Siemens MICROMASTER 420 - Manual (Page 75)

Issue 07/04 3 Functions
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0 75
3.5.5.6 Analog input (ADC)
P0757 =... Value x1 of ADC scaling
P0758 =... Value y1 of ADC scaling
This parameter represents the
value of x1 as a % of P2000
(reference frequency).
P0759 =... Value x2 of ADC scaling
P0760 =...
Value y2 of ADC scaling
This parameter represents the
value of x2 as a % of P2000
(reference frequency).
P0761 =... Width of ADC deadband
Defines width of deadband on
analog input.
max
100 %
10 V
V
x
100%
%
P0760
P0758
P0759
P0761 > 0
0 < P0758 < P0760
|| 0 > P0758 > P0760
min
P0757
P0761
P0757 = P0761
4000 h
KL4
KL3 A
D
ADC
scaling
P0
75
7
P0
75
8
P0
75
9
P0
76
0
ADC
dead
zone
r0752
r0754
r0722
r0722.3
P0761 P0753
0
1
1.7 V
3.9 V
KL1
+10 V
P1000 = 2
P0704 = x
Function
Setpoint
ADC channel
ADC
type
P0756
3.5.5.7 Analog output (DAC)
P0771 =... CI: DAC
Defines function of the 0 - 20 mA analog output.
P0773 =... Smooth time DAC
Defines smoothing time [ms] for analog output signal. This parameter enables smoothing
for DAC using a PT1 filter.
P0777 =... Value x1 of DAC scaling
P0778 =...
Value y1 of DAC scaling
P0779 =... Value x2 of DAC scaling
P0780 =...
Value y2 of DAC scaling
P0781 =... Width of DAC deadband
Sets width of deadband in [mA]
for analog output.
20
P0780
y
2
P0778
y
1
P0777
x
1
P0779
x
2
100 %
mA
P0781
%
DAC
scaling
P0
77
7
P0
78
8
P0
77
9
P0
78
0
DAC
dead
zone
r0774
P0781 P0773
DAC channel
Function
xxx
r0xxx P0771
D
A
P0771 = xxx
0 V
0.0 %
10 V
100.0 %
0 V
21
2 ms
0.0 %
0
100.0 %
20
0