AUBER INSTRUMENTS
WWW.AUBERINS.COM
2021.05
P7/7
Figure 12c. A wiring example for controlling a proportional valve (0-10Vdc or 2-
10Vdc). One 500 Ohms resistor is required (not included).
b. Parameter settings. Set
inty
= P100,
outy
= 1,
coty
= 0-20 mA or 4-20 mA
depending on your valve,
rd
= 1 (cooling mode),
SV
= 50° F,
AH1
= 54° F, and
ot
= 2 for fast response. Adjust
Hy
(hysteresis band) accordingly. If the input of your
valve is 0-20 mA, 0-5 Vdc or 0-10 Vdc, please set
coty = 0 - 20 mA
.
If the input of
your valve is 4-20 mA, 1-5 Vdc or 2-10 Vdc, please set
coty = 4 - 20 mA
.
11. Error Message and Trouble Shooting
11.1 Display EEEE
This is an input error message. The possible reasons are, the sensor is not
connected correctly; the input setting is wrong type; or the sensor is defective. If
this happens when using thermocouple sensor, you can short terminal 9 and 10
with a copper wire or paper clip. If then the display shows ambient temperature,
the thermocouple is probably defective. If this happens when using the RTD sensor,
check the input sensor type (
Inty
) setting first because most controllers are
shipped with input sensor type set for type K thermocouple. Then check the wiring.
The two red wires should be on terminal 9 and 10. The clear wire should be on
terminal 8.
11.2 No output
When
outy
is set to 1 or 2, the control output is sent to the mA port (pin 6 and 7).
The control output is synchronized with the OUT indicator. The flashing frequency
of the OUT light is an indication of how much mA current is being sent out. When
outy
is set to 3 or 4, the control output is sent through J1 relay. The J1 relay action
is synchronized with the AL1 indicator. When AL1 is on, J1 relay should pull in;
when AL1 is off, J1 relay should drop out. If the control signal and the indicator are
synchronized, please check whether the external device is working properly.
11.3 Poor accuracy
Please make sure calibration is done by immersing the probe in liquid. Comparing
the probe reading with a reference probe in air is not recommended because the
response time of probes can vary a lot. Different probes are designed for different
applications, and they can be quite different in their thermal mass, which will affect
their response time a lot. Some of our sensors have response time more than 10
minutes in the air. When the calibration is done correctly in liquid and the error is
5° F or larger, the most common problem for a thermocouple probe is improper
connection between the thermocouple and the controller. A thermocouple needs
to be connected directly to the controller unless thermocouple connector and
thermocouple extension wire are used. A copper connector, copper wire, or
thermocouple extension wire with wrong polarity connected on the thermocouple
will cause the reading drift more than 5° F.
Auber Instruments Inc.
5755 North Point Parkway, Suite 99,
Alpharetta, GA 30022
www.auberins.com
Email: [email protected]
Tel: 770-569-8420
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