Fieldbus Made Easy – Features of FDH-1

During commissioning or a scheduled outage, the FDH-1 is the first of its kind to check the resistance of fieldbus communication against electromagnetic interference. With the Fieldbus Diagnostic Handheld, you determine the failure margin of installed field devices individually, or all at once, on a working segment in just a few steps. During this test, the FDH-1 adds distortions to the communication signals and determines the maximum values for reliable communication. The accompanying report is created automatically. A good failure margin is the hallmark of reliable communication.

After a long fieldbus system service life, it is essential to validate short-circuit protection operations of the device coupler. With the Fieldbus Diagnostic Handheld FDH-1, you can easily initiate a test that increases the load current and determines whether the device coupler goes into a short-circuit condition. The peak current value is identified and can be compared with the manufacturer’s specification.

A plant upgrade is planned using modern fieldbus technology. This leads to the question: are the existing cables suitable for use with fieldbus? With the Fieldbus Diagnostic Handheld FDH-1, you can conveniently answer this question before devices are connected. The handheld checks cable continuity, signal level, and signal quality.

The built-in oscilloscope of the Fieldbus Diagnostic Handheld FDH-1 is a powerful tool to analyze the data signal for a specific telegram type or a communication error. Different operating functions permit you to select various trigger signals to easily detect these events. The signal trace is shown on the display.