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LX3V-2DAV-BD
User manual
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LX3V-2DAV-BD
1 WECON Technology Co., Ltd.
1. Mounting instruction
Before the installation make sure that the PLC host and the equipment connected to BD module
have been powered off. Please install the BD module in the corresponding position of the PLC, and
lock the two standard screws.
Caution
1) This BD module only support the following firmware versions or later. Users can check the PLC
firmware version in D8001.
LX3VP:25103;
LX3VE: 25201;
LX3V-A2:25014;
LX3V-A1: 22006;
When mounting module to PLC, all the lights are blinking after power ON PLC please purchase
new PLC.
2) When output current, make sure that the load resistance should be less than 500Ω; otherwise
the output will be lower.
3) Please fixed BD module on the PLC, poor contact may lead to failure.
4) BD module and top cover of PLC’s tightening torque is 0.3 ~ 0.6 N.m.
Warning
Make sure to power off the PLC before mounting or removing the BD module and put the cover in
right place.
2. Special feature
1) LX3V-2DAV-BD module equips with 2 channels analog output. This module will be mounted in
the PLC.
2) The output voltage of LX3V-2DAV-BD module between -10V to 10V, and the digital value will be
saved in special system address, but the numerical relationship between input and output value
cannot be changed.
Table 2-1
Expansion port 1 (far away from PLC light)
Address
Description
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LX3V-2DAV-BD
2 WECON Technology Co., Ltd.
M8112
The flag of switching output mode in CH1
OFF: Voltage output mode (-10V~10V, -2000~2000)
ON:
Disabl
ed
M8113
The flag of switching output mode in CH2
OFF: Voltage output mode (-10V~10V, -2000~2000)
D8112
The digital value of channel 1; (-10V~10V, -2000~2000)
D8113
The digital value of channel 2; (-10V~10V, -2000~2000)
Expansion port 2 (near PLC light)
Address
Description
M8116
The flag of switching output mode in CH1
OFF: Voltage output mode (-10V~10V, -2000~2000)
ON:
Disable
d
M8117
The flag of switching output mode in CH2
OFF: Voltage out mode (-10V~10V, -2000~2000)
D8116
The digital value of channel 1; (-10V~10V, -2000~2000)
D8117
The digital value of channel 2; (-10V~10V, -2000~2000)
3. Dimension
Table 3-1
LED lights indicating
1) LED1: ON when power ON.
2) LED2: flashes when communications.
3) LED3 (AD 1): On indicates enable, OFF indicates disable, flicker indicates exceeding the
measurement range.
4) LED4 (AD 2): On indicates enable, OFF indicates disable, flicker indicates exceeding the
measurement range.
If the BD module is plugged into the old firmware version when on the host, all LEDs will be flashing.
Out-2DAV Output voltage range: -10V~10V
Vo1+
Anode of the channel 1 voltage output
Vo1-
Cathode of the channel 1 voltage output
•
No connection
Vo2+
Cathode of the channel 2 voltage output
Vo2-
Cathode of the channel 2 voltage output
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LX3V-2DAV-BD
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4. Specifications
1) Please refer to the LX3V user manual for the general specification of LX3V-2DAV-BD.
2) LX3V-2DAV-BD is powered supply by LX3V main unit.
Table 4-1
Specification
Item
Voltage output
Input range
DC-10V~10V (the external load resistance is no less than 2KΩ)
Digital output
12 bit binary
Resolution
5mV[10V default scope 1/2000]
Precision
Full scale ±1%
A/D conversion
time
1 scan time（The analog digital conversion is completed by the
END order）
Characteristic
Insulation
No insulation in each PLC channel
Occupied points
Zero point
5. Wire
Warning
Make sure cut off the electricity before installation/disassembly, to prevent electric shock or
product damages.
Caution
1) Please keep the signal cable from the high-voltage cable at lease 100mm.
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LX3V-2DAV-BD
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2) The shielding wire cable shall be grounded. But their grounding point can be the same with
high-voltage lines.
3) Welding is forbidden at the end of any cable. Ensure the number of connected cables does not
exceed the designed number of the unit.
4) Never connect cable with forbidden size.
5) Fix the cable, so that the stress does not act on the terminal board or the cable connection
area.
6) The screwing torque of the terminal is from 0.5 to 0.6N.m. Fasten tight to prevent malfunction.
7) Keep the redundant terminals empty.
5.1 Suitable cable
Use AWG25-16 to connect the output equipment
The maximal screwing torque is from 0.5 to 0.6N.m
The use of different types of cables might cause poor contact between the terminals. It is better to
use pressed terminals.
Table 5-1
Line type
Cross sectional
area(mm2)
End-of-pipe treatment
AWG26
0.1288
Stranded cable: stripped jacket, rub
Conductor, then connect the cable.
Single-core cable: stripped jacket,
Then connect the cable.
......
......
AWG16
1.309
5.2 Output mode
Figure 5-1
6. Examples
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The output analog of all channels（-10V~10V）is stored inside the data memory（D8112, D8113）
in the form of data. Values will be automatically stored when the “END” order is sent out. The value
is calculated by the designated analog data conversion characteristics of the special auxiliary relays
M8112 and M8113.
6.1 Basic Program Examples
Caution
1) Start M8112 and M8113; designate the analog data conversion characteristics of CH1 and CH2.
2) After execution of analog data conversion, do not change the values of D8112 or D8113
through operator program, programming tools or graphic operating terminal.
3) The following program will be set into voltage output mode, and the data of D0 and D2 will be
converted into analog value.
If the data are not stored into D0 or D2，then D8112, D8113 can be simultaneously used on setting
values and other orders, such as timer/counter.
6.2. Examples of Applications
Since the LX3V-2DAV-BD does not have offset and gain functions, if it needs for the values out of
the standard specifications, Additional programming orders will be needed to multiply or divide the
converted value.
Caution
1) Since the use of additional programming orders, the converted precision and resolution of the
analog value are different with the specifications;
2) The original range of the analog output does not change;
Voltage Output Mode
1) Under the voltage output mode, the 2DAV will convert the figures -2000~2000 into analog
output -10V~10V. If the figure data used in the application is -A~A, then the range must be
Set CH1, CH2 into voltage output mode
(-10V~10V)
Set the digital value of D0 into analog value
Set the digital value of D2 into analog value
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LX3V-2DAV-BD
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converted into -2000~2000, as is shown in the following program examples. The figures
converted from the analog values are stored in D8112;
2) Since the data range is converted from -A~A into -2000~2000，therefore the precision of the
analog output is no longer just 5mV;
Figure 6-1
If the digital range used in D0 is 0~A, then the data used in the user’s applications are：
D8114=2000×D0÷A
=2000×D0÷10000 (when A=10000)
= D0÷5
Version: V1.0.1
Date: Feb 2018
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