ABB i-bus
®
KNX
Parameters
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 233
Forced operation overrides the outputs and places them in a defined state. However, this action
has no effect on the control values sent by the controller via the bus or the master/slave communi-
cation; this communication continues to take place.
So that an actuator actuated by the controller in this device behaves the same, forced operation
must be correspondingly parameterized also on this device and it must be linked to the same
group address.
7.7.1.1
Forced operation dependent parameters
The following parameters are available with forced operation activated. On the usage of the
Forced
operation 2 bit
option, these parameters are available twice, once for the ON state and once for the
OFF state.
7.7.1.1.1
Selection of Controller
The following parameters are visible if the
Controller
option has been selected in the
Device
function
parameter.
7.7.1.1.1.1
—
Dependent Parameter
Control value / Control value for forced operation ON / Control value for forced operation
OFF
Options:
0…100
This parameter is used to specify the control value that is to apply with forced operation active (for
2-bit in the related state, ON or OFF).
The control value refers only to the valve for the currently active type of operation (heating or cool-
ing).
Note
If, in the controller mode, both the basic and additional stage are output via the valve outputs
(e.g. basic-stage heating = valve A; additional-stage heating = valve B), the value set here is con-
verted into a control value for both stages. Here the range 0…50 % specifies the control value for
the basic stage and the range from 51…100 % the control value for the additional stage, if the
control value for the basic stage is 100 % at the same time.
Example:
Control value on forced opera-
tion
Basic-stage control value
Additional-stage control value
0 %
0 %
0 %
1 %
2 %
0 %
25 %
50 %
0 %
50 %
100 %
0 %
51 %
100 %
2 %
75 %
100 %
50 %
100 %
100 %
100 %
Table 32: Control values
