VLT
®
8000 AQUA
The control panel is detachable and may, as
an alternative, be installed up to 10 feet away
from the AFD, i.e. in a front panel, by means
of the installation kit option.
LSB:
Least significant bit.
Used in serial communication.
MCM:
Stands for Mille Circular Mil, an American measuring
unit for cable cross-section.
MSB:
Most significant bit.
Used in serial communication.
n
M,N
The rated motor speed (nameplate data).
η
VLT
The efficiency of the AFD is defined as the ratio
between the power output and the power input.
On-line/off-line parameters:
On-line parameters are activated immediately after the
data value is changed. Off-line parameters are not
activated until OK has been entered on the control unit.
PCB: Printed circuit board.
PELV: Protective extra low voltage.
PID:
The PID regulator maintains the desired speed
(pressure, temperature, etc.) by adjusting the output
frequency to match the varying load.
P
M,N
The rated power delivered by the motor
(nameplate data).
Preset reference:
A permanently defined reference, which can be
set from -100% to +100% of the reference range.
There are four preset references, which can be
selected via the digital terminals.
Ref
MAX
The maximum value which the reference
signal may have.
Set in parameter 205
Maximum reference, Ref
MAX
.
Ref
MIN
The smallest value which the reference signal may have.
Set in parameter 204
Minimum reference, Ref
MIN
.
Setup:
There are four Setups, in which it is possible to
save parameter settings. It is possible to change
between the four parameter Setups.
Start-disable command:
A stop command that belongs to group 1 of the
control commands - see this group.
Stop command:
See Control commands.
Thermistor:
A temperature-dependent resistor placed where the
temperature is to be monitored (AFD or motor).
Trip:
A state which occurs in different situations, e.g.
if the AFD is subjected to an overtemperature.
A trip can be cancelled by pressing reset or,
in some cases, automatically.
Trip locked:
A state which occurs in different situations, e.g.
if the AFD is subject to an overtemperature. A
locked trip can be cancelled by removing line power,
then reapplying it and starting the.
U/F:
Voltage to frequency ratio that is supplied to the motor.
U
M
The voltage transmitted to the motor.
U
M
,
The rated motor voltage (nameplate data).
U
VLT, MAX
The maximum output voltage.
VFD:
See AFD.
VT characteristics:
Variable torque characteristics, used for
centrifugal pumps and fans.
MG.80.A7.22 - VLT is a registered Danfoss trademark
6
Rosewood STP ST42 General (Operation and Maintenance Manual - Part 4:
Section 6.3 Manufacturers Manuals 6.3.33 Danfoss VLT Aquadrive 8000) Vendor Manual
QP Id: VM207
Active: 03/09/2013
Page 12 of 208
