2.4.4 Dead Band Around Zero
In some cases, the reference (in rare cases also the
feedback) should have a dead band around 0 (i.e. to make
sure the machine is stopped when the reference is near 0).
To make the dead band active and to set the amount of
dead band, do the following:
•
Set either the minimum reference value (see
for relevant parameter) or maximum
reference value at 0. In other words, either P1 or
P2 must be on the X-axis in
.
•
Ensure that both points defining the scaling
graph are in the same quadrant.
The size of the dead band is defined by either P1 or P2 as
shown in
.
Resource output
[Hz] or “No unit”
Resource input
[mA]
Quadrant 2
Quadrant 3
Quadrant 1
Quadrant 4
Terminal X high
Low reference/feedback
value
High reference/feedback
value
1
-50
16
50
20
P1
P2
0
130BD446.10
forward
reverse
Terminal low
Illustration 2.21 Size of Dead Band
Product Overview
Design Guide
26
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MG06B402
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