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LX3V-8EX/16EX

Last modified by Jim on 2022/12/15 14:00

This manual is applied to LX3V-8EX and LX3V-16EX digital input expansion modules.

1 Naming rule

Naming rule of LX3V I/O input expansion module:

image-20220704140755-1.png

  1. WECON PLC;
  2. Main module;
  3. The number of input points
  4. Product type: E means expansion;
  5. Expansion input(X)

2 Dimensions 

                                      image-20220704141033-9.png              image-20220704141040-10.png

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  1. Extension cable
  2. Input indicator light of each channel
  3. LINK: Communication indicator between PLC and expansion module
  4. Expansion module name
  5. Digital signal output terminal
  6. Extension module interface
  7. DIN rail mounting slot
  8. DIN rail hook
  9. Mounting holes (φ4.5)
NameDescriptionStatusEvent status
LINKCommunication indicator between PLC and expansion moduleFlashesNormal data transmission(normal communication)
OFFData transmission is abnormal, stopped, or failed
ONSoftware is abnormal or hardware is faulty

✎Note: Except different I/O input points, LX3V-8EX and LX3V-16EX have the same dimensions and the same other functions.

Crimp terminals

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  1. Please use crimp terminals as indicated on the graph.
  2. The tightening torque should be applied 5 to 8 Kg.cm.
  3. Other terminals should be empty but only wiring terminals mention in this manual.

3 Output specification

ItemDC input
ModelLX3V-8EX or LX3V-16EX
Output circuit

image-20220704140755-4.png

Input signal voltageDC ± 24V ± 10% *1
Input signal current5mA/ DC 24V
Input ON currentMore than 3.5mA
Input OFF currentLess than 1.5mA
Input response timeAbout 10ms
X0 to X7 built-in digital filter, setting time 0 ~ 60ms
Input signalContactor input or NPN or PNP
Circuit insulationOptocoupler insulation
LEDLights when input ON

4 Instructions

The I/O input points on the module are named from the next X point, using the points on the host as endpoints. For example:

  1. If the host is LX3V-1212MR-A and there are 12 input points (X0 to X7, X10 to X13).
  2. If you expand an LX3V-16EX module on the host, the X points defined in the module on the host are X20 to X27 and X30 to X37. 
  3. If you expand multiple I/O input point modules on the host, the I/Os on the module will be named in the same order.

✎Note: When adding IO expansion modules to the host, in principle, the number of all input points X must not exceed 256 points. When adding IO expansion modules to the host, if the host needs to connect multiple IO modules, it is recommended to add a separate power supply board to the module for power supply.

5 Program

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As shown in the example above, it is LX3V-3624MT with two LX3V-16EX modules and one LX3V-4DA module. The host has 36 input points X: X0 to X7, X10 to X17, X20 to X27. X30 to X37 and X40 to X43. The input point in the module ① called by host are X50 to X57 and X60 to X67, and the input points in the module ③ called by host are X70 to X77 and X100 to X107.

image-20220704141313-12.png

As shown in the example above, it is LX3V-3624MT with one LX3V-16EX and two LX3V-4DA modules. The host has 36 input points X: X0 to X7, X10 to X17, X20 to X27, X30 to X37 and X40 to X43. The input point in the module ③ called by host are X50 to X57 and X60 to X67.