ABB FEX300, Operating Instruction

Page: 133 / 176

Extended diagnostic functions
OI/FEX300/FEX500-EN FEX300, FEX500 133
8.2 Checking the grounding
This function allows you to check the electrical grounding of the device.
Important (Notice)
• While the check is in progress, no flow measurement can take place.
• The measuring tube must be full.
• No flow must occur in the flowmeter sensor.
• The device must not be provided with a preamplifier.
8.2.1 Performing the grounding check
Diagnostics / Diagnosis Control / Grounding Check
1)
Grounding Check Start the "Grounding Check" function.
Power Spectrum Display only Current power spectrum.
Amplitude 1 Value Display only
Amplitude 2 Value Display only
Amplitude 3 Value Display only
Amplitude 4 Value Display only
Display the four highest amplitudes in the power
spectrum.
italics = Parameter can only be viewed at the "Advanced" password level.
1) Parameter / menu only available for FEP500 / FEH500.
Grounding Check
Grounding Check
Power Spectrum
Amplitude 1
Back OK
3.

Use or to select "Grounding Check".
4.

Use to start the Grounding Check function.
Grounding Check
Grounding Check 46,75
48,65
50,08
52,00
Back OK
Once the grounding check has been started, the frequency
range up to 250 Hz is measured. The four most intensive
frequencies of the spectrum are shown at the right of the
display.
The corresponding amplitudes and the power spectrum
over the frequency range can be called up for display using
the following parameters.