Application planning
3.2 Selecting motor starters with a suitable BaseUnit
Distributed I/O system
38 System Manual, 12/2016, A5E03576849-AG
Selecting motor starters with a suitable BaseUnit
3.2.1
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" and "BU30-MS6" are compatible with
all fail-safe motor starters. You will find an overview of available BaseUnits for motor starters
here (Page 32). With the different BaseUnits, you can form different potential groups for the
24 V DC electronics supply (L+/M) and for the AC infeed.
The voltage range of the AC infeed is between 48 V AC and 500 V AC.
Selection criteria for the BaseUnit
The figure below shows the criteria you use to select the appropriate BaseUnit:
Form separate potential groups on the infeed bus for single-phase (L, N, PE) and three-
phase (L1, L2, L3, PE) operation.
To Next Page
Loading...
