How To Program Synchronization - Danfoss VLT 5000 Operating Instructions Manual

How to program synchronization

Change the value of parameter 701 to "2". This will start the synchronization program of VLT
5000/VLT 5000 Flux.
To do the synchronization programming you use the following parameters:
Parameter 725
Parameter 726
Parameter 727
Parameter 728
Parameter 737
Parameter 738
Parameter 739
Parameter 743
Parameter 744
Parameter 745
MG.10.N4.02 - VLT is a registered Danfoss trademark
Synchronizing controller
Type of operation: Record "0" or "3" for speed synchronization.
Hold function: Specify how the drive is to react when Input 29 is activated .
"Hold" switches the drive from master synchronization to a fixed frequency.
Choose "0" to use the frequency set in par. 727 and "1" to use the current
frequency.
Hold speed: Set here, as a percentage of the maximum speed, the speed at
which the drive should move when you activate Hold and the value "0" was
selected in Parameter 726.
Delta hold speed: Set here the step width by which the hold speed is to be
changed upwards or downwards by activating Terminals 32 + 33.
Gear ratio No.: Record the number of the gear ratio that is to be displayed in
Parameters 738 to 739. Then you set the values required in Parameters 738 to
740. Follow the same procedure for the next gear ratio(s).
Gear ratio numerator: Record the numerator value of 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.
Gear ratio denominator: Enter here the denominator value of the gear ratio.
This value corresponds to the master pulses.
Step time: In Hold mode, the next frequency change and, in synchronization
mode, the next change of the counter factor of the gear ratio, is carried out
after this time, on the presence of one of the signals at terminal 32 or 33. The
time input is in milliseconds.
Step width: In speed synchronization, the gear ratio numerator is changed by
this amount, if one of the terminals 32 or 33 is closed.
Slave speed factor: Record the factor by which the slave speed must be
multiplied, so that it can be displayed. 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
er _ resolution
Display _ value
Incr .
* 1024
=
Re v .
102400
1
/
min
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