ABB 2CSYK1201C Product Manual page 27

MYLOS Building Automation
®
This function allows you to specify the mode of control. You can select "2-step control", "PWM control", "Continuous
control" or "FanCoil actuation" (see also page 37 and following).
This parameter is only available if the "Heating" or "Heat and cool" control functions are set.
Note: the fan can be set with a push-switch in Fan Coil only. The push-switch has no function with other control
types and fan stage display is hidden.
Hysteresis
Options:
- 0.0 K
- 0.1 K
- 0.2 K
- 0.3 K
- 0.4 K
- ...
- 1.0 K
- ...
- 2.0 K
Set a hysteresis value to ensure that the valve does not constantly switch with each minor under and overshoot when
using 2-step control of the actuator. The hysteresis value lies around the setpoint. For example, if the setpoint is 21
°C and the hysteresis is 1 K, the room thermostat only sends an "on" signal at 21.5 °C and an "off" signal at 20.5 °C.
This parameter is only available if "2-step control" is set as the control type.
Invert heating
Options:
- Yes
- No
"Invert heating" is used to adjust the direction of control action of the control value to "de-energised open" or "de-
energised closed" valves. This parameter is only available if "2-step control" is set as the control type.
Control value larger when sending change
Options:
- 0%
- 1 %
- ...
- 5 %
- ...
- 15 %
The parameter "Control value larger when sending change" can be used to influence the bus load. This setting is
configured in percentages. The higher the selected value, the fewer the control value telegrams sent by the room
thermostat. However, the value should not be set too high to ensure the control works properly. A value of 5% will
generally provide good control results.
This parameter is only available if the "Heating" or "Heat and cool" control functions are set and the "Heating" control
type is set to "Continuous" or "FanCoil".
Commissioning
MYLOS Building Automation | Commissioning 27
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