Operation And Operating Functions - Danfoss MCO 350 Operating Instructions Manual

4. Synchronisation
Slave speed factor: Record the factor by which the slave speed must be multiplied, so that the
desired value is displayed. To calculate the value use the following formula:
F actor
Example:
Resolution 1024 increments, desired display 100 at 15001/min
F actor
4
Parameter No. 19-14
Master speed factor: Record the factor by which the master speed must be multiplied, so that the
desired value is displayed. To calculate the value use the following formula:
F actor
Parameter No. 19-15
Synchronisation error display factor: Record the factor by which the error must be multiplied, so
that the desired value is displayed. To calculate the value use the following formula:
F actor
The settings are automatically saved.

4.7.8. Operation and Operating Functions

After all values have been set as described and the controller has been optimised for the appli-
cation, Parameter 3004 Home function is set to the value of "2". The drive can now be operated
normally.
Home run
As parameter 33-00 is set to "1" and parameter 33-04 is set to "2" homing must be carried out
before each start. To start homing the contact at Terminal 19 is closed. The slave drive then travels
to the home switch and stops there. If the reversing procedure is set to "0", the slave travels back
to the start of the home switch; otherwise, the offset arising from disabling reversing is added to
the fixed offset.
Starting synchronisation
Preferably, the master is first similarly brought into its start position and the slave activated by
means of I1 (SyncStart), then the master is started. This produces optimum synchronisation. The
slave can, of course, also be started by, e.g. a start signal from the master, although in that case
it should be noted that the delay of the start signal can be prolonged by the scan time of e.g. the
PLC. Attention should be paid to the accuracy of the start signal. Hence, it is better to start the
slave drive when the master is in position. The position of the master, plus the value of the fixed
offset, is the synchronisation position to which the slave drive will travel at the maximum permitted
acceleration when started. It may happen here that the slave drive travels faster than the master,
as the slave drive needs to catch up with the master position.
Stopping synchronisation
On opening the SyncStart contact (I1), the slave is stopped at the permitted acceleration. Because
Home force function is set at "2", a new start is only possible after a renewed Home run.
Fine setting of the position
68
N Set x x Slaveencoder
400
=
x Display
60 _
1
x x
1500 400 1024
min
=
x
60 100
N x x Slaveencoder
400
Set
=
x Display
60
N x x Slaveencoder
400
Set
=
x Display
60
MG.33.Q1.02 - VLT
Syncronising Controller MCO 350 Operating
resolution
_
value
I ncr
.
Rev
.
= 102400
resolution
_
value
_
resolution
_
value
_
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