Automation & Control HOmatic
PROFIenergy, a command can be sent from an industrial PLC to the device or machine, instructing it to the length of the break.
pinch valves: Ideal closing and measuring of bulk goods, liquids and gases
The device then decides for itself which parts can be switched off, in order to be ready for operation at the end of the break. It is irrelevant whether this device is an individual component, such as a drive or IO station, or a complex device such as a machine tool or robot. The command structure is always the same (Diagram 3).
Co-ordinated start-up In order to make the device ready for operation again, the user sends a starting command. This means a co-ordinated startup of the plant is possible, dependent on the application in question. And in order for the user to switch on devices with
different start-up times in a coordinated manner, these devices inform him of their startup time. This allows the user to calculate exactly when the activation command is to be sent. (Diagram 4). In this way, PROFIenergy meets the demand for simple
operation. This is the basis for wider acceptance. It also minimizes the engineering work required. The user only needs to incorporate the two commands
into his program. This enables him to make a hard and fast distinction between the actual control logic for the process and the energy management.
Function blocks Device and system manufacturers also have the opportunity to support the user by means of corresponding function blocks that, for example, conceal the processing of the communication mechanisms. In order to take into account the user’s requirement for
HOmatic
pinch valves: Innovation and quality that will pay off
VALVE ENGINEERING
HO-Matic AG Alte Obfelderstr. 55 CH-8910 Affoltern a. A. Phone: +41 (0)43 322 70 80 Fax: +41 (0)43 322 70 88 E-mail:
info@ho-matic.ch www.ho-matic.ch
Circle 45 or ✔ at
www.engineerlive.com/epe
Q.S.V. EP patent
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