Synchronizing controller
MG.10.N4.02 - VLT is a registered Danfoss trademark 57
Parameter 739 Gear ratio denominator: Record the denominator value of the gear ratio. This
value corresponds to the master pulses.
Parameter 742 Fixed Offset: Record a fixed position offset for the selected gear ratio (quad
counts). You use this value to specify the position deviation between slave and
master. During operation you can change the value by means of inputs 32 and
33.
Note: Offset is related to the master position. Offset related to the slave
position can be calculated as follows:
Offset_slave =
739
738*
Paramete
ParameterOffset
Parameter 743 Step time: Record the delay in ms from one frequency change to another (hold
mode) and from one gear ratio numerator factor change to another
(synchronization mode) when there is a signal on terminal 32 or 33.
Parameter 744 Step width: Record a value to specify the position displacement between slave
and master.
Parameter 745 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:
Factor =
valueDisplay
resolutionerSlaveencodN
Set
_*60
_*400*
Example:
Resolution 1024 increments, desired display 100 at 1500
1
/
min
Factor =
=
100*60
1024*400*1500
.Re
.
min
1
v
Incr
102400
Parameter 746 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:
Factor =
valueDisplay
resolutionderMasterencoN
Set
_*60
_*400*
Parameter 747 Synchronization 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:
Factor =
valueDisplay
resolutionerSlaveencodN
Set
_*60
_*400*
Store your data settings by means of Store Input (I4) or by changing Parameter 710 to “1”.