Description - Siemens sinamics dcp Operating Instructions Manual

Description

Area of application
A SINAMICS DCP is used to control the electrical power flow between two direct current
systems. The device can be operated with current control or voltage control.
The main application of the SINAMICS DCP is to control the electrical power flow:
● from a DC link (the input side, terminals P1 and N1) into a stationary battery (the output
side, terminals P2 and N2).
● from a battery (the output side, terminals P2 and N2) back to the DC link (the input side,
terminals P1 and N1).
The power flow in both directions (from the DC link to the battery and from the battery to the
DC link) is called bidirectional.
The voltages in the two DC circuits are independent of one another.
The electrical power flow, controlled by a signed current setpoint specification, is possible
irrespective of the voltages in the two DC circuits (in the nominal range).
The integration of a SINAMICS DCP in a complete technical system is illustrated in Chapter
Block diagram with connection suggestion (Page 40).
Design
The SINAMICS DCP are compact devices and contain power units and open-loop/closed-
loop control electronics.
The open-loop/closed-loop control electronics comprise several modules.
The module visible when the front plate is removed is called CUD (Control Unit DC).
LEDs are fitted on the CUD and other modules. They are not visible externally. They are not
relevant for the user, they are only used for diagnostics by SIEMENS experts.
The power units are made up of semiconductor switches; the heat sink is grounded.
The devices are forced-ventilated, the air flow is from the bottom to the top.
The minus cable is led from the input to the output, the current is controlled in the plus
branch.
The devices are only approved for cabinet mounting, vertical installation.
Communication with the devices is via fieldbus (PROFIBUS or PROFINET) during normal
operation and STARTER for the parameter assignment and diagnostics.
SINAMICS DCP
Operating Instructions, 05/2016, A5E34382853K
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