Pepperl+Fuchs H-System Manual page 33

H-System – Isolated Barriers and Termination Boards for HIMA
Technical Specifications
6.1.2 Conformity
General
• Isolated barriers with explosion protection, preferably Ex ia IIC/Class I, Div. 1,
international approvals
• EMV according to
• EN 61326-1
• EN 61326-3-2, only for devices with SIL rating, where the data sheet
• NAMUR NE21
• LEDs according to NAMUR NE44
• Software according to NAMUR NE53
Digital Inputs and Outputs according to NAMUR
The standards references for this interface have changed many times:
• German standard (old): DIN 19234: Electrical distance sensors –
DC interface for distance sensors and switch amplifiers; 1990-06
• European standard (old): EN 50227: Low voltage switch gear and control gear
– control devices and switching elements – proximity switches, DC interface
for proximity sensors and switch amplifiers (NAMUR), 1996-10
• German version (old): DIN EN 50227: Low voltage switch gear – control
devices and switching elements – proximity switches, DC interface for
proximity sensors and switch amplifiers (NAMUR), 1997
• Current designation: EN 60947-5-6: Low voltage switch gear – control
devices and switching elements – proximity switches, DC interface for
proximity sensors and switch amplifiers (NAMUR), 2000
• Current IEC designation: IEC 60947-5-6: Low voltage switch gear and
control gear – part 5-6: Control devices and switching elements – DC interface
for proximity sensors and switch amplifiers (NAMUR), 1999
mentions this standard.
If you operate the device with a DC supply voltage, you must ensure that
the bridging of the 20 ms voltage interruption is realized by the power
supply.
If you operate the device with a DC supply voltage, you must ensure that
the bridging of the 20 ms voltage interruption is realized by the power
supply.
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