ABB i-bus FCC/S 1 1 Series Product Manual page 196

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ABB i-bus KNX
Parameters
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7.5.1.8.1.1.2.1 Dependent Parameter
Control value direction
This parameter is only visible if the Via group object option has been selected for the Actuate
basic-stage cooling via parameter in the Application parameters parameter window.
Options:
This parameter is used to specify the control value direction if it is only output via a group object.
The setting is used to actuate NC (normally closed) or NO (normally opened) valves.
If one of the physical device outputs is used to output the control value, this parameter is not dis-
played because this setting is then made in the related output stage.
• Normal: The control value is output normally.
Control value On/100 % => telegram value On/100 %
Control value Off/0 % => telegram value Off/0 %
• Inverted: The control value is output inverted.
Control value On/100 % => telegram Off/0 %
Control value Off/0 % => telegram On/100 %
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7.5.1.8.1.1.2.2 Dependent Parameter
Hysteresis
Options:
This parameter is used to specify the hysteresis that is to apply to the setpoint to prevent continu-
ous switching of the controller.
• Upper switching point = setpoint + hysteresis
• Lower switching point = setpoint – hysteresis
Heating controller:
• If the actual temperature is below the lower switching point, the controller switches on.
• If the actual temperature is above the upper switching point, the controller switches off.
Cooling controller:
• If the actual temperature is below the lower switching point, the controller switches off.
• If the actual temperature is above the upper switching point, the controller switches on.
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7.5.1.8.1.1.2.3 Dependent Parameter
Send control value cyclically (0 = cyclical sending disabled)
This parameter is only visible on the selection of the PI continuous (0...100 %) or PI continuous
(0...100 %) for Fan Coil option.
Options:
This parameter is used to specify the cycle time with which the control value is to be sent.
On the selection of the value 0, cyclic sending is deactivated.
Normal
Inverted
0.3...0.5...25.5
0...15...60
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 196