Related Manuals for Wecon LX3V-4TC
Summary of Contents for Wecon LX3V-4TC
- Page 1 LX3V-4TC User manual Website: http://www.we-con.com.cn/en Technical Support: support@we-con.com.cn Skype: fcwkkj Phone: 86-591-87868869 QQ: 1043098682 Technical forum: http://wecon.freeforums.net/...
-
Page 2: External Dimensions
Fahrenheit (°F) can be read. Reading resolution is 0.2°C/0.72°F of Type K and 0.3°C/0.54°F of Type J. All data transfers and parameter settings are adjusted via software control of the LX3V-4TC; by use of the TO/FROM applied instructions in the PLC. -
Page 3: Terminal Layouts
2) If there is excessive electrical noise, connect the FG terminal to the ground terminal on the unit. 3) Connect the ground terminals of the LX3V-4TC module and the PLC. Use grounding on the PLC. 4) The 24V DC built-in supply of the PLC may be used as the power supply. -
Page 4: Power Supply Specification
Overall accuracy Freezing point of pure water 0°C / 32°F Conversion speed (240ms ± 2%) × 4 channels (unused channels are not converted) Note: Earth-tipped thermocouples are not suitable for use with this module. Analog input WECON Technology CO., LTD. -
Page 5: Buffer Memory
*#17→ #20 CH1 to CH4 Present temperature in 0.1°F units *#21→ #27 Reserved *#28 Digital range error latch Error status Identification code K2030 Software version The LX3V-4TC module communicates with the PLC via buffer memories. WECON Technology CO., LTD. - Page 6 BFM #29 b10 (digital range error) is used to judge whether the measured temperature is within the unit’s range or not. BFM #28 latches the error status of each channel and can be used to check for thermocouple WECON Technology CO., LTD.
- Page 7 Selected number of averaged Averaging is normal (between 1 b11: Averaging error results is outside the available to 256) range. See BFM#1 to #4 b12 to b15: Reserved Reserved Reserved 3) Identification Code Buffer Memory BFM #30 WECON Technology CO., LTD.
-
Page 8: System Block Diagram
6. Example In the program shown below, the LX3V-4TC occupies the position of special block number 2 (that is the third closest block to the PLC). A Type K thermocouple is used on CH1 and a Type J on CH2. CH3 and CH4 are not used. - Page 9 This step provides optional monitoring of the LX3V-4TC Error Buffer Memory (#29). If there is an Error on the LX3V-4TC, bit b0 of BFM #29 will be set on. This can be read by this program step, and output as a bit device in the PLC (Y010 in this example). Additional Error devices can be output in a similar manner, e.g.
-
Page 10: Preliminary Checks
CH2, to take the average reading of four samples. The "FROM" instruction reads the average temperatures (BFM #5 to #8) for input channels CH1 and CH2 of the LX3V-4TC. If direct temperature readings are required BFM #9 and #10 should be read instead, e.g. -
Page 11: Emc Considerations
8. EMC considerations Electromagnetic compatibility or EMC must be considered before using the LX3V-4TC. WECON recommends that the thermocouple sensors used, should be fitted with a form of seild or screening as protection against EMC noise. If some form of cable protection is used, the “Shield” must be terminated at the terminals as shown in chapter 3. - Page 12 LX3V-4TC cables away from potential noise sources. Additionally it is recommended that signal averaging is used as this will reduce the effects of random noise “spikes” Version: V1.1.0 Date: Mar 2018 WECON Technology CO., LTD.
Need help?
Do you have a question about the LX3V-4TC and is the answer not in the manual?
Questions and answers