Danfoss VLT AutomationDrive FC 300 User Manual

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
7.3.12
Conversion
The various attributes of each parameter are displayed in
the section Factory Settings. Parameter values are
transferred as whole numbers only. Conversion factors are
therefore used to transfer decimals.
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.
Examples:
0s⇒conversion index 0
0.00s⇒conversion index -2
0ms⇒ conversion index -3
0.00ms⇒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
7.3.13
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⇒ slave Control
word)
Reference-value
Control telegram (slave ⇒ master) Status
word
Present output
frequency
Table 7.9
7.4 Examples
7.4.1 Writing a Parameter Value
Change 4-14 Motor Speed High Limit [Hz] to 100 Hz.
Write the data in EEPROM.
PKE = E19E Hex - Write single word in 4-14 Motor Speed
High Limit [Hz]
IND = 0000 Hex
PWEHIGH = 0000 Hex
PWELOW = 03E8 Hex - Data value 1000, corresponding to
100 Hz, see 7.3.12 Conversion.
The telegram will look like this:
E19E H
PKE IND PWE
high
PWE
low
0000 H 0000 H 03E8 H
130BA092.10
Illustration 7.11
NOTE
4-14 Motor Speed High Limit [Hz] is a single word, and the
parameter command for write in EEPROM is “E”. 4-14 Motor
Speed High Limit [Hz] is 19E in hexadecimal.
The response from the slave to the master will be:
119E H
PKE
IND
PWE
high
PWE
low
0000 H 0000 H 03E8 H
130BA093.10
Illustration 7.12
7.4.2 Reading a Parameter Value
Read the value in 3-41 Ramp 1 Ramp Up Time
RS-485 Installation and Set... VLT Automation Low Harmonic Drive Operating Instructions
MG34O202 - VLT
®
is a registered Danfoss trademark 137
7 7

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English