Danfoss Metasys N2 Instruction Manual

NOTICE!
•
For the best adaptation of the adjustable
frequency drive, run AMA on a cold motor
•
AMA cannot be performed while the motor is
running.
NOTICE!
Avoid generating external torque during AMA.
NOTICE!
If one of the settings in parameter group 1-2* Motor
Data is changed, parameter 1-30 Stator Resistance (Rs) to
parameter 1-39 Motor Poles, the advanced motor
parameters, will return to default setting.
This parameter cannot be adjusted while the motor is
running.
NOTICE!
Full AMA should be run without lter only while reduced
AMA should be run with lter.
See section: Application Examples > Automatic Motor
Adaptation in the Design Guide.
1-71 Start Delay
Range: Function:
00 s* [0 - 120
s]
The function selected in
parameter 1-80 Function at Stop 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.
When parameter 1-73 Flying Start is enabled,
parameter 1-71 Start Delay has no function.
Search direction for Flying Start is linked to the
setting in parameter 4-10 Motor Speed Direction.
[0] Clockwise: Flying Start search in clockwise
direction. If not successful, a DC brake is carried
out.
[2] Both Directions: The Flying Start will
rst make a
search in the direction determined by the last
reference (direction). If unable to
nd the speed, it
will search in the other direction. If not successful,
a DC brake will be activated in the time set in
parameter 2-02 DC Braking Time. Start will then take
place from 0 Hz.
1-73 Flying Start
Option: Function:
[0] Disabled
Select [0] Disable if this function is not required
[1] Enabled
Select [1] Enable to enable the adjustable
frequency drive to “catch” and control a spinning
motor.
The parameter is always set to [1] Enable when
parameter 1-10 Motor Construction = [1] PM non-
salient.
Important related parameters:
•
parameter 1-58 Flystart Test Pulses Current
•
parameter 1-59 Flystart Test Pulses
Frequency
•
parameter 1-70 PM Start Mode
•
parameter 2-06 Parking Current
•
parameter 2-07 Parking Time
•
parameter 2-03 DC Brake Cut-in Speed
[RPM]
•
parameter 2-04 DC Brake Cut-in Speed [Hz]
•
parameter 2-06 Parking Current
•
parameter 2-07 Parking Time
The Flystart function used for PM motors is based on an
initial speed estimation. The speed will always be
estimated as the rst thing after an active start signal is
given. Based on the setting of parameter 1-70 PM Start
Mode, the following will happen:
parameter 1-70 PM Start Mode = [0] Rotor Detection:
If the speed estimate comes out as greater than 0 Hz, the
adjustable frequency drive will catch the motor at that
speed and resume normal operation. Otherwise, the
adjustable frequency drive will estimate the rotor position
and start normal operation from there.
parameter 1-70 PM Start Mode = [1] Parking:
If the speed estimate comes out lower than the setting in
parameter 1-59 Flystart Test Pulses Frequency, then the
Parking function will be engaged (see
parameter 2-06 Parking Current and parameter 2-07 Parking
Time). Otherwise, the adjustable frequency drive will catch
the motor at that speed and resume normal operation.
Refer to description of parameter 1-70 PM Start Mode for
recommended settings.
How to Program
VLT
®
HVAC Drive FC 102
88 Danfoss A/S © 08/2014 All rights reserved. MG11F522
66

Danfoss Metasys N2 Specifications

General

Brand	Danfoss
Model	Metasys N2
Category	DC Drives
Language	English