Vector TRA-F12 A Series - P500;501: 6 = Electric Heater Overheat Sensor; P500;502 Digital Input Assignment; P500;502: 3;4 = Occupation Sensor; P500;502: 7 = Dew Point Sensor

TRA-F12x-A
CONFIGURATION
Doc: 70-00-0792B V1.3, 20220830 © Vector Controls GmbH, Switzerland Page 28-34
Subject to change without notice www.vectorcontrols.com
VECTOR
5.9.3 P500/502: 3/4 = Occupation sensor
Occupation sensors are used to change the operating mode, either between comfort/economy or comfort/protection. This
function may be used together with key card switches for hotels or motion detectors for offices. If protection and economy
mode are controlled by an occupation sensor, protection mode has priority.
When an occupation sensor is configured, the operating mode can be set manually to economy or protection with Modbus
or the power button. If the sensor signals protection mode, the operating mode cannot be changed.
5.9.4 P500: 5 = Door switch (DI) and P502: 3 or 4 = Occupation sensor (DI)
As soon as P500 is set to 5 = Door switch and P502 is set to 3 or 4 = Occupation sensor, the device is configured as
“fool-proof presence detection”. If P502 is set to another value than 3 or 4 an error (Err4 and P502) is shown.
The use of a key switch may be avoided by using a door contact and a motion detector. The room will go to Economy
mode (P502 = 3) or Protection mode (P502 = 4) 60 seconds after the door is opened and closed again and if there is no
movement in the room after the door closes (RT2 is evaluated 30 seconds after the door is opened and closed).
If there is movement in the room or the door is opened; the room will go to Comfort mode again and stays in Comfort
mode unless the door is opened and closed again.
The motion detectors should be placed in each room in order to detect the presence of an occupant. Keep the delay of the
motion detector output below 30 seconds.
5.9.5 P500/501: 6 = Electric heater overheat sensor
This sensor is used to prevent overheating of the electric heater. An overheat sensor with digital output (open contact) is
connected to RT1/2. If there is an overheat alarm, the electric heater is shut down immediately. The fan will continue
running at fan speed 1 and ALA4 is shown. After the alarm is cleared and the fan extension time has expired, the
controller will return to normal operation.
5.9.6 P500/502: 7 = Dew point sensor
Dew point sensor are used for cooling applications (chilled ceiling, etc.) to avoid condensation. A dew point sensor with
digital output (open contact) is connected to RT1/2. If there is a condensation alarm the cooling valve is closed and
cooling control output is set to 0 (D1301). In cooling mode the fan speed is set to 1 if there is condensation alarm.
5.9.7 P500/502 digital input assignment
If P501/P503 is in digital input mode the function or mode assignment for open and close contact are listed here:
Configuration of RT1/2 (P500/P502)
Definition of RT1/2 (P501/P503)
Contact open
Contact closed
2 = Heat/cool changeover (NTC or DI)
1 = Normally Open (DI)
Heating
Cooling
2 = Normally Closed (DI)
Cooling
Heating
3 = Occupation sensor – Comfort /
Economy (DI)
1 = Normally Open (DI)
Economy
Comfort
2 = Normally Closed (DI)
Comfort
Economy
4 = Occupation sensor – Comfort /
Protection (DI)
1 = Normally Open (DI)
Protection
Comfort
2 = Normally Closed (DI)
Comfort
Protection
5 = Door switch (DI, in combination with
occupation sensor of other input)
1 = Normally Open (DI)
Door closed
Door open
2 = Normally Closed (DI)
Door open
Door closed
6 = Electric heater overheat alarm (DI)
1 = Normally Open (DI)
No alarm
Overheat alarm
2 = Normally Closed (DI)
Overheat alarm
No alarm
7 = Dew point sensor (DI)
1 = Normally Open (DI)
No alarm
Dew point alarm
2 = Normally Closed (DI)
Dew point alarm
No alarm
Motion detected
No motion detected
Time
< 30 sec
Economy / Protection Mode
Door open
Door closed
60 sec
Comfort Mode
Operating
Mode
Comfort
Mode
For RT1
For RT2
Time