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ESERA-Automation, E-Service GmbH 2019
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11302-U V1.5 R1.2 Manual
Page 1 of 6
Art. No. 11302-U
User Guide
1-Wire Bus Coupler USB V3
Galvanic separation of the 1-Wire network and the
computer
LEDs for power and 1-Wire activity
Top-hat rail case for switchboard assembly
Power supply of 9
– 30 VDC via external power adapter
(not included in scope of delivery)
Connection via screw terminals
Easy software-based control
Low space requirement in the switchboard
Easy to assemble
1
Introduction
Before you start assembling the 1 Wire Bus Coupler USB
V3 and before you take the device into operation, please
read these assembly and operating instructions carefully to
the end, especially the section referring to the safety notes.
2
Product description
The
1 Wire Serial Bus Coupler USB V3
establishes a stable, electrically isolated connection among a 1-Wire
network and a computer. Special feature of the 1-Wire Bus Coupler USB V3
is an external voltage supply. Thus,
operating safety of the data connection to a computer will significantly be enhanced. Issues caused by unreliable
USB voltage supplies will be avoided. The use of more expensive USB hubs is no longer necessary.
The 1-Wire output of the bus coupler is isolated among the USB data supply and the voltage supply. Thus,
ground loops or EMC emissions and grounding issues from a computer to the 1 Wire network are efficiently
prevented. The isolation significantly reduces stray radiations ("electric smog") in living areas and enhances
electric safety among the systems. For galvanic isolation state-of-the-art high-speed optocouplers and special
isolated power adapters are being used. Even the 1-
Wire „data“ LED is isolated controlled by optical coupler
The 1-Wire component DS2480 from Dallas/Maxim is used within the 1-Wire Bus Coupler. This component,
combined with the complex internal voltage supply, is the basis for a very stable 1-Wire network. The DS2480
component supports the „Strong Pull Up“ function and is thus predestined for the use in large 1 Wire networks as
well.
For the voltage supply, the 1-Wire Bus Coupler has a wide-range input of 9-32VDC and is thus equally suitable
for 12V systems and typically industrial 24VDC supplies. You can find compatible top-hat rail power adapters or
socket power adapters in our webshop.
Individual 1-Wire sensors can be connected directly. For major 1-Wire networks it is recommended to use a
1-Wire Hub III.
Please refer to the connection plan for further details in regards to the electric connection.
