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ABB i-bus KNX
3.2.7.1
Parameter window
Valve HEATING –
Continuous PWM
© 2010 ABB STOTZ-KONTAKT GmbH
Commissioning
This parameter appears if the option Continuous, PWM has been selected
in the Valve control parameter.
Pulse width modulation
(PWM), page 142
Valve type
Options:
de-energised closed
de-energised opened
Using this parameter the valve type for the connected valve is set.
How does a de-energised closed (normally closed) valve
behave?
If no current flows in the control circuit the valve is closed.
The valve is opened as soon as current flows in the control circuit.
How does a de-energised opened (normally open) valve behave?
If no current flows in the control circuit the valve is opened.
The valve is closed as soon as current flows in the control circuit.
de-energised closed: The following parameter appears:
Valve position on bus voltage failure
Option:
closed
This option is intended as a marker. The valve remains closed at bus
voltage failure.
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