Fig 3. Digram of Current Loop transmitter & receiver in ADA-13020
2.5. ISOLATION
The ADA-13020 converter has 3-way, 1kV= or 3kV= galvanic isolation, depend on version described in section
VERSIONS
.
Fig 4. Isolation diagram
3. INSTALLATION
This chapter will show how correctly connect ADA-13020 to devices with Current Loop interface, LAN/WAN network and power supply.
To reduce disturbance from environment, it is recommended to:
– use shielded twisted multipair type cables, which shield should be connected to the grounding on one end of the cable,
– lay signal cables at a distance not less than 25 cm from power cables,
– use suitable diameter cable for power supply on account of voltage drop,
– use the interference eliminators for powering the converters installed in the range of some building,
– not powering the converters form power-circuit of devices generate large impulse disturbance like contactors, relays, inverters.
3.1. ASSEMBLING
The ADA-13020 converter case is adapted to assembly on TS-35 (DIN35) rail. To install the device on TS-35 should be the upper part
of the casing put hooks on the terminal and then press the bottom of the cover until you hear a characteristic "Click" sound.
3.2. ETHERNET NETWORK CONNECTION
The ADA-13020 has to be connected to ETHERNET network by the use of the switch, the HUB or directly to the PC network adapter.
The table below shows preparing of the straight cable for converter connection to switch or hub.
Table 1.
RJ45 Pin No.
Signal
Wire Color
EIA/TIA 568B
Straight cable
UTP 4x2x0,5
Wire Color
EIA/TIA 568B
Signal
RJ45 Pin No.
1
TX+
White-Orange
2
TX-
Orange
3
RX+
White-Green
4
Not used
Blue
5
Not used
White-Blue
6
RX-
Green
7
Not used
White-Brown
8
Not used
Brown
White-Orange
TX+
1
Orange
TX-
2
White-Green
RX+
3
Blue
Not used
4
White-Blue
Not used
5
Green
RX-
6
White-Brown
Not used
7
Brown
Not used
8
Table below show preparing of crossover cable for converter connection to network adapter of PC or converters together for operating
like point-to-point serial bridge.
7
ADA-13020
Power Supply
10 - 30VDC
ETHERNET
Current Loop
3-WAY ISOLATION
TX-
I= 0 / 20mA
or
I= -20 / +20mA
I
TX+
RX-
R=560
W
/ R=1000
W
Passive Receiver
RX+*
Active - Transmitter
RX+
TX-
I= 0 / 20mA
TX+
Passive - Transmitter
U=12VDC / U=24VDC
