Application planning
4.2 Selecting motor starters with a suitable BaseUnit
Distributed I/O system
40 System Manual, 09/2019, A5E03576849-AJ
4.2 Selecting motor starters with a suitable BaseUnit
4.2.1 Selecting a BaseUnit for motor starters
The motor starter BaseUnits "BU30-MS1", "BU30-MS2", "BU30-MS3" and "BU30-MS4" are
compatible with all non-fail-safe motor starters. The motor starter BaseUnits "BU30-MS1",
"BU30-MS2", "BU30-MS3", "BU30-MS4", "BU30-MS5", "BU30-MS6", "BU30-MS7", "BU30-
MS8", "BU30-MS9" and "BU30-MS10" are compatible with all fail-safe motor starters. You
will find an overview of available BaseUnits for motor starters here (Page 33). With the
different BaseUnits, you can form different potential groups for the 24 V DC electronics
supply (L+/M) and for the AC infeed.
Voltage range
The voltage range of the AC infeed is between 48 V AC and 500 V AC.
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