6
Operating instructions
Safety-monitoring module
SRB 220XV2 V.2
EN
8.3 Sensor configuration
Dual-channel control of a safety-related electronic (microprocessor-
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.
• The safety-monitoring module therefore is not equipped with a cross-
wire short detection here. 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
- 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 le akage in the control circuits are detected.
• Control category: 2 to EN 954-1
• Category 2 – 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
• Category 4 – PL e to DIN EN ISO 13849-1 possible
(with protective wiring)
S12
+24V
S32
+24V
S22
S21
S12
S11
S32
S31
S22
S21
S12
S11
S32
S11
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 le akage 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 (see 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
• Category 4 – PL e to DIN EN ISO 13849-1 possible
(with protective wiring)
S32
S31
S22
S21
S12
S11
S12
S11
S32
S31
S22
S21
S12
S11
S32
S11
S22
S21
Fig. 13
Fig. 14
Fig. 15
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (see 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 13849-1 possible
Monitored dual-channel safety guard: dual-channel safety guard
monitoring to EN 1088 with at least one positive-break position
switch and automatic start (Fig. 17)
• This control system recognises wire breakage and earth faults in the
guard monitoring circuits.
• Cross-wire shorts between the guard monitoring circuits are detected.
• A time of approx. 500 ms is tolerated between the opening of the
contacts S13-S14 and the closing of S21-S22 and S31-S32.
• Category 4 – PL e to DIN EN 13849-1 possible
S32
S31
S22
S21
S12
S11
S22
S21
S32
S31
S14
S13
S12
S11
Fig. 16
Fig. 17
