Leuze electronic
MC3x
35
The safety-related parts of the control include, in addition to the Safety Relay, sensor and actuator
described above, the subsequent control elements up to the power-transfer elements that are to be
stopped safely and timely. Special attention must be given here to the adherence to the required safety
category. Important information on this topic can be found in harmonized European standard
EN ISO 13849-1.
Essential prerequisite for the safe operation is the possibility of electrically influencing the interruption of
the dangerous movement as well as a sufficiently short machine stand-still time. These must be incorpo
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rated in the calculation of the safety distance as must the response times of the safety-related chain
(Safety Relay, sensors, contactors, etc.).
Prerequisites for start-up:
Safety Relay, sensor and actuator are mounted according to these instructions and connected
according to the wiring plan
operating personnel have been trained in the correct use
The dangerous process is switched off, outputs of the MSI-MC3x are disconnected and the system is
protected against being restarted
During start-up, test the function of the sensors and the Safety Relay (see chapter 8 Testing ).
Prior to the initial start-up on a power-driven machine, make certain that a competent person inspects
the connection of the connected guard at the Safety Relay as well as the integration of the complete
system in the machine control.
Before switching on the supply voltage for the first time, make certain that the outputs of the Safety
Relay have no effect on the machine.
Make certain that the switching elements that put the machine which poses a danger into motion are
safely switched off or disconnected and are protected against being restarted.
Requirements for the supply voltage (power supply unit):
Safe mains separation is ensured (acc. to IEC 60742).
Current reserve of at least 2 A available
The start/restart interlock function (where foreseen) connected and activated.
The guard is closed and has not been stepped around.
Check whether the green power LED on the MSI-MC3x illuminates constantly.
Check whether LEDs K1 and K2 of the MSI-MC3x switch off upon opening of the guard
The MSI-MC3x Safety Relay and the sensor are ready for use.
The reset button can be used to unlock the start/restart interlock (where foreseen). In this way, the respon
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sible person can restore normal operation of the system following process interruptions (triggering of the
protective function, failure of the voltage supply) (see chapter 7.7 Unlocking start/restart interlock ).
Make certain that the entire device and the integration of the protective device was inspected by com
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petent and instructed persons.
Make certain that a dangerous process can only be started while the guard is closed.
The same safety measures apply after each function change, after repairs or during maintenance
work.
Содержание MC330-S1x
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