Abbreviation Long form Meaning
NAMUR Standards working group for meas‐
urement and control technology in the
chemicals industry
Association of users in process conductor technology
µC Microcontroller One-Chip computer system
NCS Non-Contacting Sensor Sensor for contactless position detection
NEMA National Electrical Manufacturers As‐
sociation
US standards institution
National Electrical Manufacturers Association
NPT National Pipe Thread Taper Pipe threading for self-sealing threads as per ANSI B.1.20.1
OPOS interface
®
Open Positioner Interface Standard interface for the connection between a positioner and
a pneumatic linear or part-turn actuator
PA Process Automation Process automation
PDM Process Device Manager Siemens communication software / Engineering tool
PROFIBUS Process Field Bus Fieldbus
RSS feed Rich Site Summary Feed Shows changes in regular intervals to web sites you are sub‐
scribed to.
SIA Slit initiator alarm module Option module of the positioner
VDE Verband der Elektrotechnik, Elektro‐
nik und Informationstechnik e. V.
Industrial and professional association
VDI Verein Deutscher Ingenieure e. V. Technical/scientific association
G.2 Abbreviations positioner without basic electronics 6DR5910
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abbreviations >>
Abbreviation Long form Meaning
Exh. Exhaust air
CHx Channel x Channel
GND Ground Grounding
POS Position
QRL
Shield
URef
G.3 Abbreviations for functional safety
Abbreviation Full term in English Meaning
FIT Failure in Time Frequency of failure
Number of faults within 10
9
hours
HFT Hardware Fault Tolerance Hardware fault tolerance:
Capability of a function unit to continue executing a required
function in the presence of faults or deviations.
Abbreviations
G.3 Abbreviations for functional safety
SIPART PS2 with PROFIBUS PA
364 Operating Instructions, 05/2019, A5E00127926-AC
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