ABB i-bus KNX Product Manual page 86

®
ABB i-bus KNX
Parameters
—
Dependent parameter
Limit temperature
Options:
The value set here specifies the limit temperature that is not allowed to be exceeded (heating) or dropped
below (cooling). If the temperature reaches this value, the control value is immediately set to 0.
The value set here is compared with the value received via a group object or via one of the physical device
inputs (depending on the option selected, in the Input for temperature limit sensor parameter).
—
Dependent parameter
Limit temperature hysteresis
Options:
The hysteresis on the limit temperature specifies the value by which the limit temperature must be dropped
below again (heating) or exceeded (cooling) before the controller becomes active again.
—
Dependent parameter
I-proportion on limitation
This parameter is only visible if the PI continuous (0...100%), PI PWM (On/Off) has been selected in the
Basic-stage heating control value type parameter.
Options:
This parameter decides what is to happen to the I-proportion on reaching the limit temperature.
•
Freeze: The I-proportion is frozen at the actual value. As soon as the controller is active again,
it continues to operate with the same I-proportion as before reaching the limit.
•
Reset: The I-proportion is reset to 0. Once the controller becomes active again, the I-proportion starts
at 0.
84 2CDC508220D0211 Rev. A | VC/S 4.x.1
20...30...50 °C
00.5...01.0...05.0 K
Freeze
Reset