Control Unit Cu320-2 Pn (Profinet); Description - Siemens SINAMICS S120 Manual

NOTICE
Damage through use of incorrect DRIVE-CLiQ cables
The use of incorrect or unreleased DRIVE-CLiQ cables can cause damage or functional faults to
devices or the system.
• Only use suitable DRIVE-CLiQ cables that have been released by Siemens for the particular
Note
Malfunctions due to polluted DRIVE-CLiQ interfaces
Malfunctions can occur in the system through the use of polluted DRIVE-CLiQ interfaces.
• Cover unused DRIVE-CLiQ interfaces with the supplied blanking covers.
Note
Function equipotential bonding for distributed DRIVE-CLiQ nodes
Integrate all of the components that are connected via DRIVE-CLiQ in the functional
equipotential bonding concept. You make the connection by mounting on bare metallic
machine and plant units that are all connected to one another.
Alternatively, you can establish equipotential bonding with a conductor (min. 6 mm²), which is
routed as far as possible in parallel to the DRIVE-CLiQ cable. This involves all distributed DRIVE-
CLiQ nodes, e.g. DME20, SME20, SME25, SME120, SME125.
Note
Malfunction in the switched-off state due to diagnostic currents
Unlike mechanical switching contacts, e.g. emergency stop switches, diagnostic currents can
also flow when the semiconductor is in the switched-off state (logical state "0" or "OFF"). If
interconnection with digital inputs is faulty, the diagnostic currents can result in incorrect
switching states. Incorrect signal states of digital inputs can cause unwanted motions of
machine parts and trigger malfunctions.
• Observe the conditions of digital inputs and digital outputs specified in the relevant
manufacturer documentation.
• Check the conditions of the digital inputs and digital outputs with regard to currents in the
"OFF" state and if necessary connect the digital inputs to suitably dimensioned, external
resistors to protect against the reference potential of the digital inputs.
4.3

Control Unit CU320-2 PN (PROFINET)

4.3.1

Description

The Control Unit CU320-2 PN is a central control module in which the closed-loop and open-loop
functions are implemented for one or more Line Modules and/or Motor Modules. It can be used
with firmware version 4.4 or higher.
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2
application.
Control Units and operating elements
4.3 Control Unit CU320-2 PN (PROFINET)
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