Electrical Connections - Kipp & Zonen CVF4 Instruction Manual

2.5 Electrical connections

VENTILATION UNIT CONNECTION
ANSCHLUSS • RACCORDEMENT • CONEXIÓN
Wire Function
Kabel Funktion
Fil Fonction
Cable Función
Red + Ventilator
1
Rot • Rouge • Rojo + Ventilator
+ Ventilateur
+ Ventilador
Blue + Heater
2
Blau • Bleu • Azul + Heizung
+ Chauffage
+ Calentador
Green Power supply
3
Grün • Vert • Verde Spannungsversorgung
Alimentation
Fuente de alimentación
Yellow 5 V tacho output
4
Gelb • Jaune • Amarillo
Shield Housing
Abschirmung Gehäuse
Protection Boîte
Malla Cubierta
* Connect to ground if radiometer not grounded
Mit Erde verbinden, wenn das Radiometer nicht geerdet ist
Reliez à la terre si le radiomètre n'est pas connecté
Conectar a tierra si el radiómetro no lo está
The CVF4 has a 4 wire cable for connecting the 12 VDC to the ventilator and heater. The ground is common for the ventilator,
heater and the tacho output.
The tacho output (Ut in diagram below, pin 4, yellow wire) provides a 5 Volt signal that gives two pulses per revolution. It can
be connected to a data logger to (remotely) check proper operation of the CVF4. The tacho output uses the same power supply
ground (pin 3, green wire).
The nominal speed is 4400 rpm, resulting in 8800 pulses per minute which equals 146 Hz on the tacho output.
Changes often indicate pollution of the filter (higher frequency), or mechanical problems with ventilator (lower frequency).
If sufficient power is available it is advised to use the heater in combination with the ventilator even in warm climates. The
heater will prevent deposition of dew in the morning.
Connect with
Anschluss an
Relier à
Conectar con
+12 VDC @ 0.4 A
+12 VDC @ 0.5 A
12 VDC ground, tacho ground
Erde
Terre
Tierra
+ Hi
Ground
Erde
Terre
Tierra
+12 Volt
R2
R1
0 Volt
Instruction Manual - CVF4
14
VENTILATOR
R1
R2
Ut
4
1
3
2