TRA-F12x-A
C
ONFIGURATION
Doc: 70-00-0792B V1.3, 20220830
© Vector Controls GmbH, Switzerland
Page 27-34
Subject to change without notice
www.vectorcontrols.com
V
ECTOR
5.9
Temperature and digital inputs
5.9.1
Parameter P5xx overview
With parameter P500
–
P503 input type and functionality of RT1 and RT2 can be set.
With parameter P504
–
P505 the automatic heat/cool changeover level can be set.
With parameter P506 the built-in temperature sensor calibration (temperature offset) can be set.
If RT1/2 is set to 0 = NTC and an open or short circuit is detected, the error Err3 is generated.
Par/Addr Description
Data type / value
Default R/W
P500
Input RT1 Configuration
0 = Not assigned
1 = Control input instead of built-in
temperature sensor (NTC)
2 = Heat/cool changeover or floor
temperature sensor (NTC or DI)
3 = Occupation sensor
–
Comfort /
Economy (DI)
4 = Occupation sensor
–
Comfort /
Protection (DI)
5 = Door switch (DI, in combination with
occupation sensor on RT2)
6 = Electric heater overheat sensor (DI)
7 = Dew point sensor (DI)
0
R/
W
P501
Definition of RT1
0 = NTC temperature sensor
1 = Normally Open (DI)
2 = Normally Closed (DI)
0 = NTC
R/
W
P502
Input RT2 Configuration
0 = Not assigned
1 = Control input instead of built-in
temperature sensor (NTC)
2 = Heat/Cool changeover or floor
temperature sensor (NTC or DI)
3 = Occupation sensor
–
Comfort /
Economy (DI)
4 = Occupation sensor
–
Comfort /
Protection (DI)
5 = Not used
6 = Electric heater overheat sensor (DI)
7 = Dew point sensor (DI)
0
R/
W
P503
Definition of RT2
0 = NTC temperature sensor
1 = Normally Open (DI)
2 = Normally Closed (DI)
1 = NO
R/
W
P504
Automatic heat/cool changeover level for
cooling
Multiplier: 10
5.0…20.0 °C
15.0 °C
R/
W
P505
2-/4-pipe system: Automatic heat/cool
changeover level for heating
Floor heating system: Floor temperature limit
Multiplier: 10
20.0…40.0 °C
30.0 °C
R/
W
P506
Built-in temperature sensor calibration
Multiplier: 10; Integer (signed)
-
3.0…+3.0 °C
0.0 °C
R/
W
5.9.2
P500/502: 2 = Heat/cool changeover or floor temperature sensor (NTC or DI)
Heat/cool changeover (NTC or DI)
P200 (Application mode) must be set to 3 or 5. Otherwise an error occurs (Err4).
If P501/P503 = 0 = NTC temperature sensor, the controlling mode changes to cooling mode if the temperature on RT1/2
is lower than specified in P504. The controlling mode changes to heating if the temperature on RT1/2 is higher than
specified in P505.
If RT1 and RT2 are not specified as Heat/cool changeover, the controlling mode changes to fan only. If the heat/cool
changeover sensor defined as NTC has a short circuit or open contact, the controlling mode changes to fan only.
Floor temperature sensor (NTC)
P200 (Application mode) must be set to 7 (Floor heating system) and the corresponding P501/P503 = 0 = NTC.
Otherwise, an error occurs (Err4).
If the floor temperature sensor exceeds the floor temperature limit (P505), the heating valve is turned off until the floor
temperature is 2°C lower than the floor temperature limit.
