P.194), P.196), P.110) – Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 User Manual
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FlexPak 3000 DC Drive Software Reference
ANALOG
MAN
TRIM
REF
(P.194)
The trim reference
value used when
TRIM
REFERENCE
SELECT
(P.108) is set
to
ANALOG
MANUAL
.
Parameter Range:
n/a
Default Setting:
n/a
Parameter Type:
Output
OIM Menu Path(s):
Drive Reference - Drive Reference Scaling
Drive Reference - Drive Reference Test Points
DRAW
PERCENTAGE
OUT
(P.196)
The product of the
selected trim
reference value and
TRIM
RANGE
value.
Parameter Range:
n/a
Default Setting:
n/a
Parameter Type:
Output
OIM Menu Path(s):
Drive Reference - Drive Reference Test Points
DRAW
PERCENTAGE
OUT
dynamically changes the acceleration and deceleration
rates when
TRIM
MODE
SELECT
is set to
PROPORTIONAL
.
DRAW
PERCENTAGE
OUT
is also used to generate the
TRIM
OUTPUT
signal, which
modifies the speed reference signal when
TRIM
MODE
SELECT
is set to
PROPORTIONAL
or
INCREMENTAL
.
TRIM
MODE
SELECT
(P.110)
Selects the type of
trim mode to be used
by the drive.
Parameter Range:
NO
TRIM
INCREMENTAL
PROPORTIONAL
Default Setting:
NO
TRIM
Parameter Type:
Tunable
OIM Menu Path(s):
Drive Reference - Drive Reference Trim
•
NO
TRIM
: No trim is used.
•
INCREMENTAL
: Depending on the polarity of the trim reference, adds to or
subtracts from the speed reference a constant value that is proportional to
TOP
SPEED
(P.011).
•
PROPORTIONAL
: Depending on the polarity of the trim reference, adds to or
subtracts from the speed reference a value that varies based on the speed
reference value. Proportional trim allows multiple drive sections with a common
reference to operate and ramp at different values.
Proportional is a type of draw. By using draw, one section can operate 10% faster
than an upstream section. When a ramp occurs on the common reference, the
two sections will support the 10% draw throughout the ramp.
S
-
CURVE
ROUNDING
will interfere with the acceleration and deceleration rates so that the draw will not
be constant. Therefore, it is recommended that
S
-
CURVE
ROUNDING
be set to 0%
when
TRIM
MODE
SELECT
is set to
PROPORTIONAL
. Incremental trim is not affected
by this limitation.