Abbreviation Meaning
PCB Printed Circuit Board
PID Proportional Integral Derivative
PLC Programmable Logic Controller
PLL Phase Locked Loop
pot Potentiometer
pp Peak-to-peak
ppm Parts per Million
PPR Pulses per Revolution
PQM Power Quality Meter
ProToPS
TM
Process Tolerant Protection Strategy
PSDBP Power Spectral Density Break Point
PSI Pounds Per Square Inch
PSIG Pounds Per Square Inch Gauge
PSID Pounds Per Square Inch Dierential
pt Point
PT Potential Transformer
PWM Pulse Width Modulation
Q1,Q2,Q3,Q4 Output Transistor Designations
rad Radians
RAM Random Access Memory
ref Reference
rev Reverse, Revolution(S)
RFI Radio Frequency Interference
RLBK Rollback
rms Root-mean-squared
RPM Revolutions Per Minute
RTD Resistance Temperature Detector
RTU Remote Terminal Unit
RX Receive (RS232 Communications)
s Second(s)
SCR Silicon Controlled Rectier
sec Second(s)
ser Serial
SIB System Interface Board
SMC Synchronous Motor Control
SOP Sum of Products; System Operating Program
spd Speed
stab Stability
std Standard
sw Switch
T1, T2 Output Terminals TI and T2
TB Terminal Block
TBD To Be Determined
List of abbreviations
C.1 Symbols and Abbreviations
NXGPro+ Control Manual
512 Operating Manual, A5E50491925A
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