What is the scale of the Altivar Process Drive Analog output AQ1 when assigned as motor Frequency?

When the AQ1 analog output is assigned to Motor Frequency, its default scaling is based on the drive's Maximum Frequency (tFr) setting.

Default Scaling:

• 0 Hz motor frequency = minimum analog output
• tFr (Maximum Frequency) = maximum analog output
• The output is scaled linearly between these two points

For example, if AQ1 is configured as a 4–20 mA output and:

• tFr = 60 Hz
• HSP (High Speed Setting) = 50 Hz

Then:

• 0 Hz = 4 mA
• 60 Hz = 20 mA
• Any frequency between 0 Hz and 60 Hz is represented proportionally between 4 mA and 20 mA.

Note: The scaling reference is tFr (Maximum Frequency), not necessarily the HSP (High Speed Setting). These values may be the same or different depending on the application.

Customizing the AQ1 Scale

The default analog output scaling can be adjusted using the following parameters:

• ASL1 – Analog Output Low Scale
• ASH1 – Analog Output High Scale

These parameters allow you to customize the relationship between motor frequency and the AQ1 analog output signal to meet specific application requirements.

For detailed configuration instructions, refer to the applicable Altivar Process Drive Programming Manual.

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