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TW-DA Digital to
Analogue Converter.

Features.

    
Programmable V or mA Outputs.
    
Rangeable from 2 to 6 Digital Inputs
    
Bi-Polar Digital Inputs.
    
Isolated Input to Output 1600V.
    
Low Cost.
    
Easy to Install.
    
Compact DIN Rail Mount Enclosure.
    
Reverse Polarity Protection.
    
Adjustable Span & Zero.

Description.

The TW-DA is designed primarily for low cost digital to analogue conversions for PLCs, controllers, etc. Digital inputs
are converted in binary to analogue V or mA outputs.

Ordering Information.

TW-DA-X
TW-DA-
-
D AO
N
u
m
b
r e
O
2
3
4
5
6

Ordering Examples.

TW-DA-6-A
TW-DA; 6 Digital Inputs; 4~20mA Output.
TW-DA-2-D
TW-DA; 2 Digital Inputs; 0~10V Output.
Quality Assurance Programme.
The modern technology and strict procedures of the ISO9001 Quality Assurance Programme applied during design,
development, production and final inspection grant the long term reliability of the instrument.
Standard Unit, 4 Digital Inputs, 4~20mA Output.
Special Range Calibration.
N I
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t i g
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D
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D
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D
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D
A
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2
4
~
2
0
3
0
~
2
0
4
2
~
1
5
0
~
1
6
13.07-1
Isolated Parallel Digital
Input to Three Wire V or mA
Analogue Output Converter.
O
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A
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m
A
B
0
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D
TECHNOLOGY
& QUALITY
A
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W
A
E
Z495

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Summary of Contents for Intech TW-DA

  • Page 1      Adjustable Span & Zero. Z495 Description. The TW-DA is designed primarily for low cost digital to analogue conversions for PLCs, controllers, etc. Digital inputs are converted in binary to analogue V or mA outputs. Ordering Information. TW-DA-X Standard Unit, 4 Digital Inputs, 4~20mA Output.
  • Page 2 Note 4. The same power supply can be used to power up both the input and output of the TW-DA. Note that this will however void the isolation between input and output. Intech INSTRUMENTS LTD 13.07-2...
  • Page 3 TW-DA PCB Layout - Location of H1 and H2 for Programming. OUTPUT CALIBRATED 4~20mA 0~10V 0~20mA 2~10V DIGITAL INPUTS TW-DA Rev 0 TW-DA Programming. Selecting the Analogue Output. Refer to the picture above for the location of the Headers on the PCB.
  • Page 4 TW-DA, and ensure that this agrees with the level being indicated by the PLC or indicator, etc., that the TW-DA is connected to. Adjust for any difference using the Zero & Span Pots in the top of the TW-DA enclosure with a small screwdriver, until the two levels agree.

Table of Contents