How do you set up ramp switching on an ATV340 drive?
Resolution:
Ramp switching allows the drive to alternate between two sets of acceleration and deceleration times based on:
- A digital input or communication signal, or
- A frequency threshold
- Set the primary ramps
Under Simply Start:- ACC → Acceleration time (Ramp 1)
- DEC → Deceleration time (Ramp 1)
- Configure ramp switching
Go to: Complete Settings → Generic Functions → Ramp Switching- RPS (Ramp Switching Assignment): Assign a logic input (LI1–LI6) or communication control to activate Ramp 2
- Set the secondary ramps
- AC2 → Acceleration time (Ramp 2)
- DE2 → Deceleration time (Ramp 2)
- When the RPS input is active, the drive uses AC2 / DE2. When inactive, it returns to ACC / DEC
- (Optional) Use frequency-based switching
- FRT (Ramp Threshold Frequency)
- If set > 0 Hz:
- Below FRT → ACC / DEC (Ramp 1)
- Above FRT → AC2 / DE2 (Ramp 2)
- If set > 0 Hz:
- FRT (Ramp Threshold Frequency)
If RPS (logic input) is active, it overrides the FRT setting. The drive will use Ramp 2, regardless of motor speed.
Use:
- RPS for external control (e.g., process signals)
- FRT for automatic switching based on speed
Test the configuration to ensure smooth transitions between ramps.
If this article does not answer your question, check out our FAQ database that has answers to more commonly asked questions:
Frequently Asked Questions - Schneider Electric (se.com)
If this FAQ did not solve your issue, you can call us at 1-888-778-2733 Option 2 and then 4 or e-mail us atdrive.products.support@se.comto create a case with our Technical Support Team.
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