Danfoss VLT FC 103, Design Manual

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1.4 Abbreviations, Symbols and
Conventions
60
°
AVM 60
°
asynchronous vector modulation
A Ampere/AMP
AC Alternating current
AD Air discharge
AEO Automatic energy optimisation
AI Analog input
AMA Automatic motor adaptation
AWG American wire gauge
°
C
Degrees celsius
CD Constant discharge
CDM Complete drive module: the frequency converter,
feeding section and auxiliaries
CM Common mode
CT Constant torque
DC Direct current
DI Digital input
DM Differential mode
D-TYPE Drive dependent
EMC Electromagnetic compatibility
EMF Electromotive force
ETR Electronic thermal relay
f
JOG
Motor frequency when jog function is activated.
f
M
Motor frequency
f
MAX
Maximum output frequency, the frequency
converter applies on its output.
f
MIN
Minimum motor frequency from the frequency
converter
f
M,N
Nominal motor frequency
FC Frequency converter
g Gramme
Hiperface
®
Hiperface
®
is a registered trademark by Stegmann
HO High overload
hp Horse power
HTL HTL encoder (10–30 V) pulses - High-voltage
transistor logic
Hz Hertz
I
INV
Rated inverter output current
I
LIM
Current limit
I
M,N
Nominal motor current
I
VLT,MAX
Maximum output current
I
VLT,N
Rated output current supplied by the frequency
converter
kHz Kilohertz
LCP Local control panel
lsb Least significant bit
m Meter
mA Milliampere
MCM Mille circular mil
MCT Motion control tool
mH Inductance in milli Henry
mm Millimeter
ms Millisecond
msb Most significant bit
η
VLT
Efficiency of the frequency converter defined as
ratio between power output and power input.
nF Capacitance in nano Farad
NLCP Numerical local control panel
Nm Newton meter
NO Normal overload
n
s
Synchronous motor speed
Online/
Offline
Parameters Changes to online parameters are activated
immediately after the data value is changed.
P
br,cont.
Rated power of the brake resistor (average power
during continuous braking).
PCB Printed circuit board
PCD Process data
PDS Power drive system: a CDM and a motor
PELV Protective extra low voltage
P
m
Frequency converter nominal output power as
high overload (HO).
P
M,N
Nominal motor power
PM motor Permanent magnet motor
Process PID PID (Proportional Integrated Differential) regulator
that maintains the speed, pressure, temperature,
and so on.
R
br,nom
Nominal resistor value that ensures a brake power
on the motor shaft of 150/160% for 1 minute
RCD Residual current device
Regen Regenerative terminals
R
min
Minimum permissible brake resistor value by
frequency converter
RMS Root mean square
RPM Revolutions per minute
R
rec
Recommended brake resistor resistance of
Danfoss brake resistors
s Second
SFAVM Stator flux-oriented asynchronous vector
modulation
STW Status word
SMPS Switch mode power supply
THD Total harmonic distortion
T
LIM
Torque limit
TTL TTL encoder (5 V) pulses - transistor transistor
logic
U
M,N
Nominal motor voltage
V Volts
VT Variable torque
VVC
+
Voltage vector control plus
Table 1.1 Abbreviations
Introduction
VLT
®
Refrigeration Drive FC 103
8 Danfoss A/S © 08/2015 All rights reserved. MG16G202
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