24
EN
6.3.2. Cross-circuit monitoring
• The cross-wire short monitoring function (factory setting) is programmed by means of the switch under-
neath the front cover of the safety-monitoring module.
• The switch must only be operated in de-energised condition by means of a finger or an insulated blunt tool.
Pos. nQS (top): Not cross-wire short proof: QS-LED off
• Suitable for 1-channel applications and applications with outputs connected to potential in the control cir-
cuits.
Pos. QS (bottom), Cross-wire short proof: QS-LED on
• Suitable for 2-channel applications without outputs connected to potential in the control circuits
6.4. Configuration
6.4.1. Start configuration
External reset button (monitored start)
• The external reset button is integrated in the feedback circuit in
series.
• The safety-monitoring module is activated by the reset (after
release) of the reset button (= detection of the trailing edge).
• Faults in the reset button, e.g. welded contacts or manipulations
which could lead to an inadvertent restart, are detected in this
configuration and will result in an inhibition of the operation.
R
Reset Button
X2
S12
K
A
J
K
B
Automatic start
• The programming to automatic start can be realized by connec-
ting the feedback loop to terminals S12-X3.
• If the feedback loop is not needed, it is to be replaced with a
bridge.
•
Caution: Not admitted without additional measure due to the
risk of gaining access by stepping behind!
• When the SR4B3B01S safety-monitoring module is used with
the operating mode „Automatic start“, an automatic restart after
a shutdown in case of emergency must be prevented by the
upstream control to EN 60204-1 paragraph 9.2.5.4.2.
X3
S12
K
A
K
B
