Danfoss MCO 305 Design Manual page 32

MCO 305 Design Guide
In addition to start and stop of marker synchro-
nizing the sample program has measuring of both
Master and Slave Marker Distance. The average
distance between the detected markers is
calculated and the marker distance parameters
(33-17 and 33-18) are automatically set.
NOTE: The following is just an example and the
presented settings and programs might not cover
the complete functionality required by a real
application.
It is assumed that the motor and encoder connec-
tions are checked and that all basic parameter
settings such as motor data, encoder data and PID
controller are done. Instructions for setting up
parameters can be found in FC 300 Operating
Instructions and MCO 305 Operating Instructions.
Parameter Settings and Commands for Packaging Application
The following MCO 305 parameters are relevant for
marker synchronization:
Command Description
DEF SYNCORIGIN Defines master-slave relation for
the next SYNCP or SYNCM
command.
MOVE SYNCORIGIN Relative shifting of the origin of
synchronization.
PULSACC Sets acceleration for master
simulation.
PULSVEL Sets velocity for master simulation. PULSVEL v
SYNCM Synchronization of angle/position
with marker correction.
SYNCSTAT Queries flag for synchronization
status.
SYNCERR Queries actual synchronization
error of the slave.
IPOS Queries last index or marker
position of the slave.
MIPOS Queries last index or marker
position of the master.
32
__ Functions and Examples __
Syntax
DEFSYNCORIGIN
master slave
MOVESYNCORIGIN
mvalue
PULSACC a
SYNCM
res = SYNCSTAT
res = SYNCERR
res = IPOS
res = MIPOS
®
MG.33.L4.02 – VLT is a registered Danfoss trademark
32-0* Encoder 2 – Slave
32-3* Encoder 1 – Master
32-6* PID-Controller
32-8* Velocity & Acceleration
33-1* Synchronization
Parameter
master = reference position in
qc
slave = reference position
mvalue = Relative offset
a = acceleration in Hz/s
v = velocity in pulses per
second (Hz)
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