Instantaneous power failure protection module for servo amplifiers
( Discontinued June 2023 )
- Stored energy can be supplied to servo amplifiers when an instantaneous power failure is caused by lightning or other reasons. This reduces the system downtime and prevents wasting time and material, enabling stable system operation.
- Challenge: No measure is taken against instantaneous power failure.

- Operation will stop unexpectedly when a power failure occurs.
Operation cannot restart smoothly, and material will be wasted.
- Solution: Use instantaneous power failure protection modules for servo amplifiers.

- Operation can stop properly as stored energy will be supplied to servo amplifiers to secure the power failure tolerance time.
Operation can restart smoothly, and material waste will be reduced.
Effect of measures
[Conditions: Motor speed: 3000 [r/min], initial bus voltage: 290VDC, and bus voltage when axis stops: 200VDC]
The power failure tolerance time increases from 0.73 s to 4.6 s.
* Tolerance time differs depending on the motor load at a power failure.
Model list
Instantaneous power failure protection module for servo amplifiers
| Model | Name | Remarks |
|---|---|---|
| DG2CP1 | Instantaneous power failure protection module for servo amplifiers | Regenerative energy storage capacitor module |