Basic Structure - Siemens SINAMICS S120 Function Manual

7.12.2

Basic structure

Description
DRIVE-CLiQ can be used to connect an Active Line Module (ALM) to a Control Unit (CU)
and Voltage Sensing Module (VSM) to create an infeed train. A Motor Module (MoMo) can
be combined with a Sensor Module Cabinet (SMC) or Sensor Module External (SME) and a
Control Unit to create a drive train. If one of the modules develops a fault, only the affected
train will fail. This failure can be signaled to the higher-level controller as a fault message via
read parameter r0863.0, for example. The fault is evaluated in the user program of the
higher-level controller, which sends corresponding signals to the other infeeds. If a higher-
level controller is not used, the fault can be evaluated by means of DCC charts in the Active
Line Modules.
All the other trains remain fully functional, which means that they can continue operating
normally.
Features
● The "Master/slave" function can be used only in conjunction with Active Line Modules.
● One Active Line Module is the master and up to three others are slaves.
● If the master fails, a slave ALM takes on the role of the master.
● The redundant infeeds can continue functioning normally even if one infeed train has
● Electrical isolation between the infeed trains is needed on the line side to prevent
● The entire infeed system supplies a joint DC busbar (DC link).
● Since the Active Line Module cannot detect whether the DC link is disconnected or a DC
● The higher-level controller communicates with the CUs and Active Line Modules via
● Infeed trains with different outputs can be combined.
Drive functions
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
failed.
circulating currents caused by non-synchronous pulsing patterns.
link fuse has blown, an additional circuit to monitor these states must be installed (DC
breaker checkback function and fuse signaling contacts).
PROFIBUS/PROFINET or analog data. If a higher-level controller is not to be used, the
control signals must be hard-wired (e.g. via TM31).
7.12 Master/slave function for Active Infeed
Function modules
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