
Translation of the original instructions
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– Before working on the electrics: switch off the voltage supply.
Risk of injury due to electric shock.
• For the electric power supply, use only PELV circuits that ensure a reliable
electric disconnection from the mains network.
• Observe IEC60204-1/EN60204-1.
This product is intended for sensing the position of magnets (e.g. the piston posi-
tion) in Festo products. The device is intended for use in an industrial environ-
2.2.1 Area of application and approval
In combination with the UL inspection mark on the product, the information in this
section must also be observed in order to comply with the certification conditions
of Underwriters Laboratories Inc. (UL) for USA and Canada.
Product category code NRKH, NRKH7
Considered standards UL 60947-1, CAN/CSA C22.2 No. 60947-1
UL 60947-5-2, CAN/CSA C22.2 No. 60947-5-2
Industrial Control Equipment
Only for connection to a NEC/CEC Class 2 supply.
SDBT-BSW-…-PU-…-M12 SDBT-BSW-…-PU-…-LE
SDBT-BSW-…-NU-…-M12 SDBT-BSW-…-NU-…-LE
4 Mechanical installation
Fig. 1 Mechanical installation
If the SDBT-BSW-...-PU or SDBT-BSW-...-NU is aligned at a right angle to the weld-
ing electrode or cable, it can result in maloperations in a limited range (applica-
Fig. 2 Operating conditions
– Adjust the distance between the proximity sensor and the source of malfunc-
– Adjust the angle between the proximity sensor and the source of malfunction
– Adjust the strength of the welding current.
– On DW/DWA/DWB cylinders: mount sensor in a different position.
Operating voltage range [VDC] 10…30
Ambient temperature [°C] –25…+80
NEMA enclosure type number
6.2 Technical data, general
Operating voltage range [VDC] 10…30
Max. output current [mA] 100 80
Max. switching capacity [W] 2.8 1.9
Frequency of welding process
Frequency of welding process
Ambient temperature [°C] –25…+85
Ambient temperature with flex-
Degree of protection IP65, IP68