8.2 Controller Cntr  
 
Here, the type of controller, operating action, setpoint limits and presettings for self-
optimization are selected. 
 
ConF  Cntr  
 
Parameter Value/ 
selection 
Description 
1  3-position controller (RWF50.2) 
Controller type 
CtYP 
Controller type 
2 Modulating controller (RWF50.3) 
1 Heating controller Operating action 
CACt 
Control direction 
0 Cooling controller 
(1)
(0)
7866d14/0512
 
(0) = cooling controller: 
The controller’s angular positioning (Y) is >0 when the actual value 
(x) lies above the setpoint (w) 
 
(1) = heating controller: 
The controller’s angular positioning (Y) is >0 when the actual value 
(x) lies below the setpoint (w) 
Setpoint limitation start 
SPL 
Setpoint limitation low 
-1999... 
+9999 
Setpoint limitation end 
SPH 
Setpoint limitation high 
-1999... 
+9999 
Setpoint limitation prevents values from being entered outside the 
defined range. 
0 Free 
1 Locked 
Self-optimization 
 
Self-optimization can only be disabled or enabled via the ACS411 
setup program 
 
If disabled via ACS411 PC software, self-optimization cannot be 
started via the controller’s buttons 
 
Setting in the ACS411 setup program 
 Controller  Self-optimization 
 
Self-optimization is also disabled when the parameter level is 
locked 
Lower working range limit 
oLLo 
Lower operation range limit 
-1999... 
+9999 
 
Note! 
If the setpoint with the respective hysteresis exceeds the 
upper working range limit, the switch-on threshold is 
substituted by the working range limit. 
Upper working range limit 
oLHi 
Upper working range limit 
-1999... 
+9999 
 
Note! 
If the setpoint with the respective hysteresis drops below 
the lower working range limit, the switch-off threshold is 
substituted by the working range limit.