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8
Operating instructions
Safety-monitoring module
SRB-E-402ST
EN
7.5 Sensor configuration
Single channel signal processing
Safety function 1
Safety function 2
+24
VDC
S12 S22
S12 S22
S11 S21
+24
VDC
S32 S42
S32 S42
S31 S41
Rotary knob
position
Function
4
Reset button (detection of the trailing edge)
10
Reset without monitoring / autostart
Dual channel signal processing NC / NC
With cross-wire monitoring
(Cat. 4 - PL e to DIN EN ISO 13849-1 possible)
Safety function 1
Safety function 2
S12 S22
S11 S21
S12 S22
S11 S21
S32 S42
S31 S41
S32 S42
S31 S41
Rotary knob
position
Cross-wire
monitoring
Synchronisation
1
Yes
Yes
2
Yes
No
7
Yes
Yes
8
Yes
No
Without cross-wire monitoring
(Cat. 4 - PL e to DIN EN ISO 13849-1 only possible with protective wiring)
Safety function 1
S12 S22
S11 S21
S12 S22
S11 S21
+24
VDC
S12 S22
S12
+24V
S22
+24V
Safety function 2
S32 S42
S31 S41
S32 S42
S31 S41
+24
VDC
S12 S22
S32
+24V
S42
+24V
Rotary knob
position
Cross-wire
monitoring
Synchronisation
3
No
Yes
4
No
No
9
No
Yes
10
No
No
Dual channel signal processing NC / NO
(Cat. 4 - PL e to DIN EN ISO 13849-1 possible)
Safety function 1
S12 S22
S11 S21
S12 S22
S11 S21
+24
VDC
S12 S22
Safety function 2
S32 S42
S31 S41
S32 S42
S31 S41
+24
VDC
S12 S22
Rotary knob
position
Function
5
Reset button (detection of the trailing edge)
6
Reset without monitoring / autostart
Two-hand control type IIIC safety function 2
(Only rotary mode switch 2)
• Malfunctions of every contact as well as earth leakages and cross-
wire shorts are detected.
• The feedback circuit (H2) is integrated as shown. The safety-technical
function of external positive-guided contactors is monitored by a
series-wiring of the NC contacts with the input X7. In idle state,
this circuit must be closed.
• If the feedback circuit is not required, establish a bridge.
S42
S31
S32 X5
S41
X4 X7
S31/S21
A
B
S
S42
+24
VDC
S32 X5
+24
VDC
X4 X7
+24
VDC
A
B
S
Rotary knob
position
Function
11
Function two-hand control type IIIC
Two-hand control type IIIA safety function 2
(Only rotary mode switch 2)
• Malfunctions in the button contact as well as short circuit to earth are
detected.
• The feedback circuit (H2) is integrated as shown. The safety-technical
function of external positive-guided contactors is monitored by a
series-wiring of the NC contacts with the input X5. In idle state,
this circuit must be closed.
• If the feedback circuit is not required, establish a bridge.
• Safety outputs Q1 / Q2 can be switched off during normal operation
via safety input X7. If this function is not required, input X7 must be
connected to + 24 VDC