BEA-Trip (Ballast resistor current detection error)

What does 112 mean?

This fault indicates that the optocoupler responsible for detecting current flow through the ballast resistor is signaling no current, even when expected (KPS-600). This suggests a fault in the ballast resistor, its associated circuitry, or the optocoupler itself, preventing proper regenerative energy dissipation.

1. 1

   Measure the resistance of the ballast resistor to ensure it is not open-circuited.

2. 2

   Verify that voltage is present across the ballast resistor terminals when regenerative braking is expected.

3. 3

   Inspect the optocoupler circuit board for power supply and signal integrity, if accessible.