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ETAS
3.5
Power Supply
3.5.1
Power Supply of Module
An external power supply or the vehicle battery supply the module with current.
3.5.2
Power Supply of Half-bridges (Power Stages) at the "PS"
Connection
The power MOSFETs of the six Half-bridges require a separate supply voltage
for operation. The separate supply voltage must be provided at the "PS" con-
nection and is used jointly by all Half-bridges.
NOTE
The ES930.1 module and the Half-bridges (power stages) at the "PS" connec-
tion are supplied via separate voltage supply connections.
NOTE
The power supply of the ES930.1 module at the "IN" connection and the
power supply of the Half-bridges (power stages) at the "PS" connection can
be switching on or off in random order.
3.5.3
Power Supply of a Single Module
The ES930.1 module uses a daisy chain topology for cabling with the PC and
additional modules.
The Ethernet data line and the power supply are looped through the daisy chain
connections of the module:
•
"IN" (input)
•
"OUT" (output)
The PC, the ES600 network module, the ES910 or the ES720 drive recorder are
connected at the "IN" (input) connection. The "OUT" (output) connection is con-
nected with the subsequent ES930.1, ES63x or a module of the ES400 series or
remains open at the last module of the chain.
3.5.4
Power Supply of additional Modules chained via Ethernet
In the simplest application case, the modules are directly chained at the daisy
chain connections "IN" and "OUT". For this purpose, they are connected with the
supply voltage via the respective preceding module.
3.5.4.1
Additional Supply of the Modules via a Y Boost Cable
If the supply voltage should be too low at the infeed point (at the input) of a
module due to the power consumption of the preceding modules, a multiple
infeed of the supply voltage can ensure a sufficient supply voltage for this mod-
ule and the following modules in longer module chains.
ES930.1 - User Guide
Hardware Description
21
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