Case No. 01 · Harbor crane
Modernization of a 12-ton harbor crane
Replacement of obsolete Mannesmann converters with Emotron, STEP 7 adaptation and crane commissioning.
Task
Obsolete Mannesmann frequency drives were still in use on the harbor crane. The technology was no longer supported by the manufacturer, spare parts were unavailable, and in the event of a fault the crane could have been out of service for an undefined period of time.
Technical data
- 12-ton harbor crane
- Mannesmann → Emotron
- 5 Frequency drives
- Siemens Step 7
- Hook and grab operation
- Remote service via engineering PG
What was implemented
- Complete technical project analysis
- Selection of new hardware in consultation with the manufacturer
- Adaptation of the circuit diagrams
- Preparation of installation documentation
- Adaptation of the existing STEP 7 program
- Integration of the new drives into the control system
- Parameterization of the frequency drives
- On-site commissioning
- Preparation of an engineering PG for remote service
Result
- The crane was successfully modernized and commissioned
- The risk of downtime was significantly reduced
- Migration to modern and serviceable technology
- Remote diagnostics and support were made possible