Present Output Frequency; Example 1: For Controlling The Drive And Reading Parameters - Danfoss VLT AutomationDrive FC 300 Design Manual

FC 300 Design Guide

Present Output Frequency

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The value of the frequency converter's present
output frequency is transferred as a 16-bit
word. The value is transferred as whole
numbers 0 - ±32767 (±200%).
16384 (4000 Hex) corresponds to 100%.
Output frequency has this format:
0-16384 (4000 Hex)
Speed Low Limit - par. 4-14 Motor Speed High Limit).
Example - Status word and current output frequency:
The frequency converter informs the master
that the current output frequency is 50% of
the output frequency range.
Par. 4-12Motor Speed Low Limit = 0 Hz
Par. 4-14Motor Speed High Limit = 50 Hz
Status word = 0F03 Hex.
Output frequency= 2000 Hex => 50% of the
frequency range, corresponding to 25 Hz.
Example 1: For Controlling the Drive
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and Reading Parameters
This telegram reads par. 16-14 Motor Current.
Telegram to the frequency converter:
stx lge adr
02 0E 01
All numbers are in hex format.
The response from the frequency converter corresponds to the command above but pwe,high
and pwe,low contains the actual value of par. 16-14 multiplied by 100. If the actual output
current is 5.24 A, the value from the frequency converter is 524.
Response from the frequency converter:
stx lge adr
02 0E 01
All numbers are in hex format.
default setting ( )
*
254
How to Programme
0-100% (Par. 4-12 Motor
pke ind
6 4E 00 00
pke ind
6 4E 00 00
display text [ ] value for use in communication via serial communication port
MG.33.B4.02 - VLT is a registered Danfoss trademark
pwe, high pwe, low
00 00 00 00
pwe, high pwe, low
00 00 02 0C
pcd 1 pcd 2
00 00 00 00
pcd 1 pcd 2
06 07 00 00
bcc
45
bcc
4A