Danfoss VLT Midi Drive FC 280 Design Guide

Fault code FC specication
0 Illegal parameter number.
1 Parameter cannot be changed.
2 Upper or lower limit is exceeded.
3 Subindex is corrupted.
4 No array.
5 Wrong data type.
6 Not used.
7 Not used.
9 Description element is not available.
11 No parameter write access.
15 No text available.
17 Not applicable while running.
18 Other errors.
100 –
>100 –
130 No bus access for this parameter.
131 Write to factory set-up is not possible.
132 No LCP access.
252 Unknown viewer.
253 Request is not supported.
254 Unknown attribute.
255 No error.
Table 5.7 Slave Report
5.4.8 Parameter Number (PNU)
Bits 0–11 transfer parameter numbers. The function of the
relevant parameter is dened in the parameter description
in the VLT
®
Midi Drive FC 280 Programming Guide.
5.4.9 Index (IND)
The index is used with the parameter number to read/
write access parameters with an index, for example,
parameter 15-30 Alarm Log: Error Code. The index consists
of 2 bytes; a low byte, and a high byte.
Only the low byte is used as an index.
5.4.10 Parameter Value (PWE)
The parameter value block consists of 2 words (4 bytes),
and the value depends on the dened command (AK). The
master prompts for a parameter value when the PWE block
contains no value. To change a parameter value (write),
write the new value in the PWE block and send from the
master to the slave.
When a slave responds to a parameter request (read
command), the present parameter value in the PWE block
is transferred and returned to the master. If a parameter
contains several data options, for example
parameter 0-01 Language, select the data value by entering
the value in the PWE block. Serial communication is only
capable of reading parameters containing data type 9 (text
string).
Parameter 15-40 FC Type to parameter 15-53 Power Card
Serial Number contain data type 9.
For example, read the unit size and mains voltage range in
parameter 15-40 FC Type. When a text string is transferred
(read), the length of the telegram is variable, and the texts
are of dierent lengths. The telegram length is dened in
the 2
nd
byte of the telegram (LGE). When using text
transfer, the index character indicates whether it is a read
or a write command.
To read a text via the PWE block, set the parameter
command (AK) to F hex. The index character high-byte
must be 4.
5.4.11 Data Types Supported by the
Frequency Converter
Unsigned means that there is no operational sign in the
telegram.
Data types Description
3 Integer 16
4 Integer 32
5 Unsigned 8
6 Unsigned 16
7 Unsigned 32
9 Text string
Table 5.8 Data Types
5.4.12 Conversion
The programming guide contains the descriptions of
attributes of each parameter. Parameter values are
transferred as whole numbers only. Conversion factors are
used to transfer decimals.
Parameter 4-12 Motor Speed Low Limit [Hz] has a conversion
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 multiplied by 0.1. The value
100 is thus perceived as 10.0.
RS485 Installation and Set-...
VLT
®
Midi Drive FC 280
58 Danfoss A/S © 03/2016 All rights reserved. MG07B102
55

Danfoss VLT Midi Drive FC 280 Specifications

General

Brand	Danfoss
Model	VLT Midi Drive FC 280
Category	DC Drives
Language	English