Autonomous Operating Mode For Drive-Cliq Components - Siemens SINAMICS S120 Function Manual

12.11

Autonomous operating mode for DRIVE-CLiQ components

Description
In order to protect the drive system against excessive voltage when the CU or DRIVE-CLiQ
communication fails (e.g. while a spindle is rotating), an autonomous operating mode
(emergency operation) is implemented in DRIVE-CLiQ components for the following
functions:
● Chopper mode (for Basic Line Module 20kW / 40kW in combination with an external
● Integrated voltage protection for machines with a high kinetic energy (armature short
Features
● Resumption and re-synchronization of DRIVE-CLiQ communication in emergency mode
● Switchover from emergency mode to normal mode without POWER OFF / ON on the
● Defined response with factory setting / project download.
Principle of operation
Autonomous time-slice operation is dependent on successful execution of the following two
tasks:
● Detection that a critical state has developed on the component which means that the
● Attainment of a state in which communication with the higher-level control can be
Drive functions
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
braking resistor).
circuit controlled by the Motor Modules on the basis of the DC link voltage).
when necessary (only if clock cycle conditions have not changed) and without POWER
ON.
component.
Note
Autonomous (emergency) operation is available only on Motor Modules and Basic Line
Modules with order numbers which end with the code ..3, e.g. 6SL3130-6TE21-6AA3, .
protective function must be maintained.
In this state, the time-slice interrupts of the protective function must be sustained.
resumed.
12.11 Autonomous operating mode for DRIVE-CLiQ components
Basic information about the drive system
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