NOTE!
It is important to set motor par. 1-2* Motor Data correctly, since these form part of the AMA algorithm. An AMA must be performed
to achieve optimum dynamic motor performance. It may take up to 10 min., depending on the motor power rating.
NOTE!
Avoid generating external torque during AMA
NOTE!
If one of the settings in par. 1-2* Motor Data is changed, par. 1-30
Stator Resistance (Rs)
to par. 1-39
Motor Poles
, the advanced
motor parameters, will return to the default setting.
This parameter cannot be adjusted while the motor is running.
NOTE!
Full AMA should be run without filter only while reduced AMA should be run with filter.
See section
Automatic Motor Adaptation
- application example.
1-71 Start Delay
Range:
Function:
0.0 s*
[0.0 - 120.0 s]
The function selected in par.1-80
is active in the delay period.
Enter the time delay required before commencing acceleration.
1-73 Flying Start
Option:
Function:
This function makes it possible to catch a motor that is spinning freely due to a line drop-out.
has no function.
Search direction for flying start is linked to the setting in par.4-10
Clockwise
[0]: Flying start search in clockwise direction. If not successful, a DC brake is carried out.
Both Directions
[2]: The flying start will first make a search in the direction determined by the last
reference (direction). If unable to find the speed, it will search in the other direction. If not suc-
cessful, a DC brake will be activated in the time set in par. 2-02
DC Braking Time
. Start will then
take place from 0 Hz.
[0] *
Disabled
Select
Disable
[0] if this function is not required
[1]
Enabled
Select
Enable
[1] to enable the adjustable frequency drive to “catch” and control a spinning motor.
1-80 Function at Stop
Option:
Function:
Select the adjustable frequency drive function after a stop command or after the speed is ramped
down to the settings in par. 1-81
Min Speed for Function at Stop [RPM]
.
[0] *
Coast
Leaves motor in free mode.
[1]
DC Hold/Motor Preheat
Energizes motor with a DC holding current (see par.2-00
).
VLT
®
HVAC Drive Instruction Manual
6 How to program the adjustable frequency
drive
MG.11.A9.22 - VLT
®
is a registered Danfoss trademark
6-23
6
Содержание VLT
Страница 8: ...1 Safety VLT HVAC Drive Instruction Manual 1 6 MG 11 A9 22 VLT is a registered Danfoss trademark 1...
Страница 152: ...7 Troubleshooting VLT HVAC Drive Instruction Manual 7 8 MG 11 A9 22 VLT is a registered Danfoss trademark 7...
Страница 174: ...8 Specifications VLT HVAC Drive Instruction Manual 8 22 MG 11 A9 22 VLT is a registered Danfoss trademark 8...