axismd.ai
KUKA Robot Controller
Overheat/Thermal · Basic
KUKA Robot KRC0232 - Ackn. over temperature feedback resistor
The feedback resistor in the axis encoder feedback circuit has exceeded its maximum safe operating temperature, triggering a thermal protection alarm. This typically indicates excessive current flow through the resistor or prolonged high-load conditions that generate heat beyond the component's thermal rating. The alarm requires acknowledgment and investigation of the underlying cause before normal operation can resume.
KRC0232
KUKA Robot KRC0232 - Ackn. over temperature feedback resistor
Ackn. over temperature feedback resistor
The feedback resistor in the axis encoder feedback circuit has exceeded its maximum safe operating temperature, triggering a thermal protection alarm. This typically indicates excessive current flow through the resistor or prolonged high-load conditions that generate heat beyond the component's thermal rating. The alarm requires acknowledgment and investigation of the underlying cause before normal operation can resume.
Common Causes
- Excessive motor current or sustained high-load axis movements causing resistor overheating
- Damaged or degraded feedback resistor with increased resistance value leading to higher power dissipation
- Poor thermal contact or blocked cooling path around the feedback resistor assembly
- Encoder cable shielding failure or short circuit causing abnormal current draw through the feedback circuit
- Defective encoder or feedback amplifier board generating excessive current through the resistor
Troubleshooting Steps
- 1Allow the controller and robot arm to cool to ambient temperature before attempting any diagnostics
- 2Visually inspect the encoder feedback resistor assembly for discoloration, charring, or physical damage indicating thermal stress
- 3Check encoder cable integrity and shielding for signs of wear, cuts, or moisture contamination using multimeter continuity tests
- 4Verify axis motor current draw during slow manual movements is within specification using the controller diagnostics menu
- 5Measure the feedback resistor resistance with a multimeter and compare against the documented specification; replace if significantly degraded
- 6If resistor and cabling are intact, perform a full axis calibration or replace the encoder feedback board assembly and re-commission the axis
Seeing Multiple Alarms?
Seeing another alarm with this one? Enter the code.
Get machine-aware diagnosis
AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.
Start freeWas this guide helpful?
Always verify with your machine manual or a certified technician before performing service procedures.