User manual
13-3
DSC/DSCT Series
"trigger" position
SEARCH
Zero pos.
offset P9
"TRIGGERING"
OFFSET DISPLACEMENT
resolver
Zero
resolver
zero
Pos.
corrisponding
to the resolver
zero
Pos.
corrisponding
to the resolver
zero
"trigger" position
So the offset displacement is calculated from the position corresponding to the nearest resolver zero. In this
way the positioning precision is 0,005/CP degree, where CP is the number of resolver polar couples.
To find the desired offset displacement it is suggested to set in P09 a displacement of exactly one motor
revolution:
P9 = Number of enc. puls. set in c11 x P54/2,
and then, looking at the position where the motor stops, to adjust the value of P09 until the motor stops in the
desired position.
WARNING
: the offset displacement set in P09 must be not less than one motor revolution.
MOVEMENT RANGE OF THE MOTOR
LS2
LS1
CCW
CW
ZERO
RESOLVER
CONSIDERED
CCW SEARCH C38=0
0
MOVEMENT RANGE OF THE MOTOR
OFFSET NUMBER
MOTOR POS.
AFTER ZERO
SEARCH
ZERO
RESOLVER
CONSIDERED
LS1
LS2
CCW
CW
CW SEARCH
C38=1
(POSITIVE)
(NEGATIVE)
MOTOR POS.
AFTER ZERO
SEARCH
OFFSET NUMBER
0
