10
Operating instructions
Safety sensor
BNS 33S
EN
4.3 Connection
The BNS 33S-12Z safety sensor is suitable for use in conjunction with
safety-monitoring modules, which are controlled through NO/NC safety
inputs or NC/NC safety inputs.
In these versions, the optional LED is integrated in the S21-S22 circuit.
Connection to safety-monitoring modules with NO / NC inputs:
NO: S13–S14 to the NO input of the safety-monitoring module
(AES safety-monitoring module: terminal S13–S14)
NC: S21–S22 to the NC input S21–S22 of the safety-monitoring
module
(AES safety-monitoring module: terminal S21–S22)
NC: S31 – S32 can be used as signalling contact
Connection to safety-monitoring modules with NC / NC inputs:
NC: S21–S22 to the 1nd NC input of the safety-monitoring module
(AES safety-monitoring module: terminal S11–S12)
NC: S31–S32 to the 2nd NC input of the safety-monitoring module
(AES safety-monitoring module: terminal S21–S22)
NO: S13–S14 can be used as signalling contact
5. Set-up and maintenance
5.1 Functional testing
The safety function of the safety components must be tested. The fol-
lowing conditions must be previously checked and met:
1. Fitting of the sensor and the actuator
2. Fitting and integrity of the power cable
3. The system is free of dirt and soiling (in particular metal chips)
5.2 Maintenance
In the case of correct installation and adequate use, the safety sensor
features maintenance-free functionality.
A regular visual inspection and functional test, including the following
steps, is recommended:
• Check the fitting of the sensor and the actuator
• Remove possible metal chips
• Check the cable for damage.
Damaged or defective components must be replaced.
6. Disassembly and disposal
6.1 Disassembly
The safety switchgear must be disassembled in a de-energised condi-
tion only.
6.2 Disposal
The safety switchgear must be disposed of in an appropriate manner in
accordance with the national prescriptions and legislations.
mrl_bns33s_en.indd 10
27.11.2012 07:37:23