Function block library
7-188
SHB9300CRV EN 2.0
– Sets the output PHINT3-STATUS = LOW.
PHINT3-STATUS
t
PHINT3-OUT
t
+C1151
-C1151
Vorzeichenwechsel am Eingang
Fig. 7-153 Function of PHINT3 with change of sign when C1150 = 2
l
The FB integrates speed or velocity values at PHINT3-IN to a phase (distance).
l
PHINT3-OUT outputs the count of the bipolar integrator.
– A positive value at PHINT3-IN increments the integrator (count is increased).
– A negative value at PHINT3-IN decrements the integrator (count is reduced).
l
If the count exceeds the value of (+)C1151
– the value of C1151 is subtracted from the count
– switches PHINT3-STATUS to for the time of 1 ms.
l
If the count falls below the value of (-) C1151
– the value of C1151 is added to the count,
– switches PHINT3-STATUS to for the time of 1 ms.
7.6.60.4 Scaling of PHINTx-OUT
Mathematic description of PHINTx-OUT:
PHINTx
OUT[inc]
PHINTx
IN[rpm]
ô
t[s]
ô
65536[inc
rev.]
t = integration time
Example:
You want to determine the count of the integrator with a certain speed at the input and a certain
integration time.
l
Given values:
– PHINTx-IN = 1000 rpm
–t=10s
– Start value of the integrator = 0
l
Solution:
– Conversion of PHINTx-IN:
1000 rpm
1000 rev.
60 s
– Calculation of PHINTx-OUT:
PHINTx
OUT
1000 rev.
60 s
ô
10 s
ô
65536 inc
rev.
10922666 inc
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