How To Check The Motor Connection; How To Test The Incremental Encoders - Danfoss VLT 5000 Operating Instructions Manual

Parameter 721
Parameter 722
Parameter 723
Parameter 724
Parameter 725
Parameter 726
Parameter 727

How to check the motor connection

When you have programmed the above parameters you check the motor connection as follows:
1. Remove all signals to terminals 16-33 and I1-I8). Only input 27 must be connected and
closed.
2. Select "Local" function in parameter 002. – VLT 5000 stops (display flashing)
3. Set the frequency for a low value, for example 3 Hz in parameter 003.
4. Press the [START] button on the VLT 5000 control panel and then the [STOP/Reset]
button watching the direction of the motor. If the motor rotates in the wrong direction
then exchange the motor phases.

How to test the incremental encoders

When you have tested the motor speed direction you test the incremental encoder connection
as follows:
1. Remove all signals to terminals 16-33 and I1-I8. Only input 27 must be connected and
closed
2. Press the [DISPLAY/STATUS] button on the VLT 5000 control panel. Now the following
values appear in the upper line of the display: slave position, master position and track
error.
3. Rotate the slave drive motor shaft manually in the allowed direction. Now the display
shows an ascending count of the slave position. If the count is descending, exchange
the slave encoder track A by B and A/ by B/. If there is no counting in the display then
check the wiring of the encoder.
Follow the same procedure when you test the master encoder. Note: To be right the count must
be ascending here.
64
Synchronizing controller
Slave marker type: As external marker signals are used, you can set the type
of edge triggering of the external marker signal; "2" for a positive edge, "3" for
a negative edge.
Slave marker interval: Record the interval between two marker signals of the
slave. Input of the interval is in quad counts. If the interval is not known, it can
also be determined during the test run.
Master marker type: As external marker signals are used, you can set the type
of edge triggering of the external marker signal here; "2" for a positive edge,
"3" for a negative edge.
Master marker interval: Record the interval between two marker signals of the
master. Input of the interval is in quad counts. If the interval is not known, it
can also be determined during the test run.
Test run speed: Record the speed at which you want to carry out the
optimization run. Record the speed as a percentage of the speed in Parameter
716.
Test run acceleration: Record the acceleration for the test run in percent of the
minimum acceleration time. 100% represents the minimum acceleration, 50%
is half as fast as minimum acceleration; the ramp time is thus twice as long.
Test run distance: Record the distance (quad counts) for the drive to travel
during optimization.
MG.10.N4.02 - VLT is a registered Danfoss trademark