Temperature Reading - Control Value For Fault (0 - 255); Alarm Functions - Frost Alarm Temperature For Hvac And Rhcc Status (°C); Alarm Functions - Heat Alarm Temperature For Rhcc Status (°C); Control Of Additional Heating Stage - Temperature Difference To Basic Stage (X 0.1°C) - ABB IP Touch 7 Manual

2.21.44 Temperature reading — Control value for fault (0 - 255)
Options:
In the event of a failure of the actual temperature measurement, the device will no longer be
able to independently determine the control value. In case of an error, a PWM control (1 Bit)
with a fixed cycle time of 15 minutes is used automatically instead of a parameterized 2-point
control (1 Bit). In this case the set parameter value is taken into consideration for the control
value during an error.
2.21.45 Alarm functions — Frost alarm temperature for HVAC and RHCC status (°C)
Options:
The RHCC status and HVAC objects have a frost alarm bit. It the input temperature of the
controller drops below the temperature set in this parameter, then the frost alarm bit is set in the
status objects. It is reset when the temperature is exceeded.
2.21.46 Alarm functions — Heat alarm temperature for RHCC status (°C)
Options:
The RHCC status object has a heat alarm bit. If the input temperature of the controller exceeds
the temperature set in this parameter, then the heat alarm bit is set in the status object. It is
reset when the temperature falls below the set temperature.
Note
The following parameters are available when the "Controller function" parameter
is set on "Heating with additional stage".
The same parameters are available which are also available when parameter
"Controller function" is set on "Heating" and parameter "Control value type" on
"2-point 1 bit, On/Off" or "2-point 1 byte, 0/100%".
Note
The additional parameter "Control value type" is available for the additional
stage.
2.21.47 Control of additional heating stage — Temperature difference to basic stage (x 0.1°C)
Options:
The setpoint temperature of the additional stage is defined as a function of the current setpoint
temperature of the base stage and is expressed as a difference. The value represents the
setpoint value starting at which the additional stage will operate.
Product manual 2CKA001473B5023
Control elements and application parameter
Setting option between 0 - 255
Setting option between 0 - 15
Setting option between 25 - 70
Setting option between 0 - 255
Application "Internal RTC"
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