6
Operating instructions
Safety-monitoring module
SRB 324ST/R V.3
EN
8.3 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 (see Fig. 10)
•
Wire breakage and earth leakage in the control circuits are detected.
•
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.
•
Control category: 3 to EN 954-1
•
If cross-wire shorts in the control circuits are detected by the
safety guard:
– control category 4 to EN 954-1:1997
– control category 4 – PL e to DIN EN ISO 13 849-1 possible.
Single-channel emergency stop circuit with command devices
to DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 11)
•
Wire breakage and earth leakage in the control circuits are detected.
•
Control category: 2 to EN 954-1
•
Category 3 – PL d to DIN EN 13849-1 possible
Dual-channel emergency stop circuit with command devices
to DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 12)
•
Wire breakage and earth leakage in the control circuits are detected.
•
Cross-wire shorts between the control circuits are not detected.
•
Control category: 3 to EN 954-1
•
Control category 4 – PL e to DIN EN 13849-1 possible
(with protective wiring).
S12
+24V
B1
+24V
S22
S21
S12
S11
B1
S12
S22
S21
S12
S11
B1
S31
S22
S21
Fig. 10
Fig. 11
Fig. 12
Dual-channel emergency stop circuit with command devices
to DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 13)
•
Wire breakage and earth leakage in the control circuits are detected.
•
Cross-wire shorts between the control circuits are detected.
•
Control category: 4 to EN 954-1
•
Category 4 – PL "e" to DIN EN ISO 13849-1 possible
Single-channel guard door monitoring circuit with interlocking
devices to EN 1088 (Fig. 14)
•
At least one contact with positive break required
•
Wire breakage and earth leakage in the control circuits are detected.
•
Control category: 2 to EN 954-1
•
Category 2 – PL d to DIN EN ISO 13849-1 possible
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (Fig. 15)
•
With at least one positive-break position switch
•
Wire breakage and earth leakage in the control circuits are detected.
•
Cross-wire shorts between the control circuits are not detected.
•
Control category: 3 to EN 954-1
•
Control category 4 – PL e to DIN EN 13849-1 possible
(with protective wiring).
S12
S11
S22
S21
B1
S31
S12
S11
B1
S12
S22
S21
S12
S11
B1
S31
S22
S21
Fig. 13
Fig. 14
Fig. 15
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (Fig. 16)
•
With at least one positive-break position switch
•
Wire breakage and earth leakage in the control circuits are detected.
•
Cross-wire shorts between the control circuits are detected.
•
Control category: 4 to EN 954-1
•
Category 4 – PL e to DIN EN ISO 13849-1 possible
Dual-channel control of magnetic safety switches to EN 60 947-5-3
(see Fig. 17)
•
Wire breakage and earth leakage in the control circuits are detected.
•
Cross-wire shorts between the control circuits are not detected.
•
Control category: 3 to EN 954-1
•
Category 3 – PL "e" to DIN EN ISO 13849-1 possible
Dual-channel control of magnetic safety switches to EN 60 947-5-3
(see Fig. 18)
•
Wire breakage and earth leakage in the control circuits are detected.
•
Cross-wire shorts between the control circuits are detected.
•
Control category: 3 to EN 954-1
•
Category 3 – PL "e" to DIN EN ISO 13849-1 possible
S12
S11
S22
S21
B1
S31
B1
S31
S12
S11
S22
S21
S22
S21
S12
S11
B1
S31
Fig. 16
Fig. 17
Fig. 18
