Danfoss VLT AutomationDrive FC 301 Programming Manual page 184

Parameter Descriptions
17-80 Homing Function
Select the homing function. The homing function creates a
position reference in the physical machine. The selected homing
function can be activated with a digital input or a fieldbus bit.
Homing is not required when using absolute encoders. All
3 3
homing functions except [2] Home Sync Function require a start
homing signal.
Option:
[2] Home Sync
Function
[3] Analog
Input 53
[4] Analog
Input 54
[10] Forward
with sensor
[11] Reverse
with sensor
[12] Forward
Torque
Limit
182
VLT
Function:
Homing position is synchronized with the
homing sensor according to the setting in
parameter 17-81 Home Sync Function.
Use the value of analog input 53 as the actual
position. The value is scaled according to
parameter 3-06 Minimum Position and
parameter 3-07 Maximum Position.
Same as [3] Analog Input 53, but for analog
input 54.
Perform a search for the homing sensor in
forward direction using the settings in
parameter 17-83 Homing Speed and
parameter 17-84 Homing Torque Limit. When
the frequency 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.
Danfoss A/S © 02/2016 All rights reserved.
®
AutomationDrive FC 301/302
17-80 Homing Function
Select the homing function. The homing function creates a
position reference in the physical machine. The selected homing
function can be activated with a digital input or a fieldbus bit.
Homing is not required when using absolute encoders. All
homing functions except [2] Home Sync Function require a start
homing signal.
Option:
[13] Reverse
Torque
Limit
17-81 Home Sync Function
Select the trigger for the homing synchronization function. Only
active when [2] Home Sync Function is selected in
parameter 17-80 Homing Function. The homing synchronization
function sets the actual position to the value of
parameter 17-82 Home Position:
•
Index 0 if the homing sensor is approached in the
forward direction.
•
Index 1 if the homing sensor is approached in the
reverse direction.
Option:
[0]
*
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Function:
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.
Function:
1st time after After power-up, the first
power detection of the homing sensor
triggers the function.
1st t. aft.pow. After power-up, the first
forward detection of the homing sensor
in the forward direction triggers
the function.
1st t. aft.pow. After power-up, the first
reverse detection of the homing sensor
in the reverse direction triggers
the function.
1st time after start After start, the first detection of
the homing sensor triggers the
function.
1st t. aft.str. After start, the first detection of
forward the homing sensor in the
forward direction triggers the
function.
1st t. aft.str. After start, the first detection of
reverse the homing sensor in the reverse
direction triggers the function.
Every time Every detection of the homing
sensor triggers the function.
Every time Every detection of the homing
forward sensor in the forward direction
triggers the function.
MG33ML02