4
Operating instructions
Safety-monitoring module
SRB303SQP-SS
EN
6. Wiring examples
6.1 Wiring example: Function SQP (External reset button)
Dual-channel control, shown for a safety edge and an external
master reset button
J
.
• The safety-monitoring module is activated by the reset (after release)
of the reset button (= detection of the trailing edge). Faults in the reset
button, e.g. welded contacts or manipulations which could lead to an
inadvertent restart, are detected in this configuration and will result in
an inhibition of the operation.
• Relay outputs: Suitable for 2-channel control, for increase in capacity
or number of contacts by means of contactors or relays with positive-
guided contacts.
• The control system recognises wire-breakage, earth faults and cross-
wire shorts in the monitoring circuit.
•
S
= Feedback circuit
Signalling outputs must not be used in safety circuits.
A1
A2
13
14
41
42
23
24
33
34
b)
3
51
52
X3
54
PE
S2
S2
S1
5
4
6
a)
c)
4
K1
K2
K3
K3
K2
K1
3
K
A
K
A
K
A
K
B
K
B
K
B
N
L1
6
5
S
J
Key
a) Safety inputs
b) Power
c) Processing
6.2 Wiring example: Function SS (Automatic start)
Dual-channel control, shown for a safety edge
• The safety relay module is activated automatically when the feedback
circuit is closed.
• Relay outputs: Suitable for 2-channel control, for increase in capacity
or number of contacts by means of contactors or relays with positive-
guided contacts.
• The control system recognises wire-breakage, earth faults and cross-
wire shorts in the monitoring circuit.
•
S
= Feedback circuit
Signalling outputs must not be used in safety circuits.
A1
A2
13
14
41
42
23
24
33
34
b)
3
51
52
X4
54
PE
S2
S2
S1
5
4
6
a)
c)
4
K1
K2
K3
K3
K2
K1
3
K
A
K
A
K
A
K
B
K
B
K
B
N
L1
6
5
S
Key
a) Safety inputs
b) Power
c) Processing
6.3 Sensor configuration
Connection of a safety edge
• This control detects wire breakage, earth leakage and cross faults in
the drive circuits.
• Category 3 – PL e to ISO 13849-1 possible.
3
5
4
6
a)
4
3
6
5
Key
a) Safety edge
Connection of multiple safety edges
• This control detects wire breakage, earth leakage and cross faults in
the drive circuits.
• Category 3 – PL e to ISO 13849-1 possible.
3
5
4
6
a)
4
3
6
5
a)
4
3
6
5
Key
a) Safety edge
