Translation of the original instructions
© 2019 all rights reserved to & Co. KGFesto SE
1 Further applicable documents
All available documents for the product www.festo.com/pk.è
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
2.1.1 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 609471, UL 6094752
C22.2 No. 609471, C22.2 No. 6094752
Only use power sources which guarantee reliable electrical isolation of the oper
ating voltage in accordance with IEC/EN 602041. Observe also the general
requirements for PELV power circuits in accordance with IEC/EN 602041. Only for
connection to a NEC/CEC Class 2 supply. The device shall be supplied from an
isolating transformer having a secondary listed fuse rated 1 A.
Open cable end (SDBTMSX...LE)
Green LED: display of sensing
range; only in teachin mode
Yellow LED: switching status dis
The proximity sensor SDBTMSX detects the magnetic field of the piston magnet.
In the sensing range of the proximity switch, a switching point can be pro
grammed. To set a switching point in the sensing range of the proximity sensor,
– Capacitive operating key
Risk of injury due to electric shock.
• For the electrical power supply, use only PELV circuits in accordance with IEC
602041/EN 602041 (Protective ExtraLow Voltage, PELV).
• Observe the general requirements of IEC 602041/EN602041 for PELV cir
• Only use voltage sources that ensure a reliable electric separation from the
mains network in accordance with IEC 602041/EN 602041.
SDBT…PU…LE SDBT…PU…M8
SDBT…NU…LE SDBT…NU…M8
• Mount the proximity sensor in the end position of the piston so that the end
position is in the sensing range of the sensor. If available, the orientation aid
provides the marking of the piston end position on the drive.
Marking of the piston end position
on the drive (if available)
