ABB i-bus EIB Product Manual page 23

®
ABB i-bus EIB / KNX
© 2004 ABB STOTZ-KONTAKT GmbH
Application and planning
The diagram shows the control of a fan coil unit, consisting of a fan drive (3
speed) and two valves for a cooling or heating circuit. The device is
therefore a 3- or 4-pipe version.
Five switch outputs are required for control which is why three switch
actuator modules are necessary. The free output can be used elsewhere.
Switch output A of the switch actuator at the top controls fan seed 1 and
simultaneously adopts the function of the "master". The remaining outputs
must be parameterised as "slaves". The master controls the slaves via the
normal group address assignment.
Allocation of group addresses
Switch Actuator Module M1
SA/M 2.6.1
Output A
Control value heating
(Master)
Control value cooling
Slave fan speed 2
Slave fan speed 3
Slave valve heating
Slave valve cooling
Output B
Fan coil slave
Switch Actuator Module M2
SA/M 2.6.1
Output A
Fan coil slave
Output B
Fan coil slave
Switch Actuator Module M3
SA/M 2.6.1
Output A
Fan coil slave
Variations
If the fan coil is only either cooling or heating (2-pipe-version), only one valve
is required and two switch actuator modules are sufficient.
When using electrothermal valve drives for valve control, the use of
Electronic Switch Actuator Modules (ES/M) is recommended.
1 byte
from the room thermostat
1 bit
23