Festo CMSX-...-C-U-F1 series, Manual

Page: 37 / 61

CMSX-...-C-U-F1-...
Festo – CMSX-...-C-U-F1-... – 1506a English 37
Character of the setpoint characteristic curve (CHARACTE)
This parameter establishes the character of the setpoint characteristic curve. With the setting “linear”,
the ratio between the analogue setpoint change and setpoint position change (SP) is constant.
Equal percentage characteristic curves progress exponentially with preset signal direction (DIRECT =
increase). In the case of equal percentage characteristic curves, a constant percentage change of the
setpoint position takes place with constant analogue setpoint change.
1 2
3
Linear
1 : 25
1 : 33
1 : 50
4
SPMAX SPMIN
1
Setpoint position SP in [%] (setpoint posi­
tion)
2
Linear characteristic curve (
è
also Fig. 25)
3
Equal-percentage characteristic curve (here
1 : 50)
4
Setpoint signal - scaling is dependent on the
parameters SPMIN and SPMAX
Fig. 26 Character of the setpoint characteristic curve – example (DIRECT = increase)
With User-Def. a user-defined setpoint value characteristic curve can be established over 21 support
points (
è
Section 7.6.8).
D-Out-1, D-Out-2, D-IN
These parameters make possible the functions named in Tab. 16. Parameter changes become effective
immediately after confirmation with the Set key - even in the operating status controller stopped.
If the parameter OPEN is changed, the end positions (limit1, limit2) and stops (lmt1, lmt2) are mixed
up.