Danfoss VLT5000 SyncPos Operating Instructions Manual page 30

■ ■ ■ ■ ■ Setting of SyncPos parameters: Velocity
This parameters you will find in the parameter
elocity in the menu "CONTROLLER" → → → → →
group V V V V V elocity elocity elocity elocity
"PARAMETER" → → → → → "AXIS":
VELMAX (1)
Maximum velocity Maximum velocity Maximum velocity of the shaft where the encoder Maximum velocity Maximum velocity
is mounted in RPM.
N B!
For synchronizing the setting must be at
least the same as the maximum velocity of
the master in order to be able to synchronize. For
position synchronizing it must even be higher so
that the slave can catch up lost position related to
the master. All velocity commands (VEL, CVEL) are
related to this value.
RAMPMIN (31)
The Shortest ramp Shortest ramp Shortest ramp Shortest ramp is the time from 0 to maximum Shortest ramp
velocity and from maximum velocity to 0. All accele-
ration and deceleration commands (ACC. DEC) are
related to this value.
■ ■ ■ ■ ■ Setting of SyncPos option parameters: Home
Homing is not necessary in standard synchroniza-
tion applications and applications using an abso-
lute encoder.
When using an incremental encoder the controller
must be run to home after being switched on.
During this process the reference switch defines
the position at which 0 is located and how the VLT
functions during a home run: input depends on the
application.
HOME_VE L (7)
Home speed Home speed Home speed is entered in % relative to the Home speed Home speed
maximum speed maximum speed maximum speed maximum speed of the drive. maximum speed
You can find these values in the description of the
motor.
MG.10.J8.02 – VLT is a registered Danfoss trade mark
Programmable SyncPos motion controller
■ ■ ■ ■ ■ Setting of SyncPos parameters:
Synchronization
The following parameters are only relevant for
synchronizing applications: Open in the menu
"CONTROLLER" → → → → → "PARAMETERS" → → → → → "AXIS" the
Synchronization. Synchronization.
parameter group Synchronization. Synchronization. Synchronization.
SYNCFACTM (49) and SYNCFACTS (50)
The Synchronizing factors master Synchronizing factors master Synchronizing factors master Synchronizing factors master Synchronizing factors master and slave
SYNCFACTM and SYNCFACTS must be set accor-
ding to the gear ratio between master and slave
encoder.
Example: Both encoders has 1024 ppr, master is
running 305 RPM and slave must run 1220 RPM.
SYNCFACTM = 305 and
SYNCFACTS = 1220.
Alternative: SYNCFACTM = 1
SYNCFACTS = 4.
The following parameters are only relevant when
using synchronizing with marker correction
(SYNCM).
Open the parameter group Synchronization
menu "CONTROLLER" → → → → → "PARAMETERS" → → → → →
"AXIS":
SYNCMARKM (52) and SYNCMARKS (53)
Number of master marker pulses and number of
slave marker pulses.
SYNCMARKM and SYNCMARKS must be set
according to the ratio between the number of
marker signals from master and slave. A ratio of
1:1 means that each slave marker will be aligned
with each master marker. A ratio of 2:1 means that
each slave marker will be aligned with each
second master marker.
slave slave slave slave
Synchronization in the Synchronization Synchronization
Synchronization
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