Kübler SMC1.3, Руководство по безопасности

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R60047.0002 - Index 2 EN – page 99 / 115
16.2 EDM: External relay at X4 with SIL1.
Precondition: 1 relay, 2 control outputs, 1 control input, auxiliary contact NC:
Parameter Setting Description
„Switch Mode OUT1“ 0 OUT1 to detect overspeed
„Switch Mode OUT2“ 9 OUT2 to generate clock signal
„Read Back OUT“ 0 No inversion (connection to /OUT1 via NC contact)
„IN3 Function“ 17 Adaption to OUT1 (overspeed)
„IN3 Config“ 14 Adaption to clock output OUT2 (via X24/2) contact)
„Input Mode 2“ 2 4 single inputs for free use
„Read Back Delay“ 0,050 Delay 50 ms to obviate contact bouncing
„Output Mode“ 0 Inverse configuration
Function:
With normal operation speed the inverted output /OUT1 is in HIGH state and the
relay is energized. The forcibly guided aux. contact therefore is open and the
clock signal is disconnected from to the input. Upon overspeed output /OUT1 will
descend to LOW and the remote relay will drop.
Errors in the clock circuit can only be detected while the relay is de-energized.
Under error condition the SMCx monitor will set all digital outputs to LOW, i.e.
the remote relay will be de-energized, which will signal “overspeed”. With errors
occurring under overspeed conditions, the unit will take an error state which
signals “overspeed” again (Safety Integrity Level = 1).
The main contacts can be used as opener or closer depending on the application.