Danfoss VLT 5000 Operating Instructions Manual page 27

Synchronizing controller
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Test run, program 1:
729
Activate feed forward and PID calculation (FFVEL calc.): This parameter is used to
trigger automatic calculation of the optimal value for velocity feed forward (par. 707) as
well as PID sample time (par. 777), proportional factor (par. 702) and derivative factor
(par. 703).
Setting range:
0
= No action.
1
= Activate calculation of velocity feed forward (par. 707).
2
= Activate calculation of velocity feed forward (par. 707), PID sample time (par.
The parameter value is automatically reset to "0" when the calculation is done.
NOTE: If any of the above mentioned parameters are changed the calculation must be
repeated.
Synchronous operation; Program 2:
Home function: Select how the drive is to behave on starting.
0
= the drive can synchronize from its current position;
1
= after switching on, and after an error, the drive must first be homed, from where
2
= the drive must be homed before each synchronization.
26
Synchronizing controller
The calculation is based on the following parameters that must be set before the
calculation is started:
VLT5000:
Par. 104 "Nominal motor frequency",
Par. 205 "Maximum reference",
Par. 711 "Slave encoder type",
Par. 712 "Slave encoder resolution",
Par. 730 "encoder velocity",
Par. 777 "PID sample time".
VLT5000Flux:
Par. 711 "Slave encoder type",
Par. 712 "Slave encoder resolution",
Par. 730 "encoder velocity"
Par. 777 "PID sample time".
777), Proportional factor (par. 702) and derivative factor (par. 703).
The calculations are based on the following parameters that must be set before
the calculation is started:
VLT5000:
Par. 104 "Nominal motor frequency",
Par. 205 "Maximum reference),
Par. 711 "Slave encoder type",
Par. 712 "Slave encoder resolution",
Par. 716 "Maximum velocity",
Par. 730 "encoder velocity".
VLT5000Flux:
Par. 711 "Slave encoder type",
Par. 712 "Slave encoder resolution",
Par. 716 "Maximum velocity",
Par. 730 "encoder velocity".
it can synchronize,
MG.10.N4.02 - VLT is a registered Danfoss trademark

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