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Lenze · Controller | Parameter setting & programming · Reference Manual · DMS 1.5 EN · 04/2014 · TD17 68

9 Data integrity in the event of a voltage failure

9.1 UPS functionality of the controllers

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9 Data integrity in the event of a voltage failure

9.1 UPS functionality of the controllers

9.1.1 Internal UPS (for Controllers without UPS connection)

In case of a voltage failure, retain/persistent variables, logbook data and visualisation data (e.g.

trends alarms) are saved.

The Controllers 3221 C/3231 C have an internal

buffer capacitor for the short-time buffering of the

data.

The Controllers c300/p300/p500 are equipped with a high-capacity, internal UPS for the storage of

data in the event of a voltage failure. This makes external energy storage dispensable. Voltage

fluctuations cannot be compensated for.

The UPS behaviour of the internal UPS is preset. Parameter setting is not possible/required.

Controller UPS functionality Saves backup files to ...

3221 C Internal capacitor for the short-time buffering of

data

MRAM (Magnetoresistive Random Access

Memory)

3231 C

3241 C External battery pack (ACCU-PACK) or capacitor

pack (CAPS-PACK)

Memory card

c300 Internal capacitor

p300

p500

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Lenze c300 Bedienungsanleitung Seite 68