2.4. ISOLATION
ADA-4040PC8 converter has 3-way galvanic isolation on the levels 1kV= or 3kV=, depend on version described in section
VERSIONS
.
Fig 2. Isolation structure
3. INSTALLATION
This chapter will show how to use and connect ADA-4040PC8 to JCT controllers (VIRAP* company with RS485 interface); to RS485 /
RS422 bus and power supply
In the purpose of minimization of disruptions from environment is being recommended to:
- apply multipair type shielded cables, which shield can be connected to the earthing on one end of the cable,
- arrange signal cables in the distance not shorter than 25 cm from powering cables.
- apply cable of adequate cross-section due to voltage drops for converter powering,
- use suppression filters for powering converters that are installed within a single object.
- not supply converter from power circuit device that generates large impulse interference such as transmitters, contactors.
3.1. ASSEMBLING
Casing of ADA-4040PC8 is adapted it assembly he TS-35 (DIN35) rail. It install the converter, should ugh mounted he the rail upper
part of the cover then press bottom part it hear characteristic "Click" sound.
3.2. COMPUTER CONNECTION
To connect ADA-4040PC8 to computer, is needed additional converter e.g. ADA-I9141 USB to RS485/RS422 converter; connected to
JCT port (5-pins connector) of ADA-4040PC8.
Typical connections of ADA- 4040PC8 to PC are shown bellow.
Fig 3. 4-Wires connection of ADA-4040PC8 to PC by the use of ADA-I9141 USB to RS485/RS422 converter.
Fig 4. 2-Wires connection of ADA-4040PC8 to PC by the use of ADA-I9141 USB to RS485/RS422 converter.
3.3. RS485 NETWORK CONNECTION
RS485/RS422 interface in ADA-4040PC8 converter is available on terminal block, described as: Tx+/A, Tx-/B, Rx+, Rx-. Connection of
ADA-4040PC8 to RS485(4W) and RS485(2W) network are shown bellow.
5
ADA-4040PC8
POWER
10 - 30VDC
JCT-ASCII
RS485
MODBUS-RTU
RS485/RS422
3-WAY ISOLATION
GND
USB
USB
connector
RS485 / RS422
connector
USB
connector
ADA-I9141
USB
Rx+
Rx-
Tx+/ A
Tx-/ B
Tx+ / A
Tx- / B
Rx+
Rx-
RTU
RS485 / RS422
connector
Tx+ / A
Tx- / B
GND
Rx+
Rx-
JCT
RS485 / RS422
connector
GND
PC
ADA-4040PC8
GND
USB
PC
USB
Rx+
Rx-
Tx+/ A
Tx-/ B
Tx+ / A
Tx- / B
Rx+
Rx-
Tx+ / A
Tx- / B
GND
Rx+
Rx-
GND
ADA-I9141
ADA-4040PC8
USB
connector
RS485 / RS422
connector
USB
connector
RTU
RS485 / RS422
connector
JCT
RS485 / RS422
connector
