Issue 10/06 3 Functions
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
141
Voltage input
A
D
KL1 10 V
KL2 0 V
KL4 ADC−
KL3 ADC+
> 4.7 kΩ
Current input
A
D
KL1 10 V
KL2 0 V
KL4 ADC−
KL3 ADC+
A
D
KL11 ADC−
KL10 ADC+
A
D
KL11 ADC−
KL10 ADC+
0 ...20 mA
Fig. 3-32 Connection example for ADC voltage / current input
The ADC channel has several function units (filter, scaling, dead zone) (refer to
Fig. 3-33).
KL
KL
DIP switch
A
D
ADC
type
ADC
scaling
P0757
P0758
P0759
P0760
ADC
dead zone
r0755 Pxxxx
r0752
Function
P1000
ADC?
ADC+
r0754
r0722
r0722.x
P0761
P0753
P0756
0
1
ADC
type
Fig. 3-33 ADC channel
NOTE
When the filter time constant P0753 (ADC-PT1) is increased, this smooths the
ADC input signal therefore reducing the ripple. When this function is used within a
control loop, this smoothing has a negative impact on the control behavior and
immunity to noise (the dynamic performance deteriorates).
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