Siemens LME73 - Setting the Minimum Power Control Step (Dead Band) (Parameter 123) in Modulating Mode Via Analog Input Signal Terminal X65

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Building Technologies Basic Documentation LME7... CC1P7105en
11 Multistage or modulating mode with actuator 17.04.2018
11.7 Setting the minimum power control step
(dead band) (parameter 123) in modulating
mode via analog input signal terminal X65
The minimum output control step must be greater than or equal to the percentage
proportion of the maximum resolution of the entire modulation range and,
depending on the actuator’s running time (protection against hunting).
Typical actuator values and settings:
Presettings Parameter
Comment
Low-fire cam
position in °
High-fire cam
position in °
Maximum working
range in °
Actuator running
time in s
Setting value
parameter 123 in %
Typical number of
steps (between
low-fire and high-fire
cam position)
0 90 90 15 2.1 27
Actuator running time at 50 Hz mains frequency
0 90 90 30 1.3 43
0 90 90 60 1.0 55
20 90 90 15 2.1 21
20 90 90 30 1.3 33
20 90 90 60 1.0 43
0 90 90 12.5 2.4 24
Actuator running time at 60 Hz mains frequency
0 90 90 24 1.5 37
0 90 90 50 1.1 51
20 90 90 12.5 2.4 19
20 90 90 24 1.5 29
20 90 90 50 1.1 40
0 135 135 45 1.1 50
Actuator running time at 50 Hz mains frequency
20 135 135 45 1.1 43
0 135 135 38 1.2 47
Actuator running time at 60 Hz mains frequency
20 135 135 38 1.2 40