Danfoss MCO 305 Design Manual page 42

MCO 305 Design Guide
How to Edit a curve for the Slave Synchronization
1. Set the FC 300 with the required parameters and save these parameters with Parameters
with the extension "CNF".
2. This CNF file must be open in the CAM-Editor.
3. Determine the gearing factor of the master in MU units.
Gearing factor = 5/1
Encoder resolution (Incremental encoder) = 500
One revolution of the roller is 360 degrees. We are going to work with a resolution of 1/10 degrees.
This means that we are dividing one revolution of the roller into 3600 work units:
Scaling factor = 3600
Gearing Factor Encoder
Scaling Factor
Enter these whole number values in the index card
Par. 33-10 Syncfactor Master
Par. 33-11 Syncfactor Slave
4. Enter the gearing factor of the slave in UU units:
The input should be possible in 1/10 mm resolution.
The drive is connected with the conveyor belt by means of a gearing of 25:11; i.e. the motor makes 25,
the drive pulley 11 revolutions.
Gearing factor = 25/11
Incremental encoder directly on the master drive; encoder resolution = 4096
The drive pulley has 20 teeth/revolution, 2 teeth correspond to 10 mm, thus 1 revolution corresponds
to = 100 mm conveyor belt feed or 1000/10 mm.
Thus, the scaling factor is 1000
Gearing Factor Encoder
Scaling Factor
Enter these values in the index card
Par. 32-12 User Unit Numerator
Par. 32-11 User Unit Denominator
5. Determine a whole number factor for the intervals in the index card
are on the interpolation points.
A complete cycle length of the master is 360 degrees; this corresponds to 3600 MU.
For a master cycle length of 3600, the
of 27.7 ms. Set these two values using the "Set" button in the Curve Data index card.
6. Define Fix points for the roller (slave) and
the conveyor belt (master). The function
Snap on Grid should be activated.
7. Master and slave must run synchronously with
the same velocity between the master posi-
tions 1200 to 2400. For this, you need to have
a straight line that is determined with two tan-
gent points. Double-click in the column
for the fixpoint at position 2400.
42
__ Functions and Examples __
Resolution 4
qc 1 MU
= 25
= 9
Resolution 4
qc 1 UU
Encoder:
= 2048
= 55
Number of Intervals = 36 produces a reasonable interval time
Type
®
MG.33.L4.02 – VLT is a registered Danfoss trademark
Synchronization:
Curve Data so that the Fix points
Save to file