Danfoss FC 101 Design Guide

Bit 15, Timer OK/limit exceeded
Bit 15=’0’: The timers for motor thermal protection and
thermal protection are not exceeded 100%.
Bit 15=’1’: One of the timers exceeds 100%.
7.11.3 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 means of 2’s complement. The
Actual Output frequency (MAV) is scaled in the same way
as the bus reference.
Actual output
freq.
STW
Follower-master
Speed ref.CTW
Master-follower
16bit
130BA276.11
Illustration 7.15 Actual Output Frequency (MAV)
The reference and MAV are scaled as follows:
Reverse Forward
Par.3-00 set to
(1) -max- +max
Max reference Max reference
Par.3-00 set to
(0) min-max
Max reference
Forward
Min reference
100%
(4000hex)
-100%
(C000hex)
0%
(0hex)
Par.3-03 0 Par.3-03
Par.3-03
(4000hex)(0hex)
0% 100%
Par.3-02
130BA277.10
Illustration 7.16 Reference and MAV
RS-485 Installation and Set...
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HVAC Basic Drive FC 101 Design Guide
MG18C502 - Rev. 2013-09-06 97
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Danfoss FC 101 Specifications

General

Model	FC 101
Manufacturer	Danfoss
Protection Class	IP20
Relative Humidity	95% (non-condensing)
Communication Interface	RS-485