ABB i-bus KNX Product Manual page 170

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ABB i-bus KNX
Parameters
7.10.1.1.5 —
Dependent parameter
Manual setpoint adjustment via KNX with
This parameter is only displayed if you select No when setting Connect analog room control unit to
physical device input a.
Options:
This parameter determines the data point type used to adjust the setpoint via group objects Request
setpoint adjustment and Confirm setpoint adjustment.
•
DPT 6.010 (meter pulses): This is the only viable option if you are using legacy ABB devices.
•
DPT 9.001 (absolute temperature value): The setpoint adjustment is an absolute temperature value.
The new setpoint temperature is set to adjust the setpoint. Likewise, the Confirm setpoint adjustment
group object sends the new temperature as an absolute value.
•
DPT 9.002 (relative temperature value): The setpoint adjustment is a relative temperature value.
The change in the setpoint temperature (e.g. +2 °C) is sent. Likewise, the Confirm setpoint adjustment
group object sends the new temperature as a relative value.
DPT 9.001 and DPT 9.002 temperature adjustment will not work on legacy ABB devices that do not yet
support the latest version of the master/slave concept. For these devices, DPT 6.010 is the only option,
which means that other equipment (such as display systems) cannot read the setpoint adjustment.
However, they can read or display the current setpoint temperature via the Current setpoint group object.
Before adjusting a setpoint with an analog room control unit, please check which setpoint adjustment
format the controller supports.
You can also communicate a setpoint change to the device via the group object Base setpoint or the
group object Comfort heating setpoint or Comfort cooling setpoint. This value is then also applied as
a new setpoint and implemented.
Caution! Note that changing the base setpoint also changes the Standby and Economy temperatures.
To prevent this, use absolute rather than relative setpoint adjustment (Setpoint manager – Setpoint
specification and adjustment). However, note that with both types of adjustment, the parametrized
maximum setpoint increase/reduction limits are no longer taken into account.
168 2CDC508220D0211 Rev. A | VC/S 4.x.1
DPT 6.010 (meter pulses)
DPT 9.001 (absolute temperature value)
DPT 9.002 (relative temperature value)
Note