Hydronix Ethernet Adapter, Руководство пользователя

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Hydronix Ethernet Adapter User Guide HD0333 Rev 2.1.0 15
Chapter 2 Connecting with Sensors
1 Installation
Depending on the installation option chosen, the system should be set up as shown in the
diagrams below. Terminal identification for each module is shown later in this chapter. In order to
maintain compliance with the relevant product directives, this equipment should only be installed
and used with the approved components supplied by Hydronix. Unauthorised modifications to
the units could void the units compliance and invalidate the users right to use the equipment.
1.1
Ethernet Adapter Only (EA01)
The most basic setup uses only the Ethernet Adapter and is arranged as shown below:
Cable To Sensor
Black
RS/485 A
RS/485 B
0v DC
24v DC
Colour
White
Black
Red
MILSPEC
F
G
B
A
EA01
Ethernet
Adapter
1
24v DC
Power Supply
0v 24v
10/100baseT
CAT5e
Ethernet
to network
Figure 2: Connections for Ethernet Adapter only
1.1.1 Location of the Ethernet Adapter (EA01)
The Ethernet Adapter should be mounted in the wiring junction box as close to the sensors
as possible, and protected from water and excessive dust. The Ethernet Adapter (EA01)
should be installed in such a manner as to prevent electro-static discharge to the Ethernet
“IN” port. Such a discharge may cause the unit to lock up and require a power “OFF –
ON” cycle to restore performance.
Connect the Ethernet drop cable from the network connection to the Ethernet port of the
Adapter. Connect a 24V dc supply to the 24V+ and 0V input terminals of the Ethernet
Adapter, ensuring that the power supply and wire is of a sufficient power rating to carry the
power for the number of sensors connected
Connect the RS485 sensor cable to the Ethernet Adapter outputs, taking care to note the
recommendations in the RS485 Wiring Recommendations later in the chapter.