Cashco Siemens PS2 I/P - Manual (Page 80)

Operation
80
SIPART PS2 Manual
A5E00074631-01
Positioning actuator type
Selection of used actuator: Linear actuator (WAY), rotary actuator
(turn). The unlinearity which exists in linear actuators due to the
conversion of linear movement to rotational movement is compensated
by the positioner when 1.YFCT = WAY is selected.
If an external, linear potentiometer is used for displacement measuring,
“1.YFCT” is set to LWAY. However, no way is displayed after
initialization.
Special case: Use this setting for rotary actuators with reverse
direction of action as well.
When using a rotary actuator with NCS sensor for position detection,
select 1.YFST = ncST or --ncST
Rated angle of rotation of the feedback shaft
In rotary actuators, an angle of 90° is preset automatically by 1.YFCT =
turn (see above). In linear actuators (1.YFCT = WAY) a value of 33° or
90° can be selected depending on the stroke range:
-
33° for strokes £ 20 mm
-
90° for strokes > 20 mm
When using the lever up to 35 mm, both angles of rotation (33° and
90°) are possible.
The long lever (> 35 mm stroke) is only designed for an angle of
rotation setting of 90°. It is not part of the mounting kit set 6DR4004-8V
but must be ordered separately under order number 6DR4004-8L.
.
NOTE
The setting of the transmission ratio selector on the positioner (see
figure 2-1, page 16 and figure 2-2, page 17) must correspond to the
angle value selected under “2.YAGL”.
Lever arm transmission
.
NOTE
The use of this parameter is optional. You only need to set this
parameter if you want to have the way in mm displayed at the end of
the initialization.
Selection of the lever arm range: serves to display the real stroke after
initialization.
This parameter is only relevant for linear actuator. If the parameter
value ”oFF” is selected here, the real stroke is not displayed after
initialization.
1.YFCT
2.YAGL
3.YWAY