84
Motor protection Stop with inhibit
SEW Eurodrive · MCBSM
What does 84 mean?
The motor's utilization is too high, causing a stop with inhibit. This indicates the motor is being overloaded, potentially leading to overheating, winding damage, or premature failure if the high load condition persists.
Common Causes
- Motor protection relay triggered a stop command while an inhibit signal was active.
- Overcurrent condition detected by motor protection.
- Thermal overload of motor windings.
- Short circuit in motor windings.
- Faulty motor protection relay preventing normal operation.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Check the P345/346 IN UL monitoring parameters for proper configuration.
- 2
Reduce the mechanical load on the motor to bring its utilization within limits.
- 3
Extend the acceleration and deceleration ramps to reduce peak current demands.
- 4
Implement longer pause times between operations to allow the motor to cool down.
Verified technical data. Last updated: March 2026
Related Faults
Source: SEW Eurodrive MCBSM