Danfoss VLT AutomationDrive FC 301 Programming Manual page 266

Parameter Descriptions
17-80 Homing Function
Option:
3 3
[11] Reverse with
Sensor
[12] Forward
Torque Limit
[13] Reverse
Torque Limit
264
®
VLT AutomationDrive FC 301/302
Function:
converter detects the homing
sensor input (configured in
parameter group 5-1* Digital Inputs),
it sets the actual position to the
value of parameter 17-82 Home
Position, index 0. The frequency
converter then switches to the
positioning mode with a target
defined in parameter 17-82 Home
Position, index 0 + index 1. If
reversing is required for going to
the target position, set
parameter 4-10 Motor Speed
Direction to [2] Both directions.
Same as [10] Forward with sensor,
but with the search in the reverse
direction. Set parameter 4-10 Motor
Speed Direction to [1] Counter
clockwise or [2] Both directions.
With this option selected, the
frequency converter does the
following:
1. Runs forward with the set
homing speed
(parameter 17-83 Homing
Speed).
2. When the torque reaches
the limit set in
parameter 17-84 Homing
Torque Limit, and the
speed is lower than the
value in parameter 3-05 On
Reference Window, the
actual position is set to
the value of
parameter 17-82 Home
Position, index 0.
3. The frequency converter
positions to the target
defined in
parameter 17-82 Home
Position, index 0 + index 1.
Only available in flux closed loop.
See also parameter 17-85 Homing
Timout.
Same as [12] Forward Torque Limit
but in reverse direction. Set
parameter 4-10 Motor Speed
Direction to [1] Counter clockwise or
[2] Both directions. Only available in
flux closed loop.
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17-80 Homing Function
Option: Function:
[14] Direction with Same as [9] Direction with Sensor
Z Pulse but with encoder zero pulse as
home sensor.
[15] Forward with Same as [10] Forward with Sensor
Z Pulse but with encoder zero pulse as
home sensor.
[16] Reverse with Z Same as [11] Forward with Sensor
Pulse but with encoder zero pulse as
home sensor.
[17] Direction with Same as [9] Direction with Sensor
S & Z but moving to encoder zero pulse
after finding the home sensor.
[18] Forward with Same as [10] Forward with Sensor
S & Z but moving to encoder zero pulse
after finding the home sensor.
[19] Reverse with S Same as [11] Reverse with Sensor
& Z but moving to encoder zero pulse
after finding the home sensor.
[20] Fwd. II with When on the correct side of the
Sensor home sensor, performs a search for
home sensor in forward direction
using the settings in
parameter 17-83 Homing Speed, and
then reverses with 10% of Homing
Speed when home sensor is
detected.
The falling edge of home sensor
signal is set to the value defined in
parameter 17-82 Home Position,
index 0.
When on the wrong side of the
home sensor, the positive end limit
switch is reached without detecting
the home sensor, the frequency
converter reverses until home
sensor is passed.
After the home sensor is detected,
the search for home sensor is
performed in forward direction, as
described.
[21] Rev. II with When on the correct side of the
Sensor home sensor, performs a search for
home sensor in the reverse
direction using the settings in
parameter 17-83 Homing Speed, and
then moves forward with 10% of
Homing Speed when home sensor
is detected.
The falling edge of home sensor
signal is set to the value defined in
parameter 17-82 Home Position,
index 0.
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