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Latest level of brake system development for shaft hoisting systems

Innovation level 1 (1977)

Product familiy Single Channel I
Produktname

SIEMAG „ST1“ / GHH disk brake apparatus 1; SIEMAG „ST2“ / GHH disk brake apparatus 2
Characteristics
  • Not controlled
  • Residual pressure with constant braking power
Expiry date

2005

Number of applications for larger winding machines

 15

 

Innovation level 2 (1987)

Product family Single Channel II
Product name

SIEMAG „ST3“ (A = Koepe, B = Double Drum, D = China Edition)
Characteristics
  • Controlled with constant delay;
  • In cases of element breakdown: System switches to constant braking power
Expiry date

2008

Number of applications for larger winding machines

 97

 

Innovation level 3 (1988)

Product family

Multi Channel
Product name

SIEMAG „STN“ (N = channel number)
Characteristics
  • Controlled with constant delay;
  • In the event of element failure in a channel the system remains completely opened or is fully closed;
  • + 1: reserve channel as standby on request;
  • Relaunch of the hydraulic design 2014 by SIEMAG TECBERG
Expiry date

–

Number of applications for larger winding machines

 27

 

Innovation level 4 (2007)

Product family

Single Channel Controlled
Product name

SIEMAG TECBERG „SB1“ (China Edition: ST3 F)
Characteristics
  • Controlled with constant delay with redundant hydraulic system and control units;
  • In the event of element failure: System continues to be controlled with constant delay
Expiry date

–

Number of applications for larger winding machines

 82

 

Innovation level 5 (2013)

Product family

Twin Channel Controlled
Product name

SIEMAG TECBERG „SB1-2“
Characteristics
  • Controlled with constant delay with redundant hydraulic system and control units per channel;
  • In the event of element failure: System continues to be controlled with constant delay
Expiry date

–

Number of applications for larger winding machines

 10



 

SIL - safety integrity level

  • SIEMAG TECBERG has been working on the functional safety (SIL = Safety Integrity Level to IEC 61508) of its brakes (types STN + 1 and SB1-2) and on its own winder control system for years.
     
  • The brake system is the most important element to stop a winder safely and reliably. The stop signal from the winder control system must be executed by the braking system. In cases of SIL assessment of the winder control system, the braking system should therefore also be assessed for SIL.
     
  • In 2014 a SIL certification for winders was conducted at Tahmoor, Whenan and Cobar (all in Australia), resulting in a SIL 2 level.
     
  • Also STN + 1 SIL assessments were conducted for the multi-channel brake by third parties (winders for Northparks, Australia, and Mosaic, Canada, i.e. the design of a multi-channel hydraulic system does not automatically qualify it for a higher SIL level.
     
  • SIEMAG TECBERG BE 100 brake elements were assessed as safety-relevant components in 2014, resulting in a SIL 2 level. Use in SIL 3 applications is possible.
     
  • An SB1 braking system, together with the SIEMAG TECBERG winder control system is currently in the end phase of a SIL 3 certification process. Delivery to European customers are scheduled for 2019.
     


In short


SIEMAG TECBERG has many years of experience in the development and certification of functional safety (SIL) on its different braking systems and winding machine control systems. That is why SIEMAG TECBERG offers the latest braking technology with implemented sustained safety technology to an international SIL standard.

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