6.3.4 Configuration of two infeeds connected in parallelConditionThe SINAMICS S120 supports the parallel connection of Line Modules under the followingconditions:● Same type● Same type rating:Available for following Active Line Modules: 55, 80 and 120 kW● Same rated voltage● Same firmware versionThe parallel connection of two Active Line Modules in booksize format must be supplied by ashared line connection and controlled synchronously by a shared Control Unit. The modulesmust not be connected to galvanically isolated lines.BenefitsFor space reasons, some applications require the use of Line Modules in booksize format, butthe available performance range with a single booksize Line Module is insufficient for theapplication.The parallel connection of booksize Active Line Modules offers the following advantages:● Extension of the power range by higher S1 and maximum powers for S120 in booksizeformat● Higher maximum prechargeable DC-link capacity up to 38 mF● Only a shared DC link with energy exchange between all connected drives is required.● Usable in Active Mode, Smart Mode and Extended Smart Mode of the infeed● Commissioning is simple because no additional parameter assignment is required.– The commissioning engineer sees only a larger Active Line Module.– No additional effort is required for commissioning and data backup.Commissioning NC-controlled drives6.3 Guided commissioning of SINAMICS drivesCNC Commissioning: NC, PLC, Drive124 Commissioning Manual, 12/2019, A5E48312804B AA
