174-01 is the CPU processing module for ADAPT ESD emergency shutdown system. It adopts triple redundant architecture, dedicated for overspeed protection and safety interlock of rotating machinery such as steam turbines, gas turbines and expanders.
This CPU supports multi-channel speed, analog and discrete signal acquisition, fast logic execution and relay trip output. It achieves SIL3 safety certification and complies with API 670 standard, with comprehensive self-diagnosis function. It is widely used for critical rotating equipment safety protection in power and petrochemical plants.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | Bently Nevada (Baker Hughes) |
| 2 | Model | 3701/55, Part No:323174-01 |
| 3 | Module Type | ADAPT ESD Triple Redundant CPU Module |
| 4 | Safety Level | SIL3, Compliant with API 670 |
| 5 | Response Time | 8ms state transition, 2ms logic execution |
| 6 | Signal Channels | 6 speed inputs, 32 DI,12 AI, relay trip outputs |
| 7 | Operating Temperature | 0℃ ~ +65℃ |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Triple redundant processing for overspeed detection and emergency shutdown logic |
| 2 | Collect speed, vibration and process analog/digital signals of rotating machinery |
| 3 | Fast trip relay output to cut off equipment when safety threshold exceeded |
| 4 | Built-in full self-diagnosis to detect module fault and wiring anomaly |
| 5 | Graphical logic configuration and communication with plant DCS system |
Application Scenarios
| No. | Application |
|---|---|
| 1 | Power plant steam turbine and gas turbine overspeed safety protection |
| 2 | Petrochemical industry expanders, compressors and large rotating machinery |
| 3 | Hydro turbine and critical rotating equipment emergency shutdown system |
| 4 | Industrial safety instrument system (SIS) for factory asset protection |
| 5 | On-site maintenance and spare replacement for existing ADAPT ESD rack |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q:What is Bently 3701/55 323174-01? A:It is the triple redundant CPU module for Bently Nevada ADAPT ESD emergency shutdown system. It monitors rotating machine speed and process signals, executes safety logic and triggers rapid trip action to protect high-value rotating equipment. |
| 2 | Q:What is the core advantage of triple redundancy? A:Three CPU boards run the same logic simultaneously. Voting mechanism ensures the system still works normally even if one CPU fails, meeting SIL3 high safety requirement for turbine protection. |
| 3 | Q:Is Bently 3701/55 323174-01 still in production? A:It belongs to Bently ADAPT ESD series safety module. Available stock includes new surplus and refurbished spare parts for replacement of turbine safety protection systems. |
