29
Single-channel guard door monitoring circuit with interlocking devices to ISO 14119
• At least one contact with positive break required
• 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 guard door monitoring circuit with interlocking device to ISO 14119
• With at least one positive-break position switch
• 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 guard door monitoring circuit with interlocking device to ISO 14119
• With at least one positive-break position switch
• 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
Dual-channel control of magnetic safety switches according to EN 60947-5-3
• The control system recognizes wire breakage and earth faults in
the monitoring circuit.
• Cross-wire shorts between the monitoring 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 3 – PL “e” to DIN EN ISO 13849-1 possible
S12
S22
S11
S21
QS
nQS