5
SRB303SQP-SS
Operating instructions
Safety-monitoring module
EN
6.4 Actuator configuration
Single-channel control with feedback circuit
• Suitable for increase in capacity or number of contacts by means of
contactors or relays with positive-guided contacts.
• If the feedback circuit
is not required, establish a bridge.
•
S
= Feedback circuit
K
A
S
K
A
N
L1
13
14
S2
S1
Dual-channel control with feedback circuit
• Suitable for increase in capacity or number of contacts by means of
contactors or relays with positive-guided contacts.
• If the feedback circuit is not required, establish a bridge.
•
S
= Feedback circuit
K
A
K
B
S
13
14
S2
S1
K
A
K
B
N
L1
7. Set-up and maintenance
7.1 Commissioning
The safety relay module features protection class IP54 for installation in
a switch cabinet.
7.2 Functional testing
The safety function of the safety-monitoring module must be tested.
The following conditions must be previously checked and met:
1. Correct fixing
2. Check the integrity of the cable entry and connections
3. Check the safety-monitoring module's enclosure for damage.
4. Check the electrical function of the connected sensors and their
influence on the safety-monitoring module and the downstream
actuators
7.3 Maintenance
A regular visual inspection and functional test, including the following
steps, is recommended:
1. Check the correct fixing of the safety-monitoring module
2. Check the cable for damages
3. Check electrical function
If a manual functional check is necessary to detect a
possible accumulation of faults, then this must take place
during the intervals noted as follows:
• at least every month for PL e with category 3 or
category 4 (according to ISO 13849-1) or SIL 3 with HFT
(hardware fault tolerance) = 1 (according to IEC 62061);
• at least every 12 months for PL d with category 3
(according to ISO 13849-1) or SIL 2 with HFT (hardware
fault tolerance) = 1 (according to IEC 62061).
Damaged or defective components must be replaced.
8. Disassembly and disposal
8.1 Disassembly
The safety-monitoring module must be disassembled in a de-energised
condition only.
Push up the bottom of the enclosure and hang out slightly tilted
forwards.
8.2 Disposal
The safety-monitoring module must be disposed of in an appropriate
manner in accordance with the national prescriptions and legislations.
