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

Parameter 711
Parameter 712
Parameter 713
Parameter 714
Parameter 715
Parameter 716
Parameter 717
Parameter 718
Parameter 720

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.
2. Select "LCP control / open loop "1" in parameter 013. 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 speed 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.
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 forward 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.
Remember to change parameter 002 back to "Remote" and start VLT 5000 by pressing the
[START] button on the control panel.
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Synchronizing controller
Record the type of slave encoder. "0" represents the incremental encoder.
Record the resolution of the slave encoder.
Record the type of master encoder. "0" represents the incremental encoder.
Record the resolution of the master encoder.
Record "1" for clockwise rotation of both master and slave. Record "-1" if the
slave is to run in the opposite direction.
Record maximum RPM measured at the slave encoder.
Minimum ramp: Set the time in Ms for the slave drive to accelerate from
standstill to maximum speed (par 716). This value is important as this setting
highly affects the control accuracy!
Ramp type: Record "0" for linear ramp and "1" for s-ramp. NOTE: S-ramp
requires higher acceleration torque.
Reversing behavior: Record "0" if reversing is allowed, "1" if the slave must
always follow the direction of the master or "2" if reversion is not allowed.
MG.10.N4.02 - VLT is a registered Danfoss trademark