ABB i-bus KNX, Product Manual, Page: 87 / 264

ABB i-bus
®
KNX
Commissioning
FCA/S 1.x.x.1 | 2CDC508134D0202 85
Fan Coil operating mode: 2 control values/1 valve
What does the option control value input "2 control values/1 valve" mean?
Example: Valve and three-speed fan
Control value processing in the device
Analog:
Output A Output C
Control value input
2 control values/1 valve

-
Motor-driven (3-point):
Output A/B Output C/D
Control value input
2 control values/1 valve

-

= Control value functions
- = Control value does not function
If the option 2 control values/1 valve is selected, the control values will operate on output A (B).
The two control values, heating and cooling, are compared internally and the larger value operates on
output A or B (valve).
The function of the two fans EFG control values A and B is set in the application. In this example, "Number
of control value inputs" is parameterized to 2 and the reaction to "Largest value".
To ensure correct operation of the Fan Coil, the fan EFG control value A is connected with the control
value cooling and the fan EFG control value B with the control value heating.