Operation
EL191824 Version: 1.2.0
4.2.3.5 Notes on the arrangement of TwinSAFE components
The following notes show favorable and unfavorable arrangement of the terminals in relation to thermal
aspects. Components with higher waste heat are marked with a red symbol and components with low
waste heat with a blue symbol .
EtherCAT coupler EK11xx and power supply terminal EL9410
The more terminals are connected behind an EtherCAT coupler or a power supply terminal, the higher is the
E-Bus current, which must be supplied by their power supply units. As the current increases, the waste heat
of the power supply units is also increased..
EL69x0
The EL69x0 has a rather high waste heat because it has a high internal clock and high logic power.
EL2904
The EL2904 has a rather high waste heat, due to the possibly high output current of the connected
actuators.
EL1904
Even the EL1904 has a rather high waste heat, although the external load by clock outputs and safe inputs is
rather low.
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