Siemens MICROMASTER 440 Operating Instructions Manual page 105

Issue 10/03
Voltage input
> 4.7 kΩ
Fig. 3-29
The ADC channel has several function units (filter, scaling, dead zone) (refer to
Fig. 3-30).
DIP switch
KL
ADC
ADC+
KL
ADC−
Fig. 3-30
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).
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
KL1 10 V
KL2 0 V
KL3 ADC+
A
KL4 ADC−
KL10 ADC+
A
KL11 ADC−
Connection example for ADC voltage / current input
P0756
A
ADC
type type
D
1
0
ADC channel
Current input
0 ...20 mA
D
D
P0753
ADC
scaling
3 Functions
KL1 10 V
KL2 0 V
KL3 ADC+
A
KL4 ADC−
D
KL10 ADC+
A
KL11 ADC−
D
r0754
P1000
P0761
Function
ADC
r0755 Pxxxx
dead zone
r0754
r0722
r0722.x
105