Wieland samos - Detailed OR and Muting Functions

SA-BM Base Module
22
© 2010 Wieland Electric GmbH | BA000256 | 12/2012 (Rev. I)
Input Circuit Functions
OR function of function blocks 1 and 2
The off signal of an input function can be bridged with a OR
signal, for example with an enabling button for setup mode.
All the function blocks offer the possibility to link OR
function signals on the SA-IN input modules (function 7, see
page 39) with base module input signals by logical OR via
the SBus.
Additionally, the single function blocks 1 and 2 offer use of
the OR function on the base module itself via the two inputs
I3 and I4. U
x
+
is expected as the signal. Generation of an ON
signal (H-level) depends on several functions (see "System
Functions", page 46).
The OR function corresponds to an input circuit function
with dual-channel equivalent activation without cross-circuit
monitoring.
With a constant U
x
signal
+
on I3 and I4 and outputs Q1 to
Q4 switched on, the outputs remain switched on regardless
of the condition of the monitored safety sensors.
___________________________________________________________________________
Muting function of function block 3
The muting function is a conditional OR function, with
which for example muting sensors can briefly bridge a light
curtain function to allow material to be transported through a
light curtain.
Muting is only possible on base modules with single
function block 3, via inputs I3 and I4. U
x
+
is expected as the
signal. Generation of an ON signal (H-level) depends on
several functions (see “System Functions”, page 46).
Output Q3 controls the corresponding muting lamp. If
manual Reset is configured, the Q3 output additionally
indicates via periodical ON/OFF (0.5 s/0.5 s) that Reset is
expected at input S1 (Reset-Required).
The muting function in the base device corresponds to
an input circuit function with dual-channel equivalent
activation without cross-circuit monitoring.
With a constant U
x
signal
+
on I3 and I4 and outputs Q1, Q2
and Q4 switched on, the outputs remain switched on
regardless of the condition of the monitored safety sensors.
Muting of a safety function must not be dependent on a
single signal!
+
The U
x
signal can come from

supply voltage +U
B
,

the Q
x
semiconductor outputs on the base modules,

the OSSD outputs of muting light barriers (muting
function only).
OR function
NOTE
Muting function
NOTE