Wieland samos - Logic Functions: OR-linked Safety Inputs; OR Logic for Muting and Bypass Functions

Logic functions
56
© 2010 Wieland Electric GmbH | BA000256 | 12/2012 (Rev. I)
OR-linked safety inputs (sensor inputs)
Actuation of muting sensors MU1 and MU2 automatically bridges the safety function of
light curtain LC1 by OR operation (MUTING); i.e. outputs Q1, Q2, Q4 remain on. Light
curtain LC1 must not be interrupted when the two muting sensors are actuated. Output Q3
controls the muting lamp.
OR-linked safety inputs (sensor inputs)
Actuation of muting sensors MU1 and MU2 automatically bridges the safety function of
light curtain LC1 by OR operation (MUTING); i.e. outputs Q1, Q2, Q4 remain on. Light
curtain LC1 must not be interrupted when the two muting sensors are actuated. Output Q3
controls the muting lamp. Actuating lockswitch S4 on the SA-IN-S1 activates the BYPASS
function for clearing the light curtain when power is switched on. BYPASS operates as an
OR operation on the base module SA-BM-S1 outputs via input module SA-IN-S1.
+ Combination
of flipflop + AND
operation
1* MUTING
the conditional OR-
combination is valid only
if the result of the Reset
function before was =1
(see pages 46/47).
+ Combination
of flipflop + AND
operation
1* MUTING
the conditional OR-
combination is valid only
if the result of the Reset
function before was =1
(see pages 46/47).
SA-IN-S1