3.11.3 Bus Speed Reference Value
Speed reference value is transmitted to the frequency
converter in a relative value in %. The value is transmitted
in the form of a 16-bit word; in integers (0–32767) the
value 16384 (4000 hex) corresponds to 100%. Negative
figures are formatted by 2’s complement. The actual
output frequency (MAV) is scaled in the same way as the
bus reference.
Actual output
frequency
STW
Follower-slave
Speed reference
CTW
Master-slave
16bit
130BA276.11
Illustration 3.22 Actual Output Frequency (MAV)
The reference and MAV are scaled as follows:
100%
0%
(0hex)
(4000hex)
Forward
Par.3-02
Min reference
Par.3-03
Max reference
195NA490.10
Illustration 3.23 Reference
-100%
100%
0%
(C000hex)
(0hex)
(4000hex)
Reverse
Forward
0
Par.3-03
Max reference
Par.3-03
Max reference
195NA489.10
Illustration 3.24 MAV when
Parameter 1-00 Configuration Mode
is set to
[0] Open Loop
-100%
100%
0%
(C000hex)
(0hex)
(4000hex)
Reverse
Forward
0
Par.4-14
Motor Speed High Limit
Par.4-14
Motor Speed High Limit
195NA491.10
Illustration 3.25 MAV when
is set to
[3] Closed Loop
RS485 Installation and Set-...
Programming Guide
MG03N202
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Summary of Contents for VLT DriveMotor FCP 106
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