New Family of Versatile Isolators and Splitters Protect Process Equipment And Provide Power to Input Devices for the Value Conscious User

Acromag’s 630T Series AC/DC-powered 4-20mA loop isolators and signal splitters feature an internal excitation supply to drive up to two 2-wire transmitters or other field devices with outputs that drive up to 1000 ohms..

Acromag’s new 630T series of multi-channel isolators provide an economical and space-efficient solution to eliminate ground loops, filter signal noise, and block high voltage surges. These inch-wide single/dual-channel isolators receive 4-20mA inputs and provide fully isolated 4-20mA output signals. Signal splitter models provide two identical outputs from a single input. A built-in excitation supply delivers power for 2-wire transmitters or other input loop devices to eliminate the cost of external power supplies. The isolator power requirement is very flexible, operating off  either 90-250V AC or 15-36V DC with a 4-wire connection.

ARC Research Director Wil Chin commented, "With these new products, Acromag is offering users an easy solution to a long-standing problem of equipment isolation while maintaining signal accuracy and safety in manufacturing.   This new family of isolation products expands Acromag's portfolio of cost-effective I/O products to provide one-stop-shop convenience to automation professionals.” more

The price on Acromag's Industrial Ethernet 5-Port Switch was just reduced $100. This unit has a Class I Div. 2 rating and delivers reliable performance over a -25 to 70°C temperature range. Full isolation (power-to-network and port-to-port) adds protection from high-voltage surges and increases noise immunity. The unit is also hardened for harsh environments to resist RFI, EMI, ESD, and EFT signals. With support for wide-range DC-power, redundant backup power connections, and easy DIN-rail mounting/removal, you’ll find this unit is an outstanding value.

Profibus-DP I/O Modules were also reduced 20%. The 900PB Series is a high-performance line of distributed I/O modules. These units feature universal input/output ranges and an intelligent microcontroller to provide extreme flexibility and powerful monitoring and control capabilities. Select from a variety of analog and discrete remote I/O models to meet your application requirements.

New Representatives

Acromag is pleased to announce several new representatives to assist you with all your process instrumentation needs.

Duncan Company servicing North and South Dakota, Minnesota, Northwest Wisconsin, and East Iowa.

Durkin, Inc. Eastern Missouri and Southern Illinois

Rawson LP Louisiana, Southern Mississippi, and Southern Arkansas

To receive our latest product literature, use our request form.

Download our newest white paper Introduction to Modbus TCP/IP written by Acromag's Design Engineer, Bruce Cyburt. PDF, 290 KB

How to Configure the Wonderware® MBENET I/O Server to Communicate with Acromag's EtherNet/IP and Modbus TCP/IP Modules. PDF, 97 KB

New Signal Conditioning and Distributed I/O Solutions Product Catalog is now available for download. 

This new catalog includes all of our newest products along with several pages of application notes.

Download, PDF 7.2 MB

Question: We need to add another loop controller to one of our systems. However, this would push us past our 600-ohm loop maximum. We see fairly expensive solutions to remedy this, but wonder if there is an inexpensive way to get around this type of problem.

Answer: There are three classical solutions to solve the loading problem. First, check to see if the second controller supports a voltage input. If so, perhaps you could monitor the voltage drop across a device that already exists on the loop, e.g., the 1-5V DC input on a DCS or PLC analog input card. With this approach you may be able to solve the application without any additional costs or loading on the primary 4-20mA loop. However, you'll want to "parallel sense" the last load in the loop to keep everything referenced to a single grounding location. Otherwise, you may run into grounding issues. And, you'll want to keep your voltage wiring runs down to 50 ft. or less to avoid voltage drops and noise pickup.  -more-

Congratulations to Mr. Licinio Alves of the Naval Underwater Warfare Center. He was the winner of the April 1, 2005 digital camera drawing. To enter our next drawing for a Sony digital camcorder, please go to www.acromag.com/win.cfm and use your first name as your ID number.

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Acromag, Inc.
30765 S. Wixom Rd.
P.O. Box 437
Wixom, Michigan 48393-7037
Phone: 248-624-1541
Fax: 248-624-9234
e-mail: answers@acromag.com
www.acromag.com

"The great tragedy of science - the slaying of a beautiful hypothesis by an ugly fact." 

Thomas H. Huxley