Contents
1. GENERAL INFORMATION...................................................................................................................................................................... 3
1.1. WARRANTED INFORMATION....................................................................................................................................................... 3
1.2. GENERAL CONDITIONS FOR SAFE USE.................................................................................................................................... 3
1.3. CE LABEL....................................................................................................................................................................................... 3
1.4. ENVIRONMENTAL PRESERVATION............................................................................................................................................ 3
1.5. SERVICE AND MAINTENANCE..................................................................................................................................................... 3
1.6. PACK CONTENTS.......................................................................................................................................................................... 3
2. PRODUCT INFORMATION..................................................................................................................................................................... 3
2.1. PROPERTIES................................................................................................................................................................................. 3
2.2. DESCRIPTION................................................................................................................................................................................ 4
2.3. CURRENT LOOP TRANSMITTER................................................................................................................................................. 4
2.4. CURRENT LOOP RECEIVER........................................................................................................................................................ 4
2.5. ISOLATION..................................................................................................................................................................................... 5
3. INSTALLATION....................................................................................................................................................................................... 5
3.1. ASSEMBLING................................................................................................................................................................................. 5
3.2. CONNECTION TO RS232 COMPUTER PORT..............................................................................................................................5
3.3. CONNECTION TO RS485/422 BUS............................................................................................................................................... 6
3.3.1. CONNECTION TO RS485 4-WIRES BUS.............................................................................................................................6
3.3.2. CONNECTION TO RS485 2-WIRES BUS.............................................................................................................................7
3.3.3. EXTENDER TYPE CONNECTION......................................................................................................................................... 8
3.3.4. LINE TERMINATION.............................................................................................................................................................. 9
3.4. CONNECTION OF CURRENT LOOP INTERFACE DEVICE.........................................................................................................9
3.5. CONNECTION TO CURRENT LOOP BUS OF DEVICES WITH RS485/RS422 INTERFACE......................................................9
3.6. POWER SUPPLY CONNECTION................................................................................................................................................ 10
4. CONFIGURATION................................................................................................................................................................................. 10
4.1. OPERATING MODE SETTING..................................................................................................................................................... 10
4.2. FACTORY DEFAULT.................................................................................................................................................................... 10
5. ACTIVATION......................................................................................................................................................................................... 10
6. VERSIONS............................................................................................................................................................................................ 11
7. SPECIFICATION................................................................................................................................................................................... 11
2
ADA-4020
