Danfoss VLT PROFIBUS DP MCA 101 User Manual

5.4.2 Size Attribute
Find the size index and the conversion index for each
parameter from the parameter list in the respective
operating instructions. See also size and conversion indices
in Table 5.18.
Physical
quantity
Size
index
SI unit name SI unit
symbol
Conver-
sion
index
Conver-
sion
factor
0 No dimension
Time 4
Second s 0 1
-1 0.1
-2 0.01
Millisecond ms -3 0.001
Minute min 70 60
Hour h 74 3600
Day d 77 86400
Energy 8
Watt hour Wh 0 1
Kilowatt hour kWh 3 1000
Megawatt hour MWh 6
10
6
Power 9
Milliwatt mW -3 0.001
Watt W 0 1
Kilowatt kW 3 1000
Megawatt MW 6
10
6
Rotation 11 Rotation per
minute
RPM 67 1
Torque 16
Newton meter Nm 0 1
Kilo newton
meter
kNm 3 1000
Tempera-
ture
17 Degree celsius ºC 0 1
Voltage 21
Millivolt mV -3 0.001
Volt V 0 1
Kilovolt kV 3 1000
Current 22
Milliampere mA -3 0.001
Ampere A 0 1
Kilo ampere kA 3 1000
Resistance 23
Milliohm
mΩ
-3 0.001
Ohm
Ω
0 1
Kiloohm
kΩ
3 1000
Ratio 24 Percent % 0 1
Relative
change
27 Percent % 0 1
Frequency 28
Hertz Hz 0 1
Kilohertz kHz 3 1000
Megahertz MHz 6
10
6
Gigahertz GHz 9
10
9
Table 5.18 Size Index and Conversion Index
5.4.3 Object and Data Types Supported
Data type Short name Description
3 I2 Integer 16
4 I4 Integer 32
5 – Unsigned 8
6 O2 Unsigned 16
7 O4 Unsigned 32
9 – Visible string
10 – Byte string
33 N2 Standardized value (16 bit)
35 V2 Bit sequence
54 – Time dierence without date
indication
Table 5.19 Supported Data Types
5.4.4 Standardized Value
The frequency reference value transmits to the frequency
converter in the form of a 16-bit word. The value transmits
in integers (0–32767). The value 16384 (4000 hex)
corresponds to 100%. Negative numbers are formed with
the aid of the 2s complement.
0%=0 (0h), 100%=2
14
(4000 h)
Data type N2
Range -200% to +200%
Resolution
2
-14
=0.0061%
Length 2 bytes
Table 5.20 N2 Data Type
Msb is the
rst bit after the sign bit in the rst byte.
•
Sign bit = 0 = positive number.
•
Sign bit = 1 = negative number.
Bit Byte 1 Byte 2
8 SIGN
2
7
7
2
14
2
6
6
2
13
2
5
5
2
12
24
4
2
11
2
3
3
2
10
2
2
2
2
9
2
1
1
2 2
0
Table 5.21 Notation is 2s Complement
Parameter Access
VLT
®
PROFIBUS DP MCA 101
34 Danfoss A/S © 01/2016 All rights reserved. MG37G202
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Danfoss VLT PROFIBUS DP MCA 101 Specifications

General

Brand	Danfoss
Model	VLT PROFIBUS DP MCA 101
Category	Media Converter
Language	English