Control Circuit Functions - Wieland samos User Manual

SA-BM Base Module

Control Circuit Functions

You can set the Reset behavior of the base modules by configuring terminals S1/S2 and
connecting Reset buttons, bridges or feedback circuits from external contactors/relays.
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 ON
Starting lockout
When power is switched on and the inputs are in safe state the base module expects a
Reset (if restarting inhibit ON) or actuation on at least one input circuit (if restarting
inhibit OFF).
The enabling input does not act as an input circuit on the monitored sensors, i.e. the
NOTE
starting inhibit is not canceled by switching the EN signal off and on again. In combination
functions 5, 6, 7 the starting inhibit in group B is not canceled by a signal change on the
Reset function in group A; the signal change must occur in group B.
 OFF
The outputs switch on immediately after power is switched on and the inputs are in safe
state.
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 ON
Restarting lockout
For resetting the safety function after a safety event the base module expects the Reset
button to be operated. This realizes the required manual Reset after emergency stop (or
switching back on after the safety zone has been entered and left again).
The Reset button must be operated for between 50 ms and 5 s. In combination functions
NOTE
5, 6, 7 the restarting inhibit in group B must always be canceled by the Reset button.
In function 3, the expected Reset signal is indicated via blinking output Q3 (Reset-
Required).
 OFF
Automatic Reset after safety event and restoration of safe state of inputs.
Elimination of a cross circuit is also immediately defined as restoration of safe state of
NOTE
inputs.
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The Reset function of manual and automatic Reset is defined by connecting terminals
Reset function
S1/S2 with supply voltage +U
shown; in functions with separate evaluation of function groups A and B terminal S2 and
clock output X2 are used equivalently for group B; see the table on page 26).
 Manual reset
Reset button and feedback
circuit between S1 and
supply voltage
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 Automatic reset
Bridge or feedback circuit
between S1 and clock
output
During the configuration phase (after power on) of manual Reset (with Reset button) the
NOTE
corresponding S output must be open or connected to a high-ohm output (e.g. a PLC).
High or low potential will result in incorrect configuration.
24
or the module's own clock output X1. (Here terminal S1 is
B
Starting inhibit
© 2010 Wieland Electric GmbH | BA000256 | 12/2012 (Rev. I)
Restarting inhibit