24/7 Energy Efficiency — How to Benefit from Energy Management

Related Vendors

TURCK GmbH

Anton Paar GmbH

ProMinent GmbH

Siemens AG I IA AS

Siemens AG

Reasonable Investment in Measured Value Detection

A load management system, by means of which electricity procurement can be influenced in certain areas, has been in place on the site for about ten years. Supplementing this system, the introduction of the central detection acquisition and management system allows for expanded data acquisition and evaluation. “We have invested a considerable amount in measured value detection over the last months”, explains Norbert Welz who is responsible for the planning of energy management and open- and closed loop control at InfraTec.

For the new energy management system, the previous measuring points were supplemented by approximately 85 electricity meters, five inductive flow meters and six orifices for steam flow measuring.

All in all, ten energy node points on which the individual measured values from the field are collected are now distributed throughout the entire Duisburg industrial park. From there, they are transferred to a special Simatic AS 414H controller by means of the distributed I/O system via Profibus. 9,800 meters of measuring cables, 2,900 meters of optical fiber cables and 650 meters of voltage cables had to be newly installed. Welz comments: “Cable routing accounted for the highest expenditures by far.”

Setup of the system for data acquisition and data provision in the Simatic PCS 7 process control system, which is used in the industrial park, was realized by the Siemens-certified Solution Partner LMS Automation domiciled in Duesseldorf. Subsequently, the Simatic B.Data energy management system, which is based on the process control system and has direct access to all energy and process data of PCS 7, was implemented by Siemens. As the first step, approximately 450 measured values are evaluated, balanced and accounted in B.Data. “A system consistency modeled after Totally Integrated Automation (TIA) as open system architecture by Siemens offers outstanding advantages to us”, praises Norbert Welz.

For example, distributed Simatic ET 200M I/O stations which bundle the measuring signals from the field are employed in the energy node points. As mentioned above, these signals are then transferred to the central control via Profibus. Some measuring points such as electricity meters, analog flow meters for the well water as well as some water meters are transferred to the node points via M-Bus and corresponding M-Bus couplers. Welz explains: “This concept is not only simple and transparent, but also offers ease of handling.”

(ID:34651410)