item Controller BL 1-04 /C
― Product manual
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4.3.1 Qualification of the specialist personnel (personnel requirements)
The device may only be set into operation by a qualified electrical technician who is familiar with:
▪ the installation and operation of electrical control systems
▪ the applicable regulations for operating safety-oriented systems
▪ the applicable regulations for accident protection and industrial safety
▪ the documentation for the product.
4.3.2 Diagnostic coverage (DC)
The diagnostic coverage depends on the integration of the safety functions, which are integrated in the servo drive, into the
overall system and on the implemented diagnostic measures.
If a malfunction is detected during the diagnosis process, appropriate measures must be taken to maintain the safety level.
INFO
Cross-circuit detection
Check whether your application requires a cross-circuit detection of the input circuit and of the connecting wiring.
If necessary, use a safety relay with cross-circuit detection for actuating the safety function
4.4 Purpose
As processes become increasingly automated, protecting persons against potentially hazardous movements is continuously
gaining in importance. Functional safety describes the necessary measures in the form of electrical or electronic devices for
the reduction or elimination of hazards caused by malfunctions. Under normal operating conditions, protective devices and
guards prevent human access to danger areas. However, in certain operating modes, e.g. during set-up, persons are required
to be present in these danger areas. In these situations, the machine operator must be protected by way of drive- and con
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trol-system-related measures.
The integrated functional safety technology provides the control-system- and drive- specific conditions for the optimal realisa
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tion of protective functions. As a result, planning and installation become less labour-intensive. The use of integrated functional
safety technology leads to an enhanced machine functionality and availability compared to the levels achieved by conventional
safety technology.
4.5 Principle of operation and use
The STO function includes the feature "Realisation of the "Safe Torque Off" (STO) function".
The "Safe Stop 1" (SS1) function can be realised with a suitable external safety relay and by suitable wiring of the servo drive.
