PLCs, DCSs & Controllers


Intelligent loadcell transmitter is PC-configurable

September 2007 PLCs, DCSs & Controllers

Danntech's new competitively priced loadcell transmitters provide 24-bit accuracy. These compact transmitters are configured to suit application requirements via a PC and configuration program.

Loadcell excitation is 2,5 or 5 volts with useable bridge resistances from 200 Ω upwards. Selectable input measurement ranges are ±20 mV, ±40 mV, ±80 mV, ±160 mV, ±320 mV, ±640 mV, ±1.280 V and ±2.560 V. Various output types can be chosen from 4 to 20 mA, 0 to 20 mA, 0 to 5 V, 0 to 10 V, ±5 V and ±10 V.

Using the powerful configuration software, the transmitter can have any part of any of the input ranges mapped to any output range. For example if 0 to 100 kg produces a millivolt input range of +5 to 47 mV then this can be set up to produce an output of 12 to 20 mA if required.

The two relay outputs can be configured as alarms with selectable operating sense and hysteresis. A simple ASCII protocol is used on RS485 to connect multiple units a control module or a control system.

The transmitter can be used in a passive mode, where it operates like a remote terminal unit (RTU) with a 24-bit loadcell input, a 12-bit analog output, two relay outputs and two LED outputs each individually controllable.

The unit is 24 V d.c. powered and three way isolation up to 1000 V a.c. ensures trouble-free operation in process control environments where ground loops and noise may be prevalent.

The four input version is available with five isolated 4-20 mA outputs, one for each loadcell input and one for the summation of all the inputs. In addition to this, a summed and simulated loadcell output is available so that this transmitter can appear to an existing loadcell system, as if it was simply four loadcells hardwired in parallel.

For more information contact Luchelle Naidoo, Danntech, +27 (0)11 792 1239, [email protected], www.danntech.com



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Megatech is expanding
PLCs, DCSs & Controllers
Megatech SA has been importing high quality industrial plant equipment and spare parts since 2016. Based in KwaZulu-Natal, the company specialises in electrical and mechanical equipment and instrumentation.

Read more...
Powerful and versatile IIoT controller
ifm - South Africa PLCs, DCSs & Controllers
The IIoT controller from ifm is a powerful, communicative and flexible PLC solution in machine and plant digitalisation.

Read more...
ACTOM Industry to upgrade drive and control system
ACTOM Electrical Machines PLCs, DCSs & Controllers
ACTOM Industry secured an important contract to upgrade the drive and control system of a man-winder at a gold mine in Ghana.

Read more...
Powerful and versatile IIoT controller
ifm - South Africa PLCs, DCSs & Controllers
The IIoT controller from ifm is a powerful, communicative and flexible PLC solution in machine and plant digitalisation.

Read more...
ACTOM Industry to upgrade drive and control system
ACTOM Electrical Machines PLCs, DCSs & Controllers
ACTOM Industry secured an important contract to upgrade the drive and control system of a man-winder at a gold mine in Ghana.

Read more...
MCCs for local and international markets
Iritron PLCs, DCSs & Controllers
With a history of delivering large engineering projects globally, Iritron has over 20 years’ experience in designing motor control centres (MCCs) built to the highest international specifications.

Read more...
Deep learning based component inspection in the automotive industry
Beckhoff Automation PLCs, DCSs & Controllers
Achieving the shortest possible inspection times – even when working with different components – is paramount when it comes to series production. This is precisely what stoba Sondermaschinen achieved with its optical inspection system, which is based on deep learning, and features the Beckhoff XPlanar planar motor system at the conveyor system core.

Read more...
Case history 189: Poor furnace temperature control.
Michael Brown Control Engineering Editor's Choice PLCs, DCSs & Controllers
Many process engineers do not appreciate the importance of flow loops in their unit controls. A senior process engineer once told me that flow loops need not be tuned well, as they generally have little effect on the more important and much slower loops like temperatures and pressures.

Read more...
PLCs and PACs simplify data acquisition
PLCs, DCSs & Controllers
Data acquisition, data logging and data analysis are required functions for most modern industrial control systems. The simplest and lowest cost way to provide these functions is often by using the same platform that’s providing real-time control, namely the PLC or the programmable automation controller.

Read more...
Enhanced perimeter defence solution
Emerson Automation Solutions PLCs, DCSs & Controllers
Emerson is improving perimeter security for the DeltaV distributed control system with its new NextGen Smart Firewall, a purpose-built control system firewall designed to provide easy-to-install and maintain perimeter security for all industries.

Read more...