Danfoss FC 100 Series Operating Instructions Manual page 69

How to Programme the Frequ...
0-70 Date and Time
Range:
Application [Application
dependent dependant]
*
0-71 Date Format
Option: Function:
Sets the date format to be used in the LCP.
[0] YYYY-MM-DD
*
[1] DD-MM-YYYY
*
[2] MM/DD/YYYY
0-72 Time Format
Option: Function:
Sets the time format to be used in the LCP.
[0] 24 h
*
[1] 12 h
0-74 DST/Summertime
Option: Function:
Choose how Daylight Saving Time/Summertime
should be handled. For manual DST/Summertime
enter the start date and end date in par. 0-76 DST/
Summertime Start and par. 0-77 DST/Summertime
End.
[0]
Off
*
[2] Manual
0-76 DST/Summertime Start
Range:
Application [Application
dependent dependant]
*
0-77 DST/Summertime End
Range:
Application [Application
dependent dependant]
*
1-00 Configuration Mode
Option: Function:
[0] Open Motor speed is determined by applying a speed
*
Loop reference or by setting desired speed when in
Hand Mode.
Open Loop is also used if the frequency converter
is part of a closed loop control system based on an
®
VLT HVAC Drive Operating Instructions
Function:
Sets the date and time of the
internal clock. The format to be
used is set in par. 0-71 Date
Format and par. 0-72 Time
Format.
Function:
Sets the date and time when
summertime/DST starts. The date
is programmed in the format
selected in par. 0-71 Date
Format.
Function:
Sets the date and time when
summertime/DST ends. The date
is programmed in the format
selected in par. 0-71 Date
Format.
®
MG.11.AD.02 - VLT is a registered Danfoss trademark
1-00 Configuration Mode
Option: Function:
external PID controller providing a speed
reference signal as output.
[3] Closed Motor Speed will be determined by a reference
Loop from the built-in PID controller varying the motor
speed as part of a closed loop control process (e.g.
constant pressure or flow). The PID controller must
be configured in par. 20-** or via the Function
Setups accessed by pressing the [Quick Menus]
button.
NOTE
This parameter cannot be changed when motor is
running.
NOTE
When set for Closed Loop, the commands Reversing and
Start Reversing will not reverse the direction of the
motor.
1-03 Torque Characteristics
Option: Function:
[0] Compres- Compressor [0]: For speed control of screw and
sor torque scroll compressors. Provides a voltage which is
*
optimized for a constant torque load characteris-
tic of the motor in the entire range down to 10
Hz.
[1] Variable Variable Torque [1]: For speed control of centrifu-
torque gal pumps and fans. Also to be used when
controlling more than one motor from the same
frequency converter (e.g. multiple condenser fans
or cooling tower fans). Provides a voltage which
is optimized for a squared torque load character-
istic of the motor.
[2] Auto Auto Energy Optimization Compressor [2]: For
Energy optimum energy efficient speed control of screw
Optim. CT and scroll compressors. Provides a voltage which
is optimized for a constant torque load character-
istic of the motor in the entire range down to
15Hz but in addition the AEO feature will adapt
the voltage exactly to the current load situation,
thereby reducing energy consumption and
audible noise from the motor. To obtain optimal
performance, the motor power factor cos phi
must be set correctly. This value is set in
par. 14-43 Motor Cosphi. The parameter has a
default value which is automatically adjusted
when the motor data is programmed. These
settings will typically ensure optimum motor
voltage but if the motor power factor cos phi
requires tuning, an AMA function can be carried
out using par. 1-29 Automatic Motor Adaptation
(AMA). It is very rarely necessary to adjust the
motor power factor parameter manually.
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