Timber industry
CONTROL SYSTEMS OPEN LOOP
(Speed variation in asynchronous motors without feedback).
Advantage
• More control. No extra cost.
External PLCs and patch cables increase the cost of materials. In addition, the time required to install additional components must be taken into account, as well as the extra cost of keeping those components in stock. This is why internal PLCs have been added to the M200 and M300 general purpose drives. They offer a great savings opportunity at no extra cost.
• Easy Integration.
A programming environment, Machine Control Studio, has been designed. Furthermore, the IEC 61131-3 standard is complied with. This means that you can use common programming languages like:
Structured text, function block diagrams, ladder diagrams, and instruction lists.
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Example of savings with Control Techniques Open Loop drives:
• Intelligent fault recognition Pumps for
sewage water
.
An Onboard PLC can be used to monitor the current a pump draws.
•Washing machines
The Onboard PLC system can accept commands, for example from a push button, and execute a defined number of programs.
• Access barriers
Along with additional sensors, the Onboard PLC can execute simple logic to open or close an access barrier.