Viconics H270 - Manual (Page 3)

3
2 PROPORTIONNAL OUTPUT
Fig.4: Wiring diagram with two analog outputs
1 PROPORTIONNAL AND 1 TRANSMITTER OUTPUT
Fig.5: Wiring diagram with one analog and one transmitter output
APPLICATION EXAMPLE:
Steam humidification system controlled by a 0 to 10 Vdc valve wired to output #1. Remote humidity display using 0 to 5 Vdc signal is wired to
output #2. The humidity sensor is located in the return air duct. A proportional high limit humidity sensor is installed in the supply duct. An
outdoor temperature sensor is installed in the fresh air duct.
Humidistat model number: H270-69-13-10-31
Fig.6: Application example
6 COMMON
TEMP. SENSOR
OUTDOOR
SENSOR
HIGH LIMIT
INPUT
MAIN SENSOR
+10 Vdc
9
10
8
7
OUTPUT #1
TRANSMITTER
0 to 10 Vdc
0 to 5 Vdc
OUTPUT #2
24 Vac
0 to 10 Vdc 4
5
3
24 Vac
2
1
FOR CONTROL
HUMIDITY SENSOR
RED
BLACK
WHITE
DDC SYSTEM
ELECTRONIC MOTOR
or "SCR"
-
+
or METER -
+
6
COMMON
N/A
N/A
INPUT
MAIN SENSOR
+10 Vdc
9
10
7
8
OUTPUT #1
0 to 10 Vdc
OUTPUT #2
24 Vac
0 to 10 Vdc 4
5
3
24 Vac
2
1
FOR CONTROL
HUMIDITY SENSOR
RED
BLACK
WHITE
ELECTRONIC MOTOR
ELECTRONIC MOTOR
or "SCR"
-
+
or "SCR"
-
+