Danfoss VLT 5000 Operating Instructions Manual page 58

Parameter 739
Parameter 742
Parameter 743
Parameter 744
Parameter 745
Parameter 746
Parameter 747
Store your data settings by means of Store Input (I4) or by changing Parameter 710 to "1".
MG.10.N4.02 - VLT is a registered Danfoss trademark
Synchronizing controller
Gear ratio denominator: Record the denominator value of the gear ratio. This
value corresponds to the master pulses.
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
Offset_slave =
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.
Step width: Record a value to specify the position displacement between slave
and master.
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:
N * 400 * Slaveencod
Set
Factor =
60 *
Example:
Resolution 1024 increments, desired display 100 at 1500
1
1500 * 400
min
Factor =
60 * 100
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:
N * 400 * Masterenco
Set
Factor =
60 *
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:
N * 400 * Slaveencod
Set
Factor =
60 *
* Parameter 738
Parameter 739
er _ resolution
Display _ value
Incr .
* 1024
=
Re v .
102400
der _ resolution
Display _ value
er _ resolution
Display _ value
1
/
min
57