Video: How do I configure Plus/Minus speed control on an Altivar Process drive?
Resolution:
This guide explains how to configure Plus/Minus (Increase/Decrease) speed control using digital inputs on Altivar Process drives.
Configuration Steps:
- Go to [Complete Settings] → [Command and Reference]
- Set [Freq Switch Assign] (rFC) to [Ref Freq Channel 2] (FR2)
- Set [Ref Freq Channel 2] (FR2) to [Ref Frequency via DI] (UPdt)
- Navigate to [Complete Settings] → [Generic Functions] → [+/- Speed]
- Assign a digital input to [+ Speed Assign] (USP)
- Assign a digital input to [- Speed Assign] (dSP)
- Assign a digital input to [Ref Frequency Save] (Str)
How It Works:
- The + Speed input increases frequency while active.
- The – Speed input decreases frequency while active.
- The ACC (Acceleration) and DEC (Deceleration) settings determine how quickly the speed changes.
Example:
If ACC = 6 seconds on a 60 Hz drive, the speed increases at 10 Hz per second (60 Hz ÷ 6 s).
- Increase ACC → slower speed change
- Decrease ACC → faster speed change
- The same principle applies to DEC for decreasing speed
Check the next video for an step by step walkthrough or reference the attached document for more information
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