Products Description
| Company Information | |||
| [email protected] | |||
| Mobile | +8613950166376 | ||
| +8613950166376 | |||
| 13950166376 |
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Part Number | 3701/55 |
| Product Series | ADAPT |
| Product Type | Emergency Shutdown Device (ESD) |
| System Type | Safety PLC / Overspeed Protection System |
| Architecture | Triple Modular Redundant (TMR) |
| Primary Function | Emergency shutdown and overspeed protection |
| Speed Inputs | 6 |
| Discrete Inputs | 32 |
| Analog Inputs | 12 |
| Trip Relay Outputs | 12 independent outputs |
| Recorder Outputs | 2 internally powered 4–20 mA outputs |
| Logic Processing Time | Approx. 2 ms |
| Relay State Change | Approx. 8 ms |
| Network Interface | Ethernet, TCP/IP / Modbus TCP |
| Ethernet Ports | 6 |
| Ethernet Speed | 10/100 Mbps |
| Configuration Software | Bently Nevada Monitor Configuration (BNMC) |
| Safety Certification | SIL 3 |
| Applicable Standards | API 670, API 612, IEC 61508 |
| Operating Temperature | -30°C to +65°C |
| Storage Temperature | -45°C to +85°C |
| Relative Humidity | 0–95%, non-condensing |
| Mounting | Bulkhead mount |
| Approx. Dimensions | 293 × 254 mm (11.5 × 10 in.) |
| Approx. Weight | 5–8 kg* |
| Typical Applications | Steam turbines, gas turbines, hydro turbines, expanders and other rotating machinery |
| Product Status | Industrial machinery safety / protection system |
FAQ
FAQ
Q1: What is Bently Nevada 3701/55?
A: The 3701/55 is the ADAPT Emergency Shutdown Device (ESD), a safety PLC with integrated overspeed detection for protecting critical rotating machinery.
Q2: What is the main function of the 3701/55?
A: Its primary function is to detect dangerous operating conditions, particularly overspeed conditions, and execute the programmed shutdown logic to protect the machine.
Q3: What type of architecture does the 3701/55 use?
A: It uses a triple-modular-redundant (TMR) architecture with three CPU modules, providing high availability and fault tolerance for safety-critical applications.
Q4: How many inputs and outputs does the system support?
A: The system supports 6 speed inputs, 32 discrete inputs and 12 analog inputs, together with 12 independent trip relay outputs and two internally powered 4–20 mA recorder outputs.
Q5: How fast can the 3701/55 respond to a trip condition?
A: The nominal logic processing time is approximately 2 ms, while the relay state-change time is approximately 8 ms. This fast response is particularly important for overspeed protection.
Q6: What communication protocol does the 3701/55 use?
A: The system uses Ethernet with TCP/IP, and integration with plant controls, HMI or other automation systems can be performed through Modbus TCP. It provides six physical Ethernet interfaces.
Q7: What are the dimensions and weight of the 3701/55?
A: The published overall dimensions for the 3701/55 ESD are approximately 293 × 254 mm (11.5 × 10 in.). A practical shipping reference is approximately 5–8 kg, although the actual weight depends on the installed configuration.
Q8: Where is the 3701/55 commonly used?
A: It is designed for critical rotating equipment such as steam turbines, gas turbines, hydro turbines, expanders and other process machinery where independent overspeed protection and emergency shutdown are required.
Tags
Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
