Moeller DV6-340 Series User manual

Hardware and Engineering
DV6-340-...
Vector Frequency Inverters
01/02 AWB8230-1415GB
1st published 2002, edition 01/02
© Moeller GmbH, Bonn
Authors: Holger Friedrich, Jörg Randermann
Editor: Michael Kämper
Translator: Dominik Kreuzer
All brand and product names are trademarks or registered
trademarks of the owner concerned.
All rights reserved, including those of the translation.
No part of this manual may be reproduced in any form
(printed, photocopy, microfilm or any otherprocess) or processed,
duplicated or distributed by means of electronic systems without
written permission of Moeller GmbH, Bonn.
Subject to alterations without notice.
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I
Before commencing the installation
• Disconnect the power supply of the device.
• Ensure that devices cannot be accidentally restarted.
• Verify isolation from the supply.
• Earth and short circuit.
• Cover or enclose neighbouring units that are live.
• Follow the engineering instructions (AWA) of the
device concerned.
• Only suitably qualified personnel in accordance with
EN 50 110-1/-2 (VDE 0105 Part 100) may work on this
device/system.
• Before installation and before touching the device ensure
that you are free of electrostatic charge.
• The functional earth (FE) must be connected to the protective
earth (PE) or to the potential equalisation. The system installer
is responsible for implementing this connection.
• Connecting cables and signal lines should be installed so
that inductive or capacitive interference do not impair the
automation functions.
• Install automation devices and related operating elements in
such a way that they are well protected against unintentional
operation.
• Suitable safety hardware and software measures should be
implemented for the I/O interface so that a line or wire
breakage on the signal side does not result in undefined
states in the automation devices.
• Ensure a reliable electrical isolation of the low voltage for the
24 volt supply. Only use power supply units complying with
IEC 60 364-4-41 (VDE 0100 Part 410) or HD 384.4.41 S2.
• Deviations of the mains voltage from the rated value must
not exceed the tolerance limits given in the specifications,
otherwise this may cause malfunction and dangerous
operation.
• Emergency stop devices complying with IEC/EN 60 204-1 must
be effective in all operating modes of the automation devices.
Unlatching the emergency-stop devices must not cause restart.
• Devices that are designed for mounting in housings or control
cabinets must only be operated and controlled after they have
been installed with the housing closed. Desktop or portable
units must only be operated and controlled in enclosed
housings.
• Measures should be taken to ensure the proper restart of
programs interrupted after a voltage dip or failure. This should
not cause dangerous operating states even for a short time.
If necessary, emergency-stop devices should be implemented.
• Wherever faults in the automation system may cause
damage to persons or property, external measures must be
implemented to ensure a safe operating state in the event of
a fault or malfunction (for example, by means of separate limit
switches, mechanical interlocks etc.).
• According to their degree of protection frequency inverters may
feature during operation live, bright metal, or possibly moving,
rotating parts or hot surfaces.
• The impermissible removal of the necessary covers, improper
installation or incorrect operation of motor or frequency
inverter may cause the failure of the device and may lead to
serious injury or damage.
• The relevant national regulations apply to all work carried on
live frequency inverters.
• The electrical installation must be carried out in accordance
with the relevant regulations (e. g. with regard to cable cross
sections, fuses, PE).
• All work relating to transport, installation, commissioning and
maintenance must only be carried out by qualified personnel.
(IEC 60 364 and HD 384 and national work safety regulations).
• Installations fitted with frequency inverters must be provided
with additional monitoring and protective devices in
accordance with the relevant safety regulations etc.
Modifications to the frequency inverters using the operating
software are permitted.
Moeller GmbH Safety instructions
Warning!
Dangerous electrical voltage!
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II
•All shrouds and doors must be kept closed during operation.
•In order to reduce hazards to persons or equipment, the user
must include in the machine design measures that restrict the
consequences of a malfunction or failure of the drive
(increased motor speed or sudden standstill of motor).
These measures include:
–Other independent devices for monitoring safety-related
variables (speed, travel, end positions etc.).
–Electrical or non-electrical system related measures
(interlocks or mechanical interlocks).
–Live parts or cable connections of the frequency inverter
must not be touched after it has been disconnected from the
power supply due to the charge in capacitors. Appropriate
warning signs must be provided.
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01/02 AWB8230-1415GB
1
Contents
About this Manual 5
Abbreviations and symbols 5
Changes 5
1 About the DV6 frequency inverters 7
System overview 7
Type code 8
Inspecting the package content 9
Layout of the DV6 10
–Features of the frequency inverters 11
Selection criteria 11
Intended use 12
Service and guarantee 12
2 Engineering 13
Performance features of the DV6 13
Connecting to the mains 15
–Mains configurations 15
–Mains voltage, Mains frequency 15
–Interaction with p.f. correction equipment 15
–Fuses and cable cross-sections 15
–Protection of persons and domestic animals with
residual-current protective devices 16
–Mains contactor 16
–Current peaks 16
–Mains choke 17
–Mains filters and radio interference filters 17
EMC guidelines 18
–EMC interference class 18
3 Installation 19
Installing the DV6 19
–Mounting position 19
–Installation dimensions 19
–Mounting the DV6 20
EMC compliance 21
–EMC compliant installation 21
–Using the radio interference filter 22
–EMC measures in the control panel 23
–Earthing 24
–Screening 24
Electrical connection 26
–Connecting the power section 28
–Connecting the control signal terminals 38
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Contents 01/02 AWB8230-1415GB
2
4 Operating the DV6 45
Initial startup 45
LCD keypad 46
Operation with LCD keypad 46
–Menu overview 47
–Changing display and Basic parameters 48
–Changing the parameters of the extended
parameter groups 48
Display after the supply voltage is applied 49
Connection examples 50
–Operation using an external potentiometer 50
–Operation through an analog setpoint value 50
–Operation with fixed frequencies 51
Operational warnings 52
5 Programming the control signal terminals 53
Overview 53
Analog outputs –AM, AMI and FM 58
–Voltage output (AM) 58
–Current output (AMI) 59
–Frequency output (FM) 59
Analog inputs, terminals O, O2 and OI 61
–Frequency setpoint definition 61
–Matching of terminals O, O2 and OI 62
–Analog setpoint value matching 63
Programmable digital inputs 1 to 8 66
–Start/stop 68
–Fixed frequency selection (FF1 to FF4) 69
–Bitwise fixed frequency selection (SF1 to SF7) 71
–Analog input changeover (AT) 73
–Second time ramp 2CH 74
–Controller inhibit and coasting (free run stop –FRS) 75
–External fault message (EXT) 76
–Unattended start protection USP 77
–Reset (RST) 78
–Jog mode (JOG) 79
–Change over vector parameters (CAS) 81
–PTC/NTC thermistor input, terminal TH 82
–Software protection (SFT) 83
–Motor potentiometer functions: accelerate (UP) –
decelerate (DWN) –Reset frequency (UDC) 84
–Use second and third parameter set (SET/SET3) 86
–Activate DC braking DB 88
–Change over current limit (OLR) 90
–Heavy mains starting (CS) 91
–Setpoint value through keypad (OPE) 93
–Torque limitation (TL), torque selection (TRQ1 and TRQ2) 94
–Three-wire control (STA –STP –F/R) 96
–Activating/deactivating PID control (PID)
Resetting PID and integral component (PIDC) 97
–Changeover from PI to P control (PPI) 98
–Brake enable confirmation (BOK) 100
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01/02 AWB8230-1415GB Contents
3
Programmable digital outputs 11 to 15 101
–Frequency arrival signal FA1/FA2/FA3/FA4/FA5 102
–Run signal (RUN) 104
–Overload signal OL, OL2 105
–PID control deviation (OD) 106
–Fault signal (AL) 107
–Release brake (BRK) and brake fault (BER) 108
–Zero frequency (ZS) 109
–Torque exceeded (OTQ) 110
–Torque limitation (TRQ) 111
–Instant stop (IP) and undervoltage (UV) 113
–Running time (RNT) and Mains On time (ONT) 114
–Motor thermal overload (THM) 115
–Digital fault message output 116
Signalling relay terminals K11, K12, K14 117
6 Setting Parameters 119
Setting the display parameters 120
Basic functions 121
–Input/display frequency value 121
–Acceleration time 1 121
–Deceleration time 1 122
–Direction of rotation 122
Setting the frequency and start signal parameters 123
–Definition of frequency setpoint value 123
–Start signal 123
–Base frequency 125
–Maximum end frequency 125
Voltage/frequency characteristic and voltage boost 126
–Boost 126
–Voltage/frequency characteristics 126
DC braking (DCB) 130
Operating frequency range 132
Acceleration pause 133
PID controller 134
–PID control 134
–Structure and parameters of the PID controller 137
–Example for setting Kpand Ti143
–Application examples 144
Automatic voltage regulation (AVR) 146
Energy-saving mode 147
Time ramps 148
Acceleration and deceleration characteristics 149
Automatic restart after a fault 151
Electronic motor protection 154
–Tripping characteristics at increased overload protection 154
–Tripping characteristic at normal overload protection 155
–Tripping characteristic at adjustable overload protection 155
Current limit 157
Parameter protection 159
Controlled deceleration 160
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Contents 01/02 AWB8230-1415GB
4
Other functions 162
–Inhibit direction of rotation 162
–Starting behaviour 162
–Display mode 163
–Pulse frequency 164
–Initialization 165
–Country version 165
–Frequency factor for display through PNU d007 165
–Inhibit of the OFF key 165
–Motor restart after cancellation of the FRS signal 166
–Controlling the built-in braking transistor 166
–Type of motor stop 168
–Fan control 168
–Debug mode 168
Controlling an external brake 169
SLV and autotuning 171
–SLV (sensorless vector control) 171
–Autotuning 171
PI controller 175
User-defined parameters –parameter group U 176
7 Messages 177
Fault messages 177
–State of frequency inverter on fault message 177
–Fault message display 177
–Fault history register 178
Other messages 180
Warnings 181
8 Troubleshooting 183
Appendix 185
Technical Data 185
Weights and dimensions 193
Cables and fuses 194
Mains contactors 195
Mains choke 196
Radio interference filters 197
Standard form for user defined parameter settings 199
Index 215
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01/02 AWB8230-1415GB
5
About this Manual
This manual describes the DV6 series frequency inverters.
This manual contains information you need to install, configure
and operate the DV6 frequency inverters.The features, parameters
and functions are described in detail, with examples for the most
important applications. All information applies to the specified
hardware and software versions.
Abbreviations and symbols
The following abbreviations and symbols are used in this manual:
All measurements are in millimeters unless otherwise stated.
In some of the illustrations, the enclosure of the frequency inverter
and other components affecting equipment safety have been
omitted for improved clarity. However, the frequency inverter must
always be operated with the enclosure and all necessary compon-
ents that affect equipment safety correctly fitted.
Read the manual thoroughly before you install and operate the
frequency inverter. We assume that you have a good knowledge
of engineering fundamentals and that you are familiar with the
electrical systems and the applicable principles and are able to
read, interpret and apply the information contained in technical
drawings.
XIndicates instructions to be followed
To improve legibility, the title of the current section is given at the
top of each left-hand page and the current subsection at the top
of each right-hand page, except on the title page of each section
and the blank pages at the end of each section.
Changes
EMC Electro Magnetic Compatibility
ESD Electrostatic Discharge
HF High Frequency
IGBT Insulated Gate Bipolar Transistor
PES Positive Earth connection of the cable screen
PNU Parameter Number
WE Radio-frequency interference (RFI)
hIndicates useful tips and additional information
Caution!
Warns of the possibility of minor material damage.
Warning!
Warns of the possibility of major material damage and
minor injury.
Warning!
Warns of the possibility of major material damage and
serious or fatal injury.
Publication date Page Keyword New Change Omitted
01/02 202 PNU A042 to A343, default setting j
203 PNU A244, value 05 j
203 PNU A344, values 02 to 05 j
203 PNU A056 to A059, default setting j
211 PNU A029 instead of A027 after PNU A028 j
212 PNU C087, gain, terminal AMI instead of AM j
212 PNU C088, default setting j
214 to 215 Parameter group H j
215 Parameter group U j
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01/02 AWB8230-1415GB
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01/02 AWB8230-1415GB
7
1 About the DV6 frequency inverters
System overview
Figure 1: System overview
aDEX-DEY-10 external keypad
bExpansion module, for example for PROFIBUS-DP connection: DE6-NET-DP
cDV6 frequency inverters
dDE6-LZ... RFI filter
eMains choke
fBraking resistor
a
f
e
d
c
b
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About the DV6 frequency
inverters
01/02 AWB8230-1415GB
8
Type code
Type codes and type designations of the DV6 frequency inverters:
Example:
Figure 2: Type codes of the DV6 frequency inverters
DV6-340-11K The DV6 frequency inverters
Three-phase mains supply voltage: 400 V
Assigned motor rating: 11 kW at 400 V
DV6-xxx-yyy
Motor rating code
Incoming supply: EU rated voltage 400 V
Version and model number
0 = basic version
1 = system devices
2 = voltage code suffix
Supply connection, voltage code (EU rated value)
4 = 400 V (342 V –0 % to 506 V + 0 %)
Supply connection, phase code
3 = three-phase
Series designation:
Drives Vector frequency inverter, generation 6
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01/02 AWB8230-1415GB Inspecting the package
content
9
Inspecting the package content
The DV6 frequency inverter has been carefully packaged and
prepared for delivery. The device may be transported only in its
original packaging with a suitable transport system (see weight
details). Observe the instructions and the warnings on the side of
the packaging. This also applies after the device is removed from
the package.
Open the packaging with suitable tools and inspect the contents
immediately on delivery to ensure that they are complete and
undamaged. The package should contain the following items:
•one DV6 frequency inverter,
•Installation instructions, AWA8230-1938,
•one CD containing:
–this manual in PDF format and copies in other languages
–the parameterization software
Hardware requirements: PC with Windows 95/98/ME/2000/
NT and the DEX-CBL-2M0-PC connecting cable
Figure 3: Package content
hOn the nameplate attached to the frequency inverter,
check to ensure that the frequency inverter is the type
which you have ordered.
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About the DV6 frequency
inverters
01/02 AWB8230-1415GB
10
Layout of the DV6
Figure 4: Physical features of the DV6
aKeypad
bFan
cHeat sink
dInterface connector for keypad
eTwo slots for optional modules
fRS 485 interface
gControl signal terminals
hPower terminals
iCable entry
jScrew for opening the terminal shroud
kTerminal shroud
lCover
a
b
d
e
f
g
h
i
c
l
k
j
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01/02 AWB8230-1415GB Selection criteria
11
Features of the frequency inverters
The DV6 frequency inverters convert the voltage and frequency of
an existing three-phase supply to a DC voltage and use this
voltage to generate a three-phase supply with adjustable voltage
and frequency. This variable three-phase supply allows infinitlely
adjustable speed control of three-phase asynchronous motors.
aSupply through an interference suppressor
Mains voltage VLN (EU-rated voltages):
3-phase 400 V AC, 50/60 Hz
bThe bridge rectifiers convert the AC voltage of the electrical supply to
a DC voltage.
cThe DC link contains a charging resistor, smoothing capacitor and
switched-mode power supply unit. It enables coupling of the DC bus
voltage and the DC current supply:
DC bus voltage (VZK) = W2 xmains voltage (VLN)
dIGBT power inverter:
The power inverter converts the DC voltage of the internal DC link to
a variable three-phase alternating voltage with variable frequency. In
conjunction with an external braking resistor, the braking transistor
allows braking of motors with a high moment of inertia or during
extended regenerative operation.
eOutput voltage (V2), motor connection:
three-phase, variable AC voltage, 0 to 100 % of the input voltage
(VLN)
Output frequency (f2):
variable frequency, 0 to 400 Hz
Output rated current (I2N):
2.5 to 260 A with about 1.5 times the starting current for 60 s, with a
switching frequency of 5 kHz and at an ambient temperature of 40 °C
Motor connection, assigned shaft output (P2):
0.75 to 132 kW at 400 V
fProgrammable control section with keypad and interface
Selection criteria
Select the frequency inverter according to the rated current of the
motor. The rated output current of the frequency inverter must
however, be greater than or equal to the rated current of the
motor.
The following drive data is assumed to be known:
•Type of motor (three-phase asynchronous motor)
•Mains voltage = supply voltage of the motor (e.g. 3 ~ 400 V)
•Rated motor current (guide value, dependent on the circuit type
and the supply voltage)
•Load torque (quadratic, constant, with 1.5 times the starting
torque)
•Ambient temperature (maximum temperature 40 °C).
The rated output current of the frequency inverter can be found in
the technical data in the appendix from Page 187.
Figure 5: Function chart of the frequency inverter
a
bc d
f
e
M
3
˜
h
hIf several motors are connected in parallel to the output of
a frequency inverter, the motor currents are subject to
vector addition, i.e. the active in-phase current and reac-
tive current components are added separately. When you
select a frequency inverter, make sure that it can supply
the total resulting current.
hIf you connect a motor to an operational frequency
inverter, the motor draws a multiple of its rated current.
When you select a frequency inverter, make sure that the
starting current plus the sum of the currents of the
running motors will not exceed the rated output current of
the frequency inverter.
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About the DV6 frequency
inverters
01/02 AWB8230-1415GB
12
Intended use
The DV6 frequency inverters are not domestic appliances. They are
designed only for industrial use as system components.
The DV6 frequency inverters are electrical apparatus for control-
ling variable speed drives with three-phase motors. They are desi-
gned for installation in machines or for use in combination with
other components within a machine or system.
After installation in a machine, the frequency inverters must not be
taken into operation until the associated machine has been
confirmed to comply with the safety requirements of Machinery
Safety Directive (MSD) 89/392/EEC and meets the requirements of
EN 60204. The owner/operator of the equipment is responsible for
ensuring that the machine is used in compliance with the relevant
EU Directives.
The CE markings on the DV6 frequency inverter confirm that, when
used in a typical drive configuration, the apparatus complies with
the European Low Voltage Directive (LVD) and the EMC Directives
(Directive 73/23/EEC, as amended by 93/68/EEC and Directive 89/
336/EEC, as amended by 93/68/EEC).
In the described system configurations, DV6 frequency inverters
are suitable for use in public and non-public networks. Depending
on their location of use, additional, external filtering may be
necessary.
Connection to IT networks (networks without a ground potential
reference point) is not permitted as the devices internal filter
capacitors connect the network to the ground potential (enclo-
sure). On earth free networks, this can lead to dangerous situa-
tions or damage the device (isolation monitoring is required).
To the output of the frequency inverter (terminals U, V, W) you
may not:
•connect a voltage or capacitive loads (e.g. phase compensation
capacitor),
•connect multiple frequency inverters in parallel,
•make a direct connection to the input (bypass).
Observe the technical data and terminal requirements. For additi-
onal information, refer to the equipment nameplate or label and
the documentation.
Any other usage constitutes improper use.
Service and guarantee
In the unlikely event that you have a problem with your Moeller
frequency inverter, please contact your local sales office.
Please have the following data and information about your
frequency inverter to hand:
•Exact frequency inverter type designation (anameplate)
•Date of purchase
•Detailed description of the problem which has occurred with the
frequency inverter
If some of the information printed on the nameplate is not legible,
please state only the information which is clearly legible.
Information concerning the guarantee can be found in the Moeller
General Terms and Conditions of Sale.
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01/02 AWB8230-1415GB
13
2 Engineering
This section describes the “Performance features of the DV6“and
the requirements and directives concerning the following:
•Connecting to the mains
•EMC guidelines
Performance features of the DV6
Ambient temperatures
Operation1) Ta = –10 to +40 °C at rated current Iewithout derating,
up to +50 °C at reduced pulse frequency of 2 kHz and output current reduced to 80 % Ie
Storage Ta = –20 to +65 °C
Transport Ta = –25 to +70 °C
Permissible environmental conditions
Resistance to vibration Impact and vibration:
•DV6-340-007 to DV6-340-2K2: up to 5.9 m/s2(0.6 g) at 10 to 55 Hz
•from DV6-340-4K0: up to 2.94 m/s2(0.3 g) at 10 to 55 Hz
Degree of pollution VDE 0110 Part 2, pollution degree 2
Packaging Dust proof packaging (DIN 4180)
Climatic conditions Class 3K3 according to EN 50178 (non-condensing, average relative humidity 20 to 90 %)
Installation altitude Up to 1000 m above sea level
Mounting position Vertically suspended
Free surrounding areas 100 mm above and below device
Electrical data
Emitted interference IEC/EN 61800-3 (EN 55011 group 1, class B)
Noise immunity IEC/EN 61800-3, industrial environment
Insulation resistance Overvoltage category III according to VDE 0110
Leakage current to PE Greater than 3.5 mA according to EN 50178
Degree of protection IP20
Protection against direct contact Finger and back-of-hand proof (VBG 4)
Protective isolation against switching
circuitry
Safe isolation from the mains. Double basic isolation according to EN 50178
Protective measures Overcurrent, earth fault, overvoltage, undervoltage, overload, overtemperature, electronic motor protec-
tion: I2tmonitoring and PTC input (thermistor or temperature contacts)
Open-/closed-loop control
Modulation method Pulse width modulation (PWM), V/fcharacteristics control (linear, quadratic)
Switching frequency 5 kHz (default), adjustable from 0.5 to 15 kHz
Torque At start 1.5 xMNfor 60 s at assigned motor rating, every 600 s, 2 xMNfor 0.5 s
Output frequency
Range 0.1 to 400 Hz
Frequency resolution 0.1 Hz, at digital setpoint, maximum frequency/1000 with analog setpoint value
Error limit at 25 °C g10 °CDigital setpoint definition g0.01 % of the maximum frequency
Analog setpoint definition g0.2 % of the maximum frequency
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Engineering 01/02 AWB8230-1415GB
14
Relay
Changeover contact •Contacts K11-K14
–250 V AC, 2 A (resistive load)
–250 V AC, 0.2 A (inductive load, p.f. = 0.4)
–100 V AC, minimum 10 mA
–30 V DC, 8 A (resistive load)
–30 V DC, 0.6 A (inductive load, p.f. = 0.4)
–5 V DC, minimum 100 mA
•Contacts K11-K12
–250 V AC, 1 A (resistive load)
–250 V AC, 0.2 A (inductive load, p.f. = 0.4)
–100 V AC, minimum 10 mA
–30 V DC, 1 A (resistive load)
–30 V DC, 0.2 A (inductive load, p.f. = 0.4)
–5 V DC, minimum 100 mA
Internal voltages
Control 24 V DC, maximum 30 mA
Setpoint definition 10 V DC, maximum 10 mA
Analog and digital actuation
Analog inputs •1 input, 0 to 10 V, input impedance 10 kO
•1 input, 4 to 20 mA, load impedance 250 O
•1 input, +10 to –10 V, input impedance 10 kO
Digital inputs/outputs 8 inputs, user-configurable
5 outputs, open collector (up to 27 V DC, 50 mA), user-configurable
Analog outputs •1 output for motor frequency or current, 10 V, up to 1.2 mA
•1 output, 0 to 10 V, up to 2 mA, user-configurable
•1 output, 4 to 20 mA, user-configurable
Keypad (built-in)
Operation 6 function keys for controlling and parameterizing the DV6
Display Four-digit, 7-segment display and ten LEDs (for status signals)
Potentiometer Setpoint definition (0 to 270°)
1) If the frequency inverter is to be installed in a control panel, enclosure or similar installation, the temperature within the enclosure or control panel is
considered to be ambient temperature Ta. The use of fans should be considered to ensure that the ambient temperature remains within permissible
limits.
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01/02 AWB8230-1415GB Connecting to the mains
15
Connecting to the mains
The DV6 frequency inverters can not be used in every network
configuration without limitations (network configuration accor-
ding to IEC 364-3).
Mains configurations
Networks with earthed centre point (TT/TN networks):
•DV6 frequency inverters can be used without limitations in TT
and TN networks. The ratings of the DV6 frequency inverters
must, however, be observed.
Networks with earthed centre point (IT networks):
•The use of DV6 frequency inverters in IT networks is only
permissible to a limited extent. In this case, a suitable device
(isolation monitor) to monitor earth faults and isolates the
frequency inverter from the mains must be used.
Mains voltage, Mains frequency
The ratings of the DV6 frequency inverters cover European and
American standard voltages:
•400 V, 50 Hz (EU) and 460 V, 60 Hz (USA)
The permissible mains voltage range is:
•380/480 V: 342 V –0%to528V+0%
The permissible frequency range is 47 Hz –0%to63Hz+0%.
The motor rating to mains voltage assignments are listed in the
appendix, Section “Technical Data“, Page 185.
Interaction with p.f. correction equipment
The DV6 frequency inverters absorb only a small fundamental
reactive power from the AC supply. A p.f. correction is therefore
not necessary.
Fuses and cable cross-sections
The fuse ratings and cable cross-sections required for the network
connection depend on the rating of the frequency inverter and the
the drive’s operating mode.
The recommended fuses and their assignment to the DV6
frequency inverters are listed in the appendix, Section “Cables and
fuses“, Page 194.
The national and regional standards (e.g. VDE 0113, EN 60204)
must be observed and any required approvals (e.g. UL) at the site
of installation must be fulfilled.
When the device is operated in a UL-approved system, only
UL-approved fuses, fuse bases and cables must be used.
The leakage currents to ground (according to EN 50178) are
greater than 3.5 mA. The PE terminal and the enclosure must be
connected to the earth-current circuit.
Caution!
In the event of an earth fault in an IT system, the capaci-
tors of the frequency inverter which are switched to earth
are subjected to a very high voltage, and safe operation
of the frequency inverter is no longer guaranteed. To over-
come this problem,fit additional isolating transformer to
the frequency inverter’s supply and earth the trans-
former’s secondary side at its centre point to form, in
effect, an individual TN network for the frequency
inverter.
Caution!
Operation of DV6 series frequency inverters on the mains
with p.f. correction equipment is only permitted when this
equipment is dampened with chokes.
Caution!
When selecting the cable cross-section, take the voltage
drop under load conditions into account. Compliance to
further standards (e.g. VDE 0113, VDE 0289) is the
responsibility of the user.
Caution!
The prescribed minimum cross-sections of PE conductors
(EN 50178, VDE 0160) must be observed. Use a PE
conductor whose cross-section is as least as large as the
terminal capacity of the power terminals.
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Engineering 01/02 AWB8230-1415GB
16
Protection of persons and domestic animals with residual-
current protective devices
Residual-current circuit breakers (RCCBs; also called earth-leakage
circuit breakers or ELCBs). Universal current sensitive RCCBs
according to EN 50178 and IEC 755.
The frequency inverter has a built-in mains rectifier. When a frame
fault occurs, a DC fault current can block the trip of the alternating
current sensitive or pulse current sensitive residual-current circuit
breaker, thereby preventing its protective function. We therefore
recommend the use of:
•Universal RCCBs with a rated fault current f300 mA.
The approximate fault current values of the DV6 frequency inver-
ters and their assigned radio interference filters are listed in the
appendix, Section “Radio interference filters“, Page 197.
Spurious tripping of a residual-current circuit breaker can be
caused by the following:
•capacitive compensation currents in the cable screens, particu-
larly with long, screened motor cables,
•simultaneous connection of multiple frequency inverters to the
mains supply,
•the use of additional chokes and filters (radio interference
filters, line filters).
Mains contactor
The mains contactor is connected to the mains side input cables
L1, L2, L3 and allows the DV6 frequency inverter on the supplying
network to be switched on and off during operation and to be
disconnected in the event of a fault.
Mains contactors and their assignment to the DV6 frequency
inverters are listed in the appendix, Section “Mains contactors“,
Page 195.
Current peaks
In the following cases, a relatively high peak current can occur on
the primary side of the frequency inverter (i.e. on the supply
voltage side), which, under certain conditions, can destroy the
input rectifier of the frequency inverter:
•Imbalance of the voltage supply greater than 3 %.
•The maximum power output of the point of supply must be at
least 10 times greater than the maximum frequency inverter
rating.
•If sudden voltage dips in the supply voltage are to be expected,
e.g. :
–a number of frequency inverters are operated on a common
supply voltage
–a thyristor system and a frequency inverter are operated on a
common supply voltage
–power factor correction devices are switched on or off
In these cases, a mains choke with about 3 % voltage drop at
rated operation should be installed.
Identification on the residual-current circuit-breakers
Logo
Mode
l
Alternating
current sensitive
(RCCB, Type AC)
Pulse current
sensitive
(RCCB, Type A)
Universal current
sensitive
(RCCB, Type B)
Caution!
Residual-current circuit breakers must be installed only on
the primary side between the incoming supply and the
frequency inverter.
Warning!
To prevent the risk of fire, use only cables, residual-
current circuit breakers and contactors with the specified
rating.
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01/02 AWB8230-1415GB Connecting to the mains
17
Mains choke
The mains choke (also called commutating choke or line reactor)
is connected to the mains side input cables L1, L2, L3. It reduces
the harmonics and therefore reduces the apparent mains current
by up to 30 %.
A mains choke also limits any current peaks caused by potential
dips (e.g. caused by p.f. correction equipment or earth faults) or
switching operations on the mains.
The mains choke increases the lifespan of the internal DC link
capacitors and therefore the lifespan of the frequency inverter. Its
use is also recommended:
•with derating (temperatures above +40 °C, sites of installation
more than 1000 m above sea level),
•with parallel operation of multiple frequency inverters on a
single mains supply point,
•with DC link coupling of multiple frequency inverters (intercon-
nected operation).
Mains chokes and their assignment to the DV6 frequency inverters
are listed in the appendix, Section “Mains choke“, Page 196.
Mains filters and radio interference filters
Mains filters are a combination of mains chokes and radio interfe-
rence filters in a single enclosure. They reduce the current harmo-
nics and dampen high frequency radio interference levels.
Radio interference filters only dampen high frequency radio inter-
ference levels.
Caution!
The mains phase failure detection (PNU b006) does not
operate correctly when a radio interference filter is
installed.
Caution!
When line filters or radio interference filters are used, the
leakage current to earth increases. Observe this point
when installing residual-current circuit breakers.
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