System overview
1.7 Components and combinations
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
65
1.7.5 Function modules
Figure 1-31 Function modules
Function modules are used to perform various control jobs on automatic production lines and
for processing machines. They are suited to all time-delayed switching operations in control,
starting, protection, and regulation circuits, and ensure a high degree of repeat accuracy for
delay times, once they have been set.
Function modules are divided into those with a communication connection (AS-Interface or
IO-Link) and those without a communication connection.
Communication-capable 3RA27 function modules are available for the following contactors
and contactor assemblies:
● For direct-on-line start
● For reversing start
● For star-delta (wye-delta) start
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