Valves, Actuators & Pump Control


AS-i valve monitoring and control

February 2001 Valves, Actuators & Pump Control

Topworx (GO Switch), as a leader in on/off valve control, has recently launched its digital valve monitors/controllers which are available in either AS-i or DeviceNet platforms for rotary actuators.

These low-cost intelligent devices provide for live instrument diagnostics, while saving costs of installation and commissioning, as well as space-saving. Installation is simplified due to the only wiring requirement being a single two or four-wire cable for the device as well as peripheral sensors, thus eliminating costly cabling.

Using the Lumitech range of controllers, a wide range of industrial devices can be connected to PCs and PLCs, such as sensors, limit switches, valve manifolds, motor starters, actuators and drives, thereby providing easy networking, and remote management of devices. These units can be mounted directly to any NAMUR actuator, without requiring special brackets.

The AS-i controller can connect up to 31 devices, with the number of I/O points being 248. This unit also operates on 24 to 30 V d.c. and can easily gateway into most Fieldbus networks, including Profibus, DeviceNet, Modbus, Ethernet, etc. The AS-i controllers can also operate directly in hazardous areas (Class 1, Div.2 - Zone 2), provided that proper wiring practices are adhered to - ie conduit protection of cables. The DeviceNet controller can connect up to 64 devices, and eliminates the need for expensive gateways. It also supports numerous diagnostic functions, while operating on 11 to 30 V d.c.

All valve controllers include sealed bus communications, position sensors, solenoid valves, and terminations in a single module. These units are also corrosion and water-resistant.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

High-flow solenoid valve
Emerson Automation Solutions Valves, Actuators & Pump Control
Emerson has introduced the new ASCO Series 327C solenoid valve, which features a direct-acting, high-flow design that provides superior flow-to-power ratio. It permits high flows at minimum power levels, making it ideal for use in power plants, refineries, and chemical processing facilities.

Read more...
Proportional cartridge valve series is the fastest in its class
Valves, Actuators & Pump Control
Parker Hannifin is introducing the enhanced version of the proportional cartridge throttle valve series, TFP. The new pilot valve further reduces the step response times by up to 30%, making the TFP the fastest valve in its class.

Read more...
Proportional cartridge valve series is the fastest in its class
Valves, Actuators & Pump Control
Parker Hannifin is introducing the enhanced version of the proportional cartridge throttle valve series, TFP. The new pilot valve further reduces the step response times by up to 30%, making the TFP the fastest valve in its class.

Read more...
Inspection system for leak detection in valves in hazardous areas
Extech Safety Systems Valves, Actuators & Pump Control
Leaking valves in industrial plants not only lead to loss, safety risks and possible contamination and pollution, but also result in high economic costs. Therefore, valves in hazardous areas require regular proper inspection and preventive maintenance to ensure their functionality.

Read more...
Control head for automation of hygienic process valves
Burkert South Africa Valves, Actuators & Pump Control
Burkert’s Type 8681 control head is optimised for decentralised automation of hygienic process valves. Thanks to its universal adapter, it can be combined with all normal commercial butterfly valves, ball valves and single- and double-seated valves.

Read more...
Hydroformed tube valve body
Burkert South Africa Valves, Actuators & Pump Control
One of the most common necessities for manufacturing pharmaceuticals, cosmetics, food and beverages are diaphragm valves. What used to be a dull two-way race between forged and cast body variants is now being challenged by an exciting, ground-breaking technology. The hydroformed, light-weight diaphragm tube valve body will change the way you think about plant design and operation.

Read more...
Global pumping giant ready to support hydrogen economy
Valves, Actuators & Pump Control
With abundant sunshine and wind, southern Africa is perfectly positioned to become a global powerhouse in green hydrogen production. Two key projects are already in advanced stages of development in Namibia. KSB has identified the vast potential of these types of projects in southern Africa, and through its KSB Pumps and Valves subsidiaries in Namibia and South Africa is investing heavily in bringing the right skills to the region.

Read more...
Compact valve position indicator
Emerson Automation Solutions Valves, Actuators & Pump Control
Emerson’s new TopWorx DVR Switchbox is an entry-level addition to the DV Series of valve position indicators. It combines a durable resin enclosure, compact size, and a patented cam design that provides a reliable valve position feedback for water and wastewater systems, food and beverage production lines, and industrial utilities.

Read more...
Precision, control and performance in regulators and control valves
Valve & Automation Valves, Actuators & Pump Control
Cashco has long been a trusted name in industrial control solutions, offering a broad range of regulators and control valves designed to meet the rigorous demands of various industries. There are two key Cashco product lines, its regulators and the Ranger QCT control valve.

Read more...
Advanced solutions for valves
Bearing Man Group t/a BMG Valves, Actuators & Pump Control
BMG delivers state-of-the-art valve solutions to diverse industries across Africa, in collaboration with InterApp, a global leader in the design and manufacture of high-quality valves.

Read more...