Braun E16x442 - List of Abbreviations

I E16x442 Rev: 00 Page 5 of 73
1.2. List of Abbreviations
Abbreviation
Meaning
altern.
alternative
API
Technical standards of the "American Petroleum Institute"
A5S
BRAUN GmbH Sensor series
AWG/kcmil
Code number according to the "American Wire Gauge" System
approx.
approximately
CCF
Common Cause Failure
CPU
Central Processing Unit
DCavg
Diagnostic Coverage average
DIN
Deutsches Institut für Normung (German Institute for Standardization)
dN/dt
Change of speed per time unit (Acceleration)
EEPROM
Electrically Erasable Programmable Read-Only Memory
EMV
Electro magnetic compatibility
EN
European Norm
F/R
Forward/Reverse (Forward/Backward)
HE
Height units
HFT
Hardware Failure Tolerance
IEC
International Electrotechnical Commission
incl.
inclusive
IPxx
Ingress Protection Number xx according to DIN EN 60529
ISO
International Organization for Standardization
LED
Light Emitting Diode
LOx
Logic Output x
max.
maximum
min.
minimum
MPU
Magnetic Pick Up
MTTFd
Mean Time To Failure dangerous
n
Short term for Speed
NEMAx
National Electrical Manufacturers Association Number x
PFDavg
Probability of Failure on Demand average
PELV
Protective Extra Low Voltage
RAM
Random Access Memory
RPM
Revolutions Per Minute
sec
second
SELV
Safety Extra Low Voltage
SFF
Safe Failure Fraction
SILx
Safety Integrity Level x
SPx
SetPoint x
SPVx
SetPoint Voter x
SP1var
SetPoint 1 variable
TE
Width unit
TMR
Triple Modular Redundant
Tproof
Proof Test Interval
UL/cUL
Acc. US Underwriter Laboratories resp. Canadian Underwriter Laboratories standards
Vdc
Volt direct current
Vpp
Volt peak-to-peak
resp.
respective
to be continued on next page