Black Box ACS201A Manual de usuario descargar pdf (Pagina 4)

Integration Note

A BlackBox interface converter (DVT part # CON-4T2) is currently offered as an option to be

shipped with 600 systems. This converter has a RJ-11 plug on the RS-422/485 side and a 9-pin

female D connector on the RS-232 side (See Figure 4). It was chosen to interface with a PC RS-

232 port. The converter obtains power from the RS-232 side of the connection. Specifically from

either the DTR (pin 4), the RTS (pin 7) or RI (pin 9). When interfacing with a PC port, the

converter sees these signals and can draw power from them. The ABB port provides does not

provide power on the serial port so the BlackBox converter cannot draw power from the

connection and communications are not possible.

Figure 4: BlackBox Converter (Optional with DVT Systems)

Possible Known problem:

Communication between a DVT 600 and the ABB controller using the converter provided as an

option with DVT systems may not work. The converter needs 6-12 volts supplied to certain pins

in order to obtain power.

Several solutions to this problem and the advantages and disadvantages of each will be

discussed.

Solution #1

Use a different interface converter that is powered externally. Several options will be presented

here. The prices vary depending on the type of isolation and complexity of the devices.

BlackBox offers several converters that are powered by 115 VAC, 60 Hz. Although they provide

extremely good isolation and configuration flexibility, the foot print of these converters is about 5 x

8 inches and they are priced higher.

RS-232-RS-422/485 Converter Plus : Part # IC108A List price : $259

RS-232-RS-422/485 Converter Plus w/Opto-Isolation:

Part # IC109A-R2 List price : $308

For information on other converters visit www.blackbox.com.

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Black Box ACS201A Manual de usuario Pagina 4