FC 300 Design Guide
How to Program
" Present Output Frequency
The value of the adjustable frequency drive’s
present output frequency is transferred as a
16-bit word. The value is transferred as w hole
numbers 0 - ± 32767 (±200 % ).
16384 (4000 Hex) corresponds to 100%.
Output frequency has this format:
0-16384 (40 00 Hex)
0-100% (Par. 4-12 Motor
Speed Low Limit -par. 4-14Motor Speed High Lim it).
Example - Status word and current output frequency:
The adjustable frequen cy drive inform s the
master that the current output frequency is
50% of the output frequency range.
Par. 4-12Motor speed low limit =0Hz
Par. 4-14Motor speed high limit =50Hz
Status word = 0F03 Hex.
Output frequency= 2000 Hex => 50% of the
frequency range, corresponding to 25 Hz.
" Example 1: For Controlling the Drive
and Reading Parameters
This telegram reads par. 16-14 Mot
or Current.
Telegram to the adjustable freque
ncy drive:
stx lge adr pke ind pwe, high pwe, low pcd 1 pcd 2 bcc
02 0E 01 64E00 00 00 00 00 00 00 00 00 00 45
All numbers are in hex format.
The res
ponse from the adjustable frequency drive corresponds to the command above but pwe,high
and pwe,low contain the actual value of par. 16-14 multiplied by 100. If the actual output current
is 5.24 A, the value from the a djustab le frequency drive is 52 4.
*
default setting ()display text []value for use in communication via serial communication port
288
MG.33.B
6.22 - V LT is a registered Danfoss trademark
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