Oil aging / ready signal Display error
SEW Eurodrive · MCBSM
What does 105 mean?
The oil aging sensor is not ready for operation, meaning it's unable to provide valid status information regarding oil condition. This could be due to a power supply issue or a malfunction within the sensor itself, leaving the system unprotected from oil-related issues.
Common Causes
- Loss of power supply to the oil aging sensor (e.g., broken wire to 24VDC terminal or blown fuse).
- Internal malfunction or failure of the oil aging sensor unit itself, preventing initialization.
- Incorrect wiring or loose connections between the sensor and the drive/control system (e.g., communication wires to terminal X12).
- Sensor not properly initialized or enabled in the drive's parameter settings (e.g., P3-10 for sensor type set to 'Disabled').
- Environmental conditions (e.g., extreme temperature outside sensor operating range -20°C to 80°C) preventing proper startup.
Repair Steps & Checklist
Click steps to track your progress.
- 1
1. Measure the supply voltage at the oil aging sensor's power input terminals (e.g., expect 24VDC ± 10% between positive and negative terminals).
- 2
2. Inspect all wiring connections between the oil aging sensor and the drive/control module for looseness, damage, or corrosion.
- 3
3. Verify sensor enable parameters in the drive (e.g., P3-10 set to 'Oil aging sensor DUV' and not 'Disabled').
- 4
4. If the sensor has local diagnostics (e.g., an LED indicator), observe its status for error codes or initialization state (e.g., solid green for ready).
- 5
5. Temporarily replace the oil aging sensor with a known good unit to determine if the sensor itself is faulty.