Rotational speed range chart with background

Who it’s for

Maintenance engineers, machine operators, and plant supervisors ask “can I see rotational speed history against operating zones?” The background variant adds a full-card color signal for wall-mounted control room displays.

What it does

A device reporting rotationalSpeed = 1200 RPM renders a time-series area chart overlaid on horizontal color bands on a card whose entire background fills with the current operating level color: blue for Low (below 500 RPM), green for Normal (500–1500 RPM), orange for Elevated (1500–3000 RPM), and red for High (above 3000 RPM).

• Full-card background color makes current rotational speed operating level readable across a room without reading the number
• Color-banded area chart shows speed trend against operating zone boundaries simultaneously
• Data zoom slider lets operators focus on any time window within the displayed period
• Shows one asset’s data per widget; add multiple widgets to monitor different motors or drives side by side

How to set up

Data keys

Key	Role	Type	Description
rotationalSpeed	Chart series	Timeseries	Rotational speed in RPM; change the key name to match your device’s telemetry key

The widget ships with a simulated function datasource key labeled Rotational speed, so it draws random values until you point the datasource at a device and rename the key.

To point it at your own device: open the dashboard in edit mode, open the widget’s Datasources, pick the entity or entity alias, and replace the function key with the key your device reports.

Value ranges

Range (RPM)	Level	Color
0–500	Low	Blue
500–1500	Normal	Green
1500–3000	Elevated	Orange
3000+	High	Red

How to customize

• To change the operating thresholds — open the widget settings and adjust the band boundaries to match your machine’s rated speed range.
• To change the background and band colors — edit the color for each operating band in the widget settings.
• To rename the units label — change the Units field in the widget settings if needed.

Tips

• On a control room wall display, the colored background announces current motor status from across the room while the banded chart tells the story of how speed has varied over the period.
• Use this card on a large monitor dedicated to a single drive system where both trend history and current status must be legible from a standing position.
• Use consistent operating colors across all rotational speed widgets.