SA-BM Base Module
24
© 2010 Wieland Electric GmbH | BA000256 | 12/2012 (Rev. I)
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.
___________________________________________________________________________
ON
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
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.
___________________________________________________________________________
ON
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
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
inputs.
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The Reset function of manual and automatic Reset is defined by connecting terminals
S1/S2
with supply voltage
+U
B
or the module’s own clock output
X1
. (Here terminal
S1
is
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).
Starting inhibit
Restarting inhibit
Manual reset
Reset button and feedback
circuit between
S1
and
supply voltage
___________________________________________________________________________
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
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.
Starting lockout
NOTE
Restarting lockout
NOTE
NOTE
Reset function
NOTE
Summary of Contents for samos
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