How To Programme Synchronisation - Danfoss MCO 350 Operating Instructions Manual

Syncronising Controller MCO 350 Operating
Instructions
If the interval between two marker signals at the slave is not known, this interval can now be
measured. To do this, the contact at the Slave marker search input (I8) is closed. The slave drive
now rotates at the set test run speed. With each master signal, the interval can be read off in
Parameter 3318. If the marker search is stopped by opening the Slave marker search contact (I8),
an average of all the marker intervals is taken, and this is entered as the value in Parameter 3318.
Similarly, the intervals between the marker signals of the master drive are measured by means
of the Master marker search input (I7). To do this, it is necessary to start the master. The intervals
are continuously displayed in Parameter 3317. After opening the Master marker search contact
(I7), the calculated average of all the measurements is again entered as the final result in Pa-
rameter 3317.
The settings are automatically saved.

4.9.6. How to Programme Synchronisation

Change the value of parameter 33-80 to "2". This will start the synchronisation application pro-
gram.
Use the following parameters to programme the synchronisation:
Parameter No. 19-01
Type of operation: Record "2" or "5" for marker synchronisation.
Parameter No. 33-23
Marker synchronisation behaviour: Specify here how the slave drive is to react while synchronising
to the master marker. "0" means the last marker pulse of the master - the slave synchronises to
the last master marker pulse already registered - it catches up. "1" means the next master marker
pulse - the slave waits for the next master marker and synchronises to it - the slave slows down.
"2" means that the slave uses the nearest master marker - it decides for itself whether to catch
up or slow down.
Parameter No. 33-13
Accuracy: Record a value (quadcounts) for a tolerance within which the slave position may deviate
from the position of the master.
Parameter No. 33-24
Marker quantity Fault: Inaccuracy: Record the number of market signals to generate a Fault signal.
Parameter No. 33-25
Marker quantity Ready: Accuracy: Record the number of marker signals to generate a Ready
signal.
Parameter No. 19-05
Gear ratio No.: Record the number of the gear ratio that is to be displayed in Parameters 1906 to
1910. First set the number of the gear ratio, then in Parameters 1906 to 1910 the necessary values
for this gear ratio. The next gear ratio is then selected in Parameter 1905 and the same procedure
is repeated.
Parameter No. 19-06
Gear ratio numerator: Record the numerator value for the gear ratio. That is the encoder pulses
of the slave drive. To make fine adjustment possible by means of inputs 32 and 33 a ratio of for
example 7:16 must be programmed as 7000:16000.
®
MG.33.Q1.02 - VLT is a registered Danfoss trademark
4. Synchronisation
4
77