Danfoss VLT 5000 Series Manual page 146

54 SYNCPOSOFFS
Defines the offset for position synchronization
(SYNCM, SYNCP). The offset is also valid for posi-
tion synchronization with marker correction.
This position offset can be altered online at any
time during the synchronization with a command.
NB!
The offset will be executed immediately
when the command SYNCP follows.
NEW
When SYNCM is started, however, the system waits
for the first evaluation of the market pulses. Only
then is the offset applied.
Compatability
To avoid compatibility problems you should
determine the start-up behavior of SYNCM with
SYNCMSTART.
Content
Position offset for position synchronization
Parameter Group
AXS
Unit
qc
Value range
–MLONG ... MLONG
146
VLT ® 5000 SyncPos option
55 SYNCACCURACY
Defines how large the difference between the
actual master and slave position can be during a
position synchronization (SYNCP and SYNCM), so
that the required accuracy is still fulfilled. In con-
trast SYNCERR provides the actual synchroniza-
tion error of the slave in user units.
In the program you can query whether
SYNCACCURACY will be fulfilled using SYNCSTAT.
SYNCACCURACY is important for the marker syn-
chronization in order to be able to report READY,
since otherwise SYNCERR would have to be
queried and compared beforehand.
Content
Size of the accuracy window for position
synchronization
Parameter Group
AXS
Unit
qc
Value range
–MLONG ... MLONG
0 ... MLONG
–MLONG ... –1
# 0
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# 1000
A plus sign supplies the
absolute value to SYNCERR.
A minus sign supplies the syn-
chronization error to SYNCERR
with polarity sign. It is then pos-
sible to tell whether the
synchronization is running ahead
or behind.