Simple control solution

January 2001 PLCs, DCSs & Controllers

A Red Lion motor drive controller, Model MDC, is used to control the speed of the film as it passes through the chemical solutions. A Model RPGC0061 (rotary pulse generator, 100 pulses/rev) is used as a feedback signal for the MDC. The RPGC is attached at a one-to-one ratio with a roller that measures 460 mm in circumference.

Customer requirements

* Control of the film speed in mm/min.

* Allow the operator to feed the film into the machine by 'jogging' the motor slowly.

* 'Ramp' slowly to the setpoint speed when a 'run' is initiated.

* Prevent the operators from starting the machine before the temperature of the chemical is brought up to setpoint (a Red Lion Model TCU with alarms is used for this function).

* If film speed error exceeds 300 mm/min alert operator with an audible alarm.

* Alarm will be reset via external pushbutton.

* Inform operator if RPGC signal is not received by the MDC.

The figure illustrates the simple implementation of all the functions required by the customer.

Further reading:

Innovating control and display solutions
PLCs, DCSs & Controllers
Mimic Group, founded in 1971, started with electronic and mimic displays before expanding into control desks, software and display electronics.

Read more...

---

ABB technology for greater circularity in metals and mining industries
PLCs, DCSs & Controllers
ABB has been selected by GreenIron, an innovative Swedish company working in the mining and metals industries with its patented materials reduction technology, to provide automation and control system solutions for a first commercial facility in Sandviken, Sweden.

Read more...

---

EtherCAT Box modules for confined spaces
Beckhoff Automation PLCs, DCSs & Controllers
Users of EtherCAT and EtherCAT P Box modules from Beckhoff’s EP and EPP series benefit from 25 years of IP67 expertise in the I/O sector. The broad product range for decentralised distribution of the I/O level directly at the machine or system has been continuously expanded and further developed during this time.

Read more...

---

ABB updates distributed control system
ABB South Africa PLCs, DCSs & Controllers
Leveraging 30 years of continuous innovation and reliability, ABB’s updated Freelance 2024 distributed control system (DCS) offers greater plant adaptability, faster and more reliable device communication, improved system security, and seamless data exchange.

Read more...

---

Four ways modern operations control can boost sustainability and efficiency
PLCs, DCSs & Controllers
With the growing importance of digital transformation, HMIs and scada have evolved from control panels to vast operational hubs. Next-gen HMI/scada can bring together data, personalisation, and advanced insights to successfully achieve organisational goals, it is important to think about HMI/scada holistically within the operations ecosystem.

Read more...

---

The convergence of intelligence: DCS, SCADA and TLC
Schneider Electric South Africa PLCs, DCSs & Controllers
In the early days of industrialisation, control systems were primarily mechanical, and relied on manual intervention and simple feedback loops to manage processes. Now, in the 21st century, industrial process automation systems are mind-blowingly intelligent, and provide almost unparalleled control and monitoring capabilities, making them integral to modern industrial systems.

Read more...

---

PC-based control for advanced hydrogen storage technology
Beckhoff Automation Editor's Choice PLCs, DCSs & Controllers
The proportion of renewable energies from solar, wind and water is rising continuously. However, sufficient storage options are of the essence to use these energies as efficiently as possible. GKN Hydrogen offers a particularly compact and safe option, low-pressure metal hydride hydrogen storage systems with PC-based control from Beckhoff.

Read more...

---

ABB modernises key board mill
ABB South Africa PLCs, DCSs & Controllers
ABB has secured a landmark contract to modernise Smurfit Kappa’s Paper Machine 5 at its corrugated cardboard mill near Mexico City. ABB will provide Smurfit Kappa with DCS, accompanied by a comprehensive paper machine drives system, encompassing some of the market’s most advanced drives and motors meticulously designed to optimise PM5’s performance.

Read more...

---

The synapses of the distributed control system
Schneider Electric South Africa PLCs, DCSs & Controllers
Industrial operations require a distributed control system (DCS) to coordinate and control their process subsystems in real time. Like the brain, a DCS is a multitasking maestro, controlling and coordinating complex processes in a myriad of industrial setting such as large manufacturing plants, providing valuable top-down control.

Read more...

---

Modular assembly platform for clean manufacturing
Beckhoff Automation PLCs, DCSs & Controllers
JR Automation delivers custom automated solutions for numerous industries. It has done this through its scalable, modular automation platform, FlexChassis, which speeds up time to market while cutting costs. The company chose the XTS linear transport system from Beckhoff because of its speed, and modular design that allows for multiple configurations.

Read more...

---