West Control Solutions KS98-1 - Manual (Page 101)

Calculation clarity can be reached by limiting the input signal (e.g. to the 1st and 2nd quadrant (0°...180° /0... ó). Inter-
nal limiting is omitted. If input value
x1 is out of the range in which the cosinus function can still provide purposeful
values, output y1 is set to 1,5 w 10 37 .
Example degree of angle:
y1= cos(x1) x1 = 60°
= y1 = 0,5
Example radian:
y1= cos(x1) x1 = 45rad =
y1 = 0,525321988
Parameter Description Controller display
Select
Unit: degree of angle (default) Ang.deg
Unit: radian Radian
Important: When controlling with the pocket calculator see r page 100
III-3.3 TAN (tangent function (No. 82))
y x
1
tan 1) =
(
valid for x x x _ :
1 1 1
90 90
2 2
- °< <+ ° - < <
ж
и
з
ц
ш
ч
p p
The function provides the tangent of the input value, i.e. x1 is the angle the tangent of which is calculated.
Parameter Select is used to adjust, if the angle is provided in degree of angle [°] or in radian.
For calculation clarity the argument range is limited to the 1st or 4th quadrant (-90° ... 90° or - у /
2
... у /
2
). If input value
x1 is out of this range, output y1 -1, w 10 37 ( x1<-90 [- ó /
2
]) or 1,5 w 10 37 (x1>90 [ ó /
2
]) is set.
Example degree of angle:
y1= tan(x1) x1 = 60°
= y1 = 1,73205
Example radian:
y1= tan(x1) x1 = 1,53rad =
y1 = 24,498
Parameter Description Controller display
Select
Unit: degree of angle (default) Ang.deg
Unit: radian Radian
Important: When controlling with the pocket calculator see r page 100
Trigonometric functions 9499-040-82711
III-101 TAN (tangent function (No. 82))
x1 y1
Select
(y1) = tan (x1)