Overvoltage

What does 2 mean?

The R&M Materials Handling Frequency Converter has detected an overvoltage condition, which could be caused by an excessively high supply voltage or a fault in the braking resistor circuit. Issues such as a failure of the resistor itself or a break in its wiring can trigger this fault.

• Supply voltage exceeding the rated input range
• Failure of the braking resistor
• Break in the braking resistor wiring

Click steps to track your progress.

1. 1

   Measure the supply voltage and compare it to the specified hoist supply voltage on the hoist type plate

2. 2

   Measure the resistance of the braking resistor

3. 3

   Perform a visual inspection of the braking resistor and its wiring connections