ES415.1 - User’s Guide
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ETAS
4.5
Power Supply
4.5.1
Supply Voltage
DC/DC converters in every module guarantee both the operation as well as the
launch of the ES400 modules with supply voltages between 5 V and 50 V DC
over the entire temperature range.
With the power supply management of the ES415.1, you can use an automatic
power-saving feature (“Standby”) as well as a “Wake Up” function via the Ether-
net interface.
4.5.2
Supplying the ES400 Modules via the Connecting Line
In the simplest application case, the modules are directly linked to one another.
They are connected to the supply voltage via the previous module all the way.
4.5.3
Additional Supply of the ES400 Modules via a Y-Boost Cable
If the supply voltage at the input of a module is too low because of the current
consumption of the previous modules, multiple feeding of the supply voltage can
guarantee this and the following modules sufficient supply voltage in longer
module chains.
In this application case, you have to split the module chain. Swap the existing
connection cable between the two modules for a Y boost cable for additional,
direct feeding of the supply voltage. The module chain is now closed again and
the power supply of the following modules guaranteed.
The special design of the Y boost cable avoids reverse feeding into the front parts
of the module chain and thus arising potential differences.
When is it necessary to use a Y boost cable?
An exact calculation of the current consumption of a module chain is only possi-
ble if numerous variables are known:
• supply voltage of the first module at the input
• minimum supply voltage at the last module of the chain
• number and type of the modules
• consumption of sensor power supply of the connected sensors
• cable length
• cable type
• ambient temperature
The necessary minimum voltage for supplying power to the system must be
determined individually for each test set-up.
Example 1:
For module chains which are equipped exclusively with ES410.1 or
ES441.1, ETAS recommends the use of Y boost cables if the length of the module
chain is longer than 10 modules.
Note
Please contact our local experts to discuss your particular ES415.1 configura-
tions.