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- FAQ > Drive Products > Inverters-FREQROL > Switching between high speed and low speed
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Switching between high speed and low speed
Is the following connection OK to switch between high speed and low speed?
Is it OK not to use the RH (multi-speed) signal at low speed (10 Hz)?
Terminal STF (STR) ON: 10 Hz operation
Terminal STF (STR) ON, RH (multi-speed) ON: 60 Hz operation
Is it OK not to use the RH (multi-speed) signal at low speed (10 Hz)?
Terminal STF (STR) ON: 10 Hz operation
Terminal STF (STR) ON, RH (multi-speed) ON: 60 Hz operation
- Category :
Answer
As you mention, when the inverter is operated only with STF without inputting the speed command signal, the minimum frequency must be set to 10 Hz.
However, as the inverter outputs voltage just by turning the forward signal ON, it is recommended to use the RL signal to set the low speed to ensure safety.
However, as the inverter outputs voltage just by turning the forward signal ON, it is recommended to use the RL signal to set the low speed to ensure safety.
- Product Name
- Inverter, magnet motor drive
- Series
- Others
