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8. VERSIONS

ADA-4020A - 

-

-

-

Order example:
Product Symbol: 

ADA-4020A-1-1-2-3

1

 – Current Loop Voltage 24VDC,

1

 – Current Loop Type ± 20mA,

2

 – 1kV= galvanic isolation,

3

 – cover without inlets, plug-in screw 

terminal block.

Current Loop Voltage:

24VDC

1

12VDC

2

Current Loop Type:

± 20mA

1

0 - 20mA

2

Galvanic isolation:

1kV=, 3-way

2

3kV=, 3-way

3

Terminal & Terminal Cover:

Cover without inlets, screw terminal block

1

Cover with inlets, screw terminal block

2

Cover without inlets, plug-in screw terminal block

3

9. SPECIFICATION

TECHNICAL DATA

Transmission Parameters

Interface

RS-485/RS-422

Current Loop

Connector

Screw terminal, wire max. Ø 2,5mm

2

Screw terminal, wire max. Ø 2,5mm

2

Line length

Up to 1200 m

Depends on baud rate up to a few

kilometres

Maximum number of connected device

Up to 32

1

Maximum baud rate

230,4 kbps

38,4 kbps

Transmission line

Twisted cable 1-pair or 2-pair , UTP 

Nx2x0,5 (24AWG), shield inside large 

interferences STP Nx2x0,5(24AWG).

2-pair twisted cable, UTP Nx2x0,5 

(24AWG), shield inside large 

interferences STP Nx2x0,5(24AWG).

Transmission type 

Asynchronism full duplex, half duplex.

Standards

EIA-232, CCITT V.24, EIA-485, CCITT V.11

Optical signalisation

PWR – green LED power supply,

RX - red LED data receiving from Current Loop,

TX - yellow LED data transmission through Current Loop CLO.

Electrical Parameters

Power requirements

10 - 24 – 30 V DC

Power Cable

Recommended length of power cable – up to 3m

Power

2W

Protection from reverse power polarization

YES

Galvanic Isolation

1kV= or 3kV= DC between power circuit and RS485/422 and Current Loop signal 

lines

Optoisolation 

 3kV= between signal line RS-485/422 and Current Loop 

Electromagnetic compatibility

Resistance to disruptions according to the standard PN-EN 55024.

Emission of disruptions according to the standard PN-EN 55022.

Safety requiring

According to the PN-EN60950 norm.

Environment

Commercial and light industrial.

Environmental Parameters

Operating temperature

-30 ÷ 60°C

Humidity

5 ÷ 95% - non-condensing

Storage temperature

-40 ÷ 70 °C

Casing

13

ADA-4020A

Summary of Contents for ADA-4020A

Page 1: ...User manual ADA 4020A Addressable RS485 422 to Current Loop Baud Rate Converter 1 io_ada 4020a_en v 4 02 ADA 4020A Copyright 2001 2017 CEL MAR sp j...

Page 2: ...TO RS485 2 WIRES BUS 7 3 3 3 GND TERMINALS CONNECTION 7 3 3 4 LINE TERMINATION 7 3 3 5 CONNECTION OF CURRENT LOOP DEVICES 7 3 4 POWER SUPPLY 7 4 ACTIVATION 7 4 1 SIGNALING LEDS 8 5 CONFIGURATION 8 5 1...

Page 3: ...the assembly or dis assembly of the device if it is enabled This may result to short circuit and damage the device The device can not be used for applications that determine human life and health eg...

Page 4: ...baud rate up to 230 4 kbps via one or two pairs of twisted pair cables of RS485 422 interface and up to 38 4 kbps on 4 wires Current Loop bus ADA 4020A is equipped with screw terminal block for conne...

Page 5: ...connection of transmitter to receiver Review diagram of the receiver is shown on figure below Fig 2 Review diagram of the transmitter receiver Current Loop ADA 4020A Converter 2 5 ISOLATION Converter...

Page 6: ...as Tx A Tx B Rx Rx Below are shown connection of ADA 4020A converter to RS485 4W bus and RS485 2W bus 3 3 1 CONNECTION TO RS485 4 WIRES BUS Fig 6 Example connection of ADA 4020A to RS485 4 wires bus a...

Page 7: ...th current loop interface to ADA 4020A are shown on Fig 6 Fig 7 3 4 POWER SUPPLY The power supply to ADA 4020A should be DC regulated from the scope 10 V to 30V and nominal power more then 2W The powe...

Page 8: ...ly If after power on the front panel is not lit green LED PWR check the power connection polarity If the PWR LED lights set the section of SW1 switch to configuration mode as in table below SW1 1 SW1...

Page 9: ...ace operates in receiving transmitting data mode for RS485 bus 2 wires and 4 wires signal DE On RS485 RS422 interface operates in RS422 mode After configuration the setting should be saved on converte...

Page 10: ...as shown in the table below SW1 1 SW1 2 OFF OFF Yellow LED will be OFF 5 4 EMERGENCY FIRMWARE UPDATE In case of the unsuccessful update of the converter software try again according to description in...

Page 11: ...A 4020A converter s configuration and correctness connection of RS485 bus and Current Loop device to the converter ports After finishing the diagnostics the SW1 micro switch should be set to standard...

Page 12: ...duplex mode on RS 422 and RS 485 4 wire bus Additionally can be set data flow control for RS485 RS422 interface according to pt CONFIGURATION BY THE USE OF ADACONFIG On a picture below are shown the...

Page 13: ...ferences STP Nx2x0 5 24AWG 2 pair twisted cable UTP Nx2x0 5 24AWG shield inside large interferences STP Nx2x0 5 24AWG Transmission type Asynchronism full duplex half duplex Standards EIA 232 CCITT V 2...

Page 14: ...ryl UL 94 V O Degree of casing protection IP40 Degree of terminal protection IP20 Weight 0 10 kg According to standard DIN EN50022 DIN EN43880 Position during operation Free Mounting Rail mounting acc...

Page 15: ...15 ADA 4020A...

Page 16: ...transmission converters with interface RS232 RS485 RS422 USB Ethernet Wi Fi Current Loop Fibre Optic Converters and other Please contact us to tell how you like our products and how we can satisfy you...

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