1.4
Abbreviations
The following terms and abbreviations are used in the user documentation for XDUO
2500 Mixer :
Definition
Term/Abbreviation
aseptic connection device
ACD
controlled variable
CV
The output from the PID controller, or a manually set value
that controls the process variable.
controlled variable high limit
CVHL
controlled variable low limit
CVLL
deadband
DB
The deadband is a defined range of process variable, where
the PID controller does not change the corresponding
controlled variable.
human-machine interface
HMI
Input/Output Cabinet
I/O Cabinet
Open Platform Communications
OPC
proportional integral derivative
PID
A PID controller tries to minimize the difference between
a measured PV and a defined SP. The PID controller calcu-
lates the control signal that controls the process toward
the SP.
programmable logic controller
PLC
process variable
PV
The actual measured value of the parameter.
revolutions per minute
rpm
resistance temperature detector
RTD
Secure Digital card
SD card
setpoint
SP
The process target value defined by a user or the system,
that the PID controller tries to reach by adjusting the pro-
cess control outputs.
Xcellerex XDUO 2500 Mixer Operating Instructions 29146667 AH
15
1 Introduction
1.4 Abbreviations
