ABB i-bus KNX Product Manual page 217

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ABB i-bus KNX
Group objects
No.
56
The group object is enabled if the parameter Setpoint specification and adjustment is set to Relative in the Setpoint manager
parameter window.
This group object is hidden in actuator mode.
This group object can change the parametrized basic setpoint. In this way the setpoints assigned to the individual operating
modes (Comfort, Standby, Economy) can be shifted.
The relative distances between the setpoints remain the same, the Comfort value is shifted accordingly.
Depending on the selection in the parameter Base setpoint is, the base setpoint is the Comfort heating setpoint, Comfort
cooling setpoint or the Mean value between Comfort heating and cooling.
The basic setpoint is set to the temperature value received via this group object.
However, the value must not lie outside the value range valid for the basic setpoint (10...40 °C).
The setpoint temperatures for frost and heat protection remain unaffected by this change.
57
This group object is enabled if the parameter Connection of an analog room control unit to physical device input a in the
Setpoint adjustment parameter window is set to No.
This group object is hidden in actuator mode.
This group object can reset the setpoint adjustment performed via KNX (via the group object Request setpoint adjustment).
Activating this group object resets the setpoints to the parametrized setpoints.
58
This group object is enabled if the parameter Dew point alarm input is set to Via group object in the Application parameters
parameter window.
The device must be parametrized for cooling or heating mode for this parameter to be visible.
This group object is hidden in actuator mode.
This group object can receive the dew point status via KNX.
Telegram value:
•
0: Dew point alarm inactive
•
1: Dew point alarm active
When the dew point alarm information is received, this group object changes the device's operating mode to heat protection
to protect the building.
Dew formation, which occurs when reaching the dew point temperature, can damage the building substance.
The alarm is valid as long as the device is in the cooling type of operation or until the alarm is canceled by reception of the
value 0.
The operating mode is recalculated when changing to heating type of operation. Heating can take place as normal, because
the dew point is not a problem during heating.
A higher-priority group object can override the operating mode.
The group objects and states Override mode, Fill level alarm, Dew point alarm, Window contact, Request On/Off (Master),
Presence detector and Operating mode (listed in decreasing priority) determine the controller's setpoint temperature
in addition to manual setpoint adjustment and basic setpoint adaptation.
If a slave is used:
To indicate the operating mode on a slave, the group address associated with this group object must also be connected
to the slave's group object Dew point alarm (slave).
Object function
Base setpoint
Reset manual setpoint adjustment
Dew point alarm
Note
Note
Name
Channel A – Controller
Channel A – Controller
Channel A – Controller
VC/S 4.x.1 | 2CDC508220D0211 Rev. A 215
Data type Flags
2 bytes C, W
DPT 9.001
1 bit C, W
DPT 1.017
1 bit C, W
DPT 1.005