Danfoss VLT FCD 311 Guide

VLT®FCD Series
■Contents
Introduction to FCD 300 ................................................................................ 3
Software version ...................................................................................................... 3
General warning ...................................................................................................... 4
These rules concern your safety ............................................................................. 4
Warning against unintended start ........................................................................... 4
Technology ............................................................................................................... 5
CE labelling ............................................................................................................ 7
Order form ............................................................................................................... 8
Ordering numbers for FCD 300, 380-480 V .......................................................... 10
Order form ............................................................................................................. 14
PC software and serial communication ................................................................. 15
Accessories for FCD 300 ...................................................................................... 16
The LCP 2 control unit, option .............................................................................. 23
Parameter selection ............................................................................................... 27
Installation .......................................................................................................... 29
Mechanical measurements .................................................................................... 29
Mechanical dimensions, motor mounting .............................................................. 29
Mechanical dimensions, stand alone mounting .................................................... 29
Mechanical installation ........................................................................................... 30
General information about electrical installation ................................................... 32
EMC-correct electrical installation ......................................................................... 34
Earthing of screened/armoured control cables ..................................................... 36
Diagram ................................................................................................................. 37
Electrical installation .............................................................................................. 38
Mains connection ................................................................................................... 39
Pre-fuses ................................................................................................................ 39
Motor connection ................................................................................................... 39
Direction of motor rotation ..................................................................................... 39
Parallel connection of motors ................................................................................ 39
Motor cables .......................................................................................................... 40
Motor thermal protection ....................................................................................... 40
Brake connection ................................................................................................... 40
Earth connection .................................................................................................... 41
Control of mechanical brake .................................................................................. 41
Electrical installation, control cables ...................................................................... 42
Elektrical installation, control terminals ................................................................. 43
VLT Software Dialog .............................................................................................. 43
Relay connection ................................................................................................... 43
Connection examples ............................................................................................ 44
Programming ..................................................................................................... 48
Operation & Display ............................................................................................... 48
Setup configuration ................................................................................................ 48
Load and Motor ..................................................................................................... 56
DC Braking ............................................................................................................ 60
References & Limits .............................................................................................. 65
Handling of references .......................................................................................... 66
Reference function ................................................................................................. 69
Inputs and outputs ................................................................................................. 74
Special functions .................................................................................................... 83
PID functions ......................................................................................................... 85
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VLT®FCD Series
Handling of feedback ............................................................................................. 87
Serial communication for FCD 300 ....................................................................... 94
Control Word according toFC protocol ................................................................ 100
Status Word according toFC Profile .................................................................... 101
Control word according to Fieldbus Profile ......................................................... 103
Status word according to profidrive protocol ....................................................... 104
Serial communication .......................................................................................... 106
Technical functions .............................................................................................. 113
All about FCD 300 ......................................................................................... 118
Special conditions ................................................................................................ 118
Galvanic isolation (PELV) .................................................................................... 118
Earth leakage current and RCD relays ............................................................... 118
Extreme operating conditions .............................................................................. 118
dU/dt on motor ..................................................................................................... 119
Switching on the input ......................................................................................... 119
Acoustic noise ...................................................................................................... 119
Temperature-dependent switch frequency ........................................................... 119
Derating for air pressure ...................................................................................... 120
Derating for running at low speed ....................................................................... 120
Motor cable lengths ............................................................................................. 120
Vibration and shock ............................................................................................. 120
Air humidity .......................................................................................................... 120
UL Standard ......................................................................................................... 120
Efficiency .............................................................................................................. 120
Mains supply interference/harmonics .................................................................. 121
Power factor ......................................................................................................... 121
Generic EMC standards / product standards ...................................................... 122
EMC emission ...................................................................................................... 122
EMC Immunity ..................................................................................................... 122
Status messages ................................................................................................. 125
Warnings/alarm messages .................................................................................. 125
Warning words, extended status words and Alarmwords ................................... 129
General technical data ......................................................................................... 130
Technical data, mains supply 3 x 380 - 480 V .................................................... 134
Available literature ............................................................................................... 135
Supplied with the unit .......................................................................................... 135
Factory Settings ................................................................................................... 136
MG.04.A1.02 - VLT is a registered Danfoss trade mark
2

VLT®FCD Series
195NA193.10
FCD 300 Series
Design guide
Software version: 1.0x
This design guide can be used for all FCD 300 Series fre-
quency converters with software version 1.0x.
The software version number can be seen from parameter
640 Software version no.
NB!:
This symbol indicates
something that should be noted by the reader.
Indicates a general warning.
This sym-
bol indicates a warning of high voltage.
MG.04.A1.02 - VLT is a registered Danfoss trade mark 3
Introduction to FCD 300

VLT®FCD Series
■General warning
The voltage of the frequency converter is
dangerous whenever the converter is con-
nected to mains. Incorrect fitting of the
motor or frequency converter may cause damage to
the equipment, serious injury or death. Conse-
quently, it is essential to comply with the instructions
in this manual as well as local and national rules and
safety regulations
■These rules concern your safety
1. The frequency converter must be disconnected
from the mains if repair work is to be carried out.
Check that the mains supply has been discon-
nected and that the prescribed time has passed
before removing the inverter part from the instal-
lation.
2. The [STOP/RESET] key on the optional control
panel does not disconnect the equipment from
mains and is thus not to be used as a safety
switch.
3. The unit must be properly connected to the earth,
the user must be protected against the supply
voltage and the motor must be protected against
overloading pursuant to prevailing national and lo-
cal regulations.
4. The earth leakage currents are higher than 3.5
mA.
5. Protection against motor overload is not included
in the factory setting. If this function is required,
set parameter 128 Motor thermal protection to
data value ETR trip or data value ETR warning.
For the North American market: The ETR func-
tions provide overload protection of the motor,
class 20, in accordance with NEC.
■Warning against unintended start
1. The motor can be brought to a stop by means of
digital commands, bus commands, references or
a local stop, while the frequency converter is con-
nected to mains. If personal safety considerations
make it necessary to ensure that no unintended
start occurs, these stop functions are not suffi-
cient.
2. While parameters are being changed, the motor
may start. Consequently, the stop key [STOP/RE-
SET] on the optional control panel must always be
activated, following which data can be modified.
3. A motor that has been stopped may start if faults
occur in the electronics of the frequency con-
verter, or if a temporary overload or a fault in the
supply mains or the motor connection ceases.
195NA194.10
Warning:
It can be extremely dangerous to touch the electrical parts
even when the AC line supply has been disconnected.
For FCD 300: wait at least 4 minutes.
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4

VLT®FCD Series
■Technology
■Control principle
A frequency converter rectifies AC voltage from the
mains supply into DC voltage, following which it
changes this voltage to an AC voltage with variable
amplitude and frequency.
The motor thus receives a variable voltage and fre-
quency, which enables infinitely variable speed
control of three-phase, standard AC motors.
1. Mains voltage
3 x 380 - 480 V AC, 50 / 60 Hz.
2. Rectifier
Three-phase rectifier bridge which rectifies AC volt-
age into DC voltage.
3. Intermediate circuit
DC voltage

=
√2 x mains voltage [V].
4. Intermediate circuit coils
Evens out the intermediate circuit current and limits
the load on mains and components (mains trans-
former, cables, fuses and contactors).
5. Intermediate circuit capacitor
Evens out the intermediate circuit voltage.
6. Inverter
Converts DC voltage into a variable AC voltage with
a variable frequency.
7. Motor voltage
Variable AC voltage depending on supply voltage.
Variable frequency: 0.2 - 132 / 1 - 1000 Hz.
8. Control card
Here is the computer that controls the inverter which
generates the pulse pattern by which the DC voltage
is converted into variable AC voltage with a variable
frequency.
■The decentral concept
The FCD 300 Adjustable speed drive is designed for
decentral mounting, e.g. in the food and beverage
industry, in the automotive industry, or for other ma-
terial handling applications.
With the FCD 300 it is possible to utilize the cost
saving potential by placing the power electronics de-
centrally, and thus make the central panels obsolete
saving cost, space and effort for installation and
wiring.
The unit is flexible in its mounting options for as well
stand alone mounting and motor mounting. It is also
possible to have the unit pre-mounted on a Danfoss
Bauer geared motor (3 in one solution). The basic
design with a plugable electronic part and a flexible
and “spacious”wiring box is extremely service-
friendly and easy to change electronics without the
need for unwiring.
The FCD 300 is a part of the VLT frequency con-
verter family, which means similar funcionality,
programming, and operating as the other family
members.
■Cleaning
The enclosure (IP66/NEMA type 4x indoor) will offer
protection against dirt and water ingress, and is de-
signed suitable for cleaning as performed in food and
beverage plants with the concentrations of cleaning
solvent as recommended by the manufacturer. High
pressure cleaning in very short distance or long time
with hot water may damage gaskets and lables.
■FCD 300 control principle
A frequency converter is an electronic unit which is
able to infinitely variably control the rpm of an AC
motor. The frequency converter governs the motor
speed by converting the regular voltage and fre-
quency from mains, e.g. 400 V / 50 Hz, into variable
magnitudes. Today the frequency converter con-
trolled AC motor is a natural part of all types of
automated plants.
The FCD 300 Series has an inverter control system
called VVC (Voltage Vector Control). VVC controls
an induction motor by energizing with a variable fre-
quency and a voltage suitable for it. If the motor load
changes, so does its energizing and speed. That is
why the motor current is measured on an ongoing
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Introduction to FCD 300

VLT®FCD Series
basis, and a motor model is used to calculate the
actual voltage requirement and slip of the motor.
■Programmable inputs and outputs in four Setups
In the FCD 300 Series it is possible to program the
different control inputs and signal outputs and to se-
lect four different user-defined Setups for most
parameters. It is easy for the user to program the re-
quired functions on the control panel or via serial
communication.
■Mains protection
The FCD 300 Series is protected against the tran-
sients that may occur on the mains, such as
coupling with a phase compensation system or tran-
sients from fuses blown or when lightening strikes.
Rated motor voltage and full torque can be main-
tained down to approx. 10% undervoltage in the
mains supply.
As all 400 V units in the FCD 300 Series have inter-
mediate circuit coils, there is only a low amount of
harmonic mains supply interference. This gives a
good power factor (lower peak current), which re-
duces the load on the mains installation.
■Frequency converter protection
The current measurement in the intermediate circuit
constitutes perfect protection of the FCD 300 Series
in case there is a short-circuit or an earth fault on
the motor connection.
Constant monitoring of the intermediate circuit cur-
rent allows switching on the motor output, e.g. by
means of a contactor.
Efficient monitoring of the mains supply means that
the unit will stop in the case of a phase drop-out (if
the load exceeds approx. 50%). In this way, the in-
verter and the capacitors in the intermediate circuit
are not overloaded, which would dramatically reduce
the service life of the frequency converter.
The FCD 300 Series offers temperature protection
as standard. If there is a thermal overload, this func-
tion cuts out the inverter.
■Reliable galvanic isolation
In the FCD 300 all digital inputs/outputs, analogue
inputs/outputs and the terminals for serial communi-
cation are supplied from or in connection with
circuits that comply with PELV requirements. PELV
is also complied with in relation to relay terminals at
max. 250 V, so that they can be connected to the
mains potential.
See section Galvanic Isolation (PELV) for further de-
tails.
■Advanced motor protection
The FCD 300 Series has integral electronic motor
protection.
The frequency converter calculates the motor tem-
perature on the basis of current, frequency and time.
As opposed to traditional, bimetallic protection, elec-
tronic protection takes account of reduced cooling at
low frequencies because of reduced fan speed (mo-
tors with internal fan). This function cannot protect
the individual motors when motors are connected in
parallel. Thermal motor protection can be compared
to a protective motor switch, CTI.
To give the motor maximum protection against over-
heating when it is covered or blocked, or if the fan
should fail, you can install a thermistor and connect it
to the frequency converter’s thermistor input (Digital
input), see parameter 128 Thermal motor protection.
NB!:
This function cannot protect the individual
motors in the case of motors linked in parallel.
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6

VLT®FCD Series
■CE labelling
What is CE labelling?
The purpose of CE labelling is to avoid technical ob-
stacles to trade within EFTA and the EU. The EU has
introduced the CE label as a simple way of showing
whether a product complies with the relevant EU di-
rectives. The CE label says nothing about the
specifications or quality of the product. Frequency
converters are regulated by three EU directives:
The machinery directive (98/37/EEC)
All machines with critical moving parts are covered
by the machinery directive, which came into force on
1 January 1995. Since a frequency converter is
largely electrical, it does not fall under the machinery
directive. However, if a frequency converter is sup-
plied for use in a machine, we provide information on
safety aspects relating to the frequency converter.
We do this by means of a manufacturer’s declaration.
The low-voltage directive (73/23/EEC)
Frequency converters must be CE labelled in accor-
dance with the low-voltage directive, which came
into force on 1 January 1997. The directive applies
to all electrical equipment and appliances used in
the 50 - 1000 Volt AC and the 75 - 1500 Volt DC
voltage ranges. Danfoss CE labels in accordance
with the directive and issues a declaration of confor-
mity upon request.
The EMC directive (89/336/EEC)
EMC is short for electromagnetic compatibility. The
presence of electromagnetic compatibility means
that the mutual interference between different com-
ponents/appliances is so small that the functioning of
the appliances is not affected.
The EMC directive came into force on 1 January
1996. Danfoss CE labels in accordance with the di-
rective and issues a declaration of conformity upon
request. In order that EMC-correct installation can
be carried out, this manual gives detailed instruc-
tions for installation. In addition, we specify the
standards which our different products comply with.
We offer the filters that can be seen from the specifi-
cations and provide other types of assistance to
ensure the optimum EMC result.
In the great majority of cases, the frequency con-
verter is used by professionals of the trade as a
complex component forming part of a larger appli-
ance, system or installation. It must be noted that the
responsibility for the final EMC properties of the ap-
pliance, system or installation rests with the installer.
MG.04.A1.02 - VLT is a registered Danfoss trade mark 7
Introduction to FCD 300

VLT®FCD Series
■Order form
This section makes it easier for you to specify and
order an FCD 300.
Choice of frequency converter
The frequency converter must be chosen on the ba-
sis of the present motor current at maximum loading
of the unit. The frequency converter’s rated output
current IINV. must be equal to or greater than the re-
quired motor current.
Mains voltage
FCD 300 is available for mains voltage range: 380-
480 V.
The frequency converter is connected to a mains
voltage of:
- 3 x 380 - 480 V three-phase AC voltage
3 x 380 - 480 Volt mains voltage
Typical shaft output
PINV.
Max. constant output current
IINV.
Max. constant output power
at 400 V SINV.
Type [kW] [HP] [A] [kVA]
303 0.37 0.50 1.4 1.0
305 0.55 0.75 1.8 1.2
307 0.75 1.0 2.2 1.5
311 1.1 1.5 3.0 2.0
315 1.5 2.0 3.7 2.6
322 2.2 3.0 5.2 3.6
330 3.0 4.0 7.0 4.8
■Enclosure
All FCD 300 units are supplied with IP 66, NEMA 4x
(Indoor) enclosure as standard.
■Brake
FCD 300 is available with or without an integral
brake module. See also the section entitled Brake
resistors for ordering a brake resistor.
Including mechanical brake control/supply.
■24 V external supply
Back up of control supply with 24 V DC is available
as optional function.
■RFI filter
FCD 300 has an integral 1A RFI-filter. The integral
1A RFI filter complies with EMC standards EN
55011-1A. See the sections Cable lengths and
Cross section for further details.
■Harmonic filter
The harmonic currents do not affect power con-
sumption directly, but they increase the heat losses
in the installation (transformer, cables). That is why
in a system with a relatively high percentage of recti-
fier load it is important to keep the harmonic currents
at a low level so as to avoid a transformer overload
and high cable temperature. For the purpose of en-
suring low harmonic currents, the units are fitted with
coils in their intermediate circuit as standard. This
reduces the input current IRMS by typically 40 %.
■Display unit
On the FCD 300 unit there are 5 indicator lamps for
voltage (ON), warning, alarm, status and bus.
In addition, an LCP control panel to be connected
via a plug to the frequency converter is available as
an option. The LCP control panel can be installed
up to 3 metres away from the frequency converter,
e.g. on a front panel, by means of a mounting kit.
All displays of data are via a 4-line alpha-numerical
display, which in normal operation is able to show 4
operating data items and 3 operation modes continu-
MG.04.A1.02 - VLT is a registered Danfoss trade mark
8

VLT®FCD Series
ously. During programming, all the information
required for quick, efficient parameter Setup of the
frequency converter is displayed. As a supplement
to the display, the LCP has three indicator lamps for
voltage (ON), warning (WARNING) and alarm
(ALARM). Most of the frequency converter’s parame-
ter Setups can be changed immediately via the LCP
control panel. See also the section entitled The LCP
control unit in the Design Guide.
■Fieldbus protocols
Danfoss frequency converters are able to fulfill many
different functions in a process control system. The
frequency converter can be integrated directly in an
overall surveillance system, which will allow detailed
process data to be transferred via serial communica-
tion.
The protocols listed below are based on an RS 485
bus system with a maximum transmission speed of
9600 baud. The following telegram profiles are sup-
ported as standard:
- FC protocol, which is a profile adapted to Dan-
foss.
- Profidrive protocol, which supports the profidrive
profile
See Serial communication for FCD 300 for further
details of telegram profiles.
■Fieldbus option
The increasing information requirements in industry
make it necessary to collect or visualize many differ-
ent process data. Important process data help the
system technician with the daily monitoring of the
system. The large amounts of data involved in major
systems make a higher transmission speed than
9600 baud desirable.
Profibus is a fieldbus system, which can be used for
linking automation devices such as sensors and
actuators with the controls by means of a two-
conductor cable.
Profibus DP is a very fast communication protocol,
made specially for communication between the au-
tomation system and various types of equipment.
Danfoss FCD 300 can be supplied with the Profibus ®
DP in a 3 mbit and a 12 mbit version. Units with
Profibus protocol can either be controlled by FC pro-
tocol or Profidrive protocol.
Profibus is a registered trade mark.
MG.04.A1.02 - VLT is a registered Danfoss trade mark 9
Introduction to FCD 300

VLT®FCD Series
■Ordering numbers for FCD 300, 380-480 V
0.37
kW
For motor mounting
FCD 303 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1698
ST - 175N1699
ST Profibus DP 3 MB 175N1700
ST Profibus DP 12 MB 175N1701
ST AS(i)** 175N1702
EX - 175N1703
EX Profibus DP 3 MB 175N1704
EX Profibus DP 12 MB 175N1705
EX AS(i)** 175N1706
EB - 175N1707
EB Profibus DP 3 MB 175N1708
EB Profibus DP 12 MB 175N1709
EB AS(i)** 175N1710
0.55
kW
For motor mounting
FCD 305 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1750
ST - 175N1751
ST Profibus DP 3 MB 175N1752
ST Profibus DP 12 MB 175N1753
ST AS(i)** 175N1754
EX - 175N1755
EX Profibus DP 3 MB 175N1756
EX Profibus DP 12 MB 175N1757
EX AS(i)** 175N1758
EB - 175N1759
EB Profibus DP 3 MB 175N1760
EB Profibus DP 12 MB 175N1761
EB AS(i)** 175N1762
0.37
kW
For stand alone mounting
FCD 303 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1711
ST - 175N1712
ST Profibus DP 3 MB 175N1713
ST Profibus DP 12 MB 175N1714
ST AS(i)** 175N1715
EX - 175N1716
EX Profibus DP 3 MB 175N1717
EX Profibus DP 12 MB 175N1718
EX AS(i)** 175N1719
EB - 175N1720
EB Profibus DP 3 MB 175N1721
EB Profibus DP 12 MB 175N1722
EB AS(i)** 175N1723
0.55
kW
For stand alone mounting
FCD 305 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1763
ST - 175N1764
ST Profibus DP 3 MB 175N1765
ST Profibus DP 12 MB 175N1766
ST AS(i)** 175N1767
EX - 175N1768
EX Profibus DP 3 MB 175N1769
EX Profibus DP 12 MB 175N1770
EX AS(i)** 175N1771
EB - 175N1772
EB Profibus DP 3 MB 175N1773
EB Profibus DP 12 MB 175N1774
EB AS(i)** 175N1775
ST: Standard unit.
EX: Unit with 24 V external supply.
EB: Unit with 24 V external supply and brake.
*: Only cable entries on the right side.
**: For availability , contact Danfoss.
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10

VLT®FCD Series
0.75
kW
For motor mounting
FCD 307 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1802
ST - 175N1803
ST Profibus DP 3 MB 175N1804
ST Profibus DP 12 MB 175N1805
ST AS(i)** 175N1806
EX - 175N1807
EX Profibus DP 3 MB 175N1808
EX Profibus DP 12 MB 175N1809
EX AS(i)** 175N1810
EB - 175N1811
EB Profibus DP 3 MB 175N1812
EB Profibus DP 12 MB 175N1813
EB AS(i)** 175N1814
1.1 kW For motor mounting
FCD 311 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1854
ST - 175N1855
ST Profibus DP 3 MB 175N1856
ST Profibus DP 12 MB 175N1857
ST AS(i)** 175N1858
EX - 175N1859
EX Profibus DP 3 MB 175N1860
EX Profibus DP 12 MB 175N1861
EX AS(i)** 175N1862
EB - 175N1863
EB Profibus DP 3 MB 175N1864
EB Profibus DP 12 MB 175N1865
EB AS(i)** 175N1866
0.75
kW
For stand alone mounting
FCD 307 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1815
ST - 175N1816
ST Profibus DP 3 MB 175N1817
ST Profibus DP 12 MB 175N1818
ST AS(i)** 175N1819
EX - 175N1820
EX Profibus DP 3 MB 175N1821
EX Profibus DP 12 MB 175N1822
EX AS(i)** 175N1823
EB - 175N1824
EB Profibus DP 3 MB 175N1825
EB Profibus DP 12 MB 175N1826
EB AS(i)** 175N1827
1.1 kW For stand alone mounting
FCD 311 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1867
ST - 175N1868
ST Profibus DP 3 MB 175N1869
ST Profibus DP 12 MB 175N1870
ST AS(i)** 175N1871
EX - 175N1872
EX Profibus DP 3 MB 175N1873
EX Profibus DP 12 MB 175N1874
EX AS(i)** 175N1875
EB - 175N1876
EB Profibus DP 3 MB 175N1877
EB Profibus DP 12 MB 175N1878
EB AS(i)** 175N1879
ST: Standard unit.
EX: Unit with 24 V external supply.
EB: Unit with 24 V external supply and brake.
*: Only cable entries on the right side.
**: For availability , contact Danfoss.
MG.04.A1.02 - VLT is a registered Danfoss trade mark 11
Introduction to FCD 300

VLT®FCD Series
1.5 kW For motor mounting
FCD 315 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1906
ST - 175N1907
ST Profibus DP 3 MB 175N1908
ST Profibus DP 12 MB 175N1909
ST AS(i)** 175N1910
EX - 175N1911
EX Profibus DP 3 MB 175N1912
EX Profibus DP 12 MB 175N1913
EX AS(i)** 175N1914
EB - 175N1915
EB Profibus DP 3 MB 175N1916
EB Profibus DP 12 MB 175N1917
EB AS(i)** 175N1918
2.2
kW**
For motor mounting
FCD 322 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1958
ST - 175N1959
ST Profibus DP 3 MB 175N1960
ST Profibus DP 12 MB 175N1961
ST AS(i)** 175N1962
EX - 175N1963
EX Profibus DP 3 MB 175N1964
EX Profibus DP 12 MB 175N1965
EX AS(i)** 175N1966
EB - 175N1967
EB Profibus DP 3 MB 175N1968
EB Profibus DP 12 MB 175N1969
EB AS(i)** 175N1970
1.5 kW For stand alone mounting
FCD 315 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1919
ST - 175N1920
ST Profibus DP 3 MB 175N1921
ST Profibus DP 12 MB 175N1922
ST AS(i)** 175N1923
EX - 175N1924
EX Profibus DP 3 MB 175N1925
EX Profibus DP 12 MB 175N1926
EX AS(i)** 175N1927
EB - 175N1928
EB Profibus DP 3 MB 175N1929
EB Profibus DP 12 MB 175N1930
EB AS(i)** 175N1931
2.2
kW**
For stand alone mounting
FCD 322 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N1971
ST - 175N1972
ST Profibus DP 3 MB 175N1973
ST Profibus DP 12 MB 175N1974
ST AS(i)** 175N1975
EX - 175N1976
EX Profibus DP 3 MB 175N1977
EX Profibus DP 12 MB 175N1978
EX AS(i)** 175N1979
EB - 175N1980
EB Profibus DP 3 MB 175N1981
EB Profibus DP 12 MB 175N1982
EB AS(i)** 175N1983
ST: Standard unit.
EX: Unit with 24 V external supply.
EB: Unit with 24 V external supply and brake.
*: Only cable entries on the right side.
**: For availability , contact Danfoss.
MG.04.A1.02 - VLT is a registered Danfoss trade mark
12

VLT®FCD Series
3.0
kW** For motor mounting FCD 330 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N2010
ST - 175N2011
ST Profibus DP 3 MB 175N2012
ST Profibus DP 12 MB 175N2013
ST AS(i)** 175N2014
EX - 175N2015
EX Profibus DP 3 MB 175N2016
EX Profibus DP 12 MB 175N2017
EX AS(i)** 175N2018
EB - 175N2019
EB Profibus DP 3 MB 175N2020
EB Profibus DP 12 MB 175N2021
EB AS(i)** 175N2022
3.0
kW** For stand alone mounting
FCD 330 3 x 380-480 V
Unit Fieldbus Ordering no.
ST* - 175N2023
ST - 175N2024
ST Profibus DP 3 MB 175N2025
ST Profibus DP 12 MB 175N2026
ST AS(i)** 175N2027
EX - 175N2028
EX Profibus DP 3 MB 175N2029
EX Profibus DP 12 MB 175N2030
EX AS(i)** 175N2031
EB - 175N2032
EB Profibus DP 3 MB 175N2033
EB Profibus DP 12 MB 175N2034
EB AS(i)** 175N2035
ST: Standard unit.
EX: Unit with 24 V external supply.
EB: Unit with 24 V external supply and brake.
*: Only cable entries on the right side.
**: For availability , contact Danfoss.
MG.04.A1.02 - VLT is a registered Danfoss trade mark 13
Introduction to FCD 300

VLT®FCD Series
MG.04.A1.02 - VLT is a registered Danfoss trade mark
14

VLT®FCD Series
■PC software and serial communication
Danfoss offers various options for serial communica-
tion. Using serial communication, it is possible to
monitor, program and control one or several fre-
quency converters from a centrally located computer.
In addition, all FCD 300 units have an RS 485 port
as standard, thereby enabling communication e.g.
with a PC. For this purpose, a program called VLT
Software Dialog is available.
VLT Software Dialog comes in three modules, as a
minimum containing the programs of the Basic mod-
ule.
The Basic module covers:
TEST RUN used for controlling and running in a fre-
quency converter, including
- Setting of reference value.
- simultaneous showing of selected parameters in
the form of graphs.
- option of DDE link, e.g. to spreadsheet.
PARAMETER SETUP is used for setting up and
transmitting parameter sets, including:
- setting of frequency converter parameters.
- parameter sets can be collected from and copied
to a frequency converter.
- documentation / setup print incl. charts.
HISTORY where the different development stages of
VLT Software dialog can be studied.
BUS ADDRESS SETUP is used for addressing FCD
300.
The logging module covers:
LOGGING is used for collecting and displaying his-
torical or real-time operating data.
- presentation of selected parameters from several
frequency converters in the form of graphs.
- collection of log data for file.
- option of DDE link, e.g. to spreadsheet.
MODEM SETUP is used to set up the frequency con-
verter’s modem. The module sets up the frequency
converter’s modem via the PC’s communication port.
The template module covers:
TEMPLATE SETUP is used for setting up template
files for PARAMETER SETUP.
- the template file acts as a screen that limits the
number of accessible parameters when a param-
eter file is to be made or edited in PARAMETER
SETUP
- the template file may contain preset values for
the parameters of the frequency converter
NB!:
The Logging and Template modules call for
the Basic module to be installed on the same
PC.
Guided tour covers:
Guided tour offers a demonstration of the VLT Soft-
ware Dialog program.
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Introduction to FCD 300

VLT®FCD Series
■Accessories for FCD 300
Type Description Ordering no.
LCP2 control unit LCP2 for programming the frequency converter 175N0131
Cable for LCP2 control unit Cable from LCP2 to frequency converter 175N0162
LCP2 remote-mounting kit Kit for remote-mounting of LCP2 (incl. 3 m cable,
excl. LCP2)
175N0160
LOP2 (Local Operation Pad) LOP can be used for setting the reference
and start/stop via the control terminals.
175N0128
VLT Software Dialog CD-ROM version* 175Z0953
Motor adaption plate Plate for adapting to non Danfoss Bauer motors. 175N2115
Membrane Membrane for preventing condensation. 175N2116
Internal brake resistor Brake resistor for mounting inside the terminal box. 175N2117
Plug kit for LCP2 Plug for LCP2 for mounting in the terminal box. 175N2118
Motor star terminal Terminal for interconnection of motor wires (star point). 175N2119
* Incl. the modules Basis, Logging, Template,
Guided Tour in 6 languages (Danish, English, Ger-
man, Italian, Spanish and French).
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16

VLT®FCD Series
■Dynamic braking
With the FCD 300 the dynamic braking quality in an
application can be improved in two ways, either with
the aid of brake resistors or AC braking.
Danfoss offers a complete range of brake resistors
for all FCD 300 frequency converters.
It is the job of the brake resistor to apply a load to
the intermediate circuit during braking, thereby en-
suring that the brake power can be absorbed by the
brake resistor.
Without a brake resistor, the intermediate circuit volt-
age of the frequency converter would go on rising,
until cutting out for protection. The advantage of us-
ing a brake resistor is that you can brake quickly with
large loads, e.g. on a conveyor belt.
Danfoss has chosen a solution in which the brake
resistor is not integrated into the frequency con-
verter. This gives the user the following advantages:
- The resistor’s cycle time can be selected as re-
quired.
- The heat generated during braking can be
diverted outside the panel cabinet, where the en-
ergy can possibly be utilised.
- No overheating of the electronic components,
even if the brake resistor is overloaded.
An internal brake resistorcan be mounted on the
small brake duty cycles.
AC braking is an integrated function that is used for
applications in which there is a need for limited dy-
namic braking. The AC braking function makes it
possible to reduce the brake power in the motor in-
stead of in a brake resistor. The function is intended
for applications where the required braking torque is
less than 50% of rated torque. AC braking is se-
lected in par. 400 Brake function.
NB!:
The AC brake cannot be used if the required
braking torque is more than 50% of rated
braking torque. In such instances a brake resistor
must be used.
■Brake Setup
The figure shows a brake Setup with a frequency
converter.
In the following paragraphs, expressions and
acronyms are used about brake Setups that can be
seen from the figure.
■Calculation of brake resistance
To ensure that the frequency converter does not cut
out for safety reasons when the motor brakes, the
resistance value is selected on the basis of the peak
braking effect and the intermediate circuit voltage:
R br =
U
DC
2
P peak
[]
It can be seen that the brake resistance depends on
the intermediate circuit voltage (UDC).
With frequency converters that have a mains voltage
of 3 x 380 - 480 Volt, the brake will be active at 770
Volt (UDC).
You can also choose to use the brake resistance
recommended by Danfoss (R REC). This is a guaran-
tee that the frequency converter is able to brake at
the highest braking torque (MBR). The recommended
brake resistance can be seen from the ordering table
for brake resistors.
RREC calculated as:
R rec =
U
DC
2
2 100
P motor 2 Mbr (%) 2 motor 2 inv
[]
NB!:
Remember to check that the brake resistance
can manage a voltage of 850 Volt or 430 Volt,
if Danfoss brake resistors are not being used.

motor is typically 0.90 and

INV is typically 0.98. For
400 Volt, RREC at 160% braking torque can be writ-
ten as:
400 volt R rec =420139
P motor
[]
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Introduction to FCD 300

VLT®FCD Series
NB!:
The minimum brake resistance selected
should have an ohmic value no more than
10% lower than that recommended by Danfoss. If a
lower brake resistance is selected there is a risk of
overcurrent, which can destroy the unit.
■Calculation of braking power
When calculating the braking power, it must be
ensured that the mean and peak powers can be dis-
sipated to the brake resistor. The mean power is
determined by the period time of the process, i.e. for
how long the brake is applied in relation to the
period time of the process. The peak power is deter-
mined by the braking torque, which means that
during braking the brake resistor must be able to
dissipate the energy input. The figure shows the re-
lation between mean power and peak power.
■Calculation of peak power of brake resistor
PPEAK, MEC is the peak power at which the motor
brakes on the motor shaft. It is calculated as follows:
P PEAK;MEC =
P
MOTOR 2 M BR (%)
100 [
W ]
Ppeak is the term describing the braking power that is
applied to the brake resistor when the motor applies
the brakes. PPEAK is smaller than PPEAK, MEC, as the
power is reduced by the efficiency of the motor and
the frequency converter. The peak effect is calcu-
lated as follows:
P PEAK
=
P
MOTOR 2 M BR (%) 2
 INV 2  MOTOR
100 [
W ]
If you select Danfoss’recommended braking resistor
(RREC), you are certain that the braking resistance
can generate a braking torque of 160% on the motor
shaft.
■Calculation of mean power on brake resistor
The mean power is determined by the period of the
process, i.e. how long you brake in relation to the
period of the process.
Duty-cycle for braking is calculated as follows:
Duty 0 cycle =
T
b 2 100
T p
[%]
Tp= The process time in seconds.
Tb= The braking time in seconds.
Danfoss sells brake resistors with variable duty-
cycles up to 40%. For example, with a 10%
duty-cycle, brake resistors can take up Ppeak in 10%
of the process period. The remaining 90% of the pe-
riod time is spent on redirecting surplus heat.
The mean power at 10% duty cycle can be calcu-
lated as follows:
P avg =
P
peak
10 [
W ]
The mean power at 40% duty cycle can be calcu-
lated as follows:
P avg =
P
peak
2 : 5[
W ]
These calculations apply to intermittent braking with
period times of up to 120 seconds.
NB!:
Period times longer than 120
sec. may lead to overheating of the resistor.
■Continuous braking
For continuous braking, a brake resistor should be
selected in which the constant braking power does
not exceed the mean power PAVG of the brake resis-
tor.
Please contact your Danfoss supplier for further in-
formation.
MG.04.A1.02 - VLT is a registered Danfoss trade mark
18

VLT®FCD Series
■Optimal braking using resistor
Dynamic braking is useful from maximum speed
down to around 8% of rated speed. Below 8%
speed DC braking can be used if necessary.
The most effective method is to switch from dynamic
to DC braking.
■Brake cable
Max. length [m]: 10 m
The connection cable to the brake resistor must be
screened/armoured. Connect the screen to the con-
ductive backplate at the frequency converter and to
the brake resistor metal cabinet by means of cable
clamps.
NB!:
If Danfoss brake resistors are not used,
it must be ensured that induction for the brake
resistor is low.
MG.04.A1.02 - VLT is a registered Danfoss trade mark 19
Introduction to FCD 300

VLT®FCD Series
■Safety functions in connection with installation
When a brake resistor is installed, the best possible
endeavours should be made to avoid overloads, as
the heat generating from a brake resistor may in-
volve a fire risk.
NB!:
The brake resistor
should be fitted to a nonflammable material.
For protection of the installation, a thermal relay is
fitted that cuts out the frequency converter if the
brake current is too high. Danfoss’40% brake resis-
tors contain a KLIXON switch. Flat pack resistors
are self-protecting.
The brake current setting on the thermal relay is cal-
culated as follows:
I THERMAL =
r
P AV G
R BR
RBR is the brake resistor value at any given time.
The drawing shows an installation with a thermal re-
lay.
■Ordering numbers for brake resistors
Flatpack brake resistors IP 54
Type Pmotor
[kW]
RMIN
[  ]
Size [  ] / [W]
per item
Duty cycle % Order no.
175Uxxxx
303 (400 V) 0.37 747 830  / 100 W 20 1000
305 (400 V) 0.55 747 830  / 100 W 20 1000
307 (400 V) 0.75 558 620  / 100 W 14 1001
311 (400 V) 1.10 387 430  / 100 W 8 1002
315 (400 V) 1.50 297 310  / 200 W 16 0984
322 (400 V) 2.20 198 210  / 200 W 9 0987
330 (400 V) 3.00 135 150
 / 200 W 5.5 0989
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20