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Case studies
11 April 2024
Case studies
29 August 2023
Obsolescence of the oven’s 7 CC ALSTHOM drives
Number of project hours: 1,200 hrs
Project duration: 18 months, including two stoppage phases
Client expectation
The obsolescence of the oven’s 7 CC ALSTHOM drives, leading to the unavailability of spare parts, was making maintenance and repair impossible.
Our client therefore wished to replace these drives.
DV GROUP Solution
We suggested the following solution to our client:
- A preliminary analysis of the curve of currents used on each movement
- The replacement of the drive managing both motors simultaneously by two new drives, maintaining synchronisation.
- The implementation of continuous current MP 4 quadrant drives, which would be long-term and maintainable over time
- The creation of turntables in the workshop in order to minimise intervention time and the replacement of all the electro-technical equipment, including loop contactors
Implementation of 8 drives from 350A to 825A, 4-quadrant technology
Replacement of the ultra rapid contactors to break the loops
Preparation for network connection with the oven’s monitoring system
Analogue steering following this, at the client’s request
Work carried out
- Electro-technical design
- Electrical diagrams under See Electrical
- Creation of 6 solid-bottomed sheet base frames
- Removal of the electrical cupboards
- Fitting of the new base frames
- Commissioning
- Training
Clients gains and benefits
Our client has been able to take advantage of the full refurbishment of his installation. We have installed new, premium brand equipment which will be easily maintainable and repairable in the long term. This has therefore allowed stoppage times owing to breakages and troubleshooting to be reduced and now matches the client’s programmed stoppages.
Expertise
We provide you with engineering, maintenance and control solutions based on our knowledge of your processes.
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