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28
EN
6.4.2. Sensor configuration
Dual-channel control of a safety-related electronic (micro processor-based) safety guard with p-type
transistor outputs e.g. AOPD‘s to EN IEC 61496
• The control system recognizes wire breakage and earth faults in
the monitoring circuit.
• Cross-wire shorts between the control circuits are usually detected
by the safety guards. The safety-monitoring module therefore is
not equipped with a cross-wire short detection here.
• If cross-wire shorts in the control circuits are detected by the safety
guard:
control category 4 – PL e to DIN EN ISO 13 849-1 possible.
S12
OSSD1
S22
OSSD2
QS
nQS
Single-channel emergency stop circuit with command devices to DIN EN ISO 13850 (EN 418) and
EN 60947-5-5
• The control system recognizes wire breakage and earth faults in
the monitoring circuit.
• The function without cross-wire short monitoring is programmed
by means of the switch (switch position = nQS) underneath the
front cover.
• Control category 1 – PL c to DIN EN ISO 13849-1 possible, when
tested to DIN EN ISO 13849-1, paragraph 6.5.2.
S12
S11
S22
S12
QS
nQS
Dual-channel emergency stop circuit with command devices to DIN EN ISO 13850 (EN 418) and
EN 60947-5-5
• The control system recognizes wire breakage and earth faults in
the monitoring circuit.
• Cross-wire shorts between the control circuits are not detected.
• The function without cross-wire short monitoring is programmed
by means of the switch (switch position = nQS) underneath the
front cover.
• Control category 4 – PL e to DIN EN ISO 13849-1 possible (with
protective wiring).
S12
S11
S22
S21
QS
nQS
Dual-channel emergency stop circuit with command devices to DIN EN ISO 13850 (EN 418) and
EN 60947-5-5
• The control system recognizes wire breakage and earth faults in
the monitoring circuit.
• Cross-wire shorts between the control circuits are detected.
• The cross-wire short monitoring function is programmed by means
of the switch (switch position = QS) underneath the front cover.
• Control category 4 – PL „e“ to DIN EN ISO 13849-1 possible
S12
S11
S22
S21
QS
nQS