Auber Instruments SYL-2342 Manuale di istruzioni - Pagina 7

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AUBER INSTRUMENTS
5.3 Controlling a 24V valve
1
13 14
6
2
7
3
8
SYL-2342
+
4
9
-
5
10
TC
Figure 8. SYL-2342 or SYL-2342P with thermocouple input. This is a typical
wiring set up for a 24V gas valve, hot water valve, or a contactor with 24V coil
voltage.
5.4 Cooling and heating with the same controller
1
13
14
2
3
SYL-2342
+
4
-
5
TC
Figure 9. A refrigerator connected to SYL-2342 directly.
This is an example for beer fermentation. The refrigerator is driven by the
internal relay of the controller directly. Please note that the internal relay
output (terminals 7 and 8) is not powered by itself. A power supply must be
used to drive the external relay. The refrigerator must consume less current
than the internal relay's maximum rating (7A at 240V AC and 10A at 120V AC).
The bulb (less than 100-300 W) is for heating. The example is setup to have
the heater to turn on when temperature drops to below 60 ° F and turns off at
64 ° F. The refrigerator will turn on when temperature is above 69 ° F and turn
off at 65 ° F.
Set up for the controller
1) Hy = 2.0. Set both hysteresis band for heater and cooler to 2 degree.
2) COOL=9. Set the controller to cooling mode, no alarm suppression,
Fahrenheit temperature unit display.
3) AT = 0. Set the controller main output to on/off control mode for refrigerator
compressor control
4) ALM2 = 62. Set the low limit alarm to 62 ° F. Heater will be on at 60 ° F
(ALM2-Hy) and off at 64 ° F (ALM2+Hy)
5) SV = 67. Refrigerator will be on at 69 ° F (SV + Hy) and off at 65 ° F (SV -
Hy).
5.5 Maintaining a temperature difference using two thermocouples
1
13
14
6
2
7
3
8
SYL-2342
+
+
4
9
-
-
5
10
+
-
Figure 10. SYL-2342 with two thermocouple inputs to measure temperature
difference.
Connect two thermocouples in series with opposite polarity (negative
connected to negative). Leave the two positive connected respectively to the
2021.06
Solenoid valve
S
L
Fuse
N
120VAC
Bulb
6
7
Refrigerator
8
Fuse
9
10
Fuse
L
N
120VAC
input terminals on the controller. The one for lower temperature is connected to
negative input of the TC input. The one for higher temperature is connected to
the positive input.
Set up the controller (assume K type TC is used)
1) Sn = 35. Set the input type to -20mv~20mv. It eliminates the interference of
24VAC
internal cold junction compensation circuit.
2) P-SL = -501 and P-SH = 501. This converts the millivolt units to degree
Celsius. (P-SL = -902 and P-SH = 902 for Fahrenheit). To control a 20ºC
difference, set SV = 20.
Note, P-SL and P-SH are calculated assuming the temperature/voltage relation
of the TC is linear for the application range. We used 20 ºC temperature
differences at 0 ºC for this calculation. Please contact us if you have any
question.
5.6 Controlling the load via external contactor in a 240V system.
1
L
2
N
3
120VAC
+
4
-
5
TC
Figure 11. SYL-2342 or SYL-2342P with an external contactor to control the
heating element in a 240V system.
Copyright © 2021 Auber Instruments Inc. All rights reserved.
No part of this datasheet shall be copied, reproduced, or transmitted in any
way without the prior, written consent of Auber Instruments. Auber Instruments
retains the exclusive rights to all information included in this document.
WWW.AUBERINS.COM
T1
T2
13
14
6
Contactor
C1
C2
240V Coil
7
8
SYL-2342
L1
L2
L1
9
10
L2
Auber Instruments Inc.
5755 North Point Parkway, Suite 99,
Alpharetta, GA 30022
www.auberins.com
Heater
Fuse
L1
L2
240VAC
P7/8