Speed difference

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A significant speed difference has been detected between expected and actual motor speed, or between different speed feedback channels, by the R&M Materials Handling Frequency Converter. This can be caused by mechanical failures, issues with load measurement, or problems with encoder signals (ENC1A, ENC2A-B) including incorrect wiring.

• Speed difference detected
• Load measured too low when using ESR (Energy Saving Regulation)
• Mechanical failure, e.g., in the gear system
• Interference or missing signal in ENC1A
• Sensor channels ENC2A-B connected incorrectly
• Interference or missing signal in ENC2A-B

Klikk på steg for å spore fremgangen.

1. 1

   Check the supply voltage

2. 2

   Verify the load measurement operation and calibration

3. 3

   Check hoist operation without any load applied

4. 4

   Check the sensor cable grounding and inverter PE- connections

5. 5

   Check or replace the speed sensor connected to ENC1A

6. 6

   Swap the connections between ENC2A and ENC2B