7.4.12. Conversion
The various attributes of each parameter are
displayed in the section Factory Settings. Pa-
rameter values are transferred as whole num-
bers only. Conversion factors are therefore
used to transfer decimals.
Par. 4-12
Motor Speed, Low Limit
has a con-
version factor of 0.1.
To preset the minimum frequency to 10 Hz,
transfer the value 100. A conversion factor of
0.1 means that the value transferred is multi-
plied by 0.1. The value 100 is thus perceived
as 10.0.
Conversion table
Conversion index Conversion factor
74
0.1
2
100
1
10
0
1
-1
0.1
-2
0.01
-3
0.001
-4
0.0001
-5
0.00001
7.4.13. Process Words (PCD)
The block of process words is divided into two blocks of 16 bits, which always occur in the defined
sequence.
PCD 1
PCD 2
Control telegram (master
⇒
Control word slave)
Reference-value
Control telegram (slave
⇒
master) Status word
Present outp. frequency
7. RS-485 Installation and Set-up
VLT
®
HVAC Drive Design Guide
132
MG.11.B2.02 - VLT
®
is a registered Danfoss trademark
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