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What is the setup and operation of preset speeds for the Altivar 31?

It is possible to have up to 16 preset speeds. The preset speeds are selected using logic inputs.
In the FUn (application function) menu, go to sub-menu PSS (preset speeds).
Select the inputs to be used as preset speed inputs.
Then set the speeds (SP2 - SP16) to the desired speeds in Hertz.
The speeds are selected by the status of the inputs.
For example, the factory settings are as follows:
PS2 (2 preset speed inputs) is set to LI3 (logic input 3)
PS4 (4 preset speed inputs) is set to LI4 (logic input 4)
The speeds SP2, SP3 & SP4 are set to 10, 15 & 20 Hz respectively.
There are 4 possible combinations in this configuration with the drive running.
1 - If both LI3 & LI4 are low (has no 24 VDC), the drive will run at low speed + the analog speed reference.
2 - If only LI3 is high, the drive will run at 10 Hz.
3 - If only LI4 is high, the drive will run at 15 Hz.
4 - If both LI3 & LI4 are high, the drive will run at 20 Hz.
See the programming guide for additional details.

Reviewed 7/2011


CTA-ID : 2018585
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