BRAUN E1667.211 Speed Safety Monitoring Module
E1667.211 is the speed safety monitoring module of BRAUN in Germany. E1667.211 is compatible with BRAUN A500 series overspeed protection rack system, mainly receiving speed sensor pulse signals, completing speed acquisition, logic judgment, and safety trip output, meeting IEC61508 SIL3 functional safety standards. It is widely used in the safety instrument system SIS of key rotating equipment such as gas turbines, steam turbines, compressors, and generator sets to achieve equipment overspeed protection and avoid mechanical overspeed damage risks. E1667.211 adopts DIN rail rack mounted card installation, providing high reliability safety monitoring capabilities for the petrochemical and power generation industries.
BRAUN E1667.211 Speed Safety Monitoring Module
Product function
- Speed acquisition and monitoring: Receive pulse signals from speed probes, measure the speed of rotating machinery in real time, and determine overspeed and underspeed conditions.
- Safety overspeed protection trip: When the speed exceeds the set threshold, a fault safety relay outputs a trip signal, triggering an emergency shutdown of the unit to prevent equipment damage caused by overspeed.
- Sensor fault diagnosis: Real time monitoring of broken wires, short circuits, and abnormal signals in the speed probe, and outputting alarm signals in case of faults.
- External tripping signal processing: Receive external interlocking signals and participate in unit safety logic.
- Data and status output: The local panel displays RPM values, and PROFIBUS bus can be selected to upload status, alarm, and speed data to the DCS control system.
Parameter Specifications
| Item | Specification |
|---|---|
| Model | E1667.211 |
| Brand | BRAUN |
| Safety Standard | IEC 61508 SIL3, PL e / Cat.3 EN ISO 13849‑1 |
| Architecture | 2oo3 TMR Triple Modular Redundancy |
| Measuring Function | Speed monitoring, overspeed / underspeed protection, sensor fault detection |
| Output | Fail‑safe safety relay trip output, alarm output |
| Communication | Optional PROFIBUS‑DP interface |
| Mounting | Standard DIN‑rack card module |
| Operating Temperature | ‑20 °C ~ +70 °C |
| Weight | Approx. 0.65 kg |
| Origin | Germany |
| Application System | BRAUN A500 overspeed protection system |
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Product features
- Meet SIL3 IEC61508 and PL e safety levels, designed specifically for the safety protection of high-risk rotating machinery equipment, fault safety design, and tend to output on the safe side in case of failure.
- Support 2oo3 triple redundant TMR working architecture, which can achieve multi-channel speed signal voting and significantly reduce the risk of false tripping and rejection.
- The panel comes with buttons and digital display, allowing real-time speed and fault codes to be viewed on site, and threshold and parameter local settings can be directly completed without the need for an upper computer.
- Built in safety relay output, hard wired trip circuit, can complete protection actions without relying on communication.
- Improve self diagnostic function, covering sensor faults, channel faults, module internal hardware faults, and output alarms when faults occur.
- Rack plug-in card structure, standard DIN rack installation, supports hot swappable module replacement, easy maintenance.
- Wide temperature industrial hardware, suitable for harsh working conditions in power plants and petrochemical sites, supports optional PROFIBUS-DP communication interface to upload operation and alarm data.
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