ABB 2CSYK1201C Product Manual page 29

MYLOS Building Automation
®
PWM cycle is 0% up to control value
Options:
- 0%
- 5 %
- ...
- 10 %
- ...
- 30 %
If the control value is very small for PWM control, the authorisation period for the actuator might not be sufficient
to put in motion the connected thermoelectric valve gear. A valve drive opens or closes by warming or cooling an
expansion element. However, it always takes time for the element to heat up or cool off sufficiently to allow the valve
to be opened or closed. As a result, the valve might not even open with very small control values.
The parameter "PWM cycle is 0% up to control value" can be used to prevent switching with control values that
are too small. This parameter allows you to configure the control value that determines actuator authorisation. This
parameter is only available if the "Heating" or "Heat and cool" control functions are used and the heating control
type is set to "PWM".
Percentuale massima per il disinserimento della tensione alla valvola termoelettrica
Options:
- 70%
- 75 %
- ...
- 90 %
- ...
- 100 %
If the control value is very large for PWM control, the switch-off period for the actuator might not be sufficient to put
in motion the connected thermoelectric valve gear. A valve drive opens or closes by warming or cooling an expansion
element. However, it always takes time for the element to heat up or cool off sufficiently. As a result, the valve might
not even close with very large control values.
The parameter "PWM cycle is 100% down to an output value" can be used to prevent switching with control values
that are too large. It also sets the control value from which the actuator switches off.
This parameter is only available if the "Heating" or "Heat and cool" control functions are used and the heating control
type is set to "PWM".
Commissioning
MYLOS Building Automation | Commissioning 29
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