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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.
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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...
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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.
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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.
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