Energy Optimising; Environment - Danfoss VLT HVAC Basic Drive Programming Manual

Parameters
NOTE
Automatic reset will also be active for resetting safe stop
function.
14-21 Automatic Restart Time
Range: Function:
10.0 s [0.0 - 600.0 s] Enter the time interval from trip to start of
*
the automatic reset function. This
parameter is active when 14-20 Reset Mode
is set to Automatic reset [1] - [13].
14-22 Operation Mode
Option: Function:
Select Initialisation[2] to reset all parameter
values to default.
[0] Normal Select Normal operation [0] for normal
*
operation operation of the frequency converter with the
motor in the selected application.
[2] Initialisation Select Initialisation [2] to reset all parameter
values to default settings, except for
15-03 Power Up's, 15-04 Over Temp's and
15-05 Over Volt's. The frequency converter will
reset during the next power-up.
14-22 Operation Mode will also revert to the
default setting Normal operation [0].
14-27 Action At Inverter Fault
Option: Function:
Select how the frequency converter should react at
inverter fault. Action At Inverter Fault
[0] Trip
[1] Warning
*

3.10.4 14-4*Energy Optimising

Parameters for adjusting the energy optimisation level in
both Variable Torque (VT) and Automatic Energy Optimi-
zation (AEO) mode.
Automatic Energy Optimization is only active if 1-03 Torque
Characteristics, is set for Auto Energy Optim. [3].
14-40 VT Level
Range: Function:
90 % [40 - 90 Enter the level of motor magnetisation at low
*
%] speed. Selection of a low value reduces energy
loss in the motor, but also reduces load
capability.
This parameter cannot be adjusted while the
motor is running.
VLT HVAC Basic Drive Programming Guide
14-41 AEO Minimum Magnetisation
Range:
66 %

3.10.5 14-5* Environment

These parameters help the frequency converter to operate
under special environmental conditions.
14-50 RFI Filter
Option:
[0]
[1]
14-51 DC-Link Voltage Compensation
Option:
[0]
[1]
14-52 Fan Control
Option:
[0]
[4]
14-53 Fan Monitor
Option:
[0]
[1]
[2]
14-55 Output Filter
Option:
[0]
[1]
[3]
®
MG.18.B1.02 - VLT is a registered Danfoss trademark
Function:
[40 - 75 %] Enter the minimum allowable magnetisation
*
for AEO. Selection of a low value reduces
energy loss in the motor, but can also reduce
resistance to sudden load changes.
Function:
Off Select Off [0] only if the frequency converter is fed by an
isolated mains source (IT mains).
In this mode, the internal RFI filter capacitors between
chassis and the mains RFI filter circuit are cut-out to
reduce the ground capacity currents.
On Select On [1] to ensure that the frequency converter
*
complies with EMC standards.
Function:
Off Disables DC Link Compensation.
On Enables DC Link Compensation.
*
Function:
Only valid for the following frequency
converters: 380-480V, 30-90kW.
Auto
*
Auto Low Temp Env.
Function:
Select which reaction the frequency converter
should take in case a fan fault is detected. (Only
valid for some drive sizes.)
Disabled
Warning
*
Trip
No Filter
*
Sine-Wave Filter
Sine-Wave Filter with Feedback
Function:
Select wether a output filter
is present.
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