Danfoss MCO 305 Operating Instructions Manual page 20

MCO 305 Operating Instructions
Setting of Home Parameters
Homing is not necessary in standard synchronization applications and applications using an absolute
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
FC 300 functions during a home run: input depends
on the application.
Define par. 33-03 Velocity of Home Motion: Home
speed is entered in % relative to the maximum
speed of the drive.
Setting of Synchronization Parameters
The following parameters are only relevant for
synchronizing applications:
Par. 33-10, 33-11: Synchronizing Factor Master
and Slave
The Synchronizing Factors Master and Slave must
be set according to the gear ratio between master
and slave encoder.
The following parameters are only relevant when using synchronizing with marker correction (SYNCM):
Par. 33-15, 33-16: Marker Number for Master and
for Slave
Marker Number for Master and Slave 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.
Par. 33-17, 33-18: Master and Slave Marker Distance
When using the encoder zero pulse as marker signal the distance between 2 markers is the resolution (qc)
of the encoder.
When external marker signals are used, the marker distance can be measured by means of the program
sample "Marker count" (see chapter program samples) if it is unknown.
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Example:
Both encoders have 1024 PPR, master is running
305 RPM and slave must run 1220 RPM.
par. 33-10 Syncfactor Master
par. 33-11 Syncfactor Slave
Alternative:
par. 33-10 Syncfactor Master
par. 33-11 Syncfactor Slave
MG.33.K2.02 – VLT is a registered Danfoss trademark
33-0* Home Motion
33-00 Force HOME
33-01 Zero Point Offset from
Home Position
33-02 Ramp for Home Motion
33-03 Velocity of Home Motion
33-04 Behavior during Home
Motion
33-1* Synchronization
33-10 Synchronization Factor
Master (M:S)
33-11 Synchronization Factor Slave
(M:S)
33-15 Marker Number for Master
33-16 Marker Number for Slave
33-17 Master Marker Distance
33-18 Slave Marker Distance
33-19 Master Marker Type
33-20 Slave Marker Type
Default
[0] not forced
0
10
10
[0] Reverse
+ Index
= 305 and
= 1220
= 1
= 4
Default
1
1
1
1
4096
4096
[0] Enc. Z pos.
[0] Enc. Z pos.