Kübler SMC1.3, Руководство по безопасности

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R60047.0002 - Index 2 EN – page 100 / 115
16.3 EDM: 2 external relays at X4 with SIL2
Precondition: 2 relays, 2 control outputs, 1 control input, auxiliary contact NC, NO:
Parameter Setting Description
„Switch Mode OUT1“ 0 OUT1 to detect overspeed
„Switch Mode OUT2“ 9 OUT2 to generate clock signal
„Read Back OUT“ 1 Inversion
„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 control-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, output /OUT1 is in HIGH state and output OUT1 is
in LOW state. With overspeed, output /OUT1 is in LOW state and output OUT1 is
in HIGH state. Therefore, at any time one of the relays is energized while the
other one is de-energized.
The clock loop is closed with normal speed and interrupted with overspeed.
The GND lines of the two relays must be independent one from each other.
Errors in the clock circuit can only be detected with the clock loop closed. In case
of errors the SMCx monitor will set all digital outputs to LOW, i.e. both relays will
drop and overspeed will be indicated. In case of errors in the clock loop during
overspeed, an error signal will be produced and overspeed will be indicated.
(Safety Integrity Level = 2).
The main contacts can be used as opener or closer depending on the application.