Configuration
7-39
48XX/49XXSHB0399
7.3 Digital frequency coupling
General description of the system
The digital frequency coupling described here enables a digital set-value
transmission and evaluation between a set-value source and one or more
controllers. The transmission path can be used as bar or cascade for:
( Phase-synchronous running
( Speed-synchronous running
( Speed-ratio synchronism or
( Position controls with drift-free standstill
In every controller, the set-value can be evaluated with a factor and output with
a gain at the corresponding digital frequency output.
The digital frequency coupling is a pure digital set-value transmission with all of
its advantages:
( drift-free
( extremely precise
( increased noise immunity
Therefore, three configurations are offered:
( Master, C005 = -52-, -53-
( Slave for digital frequency bar, C005 = -62-, -63-
( Slave for digital frequency cascade, C005 = -72-
Set-value conditioning
In the set-value branch, the speed and phase set-values are processed as
absolute values.
Gearbox factors (C032 and C033)
The evaluation factors C032 and C033 are in the set-value channel of the
corresponding drive (slave). They are used to set the gearbox factor.
Setting range of the factors:
( C032 from -3.2767 to +3.2767
( C033 from +0.0001 to +3.2767.
The quotient is limited to max. 32767.
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