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Valve outputs | Command value limit
Setting the activation of the command value limit
The "Activation" parameter on the parameter page "VOx - General - Command value
monitoring" defines the type of action of the limiting function.
The command value limit must be enabled.
￭
Set the parameter to "via object".
The command value limit can only be activated using the 1-bit communication
object "Command value limit - Activate / Deactivate" ("1" telegram) or deactiv-
ated ("0" telegram). The behaviour of the command value limit is definable
separately after a device reset (bus voltage return, ETS programming opera-
tion).
￭
Set the parameter to "permanently active".
The command value limit is permanently active. It cannot be influenced via an
object. Command values preset via the KNX or via emergency operation are
always limited.
Setting the initialisation behaviour of the command value limit
The command value limit can either be activated or deactivated using the 1-bit com-
munication object "Command value limit - Activate / Deactivate" or be permanently
active. When controlling via the object, it is possible to have the actuator activate the
command value limit automatically after bus voltage return or an ETS programming
operation. The parameters "Activate after bus voltage return" and "Activate after ETS
programming operation" define the initialisation behaviour.
With a permanently active command value limit, the initialisation behaviour
cannot be configured after bus voltage return or an ETS programming opera-
tion, as the limit is always active. In this case, no object is available.
The command value limit must be enabled.
￭
Set the parameter "Active after bus voltage return" to "no".
The command value limit is not activated automatically after bus voltage re-
turn. A "1" telegram must first be received via the "Command value limit" ob-
ject for the limiting function to be activated.
￭
Set the parameter "Active after bus voltage return" to "yes".
In this setting, the actuator does not activate the command value limit auto-
matically after bus voltage return. To deactivate the limit a "0" telegram must
be received via the "Command value limit" object. The limit can be switched on
or off at any time using the object.
￭
Set the parameter "Active after ETS programming operation" to "no".
The command value limit is not activated automatically after an ETS program-
ming operation. A "1" telegram must first be received via the "Command value
limit" object for the limiting function to be activated.
￭
Set the parameter "Active after ETS programming operation" to "yes".
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
Page 86 of 257
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