Parameter Window "Controller Pwm Cooling - ABB i-bus KNX Product Manual

Room thermostat fan coil with display

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ABB i-bus KNX

3.2.7

Parameter window

"Control PWM cooling"

Commissioning

Invert cooling

Options:

- Yes

- No

"Invert cooling" is used to adjust the direction of control action of the control

value to "de-energised open" or "de-energised closed" valves.

Cycle time PWM control value (min)

Options:

- 0 / 1 / 2 / ... / 10 / ... / 60

With PWM control, the actuator switches the valve drive depending on

the control value. The control thereby checks the "Cyclic time of the

switching control value".

Example: for a cyclic time of 10 min. and a control value of 60%, the valve

gear is switched on for 6 min. and off for 4 min.

Basically, the following applies for cyclic time: the more inactive the entire

system, the higher the cyclic time you can set.

This parameter is only available if the "Cooling" or "Heat and cool" control

functions are used and the cooling control type is set to "PWM".

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