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Vibration Monitoring Tab: Trends & Alarms

The Monitoring tab answers whether a machine is getting worse, and since when. The Overview tab grades the latest sample; this tab follows each machine over time against its own median and against the alarm rules of the model, and lists every alarm the rules have raised.

Open it when an alarm arrives in ThingsBoard, to see which series broke which rule and how long it has been open, or to check that the schedule, the telemetry, and the alarms are running for the whole fleet.

Monitoring tab with the alarm state card, the series tiles, the trend chart, the monitoring and alarms cards, and the items table

Layout

Section titled “Layout”

Pick a machine in the items table, and every card above it switches to that machine.

Monitoring tab of the Conveyor drives vibration model with six numbered areas: alarm state, series tiles, trend chart, Monitoring card, Alarms card, and items table
# Area Contents
1 Alarm state The worst alarm open on the selected machine
2 Series tiles The latest value of each metric or band, against the machine’s median
3 Trend chart The selected series over time, with its median
4 Monitoring card The state of continuous monitoring for the model
5 Alarms card The alarm episodes of the selected machine
6 Items table Every machine with its ISO zone and alarms

Components

Section titled “Components”

Alarm state

Section titled “Alarm state”

The card at the top left names the selected machine and its alarm state:

  • With an alarm: the worst alarm open on the machine, its severity, and how many of the model’s rules are firing.
  • Without an alarm: No alarms raised and CLEAR. The rules are checked, and nothing breaks them.
Alarm state card of Conveyor 4E reading Velocity RMS over limit, Critical, four of four alarms were triggered Alarm state card of Mixer Drive 5A reading No alarms raised, CLEAR, zero of one alarms were triggered, and the alarms card reading Everything OK

A model with no alarm rules has no alarm state to report. The card (1) and the Alarms card (2) offer + Add alarm rule instead, which opens the rule editor.

Monitoring tab of the Mixers vibration model with no alarm rules: the alarm state card and the Alarms card each read that an alarm rule is required and offer Add alarm rule

Series tiles

Section titled “Series tiles”

The tiles list the latest value of each series, its alarm rule, and how far it sits above the machine’s own median. A tile whose rule is firing takes the severity color.

The tiles and the chart show one of two groups. Metrics shows RMS, acceleration RMS, peak-to-peak, and crest factor. Bands shows the five frequency bands around the shaft speed. Use the switch at the top of the tiles to switch between them.

Series tile block highlighted: the Metrics and Bands switch with Metrics selected and the four metric tiles Bands highlighted in the Metrics and Bands switch, with the five band tiles and one trend panel per band

With no tile selected, the chart shows every series of the category, one panel each. Click a tile to chart that series alone, and click it again to go back to all of them.

All metrics charted in stacked panels, with the RMS tile highlighted RMS tile selected and the chart showing only velocity RMS with its median No tile selected and all metrics charted again in stacked panels

Manage alarm rules under the tiles opens the rule editor. The number beside it is how many rules the model has. Writing rules is described in Monitoring & Alarms.

Manage alarm rules button highlighted under the series tiles, with the rule count 4

Trend chart

Section titled “Trend chart”

The chart draws the selected series on every sample in the time range, with the machine’s median dashed.

Trend chart of the Monitoring tab highlighted, showing velocity RMS of Conveyor 4E over time with its median dashed

Use the date picker to change the time range, or Group by to plot one point per minute, hour, day, week, month, quarter, or year instead of every sample. Each point shows the highest value in its period.

Date picker of the trend chart open, with quick ranges and a two-month calendar Group by picker open with no grouping, minute, hour, day, week, month, quarter, and year

Hover the chart to read a sample. With one series selected, the readout shows its value and its factor against the median; with all series charted, it shows every series at that moment.

Hover readout on the velocity RMS chart showing one sample, its value, and its factor against the median Hover readout across the stacked panels showing RMS, acceleration RMS, peak-to-peak, and crest factor at one sample with their factors against the median

Click a point to open that sample in the Analyzer tab. With grouping on, the point opens the sample with the highest value in its bucket. Drag the slider under the chart to zoom in on part of the window.

Monitoring card

Section titled “Monitoring card”

The card on the right shows the state of continuous monitoring for the model. How continuous monitoring works is described in Monitoring & Alarms.

Monitoring card of the Conveyor drives model with scheduled scanning every 6 hours, 3 metrics saved as telemetry, 4 rules raising alarms, and the Configure button

Alarms card

Section titled “Alarms card”

The alarm episodes of the selected machine: the Rule that fired, its Severity, and when it Opened. Sort by any column, and page through with the arrows at the bottom. With nothing open, the card reads Everything OK.

Alarms card of Conveyor 4E listing four open alarms: ISO zone, Bearing defect on outer race, and Velocity RMS over limit at Critical, and Acceleration RMS above median at Major

Click an alarm to see it on the chart. The chart shades the time the alarm has been open, in its severity color, and switches to what the rule watches:

Rule The chart shows
Reading over a limit on a metric or a band That metric or band, with a line for each severity level it crossed
Reading over a limit on Any metric or Any band Every series of the category, each with its own levels
ISO zone Velocity RMS, the reading the ISO zones are graded on, with the zone borders

Shaft fault and bearing defect alarms are not drawn on the chart; open the sample in the Analyzer tab to see the fault frequencies. Click the alarm again to clear the chart.

Velocity RMS over limit alarm highlighted in the alarms card, and the chart showing velocity RMS with Warning, Major, and Critical lines at 7, 12, and 18 mm/s and the open alarm shaded Acceleration RMS above median alarm highlighted in the alarms card, and the chart showing acceleration RMS with Warning and Major lines at 3 and 6 times its median ISO zone alarm highlighted in the alarms card, and the chart showing velocity RMS with the B/C and C/D zone borders

Items table

Section titled “Items table”

Every machine of the model. Click a row to switch the cards above to that machine.

Monitoring tab with the items table highlighted: five conveyors with their ISO zone, open alarms, severity, alarm rule, coverage, last scan, and scan status
Column Description
Item The machine
ISO zone The zone of its latest sample
Alarms How many episodes are open on it
Severity The worst of them
Alarm rule The rule behind that severity, with a count of the others
Coverage Samples stored for this machine, and the span they cover
Last scan When a scan last covered it
Scan status Where it stands in the current or last scan

The … menu at the end of a row works on that one machine:

  • Scan latest data and Scan more data scan only this machine. How both scans work is described in Actions.
  • Delete removes the machine from the model, with its samples, spectra, and alarms. You can add it back on the Properties tab.
Row menu of Conveyor 4E open in the items table with Scan latest data, Scan more data, and Delete

Explore other tabs

Section titled “Explore other tabs”
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