|
Frequency Range |
0–10 Hz |
|
Accuracy |
±1% Full Scale |
|
Response Time |
< 2 ms |
|
Input Voltage Range |
0–27.3 VDC |
|
Voltage Output |
+24 VDC / 0 VDC |
|
|
|
|
|
Miya zheng |
▎Product Overview
The EPRO MMS6250 is a microprocessor-based shaft position and axial displacement monitoring module from the MMS6000 machinery protection system. It is specifically designed for continuous monitoring and protection of critical rotating equipment such as steam turbines, gas turbines, compressors, generators, and pumps. The module processes signals from eddy current sensors and provides accurate shaft position measurements, alarm functions, and trip protection to help prevent catastrophic machinery failures.
▎Technical Specifications
|
Model |
MMS6250 |
|
Product Type |
Shaft Position / Axial Displacement Monitor |
|
Series |
MMS6000 Machinery Monitoring System |
|
Measurement Channels |
3 Channels |
|
Monitoring Function |
Shaft Position & Axial Displacement |
|
Input Signal |
Eddy Current Sensor Signal |
|
Frequency Range |
0–10 Hz |
|
Accuracy |
±1% Full Scale |
|
Response Time |
< 2 ms |
|
Input Voltage Range |
0–27.3 VDC |
|
Voltage Output |
+24 VDC / 0 VDC |
|
Communication |
RS-232, RS-485, Optional PROFIBUS-DP |
|
Current Outputs |
Two per channel (one isolated) |
|
Operating Temperature |
-10°C to +60°C |
|
Storage Temperature |
-20°C to +85°C |
|
Humidity |
5–95% RH, Non-condensing |
|
Power Supply |
Redundant Power Supply Supported |
|
Country of Origin |
Germany |
▎Core Function & Application
The MMS6250 is typically configured as a Dual-Channel Eccentricity Monitor or a specialized displacement module.
Ø Primary Measurement: It measures the shaft eccentricity (peak-to-peak displacement at very low speeds). Monitoring eccentricity is absolutely critical during the barring/turning gear phase of a steam turbine to ensure the rotor is not thermally warped or bowed before bringing the machine up to full speed.
Ø Key Application: Turbine Supervisory Instrumentation (TSI) systems in power plants, large centrifugal compressors, and petrochemical turbo-machinery.
▎Key Technical Features
Ø Dual-Channel Independence: Features two completely independent measurement channels, allowing for redundancy or the monitoring of two separate bearings/points simultaneously.
Ø Microprocessor-Controlled: Internal digital processing converts analog signals from eddy current sensors into highly accurate displacement and eccentricity values.
Ø Field Configurable: Parameters such as measuring range, alarm limits, filter frequencies, and sensor characteristics can be fully customized using dedicated configuration software (e.g., MMS 6910).
Ø Built-in Protection Relays: Equipped with dedicated limit relays for Alert and Danger levels. These can be wired directly into the Emergency Shutdown System (ESD) or DCS for automated machine trip protection.
▎FAQ
Ø What is the primary purpose of the MMS6250?
The MMS6250 continuously monitors shaft position and axial displacement, helping protect critical rotating machinery from excessive thrust movement and mechanical damage.
Ø How many monitoring channels does the MMS6250 provide?
The module utilizes a three-channel measurement architecture, providing enhanced reliability and fault tolerance for critical applications.
Ø Can the MMS6250 communicate with plant control systems?
Yes. The module supports RS-232, RS-485, and optional PROFIBUS-DP communication for integration with PLC, DCS, and machinery management systems.
Ø Does the MMS6250 support predictive maintenance strategies?
Yes. Continuous monitoring, alarm functions, self-diagnostics, and accurate shaft position measurement help identify abnormalities before equipment failure occurs.
Ø What are the key advantages of the MMS6250 in turbine applications?
The MMS6250 offers high measurement accuracy, redundant power capability, configurable protection limits, and fast response time, making it ideal for turbine shaft position and thrust monitoring.
▎Recommended
|
PR6423/000-031 |
PR6426/000-121 CON031 |
|
PR6423/015-030 CON021 |
PR9350/12 |
|
PR6426/010-030 CON021 |
PR6423/100-141 CON041 |
|
PR6423/004-010 |
PR6423/103-141 CON041 |
|
PR6423/000-131-CN CON031 |
PR6423/105-141 CON041 |
|
PR6423/004-120-CN CON021 |
PR6424/104-141 CON041 |
|
PR6423/002-001-CN CON041 |
PR6423/106-OF1 PR6423/106-0F1 |
|
PR6423/010-100-CN CON021 |
PR6424/010-110 CON021 |
|
PR6426/000-040 CON021 |
PR6423/004-030 CON021 |
|
PR6423/011-131 CON031 |
PR6423/018-010 CON021 |
|
PR6426/010-000 CON021 |
PR6424/010-010-CN CON021 |
|
MMS6823 |
PR6423/011-000 |
|
PR6423/000-031 CON041 |
PR6423/010-140-CN CON021 |
|
PR6423/013-130 CON021 |
PR6424/000-101 CON031 |
|
PR6423/019-040 CON021 |
PR6423/01M-010 CON021 |
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Embrace the Future of Innovation Unlock the Power of Seamless Automation By integrating advanced automation solutions, real-time analytics, sophisticated control systems, and lifecycle services, improves operational performance while reducing risks, costs, and downtime. WeChat: hu18030235311 | WhatsApp: +86-18030235311 Mobile: +86-18030235311 | E-mail: sales3@amikon.cn
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