40
Battery Is Low
Indramat · ServoDyn D Servo Drive
What does 40 mean?
This condition occurs when the lithium back-up battery, located on the MOK 11 card, which is responsible for retaining CLM01.3-M memory (programs, parameters, counter status) during power OFF, falls below its minimum voltage level.
Common Causes
- The 3.6-volt lithium back-up battery is depleted or has critically low voltage.
- The back-up battery is disconnected or poorly seated on the MOK 11 card.
- Faulty MOK 11 card preventing proper battery charging or monitoring.
- Prolonged power off periods, leading to battery drainage.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Turn OFF all power to the CLM01.3-M.
- 2
Carefully remove the Memory and Battery Module (MOK 11 card) from its slot (refer to Figure 2.3 in the manual).
- 3
Replace the 3.6-volt lithium battery with a new, compatible replacement.
- 4
After battery replacement, all parameters and program data will be lost; re-enter them from a backup or manually (refer to Chapters 4 and 5).
- 5
Ensure the new battery is securely installed and the MOK 11 card is properly re-seated.
Verified technical data. Last updated: March 2026
Related Faults
Source: Indramat ServoDyn D Servo Drive