ABB Module DSTD108P 57160001-UH ABB DSTD108P 57160001UH CONNECTION UNIT High reliability

Product Description:

When resistance thermometers are used, a constant current must flow through the measuring resistor in order to create the necessary voltage drop for the evaluation. For this purpose, the basic unit 07 KT 94 provides a constant current sink, which is multiplexed to the 8 analog channels. The following figure shows the connection of Pt100 resistance thermometers in 2-wire configuration.Measuring ranges and with Pt100 as temperature sensor in 3-wire configuration The following figure shows the connection of Pt100 resistance thermometers in 3-wire configuration.The 07 KT 94 unit linearizes the Pt100 characteristic.Temperatures that exceed the measuring range cause the overflow numerical value of +32767. If the measured value is below the range, the underflow numerical value of -32767 is set. In case of a detected open-circuit the numerical value of +32767 is set. If the sensor is short-circuited, the numerical value of -32767 is set.

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Product's Character:

If all of the 8 channels of the group are used as inputs, and if in addition the UP5 terminal is left unconnected, no restrictions exist for the inputs. The input signal voltages then may be within -30 V and +30 V. There is no restriction for the input/output group concerning its safety against reversed polarity.
of the varistor.If the counter is used in the operating modes 1 or 2 (up-counter), the output A 62,00 is only available for the counter. If the output is to use as a normal digital output, it has to
be made sure, that the high-speed counter is not configured to the operating modes 1 or 2 (see also the chapter "High-speed counter").Features of the analog inputs:The 8 analog inputs are not electrically isolated.The resolution of the A/D converter is 12 bits. Analog signals are conducted in shielded cables (seeThe analog inputs can be configured individually in a lot of different operating modes (even as digital inputs). The configuration is performed by setting certain bits in the system constants KW 86,00 to KW 86,07 as follows

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