Sequence of event recorder with connected SCADA systems
A sequence of event recorder is an electronic device that is used in industrial plants to record important events or faults within the process. It records the chronological sequence of events such as alarms, status changes or faults. A sequence of event recorder usually works closely with a SCADA system (Supervisory Control and Data Acquisition). The SCADA system monitors and controls the entire system and receives the recordings from the sequence of event recorder. This connection makes it possible to monitor events in real time and react immediately to any problems that arise. In addition, the recorded data can be analyzed later in order to identify possible causes of errors or faults and initiate improvement measures. The combination of Sequence of Event recorders with SCADA systems therefore enables more efficient and reliable monitoring and control of industrial processes.
To analyze switching processes, switching times and sequences, it is important to record digital signals with high temporal resolution. A data logger must be significantly faster than typical PLC cycle times, especially when analyzing faults. For example, an event recorder must also be able to reliably resolve the bouncing of relays and contacts. The ProfiMessage and Expert devices are the ideal tool for this. The digital inputs record events with a resolution of a few µsec. All inputs are recorded in parallel so that the switching times can be precisely determined and calculated. Depending on the task, analog variables can also be recorded in parallel. Events with pre- and post-history can be recorded and saved via internal logic channels and trigger channels.
Application highlights of the Sequence of Event Recorder
- Parallel acquisition of digital and analog signals
- High time resolution down to the µ-second for events
- Triggered event storage with pre- and post-history
- Convenient analysis options with ProfiSignal logic analysis trend
- Autonomous operation also possible without a PC
Practical example of a Sequence of Event Recorder
Detection of faults and switching times for locomotives
A manufacturer of locomotives relies on ProfiMessage devices to record faults and switching times during travel. Digital signals are recorded at control units, relays and contactors. CAN data is also recorded, as several CAN buses are used on the locomotive. The position data is also recorded synchronously via a GPS sensor. This results in driving and load profiles that are very helpful for analyzing malfunctions and faults. The data is retrieved via service laptop, USB stick or, if required, directly via UMTS router. This makes it possible to analyze faults promptly with ProfiSignal.
Typical areas of application
of the Sequence of Event Recorder
- Fault analysis on systems, machines and devices
- Qualification and validation of systems
- Checking PLC programs and logic analysis
- Determining the switching times of temperature controllers
Hardware and software for your measurement and testing solution
Flexible, scalable and expandable solution for seamless data acquisition and monitoring
The Loggito device is a compact data logger system designed for the acquisition and recording of measurement data. It has a variety of analog and digital inputs to connect different sensors and signals. The device records the data with high accuracy and stores it on an internal memory or external storage media such as SD cards.
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Data acquisition and analysis
With ProfiSignal Go you can display online data from the Message and Expert hardware in diagram form. Numerous analysis functions, such as zoom, cursor, movable axes, flags, ASCII export and calculation channels, enable fast display of measured values and post-processing.
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Precisely record, autonomously store, automatically transmit and evaluate measured values.
The FPGA-based Expert Logger device is particularly powerful and enables the processing of up to 46 analogue input channels, both at low and high sampling rates. Measured values can be precisely recorded, autonomously stored and automatically transferred to the internet or PC via USB, LAN or WLAN and evaluated.
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Operating and monitoring
ProfiSignal Basic combines the functions of ProfiSignal Go with operating and monitoring elements of process visualisations, e.g. digital and analogue displays, switches, buttons and signal lamps. With Basic, you can create everything from simple visualisation diagrams to complex visualisation systems.
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Modular measuring, monitoring and automation in one device.
The ProfiMessage D device is a state-of-the-art data logger system that has been specially developed for industrial data acquisition and analysis. It offers a wide range of functions such as the recording and storage of measurement data, monitoring of process parameters and alarms in the event of deviations.
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Automate and control
ProfiSignal Klicks supplements ProfiSignal Basic with functions for process automation. Structural diagrams for mapping the process as well as a script language (completely operable with the mouse) enable even the non-informatician to create complex test stand and automation applications with automatic report generation.
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State-of-the-art processor technology and extreme precision for vibration measurement.
The Expert Vibro device is a powerful vibration analysis device that has been specially developed for monitoring and analyzing machine and system conditions. It enables vibration data to be recorded and evaluated in order to detect potential problems or signs of wear at an early stage.
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Fast project planning and analysis of measurement data
With ProfiSignal 20 Go you can visualise your measurement data in just a few steps, both online and offline, in various diagram types, monitor, analyse, archive as a measurement file or export directly in the appropriate file format.
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Intelligent data recorder for synchronous recording of transient and periodic events.
The Expert Transient device enables the recording and evaluation of transient signals over a certain period of time and provides important information for the optimization of processes and systems. The device is characterized by its high accuracy, fast sampling rate and simple operation.
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Visualisation and operation
With ProfiSignal 20 Basic you can create individual diagrams using a wide range of operating and monitoring elements. Both continuous processes (e.g. production data acquisition) and discontinuous measurement tasks (e.g. test measurements) can be visualised, operated and monitored without any programming effort. You can create the operating and monitoring diagrams by assembling and configuring the prefabricated elements.
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Modular system for use as a measuring, control and monitoring device.
The ProfiMessage devices are a modular, expandable and easy-to-use system for measurement data acquisition, monitoring and automation of machines, systems or test benches. ProfiMessage can be used wherever measured values need to be recorded quickly, precisely and electrically isolated, as well as intelligently pre-processed or monitored.
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Central measurement data management
The Delphin Data Center is the solution used for the worldwide measurement networking and control of plants, machines and test stands.
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PC-supported data acquisition and test stand
The Expert Key device is a measuring and control device that can be used in various applications. It enables the acquisition and evaluation of measurement data as well as the control of processes. The device has various interfaces and can be connected to a wide range of sensors and actuators. It is often used in automation technology, mechanical engineering and research.
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Compact and flexible measurement data laboratory with precision measurement technology.
The LoggitoLab device is ideal for use in laboratory environments, research projects, quality control and other applications where precise data acquisition and analysis is required. It offers a reliable and user-friendly solution for monitoring and recording measurement data.
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Test stand for measurements with potential using an internal data memory.
The LogMessage device is a powerful data logger system designed for the reliable acquisition and recording of measurement data. It offers a variety of analog and digital inputs to connect different sensors and signals. The device records the data with high accuracy and saves it to an internal memory or external storage media.
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