Danfoss MCO 305, Design Manual, Page: 198 / 242

MCO 305 Design Guide
__ Parameter Reference __
¾ default setting [ ] value for use in communication via serial communication port
198
MG.33.L4.02 – VLT
®
is a registered Danfoss trademark
33-18 Slave Marker Distance
SYNCMPULSS
Range [Unit]
0 – MLONG
[qc] or in CAM mode [UU]
¾ 4096
Function
The Slave Marker Distance defines how many qc
(slave) lie between two markers (slave) or in CAM-
Mode the distance of the sensor to the working
position in UU.
Slave Marker Distance is only valid for synchroniza-
tion with slave marker correction (SYNCM and
SYNCCMS).
33-19 Master Marker Type
SYNCMTYPM
Option
¾ Encoder Z positive flank [0]
Encoder Z negative flank [1]
External marker positive flank [2]
External marker negative flank [3]
Function
Defines the signal type for the master marker:
index pulse of the encoder or external marker.
Master Marker Type is only valid for synchroniza-
tions with marker correction (SYNCM and
SYNCCMM) or if the command MIPOS should be
used in the program.
External master marker signal: Input 5.
33-20 Slave Marker Type
SYNCMTYPS
Option
¾ Encoder Z positive flank [0]
Encoder Z negative flank [1]
External marker positive flank [2]
External marker negative flank [3]
Function
Defines the signal type for the slave marker: index
pulse of the encoder or external marker.
Slave Marker Type is only valid for synchronizations
with marker correction (SYNCM and SYNCCMS) or
if the command MIPOS should be used in the
program.
External slave marker signal: Input 6
33-21 Master Marker Tolerance Window
SYNCMWINM
Range [Unit]
0 – par. 33-17
Master Marker Distance
0 = Off
[qc] or in CAM mode [MU]
¾
0
Function
The Master Marker Tolerance Window shows how
large the permitted tolerance for the occurrence of
the markers is.
With the default setting [0] the window is not
monitored, which means that it is always synchro-
nized to the next marker even if this has a conside-
rably larger interval.
At every other setting only those markers are
accepted which are within the window. If there is
no marker within the tolerance window the corres-
ponding flag (SYNCSTAT) is set and no marker
correction takes place. The corresponding other
marker is also ignored and only corrected the next
time, i.e. no catching up to the next marker.
When SYNCM (or SYNCCSTART) is started the
monitoring only begins when the first marker has
been found.
NB!:
Changes of the parameter will become
active immediately – not only after the
next SYNCM command.
Example
Par. 33-17 Master Marker Distance = 30000
Master Marker Tolerance Window = 1000
Only one marker within an interval of 29000 to
31000 is accepted.