Procedure in the event of failure to perform regular maintenance with the MDP92A and the MDS90A

If you have not performed maintenance regularly, SEW‑EURODRIVE recommends that you increase the line voltage slowly up to the maximum voltage. This can be done, for example, by using a variable transformer for which the output voltage has been set according to the following overview. After you have completed the regeneration process, the device can be used immediately or stored again.

The following graduations are recommended:

AC 400/500 V devices:

• Stage 1: 0 V to AC 350 V within a few seconds.
• Stage 2: AC 350 V for 15 minutes.
• Stage 3: AC 420 V for 15 minutes.
• Stage 4: AC 500 V for 1 hour.