Baumuller b maXX BM3000 - Two-Level Controller with Absolute Thresholds

Description of the Software Modules and Parameters
Parameter manual b maXX BM3000
Document no.: 5.12001.07
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of 820
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4.7.5.2 Two-level controller with absolute thresholds
This operation mode is the classical application of two-level controllers.
Figure 167: Two-level-controller with absolute thresholds
The following is valid for the two-level controller with absolute thresholds:
m Both parameters, lower threshold and upper threshold determine the hysteresis. The
lower switching threshold always must be smaller than the upper switching threshold -
the controller internally does not check the ratio of these values.
m The two-level controller with absolute thresholds is activated by bit 0 = 1 in parameter
Mode
Z152.1–.
m The two-level controller switches off, if the following is valid: 
Two-level controller input  Two-level controller upper switching threshold
m The two-level controller switches on, if the following is valid: 
Two-level controller input  Two-level controller lower switching threshold
Usage e. g. for temperature monitoring, speed monitoring a. s. o.
Figure 168: Two-level-controller with absolute thresholds
0
1
5000_0204_rev01_int.cdr
151.3
151.5
151.6
151.2
151.1
Status word 3,
bit 0
Lower
absolute threshold
Upper
absolute threshold
Absolute value
mode, bit 2
Source number
2-point-controller
input
Absolute threshold
t
h(t)
y
t
5000_0206_rev01_int.cdr
Lower threshold
Upper threshold