AUBER INSTRUMENTS
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2021.05
P6/7
b. Parameter settings. These are the parameters that need to be changed from
the initial value:
outy
= 3 for PID mode with J1 relay output;
ot
= 20 to avoid
switching the contactor too often; for target temperature set
SV
= 1200° F.
10.2
A 24 V AC solenoid valve is controlled by J1 relay in on/off mode. The valve
should be on till the temperature reaches 200° F; once the temperature is above
200° F, it should be shut off. When the temperature drops below 195° F, it should
be turned on again. The power source is 120 V AC. The temperature sensor is a
type K thermocouple.
a. Wiring diagram.
6
7
8
9
10
11
12
13
14
1
2
3
4
5
+ -
K type TC
L
N
S
Solenoid valve
24VAC
120VAC
Fuse
Figure 11. A typical wiring set up for a 24 V AC gas valve, hot water valve, or a
contactor with 24 V AC coil voltage
b. Parameter settings. These are the parameters that need to be changed from
the initial values:
outy
= 4 for using J1 relay in on/off mode;
Hy
= 5;
SV
= 200° F.
Note: if this is to control a contactor with 24 V coil, PID mode can be used. Then
the setting should be the same as example 10.1 except the SV value.
10.3 Drive a proportional control valve directly in cooling mode.
In a cooling system where the controller is connected to a linear control valve to
control the flow of the coolant. The target temperature is SV = 50° F. An PT100
RTD sensor is used to measure the temperature. A 120 V buzzer is connected to
the J1 relay which works as an absolute high temperature alarm, which should be
triggered at 54° F.
a. Wiring diagram
6
7
8
9
10
11
12
13
14
1
2
3
4
5
L
N
S
Linear control valve
0-20mA or 4-20mA
120VAC
Fuse
RTD
R
R
W
Alarm
120V buzzer
+
-
Figure 12a. A wiring example for controlling a proportional valve (0-20mA or 4-
20mA).
6
7
8
9
10
11
12
13
14
1
2
3
4
5
L
N
S
Linear control valve
0-5Vdc or 1-5Vdc
120VAC
Fuse
RTD
R
R
W
Alarm
120V buzzer
+
-
250 Ohms
Resistor
Figure 12b. A wiring example for controlling a proportional valve (0-5Vdc or 1-
5Vdc). One 250 Ohms resistor is required (not included).
6
7
8
9
10
11
12
13
14
1
2
3
4
5
L
N
S
Linear control valve
0-10Vdc or 2-10Vdc
120VAC
Fuse
RTD
R
R
W
Alarm
120V buzzer
+
-
500 Ohms
Resistor
