8545840000 datasheet, PDF - EEWORLD Datasheet

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8545840000: Descriptionconditioner sgnl rail mnt AC/DC; CategoryThe sensor; File Size3MB，58 Pages; ManufacturerWeidmuller; Websitehttp://www.weidmuller.com/; Environmental Compliance

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conditioner sgnl rail mnt AC/DC

8545840000 Parametric

Parameter Name	Attribute value
Datasheets
Analogue Signal Processing
Standard Package	1
Category	Sensors, Transducers
Family	Accessories
Other Names	WAZ2CMAACDC

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Analogue Signal Processing

156

Analogue Signal Processing

2-way-isolation

separates the signals galvanically and decouples the measurement

circuits. In so doing it eliminates potential differences caused by long cable lengths and

common reference points. Furthermore, the galvanic isolation offers protection against

destruction by overvoltage, and against inductive and capacitive interferences.

3-way-isolation

also decouples the supply voltage from the input and output circuits,

and enables the function with only one operating voltage.

The

passive isolator

offers a further elementary advantage; it needs no additional volt-

age supply. The supply to the modules ensues via the input circuit and is the trans-

ferred to the output. This current loop supply is distinguished by very low power con-

sumption.

There are a large number of products available for measuring temperatures. RTD

PT100

signals, in 2-, 3- and 4-wire technology, are converted to standardised 0 – 20

mA, 4 – 20 mA and 0 – 10 V signals.

The modules which can be connected to commercially available

thermocouples

have

cold junction compensation as standard. Furthermore, the modules amplify and linea-

rize the voltage signals from the thermocouple. This guarantees an exact conditioning

of analogue signals by eliminating sources of interference and errors.

Frequency converters

convert frequencies to standard analogue signals. This

enables controllers connected in series to directly process impulse trains when making

speed or rotational speed measurements.

It is inconceivable to think about automation without

analogue-digital-analogue

converters.

To bring together the aforementioned analogue form of describing the envi-

ronment and the customary digital processing, within the framework of process moni-

toring, it is necessary to convert analogue signals into digital signals. Weidmüller offers

modules for the following standard input and output signals: 0...20 mA, 4...20 mA and

0...10 V. 8-bit and 12-bit digital modules are available. All modules have an added input

for making instantaneous measurements.

Current monitoring modules

enable the monitoring of current values up to 60 A in

alternating or direct voltages. Over range or under range values trip the switching out-

put. Modules with analogue outputs enable the continuous monitoring of currents via

connected controls.

Voltage monitoring modules

can be used to monitor direct and alternating voltages.

Voltage fluctuations, resulting from switching operations or network overloads, can be

reliably recognised and reported via the adjustable threshold function.

Modules for

monitoring of revolutions and torque

enable the control of cyclic move-

ments on conveyor belts, ventilators and pumps. The output responds after a set

amount of time, should the expected impulse not be received. The reliable potential-

free relay contact, signalises the interference to the responsible component group.

158

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