No.1004E 2008Special Issue on Industry-Related Products Study of Machine Safety Control |
| Category | TECHNICAL REPORT |
|---|---|
| Author | N. MIYAWAKI Mechatronics Control Design Department, Machine Tools & Mechatronics Division Headquarters |
| Abstract | Since the establishment of ISO12100 (machine safety basic concepts and design-related general principles) in 2004, machine makers in Japan have been paying great attention to design safety. Especially in the machine control field, safety protection control measures based on system risk assessment are required. In accordance with the popularity of safety control measures, safety machine control systems with a reliable and user-friendly safety PLC (programmable logic controller) have been widely used. "Machinery Safety" refers to the safety of machines including the control system. This document describes safety design measures, safeguards, complementary protective measures, and additional protection measures based on ISO12100. Furthermore, the applicable scope of safety PLC and applicable stop categories according to the international safety standard are described regarding fail-safe safety systems including safety PLC supporting such measures using JTEKT's safety PLC TOYOPUC-PCS as an example. Concrete fail-safe control systems using a safety PLC are also described. |
| Keyword | machine, inherent safety, functional safety, fail safe, safety PLC |
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