Fault code12
Brake chopper supervision error happens if there is no brake resistor, a broken resistor, or defective brake chopper. The manual's first action is: “Do a check of the brake resistor and the cabling. If they are in good condition, there is a fault in the resistor or the chopper. Ask instructions from the distributor near to you.”
- Model
- Vacon NXS/P
- Display shows
- Brake chopper supervision (12)
- Type
- Fault code
- Source
- Manual p. 152
What 12 means
Brake chopper supervision p. 152
Common causes
- There is no brake resistor. The brake resistor is broken. A defective brake chopper. p. 152
What to do
- Do a check of the brake resistor and the cabling. If they are in good condition, there is a fault in the resistor or the chopper. Ask instructions from the distributor near to you. p. 152
Before you service the product, read the safety instructions in the manual p. 13.
If 12 is still not resolved
- Contact service or dealer for assistance. p. 13 “WARNING! Before you do electrical work, make sure that there is no voltage in the components of the drive.”
- Contact service or dealer for assistance. p. 14 “CAUTION! Do not touch the components on the circuit boards. Static voltage can cause damage to these components.”
This page summarises what the manufacturer’s manual says about 12; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Vacon. Found a mistake? Report an error.