Specifications

ID-40 Drive Type to ID-53 Power Card Serial Number contain
data type 9.
For example, read the unit size and mains voltage range in
ID-40 Drive Type. When a text string is transferred (read),
the length of the telegram is variable, and the texts are of
different lengths. The length is defined in the second 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.”
Some parameters contain text that can be written via the
serial bus. To write a text via the PWE block, set the
parameter command (AK) to ’F’ Hex. The index characters
high-byte must be “5.”
PWE
high
PWE
low
Read text
Write text
130BA275.10
PKEIND
Fx xx 04 00
Fx xx 05 00
Illustration 7.11 Read and Write Text
7.4.11 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
10 Byte string
13 Time difference
33 Reserved
35 Bit sequence
Table 7.7 Supported Data Types
7.4.12 Conversion
Parameter values are transferred as whole numbers only.
Conversion factors are used to transfer decimals.
F-16 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.
Examples:
0 s --> conversion index 0
0.00 s --> conversion index -2
0 ms --> conversion index -3
0.00 ms --> conversion index -5
Conversion index Conversion factor
100
75
74
67
6 1000000
5 100000
4 10000
3 1000
2 100
1 10
0 1
-1 0.1
-2 0.01
-3 0.001
-4 0.0001
-5 0.00001
-6 0.000001
-7 0.0000001
Table 7.8 Conversion Table
7.4.13 Process Words (PCD)
The block of process words is divided into 2 blocks of 16
bits, which always occur in the defined sequence.
PCD 1 PCD 2
Control (master⇒ slave control word)
Reference-value
Control (slave ⇒ master) status word
Present output
frequency
Table 7.9 Process Words
7.5 Examples
7.5.1 Writing a Parameter Value
Change F-15 Motor Speed High Limit [Hz] to 100 Hz.
Write the data in EEPROM.
PKE = E19E Hex - Write single word in F-15 Motor Speed
High Limit [Hz]
IND = 0000 Hex
PWEHIGH = 0000 Hex
Installation and Set-up VLT® HVAC Drive FC 102 Design Guide
168 MG16C102 - Rev. 2013-08-20
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