Drives: Ethernet adapter provides Web-based remote access

If a process alarm or fault occurs, the internal Web server allows access to process variables, says ABB.


New Berlin , WI– s. The DIN rail-mounted SREA-01 Ethernet Adapter from ABB Low Voltage Drives enables remote access to the company’s low voltage ac drive line. If a process alarm or fault occurs, the internal Web server of the unit allows access to the drives and other process variables.

Designed to optimize the remote interface of ABB ac drives that have a Modbus-RTU port, the SREA-01 can send process data, data logs and event messages independently—without a PLC or a dedicated on-site computer. Says product manager Greg Semrow, “If no qualified service personnel are onsite, it is vital to be able to monitor and configure the drive or process variables remotely. This makes the SREA-01 an extremely valuable tool for plant engineers & managers, system integrators, OEM’s and service personnel who demand to be connected to the process” no matter where they are.

The adapter can connect a maximum of 10 drives to an Ethernet or GPRS(1) network. The SREA-01 comes with an Ethernet port and a serial port for connecting to a standard GSM/GPRS(1) modem for internet connectivity in isolated places. The modem connection can be used for sending e-mail or SMS(2), messages, uploading data files via FTP(3), or accessing the Web pages of the module.

Users can collect data logs and integrated drive data in SCADA (supervisory control and data acquisition) applications, via the interface, as well. For collecting data from the drive for process monitoring or further analysis, the SREA-01 has a configurable data logger with sample intervals from 10 seconds to one hour.

Separately, in December 2008, ABB marked the manufacture of the one millionth ABB standard (general purpose) drive, type ACS550 and ACH550. It was the first ABB drive range to hit this significant figure. “When it was launched, this drive series had pioneered several firsts, like intuitive user interface and swinging choke technology for harmonic reduction. The control panel, in particular, has been a trendsetter,” says Panu Virolainen, ABB vice president, component AC.

ABB offers three drive families—industrial drives, standard drives, and machinery drives—which have been evolving continuously. ACS/ACH550 series products are standard drives for standard applications in the industrial and the HVAC/commercial markets. The first ACS/ACH550 drive was manufactured at ABB’s Helsinki factory in 2003. For more help, see " Battery-operated tool speeds programming of hundreds of drives ."

Renee Robbins , senior editor
Control Engineering News Desk
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