Danfoss VLT 2800 User manual

MAKING MODERN LIVING POSSIBLE
Quick Guide
VLT®2800
www.danfoss.com/drives

Contents
1 Introduction 3
1.1 Purpose of the Manual 3
1.2 Additional Resources 3
1.3 Document and Software Version 3
1.4 Approvals and Certifications 3
1.5 Disposal 3
2 Safety 4
2.1 Safety Symbols 4
2.2 Qualified Personnel 4
2.3 Safety Precautions 4
3 Mechanical Installation 6
3.1 Overview 6
3.2 Motor Coils (195N3110) and RFI 1B Filter (195N3103) 7
3.3 Terminal Cover 8
3.4 IP21 Solution 8
3.5 EMC Filter for Long Motor Cables 9
4 Electrical Installation 10
4.1 Electrical Installation in General 10
4.2 Power Cables 10
4.3 Mains Connection 12
4.4 Motor Connection 12
4.5 Parallel Connection of Motors 12
4.6 Motor Cables 13
4.7 Motor Thermal Protection 13
4.8 Control Cables 13
4.9 Grounding 14
4.10 EMC Emission 15
4.11 Extra Protection 15
4.12 EMC-Correct Electrical Installation 16
4.13 Fuses 17
4.14 RFI Switch (VLT 2880-2882 Only) 17
5 Control Panel Operations 18
5.1 Programming 18
5.1.1 Control Unit 18
5.1.2 Control Keys 18
5.1.3 Manual Initialisation 18
Contents Quick Guide
MG28M202 Danfoss A/S © Rev. 2014-03-18 All rights reserved. 1

5.1.4 Display Readout States 19
5.1.5 Menu Mode 19
5.1.6 Quick Menu 19
5.1.7 Hand Auto 19
5.2 Motor Start 20
5.3 Connection Examples 20
5.4 Parameter List 20
6 Troubleshooting 25
6.1 Warning and Alarm Messages 25
7 Specifications 27
7.1 Mains Supply Data 27
7.1.1 Mains Supply 200-240 V 27
7.1.2 Mains Supply 380-480 V 27
7.2 General Specifications 28
7.3 Special Conditions 32
7.3.1 Aggressive Environments 32
7.3.2 Derating for Ambient Temperature 32
7.3.3 Derating for Low Air Pressure 32
7.3.4 Derating for Running at Low Speeds 32
7.3.5 Derating for Long Motor Cables 32
7.3.6 Derating for High Switch Frequency 32
Index 33
Contents Quick Guide
2 Danfoss A/S © Rev. 2014-03-18 All rights reserved. MG28M202

1 Introduction
1.1 Purpose of the Manual
The Quick Guide provides basic information for safe instal-
lation and commissioning of the frequency converter.
The Quick Guide is intended for use by qualified personnel.
Read and follow the Quick Guide to use the frequency
converter safely and professionally, and pay particular
attention to the safety instructions and general warnings.
Keep the Quick Guide available with the frequency
converter.
Illustration 1.1 Installation Example
For further examples of installation and detailed
descriptions on functions, refer to the VLT
®
2800 Design
Guide.
VLT®is a registered trademark.
1.2 Additional Resources
The Quick Guide provides the basic information for
installing and commissioning the frequency converter.
Other resources are available to understand advanced
frequency converter functions and programming:
•VLT 2800 Design Guide
•VLT 2800 Filter Instruction
•Brake Resistor Manual
•Profibus DP V1 Manual
•Profibus DP Manual
•VLT 2800 DeviceNet Manual
•Metasys N2 Manual
•Modbus RTU Manual
•Precise Stop
•Wobble Function
•VLT 2800 NEMA 1 Terminal Covering
•VLT 2800 LCP Remote-mounting Kit
•Protection against Electrical Hazards
1.3 Document and Software Version
Edition Remarks Software version
MG28M2 Replaces MG28M1 3.2X
1.4 Approvals and Certifications
The frequency converter complies with UL508C thermal
memory retention requirements. For more information,
refer to the section Motor Thermal Protection in the Design
Guide.
1.5 Disposal
Do not dispose of equipment containing
electrical components together with
domestic waste.
Collect it separately in accordance with
local and currently valid legislation.
Introduction Quick Guide
MG28M202 Danfoss A/S © Rev. 2014-03-18 All rights reserved. 3
11

2 Safety
2.1 Safety Symbols
The following symbols are used in this document:
WARNING
Indicates a potentially hazardous situation which could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which could
result in minor or moderate injury. It may also be used
to alert against unsafe practices.
NOTICE
Indicates important information, including situations that
may result in damage to equipment or property.
2.2 Qualified Personnel
Correct and reliable transport, storage, installation,
operation and maintenance are required for the trouble-
free and safe operation of the frequency converter. Only
qualified personnel is allowed to install or operate this
equipment.
Qualified personnel is defined as trained staff, who are
authorised to install, commission, and maintain equipment,
systems and circuits in accordance with pertinent laws and
regulations. Additionally, the personnel must be familiar
with the instructions and safety measures described in this
document.
2.3 Safety Precautions
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC power supply, or load
sharing. Failure to perform installation, start-up, and
maintenance by qualified personnel can result in death
or serious injury.
•Installation, start-up, and maintenance must be
performed by qualified personnel only.
WARNING
UNINTENDED START
When the frequency converter is connected to AC mains,
DC power supply, or load sharing, the motor may start at
any time. Unintended start during programming, service
or repair work can result in death, serious injury, or
property damage. The motor can start by means of an
external switch, a serial bus command, an input
reference signal from the LCP or LOP, via remote
operation using MCT 10 software, or after a cleared fault
condition.
To prevent unintended motor start:
•Disconnect the frequency converter from mains.
•Press [Off/Reset] on the LCP, before
programming parameters.
•The frequency converter, motor, and any driven
equipment must be fully wired and assembled
when the frequency converter is connected to
AC mains, DC power supply, or load sharing.
2.3.1 Discharge Time
WARNING
DISCHARGE TIME
The frequency converter contains DC-link capacitors,
which can remain charged even when the frequency
converter is not powered. Failure to wait the specified
time after power has been removed before performing
service or repair work, can result in death or serious
injury.
•Stop motor.
•Disconnect AC mains and remote DC-link power
supplies, including battery back-ups, UPS, and
DC-link connections to other frequency
converters.
•Disconnect or lock PM motor.
•Wait at least 4 minutes for the capacitors to
discharge fully, before performing any service
or repair work.
Safety Quick Guide
4 Danfoss A/S © Rev. 2014-03-18 All rights reserved. MG28M202
22

WARNING
LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the
frequency converter properly can result in death or
serious injury.
•Ensure correct grounding of the equipment by
a certified electrical installer.
WARNING
EQUIPMENT HAZARD
Contact with rotating shafts and electrical equipment
can result in death or serious injury.
•Ensure that only trained and qualified
personnel perform installation, start up, and
maintenance.
•Ensure that electrical work conforms to national
and local electrical codes.
•Follow the procedures in this manual.
CAUTION
INTERNAL FAILURE HAZARD
An internal failure in the frequency converter can result
in serious injury, when the frequency converter is not
properly closed.
•Before applying power, ensure all safety covers
are in place and securely fastened.
NOTICE
HIGH ALTITUDES
For installation at altitudes above 2,000 m, contact
Danfoss regarding PELV.
NOTICE
Use on Isolated Mains
For details about the use of the frequency converter on
isolated mains, refer to section RFI Switch in the Design
Guide.
Follow the recommendations regarding the installation
on IT-mains. Use relevant monitoring devices for IT-
mains to avoid damage.
Safety Quick Guide
MG28M202 Danfoss A/S © Rev. 2014-03-18 All rights reserved. 5
22

3 Mechanical Installation
3.1 Overview
VLT 2800 frequency converters allow side-by-side instal-
lation on a wall in any position as the units do not require
ventilation on the side. Because of the need for cooling,
there must be 100 mm free air passage above and below
the frequency converter.
All units with enclosure IP20 must be integrated in
cabinets and panels. IP20 is not suitable for remote
mounting. In some countries, for example in the USA, units
with enclosure NEMA 1 are approved for remote
mounting.
NOTICE
With the IP21 solution, all units require a minimum of
100 mm air on each side. This means that side-by-side
mounting is NOT allowed.
Illustration 3.1 Dimensions
Illustration 3.2 Mounting Holes
Mechanical Installation Quick Guide
6 Danfoss A/S © Rev. 2014-03-18 All rights reserved. MG28M202
33

Size mm A a B b C D E øa øb F øc
S2 - 200-240 V AC
VLT 2803-2815 200 191 75 60 168 7 5 4.5 8 4 4.5
D2 - 200-240 V AC
VLT 2803-2815 200 191 75 60 168 7 5 4.5 8 4 4.5
VLT 2822* 267.5 257 90 70 168 8 6 5.5 11 4.5 5.5
VLT 2840* 267.5 257 140 120 168 8 6 5.5 11 4.5 5.5
PD2 - 200-240 V AC
VLT 2822 267.5 257 140 120 168 8 6 5.5 11 4.5 5.5
VLT 2840 505 490 200 120 244 7.75 7.25 6.5 13 8 6.5
T2 - 200-240 V AC
VLT 2822 267.5 257 90 70 168 8 6 5.5 11 4.5 5.5
VLT 2840 267.5 257 140 120 168 8 6 5.5 11 4.5 5.5
T4 - 380-480 V AC
VLT 2805-2815 200 191 75 60 168 7 5 4.5 8 4 4.5
VLT 2822-2840 267.5 257 90 70 168 8 6 5.5 11 4.5 5.5
VLT 2855-2875 267.5 257 140 120 168 8 6 5.5 11 4.5 5.5
VLT 2880-2882 505 490 200 120 244 7.75 7.25 6.5 13 8 6.5
Table 3.1 Dimensions
Installation Procedures
1. Drill holes in accordance with the measurements given in Table 3.1. Note the difference in unit voltages.
2. Retighten all 4 screws.
3. Fit the decoupling plate to the power cables and the ground screw (terminal 95).
3.2 Motor Coils (195N3110) and RFI 1B Filter (195N3103)
Illustration 3.3 Motor Coils (195N3110)
Illustration 3.4 RFI 1B Filter (195N3103)
Mechanical Installation Quick Guide
MG28M202 Danfoss A/S © Rev. 2014-03-18 All rights reserved. 7
33

3.3 Terminal Cover
Illustration 3.5 shows the dimensions for NEMA 1 terminal
covers for VLT 2803-2875.
Dimension 'a' depends on the unit type.
Illustration 3.5 Terminal Cover Dimensions
Illustration 3.6 NEMA 1 Terminal Cover
3.4 IP21 Solution
Illustration 3.7 IP21 Solution
Type Code
number
A B C
VLT 2803-2815, 200-240 V
VLT 2805-2815, 380-480 V
195N2118 47 80 170
VLT 2822, 200-240 V
VLT 2822-2840, 380-480 V
195N2119 47 95 170
VLT 2840, 200-240 V
VLT 2822, PD2
VLT 2855-2875, 380-480 V
195N2120 47 145 170
VLT 2880-2882, 380-480 V
VLT 2840, PD2
195N2126 47 205 245
Table 3.2 Dimensions
Illustration 3.8 Dimensions for IP 21
Mechanical Installation Quick Guide
8 Danfoss A/S © Rev. 2014-03-18 All rights reserved. MG28M202
33

3.5 EMC Filter for Long Motor Cables
Illustration 3.9 Filter Dimensions
Filter Dimensions
192H4719
A B C øa D E F G
20 204 20 5.5 8 234 27.5 244
H I øb J K L M N
75 45 6 190 60 16 24 12
192H4720 A B C øa D E F G
20 273 20 5.5 8 303 25 313
H I øb J K L M N
90 50 6 257 70 16 24 12
192H4893 A B C øa D E F G
20 273 20 5.5 8 303 25 313
H I øb J K L M N
140 50 6 257 120 16 24 12
Table 3.3 Filter Dimensions
Mechanical Installation Quick Guide
MG28M202 Danfoss A/S © Rev. 2014-03-18 All rights reserved. 9
33

4 Electrical Installation
4.1 Electrical Installation in General
NOTICE
All cabling must comply with national and local
regulations on cable cross-sections and ambient
temperature. Copper conductors required, (60-75 arial
unicode ms°C) recommended.
Terminal tightening torques are described below:
VLT Terminals Torque
(Nm)
Torque,
Control
Cables (Nm)
2803-2875 Power mains brake 0.5-0.6
0.22-0.25
Ground 2-3
2880-2882,
2840 PD2
Power mains brake 1.2-1.5
Ground 2-3
4.2 Power Cables
NOTICE
The power terminals can be removed.
Connect mains to the mains terminals of the frequency
converter, i.e. L1, L2 and L3 and the ground connection to
terminal 95.
Illustration 4.1 Terminals
Illustration 4.2 VLT 2803-2815, 200-240 V
VLT 2805-2815, 380-480 V
Electrical Installation Quick Guide
10 Danfoss A/S © Rev. 2014-03-18 All rights reserved. MG28M202
44

Illustration 4.3 VLT 2822, 200-240 V
VLT 2822-2840, 380-480 V
Illustration 4.4 VLT 2840, 200-240 V
VLT 2822, 200-240 V - PD2
VLT 2855-2875, 380-480 V
Illustration 4.5 VLT 2840, 200-240 V, PD2
VLT 2880-2882, 380-480 V
Illustration 4.6 Electrical Connections VLT 2880-2882 and 2840
PD2
Fit screened/armoured cable from the motor to the motor
terminals of the frequency converter, i.e. U, V, W. The
screen ends in a screen connector.
Electrical Installation Quick Guide
MG28M202 Danfoss A/S © Rev. 2014-03-18 All rights reserved. 11
44

4.3 Mains Connection
NOTICE
At 1 x 220-240 V, the neutral wire must be attached to
terminal N (L2) and the phase wire must be connected to
terminal L1 (L1).
No. N(L2) L1(L1) (L3) Mains voltage 1 x 220-240 V
N L1
No. 95 Ground connection
Table 4.1 Mains Connection for 1 x 220-240 V
No. N(L2) L1(L1) (L3) Mains voltage 3 x 220-240 V
L2 L1 L3
No. 95 Ground connection
Table 4.2 Mains Connection for 3 x 220-240 V
No. 91 92 93 Mains voltage 3 x 380-480 V
L1 L2 L3
No. 95 Ground connection
Table 4.3 Mains Connection for 3 x 380-480 V
NOTICE
Check that the mains voltage fits the mains voltage of
the frequency converter, which can be seen from the
nameplate.
CAUTION
400-V units with RFI-filters may not be connected to
mains supplies in which the voltage between phase and
ground is more than 300 V. For the IT mains and the
delta ground, the mains voltage can exceed 300 V
between phase and ground. Units with type code R5 (IT
mains) can be connected to mains supplies with up to
400 V between phase and ground.
See chapter 7.2 General Specifications for correct
dimensioning of cable cross-section. See also the section
Galvanic isolation in the VLT
®
2800 Design Guide for further
details.
4.4 Motor Connection
Connect the motor to terminals 96, 97, 98. Connect ground
to terminal 99.
See chapter 7.2 General Specifications for correct
dimensioning of cable cross-section.
All types of 3-phase asynchronous standard motors can be
connected to a frequency converter. Normally, small
motors are star-connected (230/400 V, Δ/Y).
NOTICE
In motors without phase insulation paper, an LC filter
should be fitted on the output of the frequency
converter.
Illustration 4.7 Motor Connection
The factory setting is for clockwise rotation.
The direction of rotation can be changed by switching 2
phases on the motor terminals.
4.5 Parallel Connection of Motors
The frequency converter is able to control several motors
connected in parallel.
Consult the Design Guide for further information.
NOTICE
Ensure that the total cable length is appropriate. See the
chapter 4.10.1 EMC Emission to learn about the
relationship between cable length and EMC emission.
NOTICE
Parameter 107 Automatic motor adaption, AMT cannot be
used when motors are connected in parallel. Parameter
101 Torque characteristic must be set to Special motor
characteristics [8] when motors are connected in parallel.
Electrical Installation Quick Guide
12 Danfoss A/S © Rev. 2014-03-18 All rights reserved. MG28M202
44

4.6 Motor Cables
See chapter 7.2 General Specifications for correct
dimensioning of motor cable cross-section and length. See
chapter 4.10.1 EMC Emission for relationship between
length and EMC emission.
Always comply with national and local regulations on
cable cross-section.
NOTICE
If an unscreened/unarmoured cable is used, some EMC
requirements are not complied with. Refer to
chapter 4.10.1 EMC Emission for more details.
To comply with the EMC specifications regarding emission,
the motor cable must be screened/armoured, unless
otherwise stated for the RFI filter in question. It is
important to keep the motor cable as short as possible so
as to reduce the noise level and leakage currents to a
minimum. Connect the motor cable screen to the metal
cabinet of the frequency converter and to the metal
cabinet of the motor. Make the screen connections with
the biggest possible surface area (cable clamp). This is
enabled by different installation devices in different
frequency converters. Avoid mounting with twisted screen
ends (pigtails), since these spoil the screening effect at
high frequencies. If it is necessary to break the screen to
install a motor isolator or motor relay, the screen must be
continued at the lowest possible HF impedance.
4.7 Motor Thermal Protection
The electronic thermal relay in the frequency converter has
received the UL-approval for single motor protection,
when parameter 128 Motor thermal protection has been set
for ETR Trip and parameter 105 Motor current, IM, N has been
programmed to the rated motor current (see motor
nameplate).
4.8 Control Cables
Remove the front cover underneath the control panel.
Place a jumper between terminals 12 and 27.
Control cables must be screened/armoured. The screen
must be connected to the frequency converter chassis with
a clamp. Normally, the screen must also be connected to
the chassis of the controlling unit (use the instructions for
the unit in question). In connection with very long control
cables and analog signals, in rare cases depending on the
installation, 50/60 Hz ground loops may occur because of
noise transmitted from mains supply cables. In this
connection, it may be necessary to break the screen and
possibly insert a 100 nF capacitor between the screen and
the chassis.
See section Grounding of Screened/Armoured control cables
in the Design Guide for the correct termination of control
cables.
Illustration 4.8 Control Cable Connection
Electrical Installation Quick Guide
MG28M202 Danfoss A/S © Rev. 2014-03-18 All rights reserved. 13
44

No. Function
01-03 Relay outputs 01-03 can be used for indicating status
and alarms/warnings.
12 24 V DC voltage supply.
18-33 Digital inputs.
20, 55 Common frame for input and output terminals.
42 Analog output for displaying frequency, reference,
current or torque.
461) Digital output for displaying status, warnings or alarms,
as well as frequency output.
50 +10 V DC supply voltage for potentiometer or thermistor.
53 Analogue voltage input 0-10 V DC.
60 Analogue current input 0/4-20 mA.
671) + 5 V DC supply voltage to Profibus.
68,
691)
RS-485, Serial communication.
701) Frame for terminals 67, 68 and 69. Normally, this
terminal is not to be used.
Table 4.4 Control Signals
1) The terminals are not valid for DeviceNet. See the DeviceNet
manual for further details.
See parameter 323 Relay output for programming of relay
output.
No. 01-02 1-2 make (NO - Normally Open)
01-03 1-3 break (NC - Normally Closed)
Table 4.5 Relay Contacts
NOTICE
The cable jacket for the relay must cover the first row of
control card terminals - otherwise the galvanic isolation
(PELV) cannot be maintained. Max. cable diameter: 4
mm.
4.9 Grounding
Comply with the following at installation:
•Safety grouding: The frequency converter has a
high leakage current and must be grounded
properly for safety. Follow all local safety
regulations.
•High frequency grounding: Keep grounding
connections as short as possible.
Connect all grounding systems to ensure the lowest
possible conductor impedance. The lowest possible
conductor impedance is achieved by keeping the
conductor as short as possible and by grounding with the
greatest possible surface area. If multiple frequency
converters are installed in a cabinet, use the metal cabinet
backplate as a joint ground reference plate. Fit the
frequency converters to the backplate at the lowest
possible impedance.
To achieve low impedance, connect the frequency
converter to the backplate with the frequency converter
fastening bolts. The backplate must be free from paint.
Electrical Installation Quick Guide
14 Danfoss A/S © Rev. 2014-03-18 All rights reserved. MG28M202
44

4.10 EMC Emission
The following system results are achieved on a system consisting of a VLT®2800 frequency converter with screened/
armoured control cable, control box with potentiometer, screened/armoured motor cable and screened/armoured brake
cable as well as an LCP2 with cable.
VLT 2803-2875 Emission
Industrial environment Residential, commercial and light industry
EN 55011 class 1A EN 55011 class 1B
Set-up Cable-borne
150 kHz-30 MHz Radiated 30 MHz-1 GHz Cable-borne 150 kHz-30 MHz Radiated 30 MHz-1 GHz
3 x 480 V version with 1A RFI
filter Yes 25 m screened/
armoured
Yes
25 m screened/armoured No No
3 x 480 V version with 1A RFI
filter (R5: For IT mains) Yes 5 m screened/armoured Yes 5 m screened/armoured No No
1 x 200 V version with 1A RFI
filter1)
Yes
40 m screened/
armoured
Yes
40 m screened/armoured Yes 15 m screened/armoured No
3 x 200 V version with 1A RFI
filter (R4: For use with RCD) Yes 20 m screened/
armoured
Yes
20 m screened/armoured Yes 7 m screened/armoured No
3 x 480 V version with 1A+1B
RFI filter Yes 50 m screened/
armoured
Yes
50 m screened/armoured Yes 25 m screened/armoured No
1 x 200 V version with 1A+1B
RFI filter1)
Yes
100 m screened/
armoured
Yes
100 m screened/
armoured
Yes
40 m screened/armoured No
VLT 2880-2882 Emission
Industrial environment Residential, commerce and light industry
EN 55011 class 1A EN 55011 class 1B
Set-up Cable-borne
150 kHz-30 MHz Radiated 30 MHz-1 GHz Cable-borne 150 kHz-30 MHz Radiated 30 MHz-1GHz
3 x 480 V version with 1B RFI
filter Yes 50 m Yes 50 m Yes 50 m No
Table 4.6 EMC Emission Compliance
1) For VLT 2822-2840 3 x 200-240 V, the same values apply as for the 480 V version with 1A RFI filter.
•EN 55011: Emission
Limits and methods of measurement of radio disturbance characteristics of industrial, scientific and medical (ISM)
high-frequency equipment.
- Class 1A: Equipment used in an industrial environment.
- Class 1B: Equipment used in areas with a public supply network (residential, commerce and light
industry.
4.11 Extra Protection
RCD (Residual Current Device) relays, RCD relays, ELCBs
(Earth Leakage Circuit Breaker), multiple protective
grounding or grounding can be used as extra protection,
provided that local safety regulations are complied with.
3-phase VLT frequency converters require an RCD type B. If
an RFI filter is mounted in the frequency converter, and
either the switch of the RCD or a manually operated switch
is used to connect the frequency converter to the mains
voltage, a time delay of minimum 40 ms is required (RCD
type B).
If no RFI filter is mounted, or a CI contactor is used for
mains connection, no time delay is required.
Single-phase VLT frequency converters require an RCD type
A. There is no particular need for a time delay whether RFI
filters are mounted or not.
See application note Protection against Electrical Hazards
for further information on ELCBs.
Electrical Installation Quick Guide
MG28M202 Danfoss A/S © Rev. 2014-03-18 All rights reserved. 15
44

4.12 EMC-Correct Electrical Installation
General points to observe to ensure EMC-correct electrical
installation.
•Use only screened/armoured motor cables and
screened/armoured control cables.
•Connect the screen to ground at both ends.
•Avoid installation with twisted screen ends
(pigtails), since this ruins the screening effect at
high frequencies. Use cable clamps instead.
•It is important to ensure good electrical contact
from the installation plate through the installation
screws to the metal cabinet of the frequency
converter.
•Use starwashers and galvanically conductive
installation plates.
•Do not use unscreened/unarmoured motor cables
in the installation cabinets.
Illustration 4.9 shows EMC-correct electrical installation, in
which the frequency converter has been fitted in an instal-
lation cabinet and connected to a PLC.
Illustration 4.9 Example of an EMC-correct Electrical Installation
Electrical Installation Quick Guide
16 Danfoss A/S © Rev. 2014-03-18 All rights reserved. MG28M202
44

4.13 Fuses
Branch circuit protection
To protect the installation against electrical and fire hazard,
all branch circuits in an installation, switch gear, machines
etc., must be short-circuited and overcurrent protected
according to national/international regulations.
Short circuit protection
Danfoss recommends using the fuses mentioned in
Table 4.7 to protect service personnel and equipment in
case of an internal failure in the unit or short-circuit on
DC-link. The frequency converter provides full short-circuit
protection in case of a short circuit on the motor or brake
output.
Overcurrent protection
Provide overload protection to avoid overheating of the
cables in the installation. Overcurrent protection must
always be carried out according to national regulations.
Fuses must be designed for protection in a circuit capable
of supplying a maximum of 100,000 Arms (symmetrical),
480 V maximum.
Non
If UL/cUL is not to be complied with, Danfoss recommends
using the fuses mentioned in Table 4.7, which ensures
compliance with EN50178/IEC61800-5-1.
In case of malfunction, not following the fuse recommen-
dation may result in damage to the frequency converter.
Alternative fuses 380-500 V drives
VLT 2800 Bussmann
E52273
Bussmann
E4273
Bussmann
E4273
Bussmann
E4273
Bussmann
E4273
Bussmann
E4273
SIBA
E180276
Little Fuse
E81895
Ferraz-
Shawmut
E163267/
E2137
Ferraz-
Shawmut
E163267/
E2137
RK1/JDDZ J/JDDZ T/JDDZ CC/JDDZ CC/JDDZ CC/JDDZ RK1/JDDZ RK1/JDDZ CC/JDDZ RK1/JDDZ
2805-2820 KTS-R20 JKS-20 JJS-20 FNQ-R-20 KTK-R-20 LP-CC-20 5017906-0
20
KLS-R20 ATM-R25 A6K-20R
2855-2875 KTS-R25 JKS-25 JJS-25 5017906-0
25
KLS-R25 ATM-R20 A6K-25R
2880-2882 KTS-R50 JKS-50 JJS-50 5014006-0
50
KLS-R50 - A6K-50R
Alternative Fuses 200-240 V drives
2803-2822 KTN-R20 JKS-20 JJN-20 5017906-0
20
KLS-R20 ATM-R25 A6K-20R
2840 KTN-R25 JKS-25 JJN-25 5017906-0
25
KLS-R25 ATM-R20 A6K-25R
Table 4.7 Prefuses for UL/cUL
4.14 RFI Switch (VLT 2880-2882 Only)
Mains supply isolated from earth
If the frequency converter is supplied from an isolated
mains source ( IT mains) or TT/TN-S mains with grounded
leg, the RFI switch is recommended to be turned off (OFF).
For further reference, see IEC 364-3. If optimum EMC
performance is needed, parallel motors are connected or
the motor cable length is above 25 m, set the switch in
ON position.
In OFF position, the internal RFI capacities (filter capacitors)
between the chassis and the intermediate circuit are cut
off to avoid damage to the intermediate circuit and to
reduce the ground capacity currents (according to IEC
61800-3).
Also refer to the application note VLT on IT mains. It is
important to use isolation monitors that are capable for
use together with power electronics (IEC 61557-8).
NOTICE
The RFI switch is not to be operated with mains
connected to the unit. Check that the mains supply has
been disconnected before operating the RFI switch.
The RFI switch disconnects the capacitors galvanically
from ground.
Remove the switch Mk9, placed next to terminal 96, to
disconnect the RFI-filter.
Electrical Installation Quick Guide
MG28M202 Danfoss A/S © Rev. 2014-03-18 All rights reserved. 17
44

5 Control Panel Operations
5.1 Programming
5.1.1 Control Unit
On the front of the frequency converter there is a control
panel divided into 4 sections.
1. 6-digit LED display.
2. Keys for changing parameters and shifting display
function.
3. Indicator lights.
4. Keys for local operation.
Warning yellow
Alarm red
Trip locked yellow and red
Table 5.1 LED Indication
Illustration 5.1 Control Panel
All data is shown in a 6-digit LED display capable of
showing one item of operating data continuously during
normal operation. As a supplement to the display, there
are 3 indicator lights for indication of mains connection
(ON), warning (WARNING) and alarm (ALARM). Most of the
frequency converter's parameter set-ups can be changed
immediately via the control panel, unless this function has
been programmed as [1] Locked via parameter 018 Lock for
data changes.
5.1.2 Control Keys
[QUICK MENU] allows access to the parameters used for
the Quick menu.
The [QUICK MENU] key is also used if a change to a
parameter value is not to be implemented.
[CHANGE DATA] is used for changing a setting.
If the display shows 3 dots at the right, the parameter
value has more than 3 digits. To see the value, press
[CHANGE DATA]
The [CHANGE DATA] key is also used for confirming a
change of parameter settings.
[+]/[-]are used for selecting parameters and for changing
parameter values.
These keys are also used in Display mode for selecting the
display of an operating value.
The [QUICK MENU] and [+] keys must be pressed at the
same time to give access to all parameters. See Menu
mode.
[STOP/RESET] is used for stopping the connected motor or
for resetting the frequency converter after a trip.
Can be selected as [1] Active or [0] Not active via parameter
014 Local stop/reset. In Display mode, the display flashes if
the stop function is activated.
NOTICE
If the [STOP/RESET] key is set to[0] Not active in
parameter 014 Local stop/reset, and there is no stop
command via the digital inputs or serial communication,
the motor can only be stopped by disconnecting the
mains voltage to the frequency converter.
[START] is used for starting the frequency converter. It is
always active, but the [START] key cannot override a stop
command.
5.1.3 Manual Initialisation
Disconnect mains voltage. Press [QUICK MENU]/[+]/
[CHANGE DATA] while simultaneously reconnecting the
mains voltage. Release the keys; the frequency converter is
now programmed for the factory setting.
Control Panel Operations Quick Guide
18 Danfoss A/S © Rev. 2014-03-18 All rights reserved. MG28M202
55