
4-4
4.2 Speed rates
F
UNCTIONAL
D
ESCRIPTIONS
8310/8610-8
Example 2: Irrespective of the actual measuring unit used in the equipment
(e.g. mm, resolution 0.1 mm), the speed rates of the drive shall be
entered in revolutions/min (rpm) without any decimal places and
with 1 revolution corresponding to a distance of 10.0 mm:
storage location 3/5
= 1 (»X.X«)
storage location 3/46 = 0 (»X.«)
storage location 3/45 = (1 revolution/min) / (1 mm/sec)
∗
10 =
= (10 mm/60 sec) / (1 mm/sec)
∗
10 =
= 10 / 60
∗
10= 1,6667
The above facts are represented again for those who prefer to work with
mathematical formulas:
c
D
A
c
v
DA DD
v
=
<
−
*
(
)
(
)
10
100
c
v
:
conversion factor according to »Spd.mult« at storage location 3/45
D
:
desired unit of length or angle per each unit of time for the speed
A
:
actual measuring unit per second (default unit of the speed)
DA
: number of decimal places in the actual value display (storage location 3/5)
DD
: number of desired decimal places for the speed (storage location 3/46)
The following formula can be used for checking:
v
c
v
A
v
D
= ∗
v
A
: speed in the Controller-internal format (actual measuring
units/sec without decimal point: value in DispU)
v
D
: speed in the desired format (value in DispU)
Содержание GEL 8310
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