Abstract
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 7th International Conference on the Safety of Industrial Automated Systems |
| Subtitle of host publication | SIAS 2012 |
| Place of Publication | Montreal |
| Pages | 121-126 |
| Publication status | Published - 2012 |
| MoE publication type | B3 Non-refereed article in conference proceedings |
| Event | 7th International Conference on the Safety of Industrial Automated Systems, SIAS 2012 - Montreal, Canada Duration: 11 Oct 2012 → 12 Oct 2012 |
Conference
| Conference | 7th International Conference on the Safety of Industrial Automated Systems, SIAS 2012 |
|---|---|
| Abbreviated title | SIAS 2012 |
| Country | Canada |
| City | Montreal |
| Period | 11/10/12 → 12/10/12 |
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Keywords
- Machines
- control function
- safety
Cite this
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Evaluating performance levels of machine control functions. / Hietikko, Marita; Malm, Timo; Alanen, Jarmo; Saha, Heikki.
Proceedings of the 7th International Conference on the Safety of Industrial Automated Systems: SIAS 2012. Montreal, 2012. p. 121-126.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
TY - GEN
T1 - Evaluating performance levels of machine control functions
AU - Hietikko, Marita
AU - Malm, Timo
AU - Alanen, Jarmo
AU - Saha, Heikki
N1 - Project code: 71112-1.7.3
PY - 2012
Y1 - 2012
N2 - According to the basic machinery safety standard ISO 13849-1, the capability of a machine control system to perform a safety function is expressed using performance levels (PL). This paper brings out some challenges in the process of evaluating performance levels for safety related machine control functions. One of these examines the use of different cabling schemes in the implementation of a safety function and its effect on the PL evaluation. The challenges are highlighted using a generic example of a safety function relating to a mobile work machine where different technologies (electrical, hydraulic and pneumatic) can be utilized. A safety stop function with different structures was used as an example in PL calculations. Analogue cables in mobile work machines can cause a remarkable risk, since they are vulnerable to disturbances and failures. A part of these failures may be difficult to detect. In this study it was detected that by replacing analogue cabling with digital communications the reachable PL can be increased.
AB - According to the basic machinery safety standard ISO 13849-1, the capability of a machine control system to perform a safety function is expressed using performance levels (PL). This paper brings out some challenges in the process of evaluating performance levels for safety related machine control functions. One of these examines the use of different cabling schemes in the implementation of a safety function and its effect on the PL evaluation. The challenges are highlighted using a generic example of a safety function relating to a mobile work machine where different technologies (electrical, hydraulic and pneumatic) can be utilized. A safety stop function with different structures was used as an example in PL calculations. Analogue cables in mobile work machines can cause a remarkable risk, since they are vulnerable to disturbances and failures. A part of these failures may be difficult to detect. In this study it was detected that by replacing analogue cabling with digital communications the reachable PL can be increased.
KW - Machines
KW - control function
KW - safety
M3 - Conference article in proceedings
SN - 978-2-89631-635-9
SP - 121
EP - 126
BT - Proceedings of the 7th International Conference on the Safety of Industrial Automated Systems
CY - Montreal
ER -