Siemens MICROMASTER 420 - Page 63

5. SYSTEM PARAMETERS International English
MICROMASTER 420 Operating Instructions 63
6SE6400-5AA00-0BP0
Parameter
Number
Parameter Name
Min
Max
[Default]
Units
♦
♦♦
♦P0003 User
Access Level
♦
♦♦
♦P0004 Setting
♦
♦♦
♦Changeable
♦
♦♦
♦Status
Width of deadband
P0761
Defines width of deadband on analog input.
Please see following diagrams for explanations of use;
Example 1 – 2 to 10V 0 to 50Hz
P0760 Y2 (100%)
P0758 Y1 (0%)
P0757 X1 (2V)
Setpoint (%)
P0759 X2 (10V)
Analogue
input (V)
ASPmax
ASPmin
P0761
(2V)
Th
e above example provides a 2 to 10V, 0 to 50Hz analog input.
P0757 = 2V
P0761 = 2V
P2000 = 50Hz
Example 2 – Center Zero (0 to 10V = - 50 to +50Hz)
P0760 Y2 (100%)
P0758 Y1 (-100%)
P0757 X1 (0%)
Setpoint (%)
P0759 X2 (10V)
Analogue
input (V)
0V
ASPmax
ASPmin
P0761 (0.1V)
The above example provides 0 to 10V, -50Hz to +50Hz with center zero and a “holding
point” 0.2V wide.
P0758 = -100%
P0761 = 0.1 (0.1V either side of center)
P2000 = 50Hz
Note:
Fmin (P1080) should be zero when using center zero setup.
There is no hysteresis at the end of the dead band
0
10
[0]
V
2
8
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