ABB Module XN05 XN 05 ABB XN05XN05 SIMATIC Excellent Working Condition

ABB Module XN05 XN 05 ABB XN05XN05 SIMATIC Excellent Working Condition

Product Description:

The technical specifications of the inputs are the same with the other digital inputs, but with the following
exception: Caused by the direct electrical connection with the output, the varistor for demagnetization of inductive loads (see figure above) is also in effect at the input. Therefore, the voltage difference between UP5 and the input signal must not be greater than the limit voltage of the varistor.The limit voltage of the varistor is ca. 36 V. This means,that if UP5 = 24 V, the input signal voltage must be between -12 V and +30 V. If UP5 = 30 V, the input voltage has to be within -6 V and +30 V.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

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Product's Character:

It has to be taken into consideration, that in this application the M terminal of the basic unit is the reference potential. AGND1 is not dimensioned for carrying the sum of the sensor currents.Input currents which exceed the measuring range cause an overflow error message. If the measured value is below
the range, an underflow error message is generated. The input impedance is ca. 330 W. The current input has a self-protecting mechanism. If the input current gets too high, the shunt is switched off and the value for range overflow is generated. About every second, the unit tries to switch on the shunt again. In this way the correct measurement will succeed after the current has reached a normal value again. The trigger of the self-protecting mechanism is displayed by the red LED Ovl as long as the overload is present. In the PLC system an error message is then stored

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