Wireless Profibus & Profisafe in mobil cranes in steel industry
Schildknecht AG www.schildknecht.info (CEO Dipl.Ing. Thomas Schildknecht) Profibus market growing
ARC: 700 000 total safety bus devices 630 000 installed profisafe
90% market share
wireless profibus in steal industry Schildknecht AG 2 Forcast Profibus market growing
SPS Magazin 4/2009 Profibus growing 2008 -2012 25 Mio to 50 Mio
wireless profibus in steal industry Schildknecht AG 3 Frost & Sullivan wireless study
wireless profibus in steal industry Schildknecht AG 4 Closed control loop with wireless Profibus
Profibus & Profisafe up to 1.5Mbit
SIEMENS S7 2,4GHz WLAN 2,4GHz Bluetooth 1,9GHz DECT 5GHz 802.11a 2.4GHz Zigbee Delay 20ms 25ms 50ms 20ms 100ms
wireless profibus in steal industry Schildknecht AG 5 Wireless QoS classification ISA-100
Application Description
•class 0 Emergency action always critical
•class 1 Closed loop regulatory control often critical
•class 2 Closed loop supervisory control usually non-critical
•class 3 open loop control human in the loop
•class 4 Alerting / Visualisation e.g. event-based maintance
•class 5 Logging, Up- Download historic data collection wireless profibus in steal industry Schildknecht AG 6 DATAEAGLE
•DATAEAGLE is worldwide the only system for transparent wireless profibus & profisafe
•Profibus speed 9600 up to 1.5Mbit
•No changes in PLC project or application because use of wireless
wireless profibus in steal industry Schildknecht AG 7 4 independend steel ferries
2.4GHz is forbidden by Salzgitter
Radio technology: 1.9GHz DECT
Fieldbus: Profibus DP 500kbit
PLC: Simatic S7 315 DP IO: Simatic ET200M
Installation: 2005
wireless profibus in steal industry Schildknecht AG 8 wireless profibus in steal industry Schildknecht AG 9 During Argon gas blowing process Final product after casting
wireless profibus in steal industry Schildknecht AG 10 Wireless Profibus / Profinet
wireless profibus in steal industry Schildknecht AG 11 Wireless Profibus / Profinet
wireless profibus in steal industry Schildknecht AG 12 Wireless Profinet / Profibus
Profinet & WLAN Profibus &Dataeagle
32ms profinet reduction 3ms profibus cycletime ratio
wireless profibus in steal industry Schildknecht AG 13 Anti collision protect for 2 full automatic cranes
Fieldbus: Profibus/Profisafe 500kbit
PLC: Simatic S7 317F (failsafe)
Safetytime 800ms
Customer demand: max 1 safetyerror in 48 hours
Realised reliability: >1 month
wireless profibus in steal industry Schildknecht AG 14 wireless profibus in steal industry Schildknecht AG 15 Measuring of fieldbus response time wireless profibus in steal industry Schildknecht AG 16 Studie Wireless Technologien
Studie VDC 2/2007:
„worldwide wireless networking products“
wireless profibus in steal industry Schildknecht AG 17 Need of coexistence management for high avalible radio communication links
wireless profibus in steal industry Schildknecht AG 18 Coexistence management
wireless profibus in steal industry Schildknecht AG 19 Results
There is not a unique radio technology avalible on the market, there are depending on the application practical or no practical using permanent coexistence management, there are good experience in long term application Wireless Profibus & Profinet yes but 802.11 b/g WLAN is not a good standard
Keep in mind: “No Wires” doesn´t mean “no Problems!”
wireless profibus in steal industry Schildknecht AG 20 Vielen Dank für Ihr Interesse
Weitere Informationen
www.schildknecht.info
wireless profibus in steal industry Schildknecht AG 21