Operating instructions

14-41 AEO Minimum Magnetisation
Range: Function:
Application
dependent
*
[40 - 75
%]
Enter the minimum allowable magnet-
isation for AEO. Selection of a low
value reduces energy loss in the
motor, but can also reduce resistance
to sudden load changes.
14-42 Minimum AEO Frequency
Range: Function:
10 Hz * [5 - 40 Hz] Enter the minimum frequency at which the
Automatic Energy Optimisation (AEO) is to be
active.
14-43 Motor Cosphi
Range: Function:
Application
dependent
*
[0.40 -
0.95 ]
The Cos(phi) setpoint is automatically
set for optimum AEO performance
during AMA. This parameter should
normally not be altered. However in
some situations it may be necessary to
enter a new value to fine-tune.
3.14.7 14-5* Environment
These parameters help the frequency converter to operate
under special environmental conditions.
14-50 RFI Filter
Option: Function:
[0] 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.
[1]
* On Select On [1] to ensure that the frequency converter
complies with EMC standards.
14-51 DC Link Compensation
Option: Function:
[0] Off Disables DC Link Compensation.
[1]
* On Enables DC Link Compensation.
14-52 Fan Control
Option: Function:
Select the minimum speed of the main fan.
[0]
* Auto Select Auto [0] to run the fan only when the
internal temperature of the frequency converter is
in the range +35°C to approximately +55°C. The
fan will run at low speed at +35°C and at full
speed at approximately +55°C.
[1] On 50%
[2] On 75%
[3] On 100%
14-53 Fan Monitor
Option: Function:
Select which reaction the frequency converter
should take in case a fan fault is detected.
[0] Disabled
[1]
* Warning
[2] Trip
14-55 Output Filter
Option: Function:
[0] * No Filter
[2] Sine Wave Filter Fixed
14-59 Actual Number of Inverter Units
Range: Function:
Application
dependent
*
[Application
dependant]
Sets the actual number of
operating inverter units.
3.14.8 14-6* Auto Derate
This group contains parameters for derating the frequency
converter in case of high temperature.
14-60 Function at Over Temperature
Option: Function:
If either heatsink or control card temperature
exceeds a factory-programmed temperature limit, a
warning will be activated. If the temperature increa-
ses further, select whether the frequency converter
should trip (trip locked) or derate the output current.
[0]
* Trip The frequency converter will trip (trip locked) and
generate an alarm. Power must be cycled to reset the
alarm, but will not allow restart of the motor until the
heat sink temperature has dropped below the alarm
limit.
[1] Derate If the critical temperature is exceeded the output
current will be reduced until the allowable tempera-
ture has been reached.
Parameter Description
VLT
®
HVAC Drive Programming Guide
106 MG.11.CA.02 - VLT
®
is a registered Danfoss trademark
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