Siemens SIMATIC ET 200SP Manual page 70

BaseUnits for motor starters
4.2 BU30-MS1 - BaseUnit with 24 V DC and 500 V AC infeed
Properties
● BaseUnit suitable for all fail-safe and non-fail-safe SIMATIC ET 200SP High Feature
motor starters
● The BaseUnit opens a new potential group (24 V DC). The power buses P1 and P2 are
interrupted to the left-hand neighboring module (BaseUnit, interface module/CPU).
● The BaseUnit opens a new potential group (500 V DC). The infeed bus L1 (L), L2 (N), L3,
PE is interrupted to the left-hand BaseUnit of the ET 200SP motor starter.
● Connection method using push-in terminals
● The touch protection cover for the infeed bus (3RK1908-1DA00-2BP0) is included in the
scope of delivery.
● The fail-safe input F-DI of the fail-safe motor starter is connected to the power bus.
Maximum configuration per voltage group (24 V DC)
The number of I/O modules that can be used per potential group depends on the following
factors:
1. Total power requirement of all I/O modules operated on this potential group
2. Total power requirement of all loads connected externally to this potential group
The total overall current calculated according to 1. and 2. must not exceed 7 A.
Maximum configuration of the infeed bus (500 V AC)
The number of motor starters that can be used per infeed group depends on the following
factors:
1. Total current requirement of all motor starters operated on this infeed group.
2. Ambient temperature and installation type in which the motor starters are operated.
You can find further information in the derating table in the Manual SIMATIC ET 200SP
motor starters (https://support.industry.siemens.com/cs/ww/en/view/109479973).
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BaseUnits (6ES7193-6BP.../3RK1908-0AP00...)
Manual, 12/2016, A5E03727049-AG