> For the complete documentation index, see [llms.txt](https://docs.creativeconners.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.creativeconners.com/docs/stagehand/stagehand-pro-ac/stagehand-pro-4-troubleshooting/stagehand-pro-4-monitoring-behavior.md).

# Stagehand Pro 4: Monitoring Behavior

## VFD Amperage

Press the **SET** button on the [VFD keypad](/docs/stagehand/stagehand-pro-ac/stagehand-pro-4-operation.md#front-panel-overview) to cycle through:

* speed in **Hz**
* current in **Amps**
* voltage in **Volts**

{% hint style="info" %}
Using the keypad to check the current draw of the motor is a great way to verify whether the attached machine is over capacity. If the machine has a maximum current draw of 17A, and the current displayed on the VFD is 20A, you know the machine is being asked to move more than it can and you should reduce the load.
{% endhint %}

{% hint style="info" %}
You can graph current and speed over time using Spikemark's [Analyze Movement](/docs/spikemark/drive-communication/analyzing-movements.md) feature.
{% endhint %}

## Load Cell Readout

![](/files/vHkqNHgcsFJvGDWNZxa2)

When [jogging](/docs/stagehand/stagehand-pro-ac/stagehand-pro-4-operation/stagehand-pro-4-manual-operation-jogging.md#manual-operation-jogging), the Stagehand displays the weight sensed by an attached load cell in the top line of the screen. The weight value is shown after the **W:** label. In the example above, it's 950.5 lb.

The [load cell data can be scaled](/docs/spikemark/load-cell.md) to your preferred unit of measure through Spikemark.

Load cell data from multiple Stagehands can be [viewed through Spikemark](/docs/spikemark/load-cell.md).


---

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