The Advanced Diagnostics application is a licensed feature available in CSI 9420 devices. Contact your Emerson Sales Representative or Product Support for additional details.
When this feature is enabled, you can view a compressed thumbnail spectrum from a HART host, such as DeltaV or AMS Device Manager. The primary application however, is for integration with AMS Machinery Manager.
This feature allows you to retrieve compressed thumbnail spectra, high-resolution spectra, and analytical waveforms from the CSI 9420 and archive them in the AMS Machinery Manager database. This energy band provides additional insight, over and above the trended scalar values. This information provides a better indication of whether or not there is a real problem and, if so, how severe the problem is. By using the energy band, you can determine whether or not the vibration energy is periodic and at what frequency it is occurring.
- Effective Fmax for the thumbnail spectrum — For the velocity thumbnail spectrum, AMS Machinery Manager uses 100% as the default Fmax.
- True Fmax for PeakVue
— This allows the monitoring of a slower machine with PeakVue. Choosing 1000 Hz
Fmax uses about 1.6 seconds of data to produce a 1000 Hz analytical spectrum.
Choosing 500 Hz Fmax uses about 3.2 seconds of data to produce a 500 Hz
analytical spectrum. The 1000 Hz Fmax is better for 1800–3600 RPM machines. The
500 Hz Fmax is better for slower machines.
Note: True Fmax for PeakVue can only be configured in AMS Machinery Manager (MHM Access Control must first be enabled).
- Averaging for the high-resolution velocity spectrum — Averaging the velocity spectrum reduces the effect of transients in the data. If you use averaging, the frequency resolution of the high-resolution spectrum is 1.25 Hz/bin (800 lines) or 3 Hz/bin (400 lines). If you do not use averaging, the frequency resolution is 0.625 Hz/bin. The Fmax for all high-resolution spectra is 1000 Hz. 400-line averaging is enabled by default.
Data acquisitions can be on-demand, alert-based, or time-based. You can configure data acquisition settings in the AMS Machinery Manager Data Import program.
An on-demand spectrum (usually a thumbnail) provides a quick look at the vibration energy in the frequency domain. If you need more frequency resolution, you can obtain a high-resolution spectrum or a waveform. You can store data in AMS Machinery Manager database if the point is mapped.
You can configure time-based data acquisitions once; it happens automatically thereafter. You can define the type of data to collect (compressed spectrum, high-resolution spectrum, or waveform) and how often to collect and store data in the AMS Machinery Manager database. AMS Machinery Manager automatically stores all time-based data retrieved for future viewing and analysis.
With Alert-based data acquisitions, overall vibration and PeakVue measurements are processed to determine the alert state of the equipment being monitored. Then you can select at what alert level to trigger retrieval of the spectrum or waveform associated with that sensor. Alert-based data acquisition typically results in a longer life for your Smart Power Module.
- It is not necessary to transmit both waveform and spectrum from the CSI 9420. The spectrum is about half as much data to transmit as a waveform. If you need the waveform, the spectrum does not have to be transmitted because the software calculates the spectrum from the stored waveform.
- When using a power module, use care when configuring time-based retrieval of energy band. Transmitting high-resolution spectrum or waveforms consumes more energy and reduces the life of the power module.
- Thumbnail spectrum — Once per day
- High-resolution spectrum — Once every two weeks
- Waveform — Once per month
On-demand data collection is not expected to have a significant impact on power module life. If you are using a power module, keep in mind that even on-demand acquisitions can have an adverse effect on the power module life if you request data, especially high-resolution data, too frequently.
For more information on these data acquisitions, refer to the Data Import topics in AMS Machinery Manager Help.