Danfoss VLT 2000, VLT 2015, VLT 2030, VLT 2010, VLT 2020 Series Manual

...

Download

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Contents

Section 1

■■

■

InstallationInstallation

Installation

Section 2

■■

■

After installationAfter installation

After installation

Section 3

■■

■

Facts about VLFacts about VL

Facts about VL

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Installation has been written for personnel who will unpack the VLT frequency converter and carry out mechanical and electrical installation.

Installation makes it easy and safe for you to install the VLT frequency converter, just follow the instructions on the next pages.

After Installation has been written for personnel who are to set up the VLT frequency converter, when it is to be commissioned. The VLT has a number of factory settings. You can choose the settings to match your plant (application). The initial settings are described in chapter 1.

When you start your setting the mechanical and electrical installation has been done. If you want to check the electrical installation you can do that on the basis of the survey of terminals.

To go on with the settings you must know the values of the different parameters. Typically it is the planning engineer or technician who determines the values on the basis of the information given in the section

Facts about VLT.

Facts about VLT is written for users of VLT frequency converters for large plants.

Facts about VLT you can read how to size a plant, how to select the right VLT on the basis of the technical data, how to carry out the electrical installation, the mechanical installation, etc.

It will also appear what standards the VLT frequency converter complies with and what safety measures you should take before you start.

Facts about VLT is your work of reference, so do keep it within reach.

When you read the manual please note the following symbols:

About this manual

Section 1

Section 2

Section 3

General warning

Pay special attention here.

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

■

Safety rules

Warning against improper start

1. The motor can be stopped using digital commands, bus commands, references or local stop, while the frequency converter is connected to the mains. If personal safety requires elimination of any possibility of unintended start,

these stops will not

be sufficient.

2. The motor can start during parameter operation. Therefore

always activate the “Stop/Reset” key

before changiing data.

A stopped motor can start if a fault occurs in the electronics of the frequency converter or after a temporary overload, mains fault or faulty motor connection.

For the North American market

CAUTION: It is the responsibility of the user or person installing the drive to provide proper grounding and branch circuit protection for incoming power and motor overload according to National Electrical Codes (NEC) and local codes.

The Electronic Thermal Relay (ETR) in UL listed VLTs provides class 20 motor overload protection in accordance with NEC in single motor applications, when parameter 315 is set to Trip [2] and parameter 107 is set to nominal motor (nameplate) current.

The frequency converter contains dangerous

voltages when connected to the mains. Improper connection of the motor or the frequency converter may cause equipment failure, serious injury or death.

Therefore follow the directions in this manual, as well as local and national safety rules.

Touching the electrical parts, even when the power supply has been switched off, can cause serious injury or death.

Wait at least 4 minutes after switching off before touching any electrical parts.

These rules concern your safety

1. When repairs are undertaken the power supply to

the frequency converter must be disconnected.

2. The

“Stop/Reset” key on the keyboard of the frequency converter does not disconnect the power supply and may therefore not be used as a safety switch.

3. The unit must be properly grounded, the user must be protected against supply voltage and the motor against overload according to national and local codes.

4. The leakage currents to ground are higher than 3 mA.

5. The factory setting does

not incorporate protection against motor overload. For this function parameter 315 is set to data value Trip [2] or data value Warning [1]. Note: This function is initialised at

1.16 x rated motor current and rated motor frequency (see page 63).

6. Do

not remove the motor and mains terminals, when the unit is connected to the mains. Ensure that the power supply has been switched off, before you remove the motor and mains terminals.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Installation

Chapter 1 ■ Before you start ........................................... Page 6

■ Mechanical installation................................. Page 6

■ Electrical installation .................................... Page 6

■ EMC-correct installation .............................. Page 9

■ General.......................................................Page 9

■ Instructions for installation .......................... Page 9

■ For further information ............................... Page 11

■ Installation guide

VLT 2000 with built-in compact RFI filter ... Page 12

■ Technical data VLT 2000 with built-in compact RFI-filter ... Page 12

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Before you start

Read the safety rules on

pagepage

page 4 before you start.

Mechanical installation

Item 1 Drilling template (enclosed in box)

For sizing and drilling of holes you can use the enclosed Drilling Template.

Ensure min. 100 mm (10 cm) free air space above and below the VLT frequency converter. This also applies when a module has been mounted. Make sure that the ambient temperature does not exceed 40°C.

Item 2 Side by side mounting

VLT frequency converters can be mounted side by side, without any space between them.

Item 3 Module

If you want to use a module (to be placed underneath) you must take the physical dimensions into account.

Electrical installation

Item 1 Prefuses

Choose the right prefuses:

Mains supply 1 x 220/230/240 V

3 x 208/220/230/240 V VLT 2010 Max. 10A VLT 2015 Max. 16 A VLT 2020 Max. 20 A VLT 2030 Max. 20 A VLT 2040 Max. 20 A VLT 2050 Max. 25 A

See Special conditions: Cut-in current

That I have done

Mains supply 3 x 380-460 V

VLT 2020 Max. 16 A VLT 2025 Max. 16 A VLT 2030 Max. 16 A VLT 2040 Max. 16 A VLT 2050 Max. 16 A VLT 2060 Max. 20 A

Installation

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Electrical installation (continued)

Item 2 Extra protection

If you want extra protection, pay attention to the following:

As extra protection, error voltage relays or neutral grounding can be used. However, the installation must comply with local health and safety standards. An earth fault can introduce a direct current in the discharge current. Any ELCB relay used must comply with local regulations. The relays must be suitable to protect three-phase equipment with bridge rectifier and short discharge on power-up.

Item 3 Motor, mains and brake cables

To comply with the stated EMC emission specifications, screened motor cable must

not be used. However, a precondition is that an RFI filter module is installed to comply with the EMC emission specifications.

Observe the following max. cross sections for motor, mains and brake cables:

■

That I have done

Mains supply 1 x 220/230/240 V

3 x 208/220/230/240 V

VLT 2010 Max. 4 mm

VLT 2015 Max. 4 mm

VLT 2020 Max. 4 mm

VLT 2030 Max. 4 mm

VLT 2040 Max. 4 mm

VLT 2050 Max. 4 mm

Installation

▲▲

▲

Cable relief fitting 195H6129 Option

Mains supply 3 x 380-460 V

VLT 2020 Max. 4 mm

VLT 2025 Max. 4 mm

VLT 2030 Max. 4 mm

VLT 2040 Max. 4 mm

VLT 2050 Max. 4 mm

VLT 2060 Max. 4 mm

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Electrical installation (continued)

Item 4 Control cables

The cables used for control cables must be screened to comply with the stated EMC emission specifications. Connect the screen from the control cables to terminal 61 (ground).

Observe the following max. cross sections for control cables:

That I have done

Mains supply 1 x 220/230/240 V

3 x 208/220/230/240 V

VLT 2010 Max. 1.5 mm

VLT 2015 Max. 1.5 mm

VLT 2020 Max. 1.5 mm

VLT 2030 Max. 1.5 mm

VLT 2040 Max. 1.5 mm

VLT 2050 Max. 1.5 mm

Mains supply 3 x 380-460 V

VLT 2020 Max. 1.5 mm

VLT 2025 Max. 1.5 mm

VLT 2030 Max. 1.5 mm

VLT 2040 Max. 1.5 mm

VLT 2050 Max. 1.5 mm

VLT 2060 Max. 1.5 mm

Installation

Cable relief fitting 195H6129

▲▲

▲

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Installation

EMC correct installation

A number of factors must be considered in order to achieve EMC correct installation of the VLT 2000 frequency converter.

General

The basic VLT 2000 units do not comply with any EMC emission specifications, since no EMC filter (RFI filter) is incorporated in the basic units. Therefore it is necessary to install an

RFI and motor filter module to comply with EMC emission specifications. VLT Series 2000 is available with built-in RFI filter that fulfils the EMC emission requirements. In addition to reducing the mains interference, the filters also reduce the interference radiating from the unscreened motor cable. As far as the motor cable is concerned, only interference above 30 MHz is reduced (ref. EN 55011-1A).

To reduce the electromagnetic noise level from the total system as far as possible (frequency converter and motor installation), it is important to make the motor and brake cables as short as possible. Cables having a sensitive noise level may not be led together with motor and brake cables.

How to install

Units with RFI and motor filter module: When the RFI and motor filter module is installed it is recommended to use

unscreened motor cable, since

this gives the lowest electromagnetic noise level.

Control cable: The control cable must be screened. The screen must be installed under the screen clamp on the screen termination bracket. Mounting with twisted screen ends (Pigtails) should be avoided, as this will destroy the screen effect at high frequencies. Normally, the screen should also be connected to the base of the controlling appliance (follow the instructions for use of the appliance in question). In connection with very long control cables and analogue signals, 50 Hz ripple loops may occur in rare cases, depending on the installation. This is because of interference coupling from the mains supply cables. In this connection it can be necessary to break the screen or possible insert a 100nF condenser between screen and base.

■

Cable for serial communication: The cable for serial communication should be screened. The screen should be installed using a screen clamp on the VLT frequency converter (see the instruction for installation, page 10, point B ).

Motor cable: For the motor either screened or unscreened cable can be used. In connection with installation of the RFI and motor filter module it is recommended to use unscreened motor cable. With screened motor cable, the screen must be installed under the cable clamp on the cable relief fitting. Mounting with twisted screen ends (Pigtails) should be avoided as this will destroy the screen effect at high frequences. In principle the motor cable screen may not be interrupted and it may not be earth connected. If it is necessary to interrupt the screen to mount a motor starter or motor relays, the screen must continue with an impedance which is as low as possible. The EMC emission specifications are complied with by using up to 100 m of unscreened motor cable. If screened cable is used the demand for conducted noise (150 kHz - 30 MHz) cannot be observed.

Brake cable: Screened cable must be used for the brake resistor. The screen must be installed under the cable clamp on the cable relief fitting. (See page 10 point E ). Avoid using screen pigtails. Use brake cable lengths of up to 5 m.

Sensitive signal cables: Cables having a sensitive noise level may not be led together with motor and brake cables.

Equalising currents: Efforts should be made to avoid possible equalising currents that may occur when the control cable screen is connected to the base (earthed) at both ends. Equalising currents occur because of voltage differences between the VLT frequency converter base and the base of the controlling appliance. They can be avoided by making a tight fit with the cabinet base rear plate, thereby ensuring that any equalising currents will run via the base rear plates and their joints, not via the cable screens.

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Installation

Three-phase mains connection

Single-phase mains connection

Between PC and VLT frequency converter

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

VLT 2010-2030, 1/3 x 208-240 V and VLT 20202060* 3 x 380-460 V with RFI and motor filter module or LC and RFI filter module:

If VLT frequency converters are mounted on an electrically conductive, metal rear plate, good electrical connection between the VLT and the rear plate is to be ensured (use earth screw (item A in the drawing)).

If the VLT frequency converter is mounted on a nonconductive rear plate, it is to be ensured that there is good grounding to the earth screw (item A in the drawing).

For further information

When you have finished installing the VLT frequency converter, see the section

After installation for infor-

mation about how to operate the VLT frequency

converter. You will also get information about what parameters to choose to ensure optimum operation.

*) VLT 2060 Max. 415 V

Installation

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Following this installation guide the VLT® 2000 units with built-in compact RFI filter comply with the EMC requirements according to EN 55011 group 1A.

Technical data

The technical data on this page only apply to VLT

2010, 0.37 kW, VLT® 2015, 0.55 kW and VLT

2020,0.75 kW.with built in compact RFI filter.

■■

■

Cable type: Screened Max. length: 20 m Mains supply: 1 x 220-240 V

Installation guide

Clamp to secure cables and cable screen type 195H6129 is delivered with the above units.

Mains supply connection:Mains supply connection:

Mains supply connection: Cable is secured in cable relief fitting. Earth wire is secured in the earth screw on the frequency converter.

Motor cable connection:Motor cable connection:

Motor cable connection: Motor cable and screen is secured in cable relief fitting and the wires are connected in the motor plug.

■■

■

Installation

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

After installation

Chapter 1 ■ Quick Setup,

If you are familiar with a VLT ...................... Page 14

■ Quick Setup,

If you are not familiar with a VLT ................ Page 14

■ A simple connection example .................... Page 14

■ How to program ........................................ Page 15

■ Survey of terminals .................................... Page 16

■ Description of connection terminals............ Page 16

■ How to check connection of

control cables ............................................. Page 17

■ Prefuses .................................................... Page 17

■ Cables ....................................................... Page 17

■ Check grounding ....................................... Page 17

■ Commissioning and testing ....................... Page 18

■ Basic settings ............................................ Page 18

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Quick Setup

If you are familiar with a VLT

If you know the VLT and how to move round in the menus and parameters, you can go directly to steps 1-9 overleaf to get started.

Quick Set

If you are not familiar with a VLT

If you have never operated a VLT frequency converter before, you can learn it on the basis of the instructions on page 15.

Connection example

■

A simple connection example

In the figure below you can see a simple connection example based on the Quick Setup programming overleaf.

After installation

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

How to program

The Quick Setup shown is based on the assumption that you want your VLT to operate with the following setup:

1. External start/stop

2. Potentiometer connected for external speed control

3. Option to change rotation direction

4. Option to select a fixed speed (Jog)

If you use a brake module, you must program one parameter more, and two more if you

want local operation via the display keys. This will appear from the two tables at the bottom. To store the data press the “menu” key!

When you have connected your VLT, as described on the previous page, you must program a few parameeters.

Perform steps 1-9 for Quick Setup.

After installation

Standard motor with constant torque load without brake module on the frequency converter

Step Parameter Designation Settings Display indication 1 000 Language Choose English ENGLISH 2 103 Motor power Read motor plate 3 104 Motor voltage Read motor plate 4 105 Motor frequency Read motor plate 5 201 Min. frequency Set wanted frequency 6 202 Max. frequency Set wanted frequency 7 215 Ramp up 1 Set wanted ramping time 8 216 Ramp down 1 Set wanted ramping time 9 Start This is done by supplying terminals 18 and 27

the frequency with 24 V DC from the frequency converter’s terminal 12 converter or by using an external 24 V DC voltage

If a brake module is mounted, make the following settings

Step Parameter Designation Settings Display indication 1 300 Brake function If a brake module is used, choose Applied APPLIED 2 Start This is done by supplying terminals 18 and 27

the frequency with 24 V DC from the frequency converter’s terminal 12, converter or by using an external 24 V DC voltage

If you want local operation and start, make the following settings

Step Parameter Designation Settings Display indication 1 003 Operation site Choose Local LOCAL 2 004 Local reference Record wanted output frequency by means

of the “+” and “−” keys

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Survey of terminals

Below you will see a survey of all the terminals of a VLT frequency converter (3 x 380-460 V).

After installation

Description of connection terminals

Terminal 12: Internal voltage supply 24 V DC activates digital inputs such as Start/stop, Jog or Quick stop.

Terminal 18: Start/stop (Digital input) When 24 V DC is applied the motor starts

on condit-

ion that

− digital input 27 (Quick stop) is connected

to 24 V DC.

− you have made no local stop command

(“Stop/reset” key).

− f

Max

is > 0 Hz.

− a reference signal has been given (see para. 402). Terminal 19: Reversing (Digital input)

When 24 V DC is applied to terminal 19, the motor starts reversing, either at once or after a stop command. If you have chosen pulse start in para. 402 (terminal 18), the start reversing function of para. 403 is automatically a pulse-activated function.

Terminal 20: Digital common This terminal is the reference for all digital signals, including bus.

Terminal 27: Stop (Digital input) When you apply 0 V you can give different stop signals. See also para. 404.

Terminal 29: Jogging (Digital input) This terminal allows you to activate a fixed preprogrammed speed. See para. 405.

Terminal 46: Output Using parameter 408 you can choose between different output signals. The output is an open collector output, and a pull-up resistor of min. 600 ohm must therefore be connected to terminal 12 (+24 V).

Terminal 50: Internal voltage supply With 10 V DC voltage you can set an analogue control signal using a 1 kohm potentiometer with terminal 55 as reference.

Terminal 53: Analogue control voltage Using parameter 412 you can choose between 0 +10 V DC or +10 - 0 V DC analogue voltage. The terminal is used together with terminals 50 and 55. The voltage value determines the output frequency and thus also the speed of the motor.

Terminal 55: Analogue common Is used together with terminals 50 and 53 or together with terminal 60.

Terminal 60: Analogue control current Using parameter 413 you can choose between four different input signals:

0-20 mA, 4-20 mA, 20-0 mA or 20-4 mA.

The current value determines the output frequency. Terminal 61: Not used

Terminals 71-72: RS 232 port Connect the terminals to a PC, if you want to control the VLT frequency converter via PC software. Terminal 20 acts as digital common.

Terminals 81-82: Brake resistor By means of these terminals you can connect the brake resistor on units with brake function. Note the live voltage 550 V DC.

The control signals and the terminals for the brake module are described at the bottom of this page.

Mains Motor

Br.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

How to check connection of control cables

The VLT frequency converter must be connected so that it is possible to control it via the different signal inputs at the top of the enclosure.

Terminals 01-03: Relay output Max. 250 V, max. 2 A. Relay: Not activated Terminal 12: Supply to digital inputs 24 V DC, max. 140 mA Terminals 18-19: Digital inputs 0-24 V, Ri=2 kohm (max. 37 V for 10 sec.)

27-29 (min. on-time 80 ms.) Terminal 46: Digital output signal (open collector) Max. 24 V DC, max. 40 mA, min. 600 ohm Terminal 50: Supply to 1 kohm potentiometer 10 V DC, max. 12 mA Terminal 53 Analogue control voltage +0 - 10 V DC, Ri=10 kohm, +10 - 0 V Terminal 60: Analogue control current 0/4-20 mA, Ri=226 ohm, 20-0/4 mA Terminals 71/72: RS 232 standard bus 71 RXD, 72 TXD, 20 dig. ref. Terminals 81/82: Used in connection with brake resistor Terminal 20: Digital common Must be used as reference for all digital

signals

Terminal 55: Analogue common Must be used as reference for all analogue

signals.

Prefuses

Prefuses must be installed in the mains supply to the frequency converter.

Cables

The cables to control signals and brake resistor must be screened. It is recommended to use unscreened motor cable.

Motor/mains cables (max. cable cross-section) Mains supply 1/ 3 x 208/220/230/240 V Mains supply 3 x 380-460 V 2010 2015 2020 2030 2040 2050 2020 2025 2030 2040 2050 2060* 4 mm2 for all VLT 2000 Series types 4 mm2 for all VLT 2000 Series types

Control cables (max. cable cross-section) Mains supply 1/ 3 x 208//220/230/240 V Mains supply 3 x 380-460 V 2010 2015 2020 2030 2040 2050 2020 2025 2030 2040 2050 2060*

1.5 mm2 for all VLT 2000 Series types 1.5 mm2 for all VLT 2000 Series types

How to check the grounding

The grounded line must be connected to terminal 94 (PE). If you use a thick cable this must be connected to the 6 mm large screw (terminal 95) in the bottom of the VLT frequency converter.

If you use screened cables, the screen must be connected to the screen termination bracket of the VLT frequency converter and brake resistor.

(Max. sizes)(Max. sizes)

(Max. sizes) Mains supply 1/3 x 208/220/230/240 V Mains supply 3 x 380-460 V

2010 2015 2020 2030 2040 2050 2020 2025 2030 2040 2050 2060* 10 A 16 A 20 A 20 A 20 A 25 A 16 A 16 A 16 A 16 A 16 A 20 A

After installation

*) VLT 2060: Max. 415V

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

c) Make a quick stop by means of disconnecting

between terminal 27 and terminal 12. Example of display indication:

During the simulation you can see that the VLT frequency converter reacts by watching the display indications.

If no external control has been

connected, you can choose to simulate the function of the VLT frequency converter locally via the keyboard. See description at the bottom of page 31.

5. Press the “Stop” key to stop the VLT frequency converter

before you connect the motor.

6. Test the whole system (repeat steps 4 and 5) with the motor connected to check the direction of rotation.

Commissioning and testing

When the VLT frequency converter has been connected to control signals, you may want to test the system. This following test is not suitable if you use the built-in PI controller.

1. Disconnect the motor from the VLT frequency converter.

2. Connect the VLT frequency converter to the mains.

3. Make the necessary settings such as min./max. frequency and connect the necessary control signals, possibly via PLC.

As a minimum you must set the parameters and connect the control signals as described in chapter 1, Quick Setup.

4. Make a simulation without motor: a) Give a start signal via a contact to terminal 18.

Example of display indication:

b) The speed (frequency) can be changed by

means of the potentiometer connected. Example of display indication:

After installation

00,0 Hz

FREQUENCY STOP 1

23,7 Hz

FREQUENCY ➜ FUNCTION OK 1

30,0 Hz

FREQUENCY ➜ FUNCTION OK 1

Basic settings

The VLT frequency converter has been preset from the factory so that normally it will function after a few data values are recorded/changed. See Quick Setup on page 15.

The factory settings of the VLT frequency converter are listed on page

105.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Chapter 1 ■ How the VLT works ................................... Page 21

Technology

Chapter 2 ■ How to size your VLT ................................. Page 29

Product range, sizing, technical data

Chapter 3 ■ How to install your VLT .............................. Page 41

The connection terminals, dimensions, mechanical installation, electrical installation, and motor connection

Chapter 4 ■ How to operate your VLT ........................... Page 45

The control panel and the structure of the menus

Chapter 5 ■ The control possibilities of the VLT ............. Page 51

The menu groups and the various parameters

Chapter 6Chapter 6

Chapter 6 ■ Description of parameters ......................... Page 59

Chapter 7 ■ Display messages ..................................... Page 81

Status, alarm and warning and reset messages

Chapter 8 ■ Special conditions ..................................... Page 85

CE-labelling EMC, extreme operational conditions, electrical noise, air humidity, efficiency and du/dt measurements

Chapter 9 ■ Factory settings and service ...................... Page 97

Factory settings and fault location Form to note down the VLT parameter settings

Chapter 10 ■ Subject index .......................................... Page 107

Contents

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Chapter 1 ■ How the VLT is built up .............................. Page 22

■ The Danfoss VVC principle ........................ Page 23

■ Factory-programmed optimization............. Page 24

■ Control accuracy ....................................... Page 25

■ Protection against mains disturbance........ Page 25

■ Galvanic isolation....................................... Page 25

■ Advanced motor protection ....................... Page 25

■ Long motor cables .................................... Page 25

■ Functional diagrams .................................. Page 26

How the VLT works

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Saved energy

Energy is saved when the motor runs at a speed which is continually matched to the momentary requirement. An example is a pump and ventilating plant, where a frequency converter can reduce energy consumption by the cube of the speed.

Improved process

Matching the speed to the production process has several advantages: an increase in production and a decrease in the consumption of materials and the scrapping rate.

Improved quality

The number of starts and stops is reduced. This avoids unnecessarily hard treatment of machine parts.

Less maintenance

The frequency converter requires no maintenance. In water supply plants there are no pressure surges which might damage the water pipes.

1. Mains supply

1 × 220/230/240 V AC, 50/60 Hz 3 × 208/220/230/240 V AC, 50/60 Hz 3 × 380/400/415/440/460 V AC, 50/60 Hz

2. Rectifier

Three-phase rectifier bridge rectifies AC to DC.

3. Intermediate circuit

DC voltage = √2 × supply voltage

4. Coils in the intermediate circuit (not all VLT 2000 units)

Smoothen DC voltage and limit mains supply interference (mains harmonics).

5. Capacitors in the intermediate circuit

Smoothen the voltage of the intermediate circuit (energy store).

6. Inverter

Converts DC voltage to variable a.c.voltage and variable frequency.

7. Motor coils (as module)

Advantages of motor coils:

− You can use long motor cables.

− Unlimited switching at the output of

the frequency converter (trip may occur).

8. Output

Variable a.c. voltage,10-100% of the supply voltage. Variable frequency: 0-120/0-500 Hz.

9. Control card

The integrated computer controls the inverter, which generates the pulse pattern by means of which DC voltage is converted to variable a.c. voltage and variable frequency.

How the VLT works

How the VLT is built up

A frequency converter is an electronic unit for infinite speed control of a.c. motors. The frequency converter controls the motor speed by converting the fixed voltage and frequency of the supply mains, e.g. 400 V/ 50 Hz, to variable values. The frequency converter does this by rectifying a.c. voltage to DCvoltage and converting this to a.c. voltage with variable amplitude and frequency.

The variable voltage and frequency supplying the motor make infinite speed control of standard three-phase, asynchronous motors possible.Today the a.c. motor controlled by a frequency converter is a natural part of all automised plants. Apart from utitilizing the good features of the a.c. motor, the infinite speed control gives the user a multitude of additional advantages:

■■

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

The Danfoss VVC principle

VLT 2000 Series frequency converters use an inverter control system known as the Voltage Vector Control (VVC) developed by Danfoss. The VVC principle is superior to the traditional PWM (Pulse Width Modulation) principle used in most modern frequency converters in the following ways:

− Full-rated motor voltage at rated motor frequency.

− Near perfect resemblance to the sinusoidal

mains supply.

− Extremely low switching losses, resulting in high converter efficiency.

The features are obtained through a special switching pattern: the switching intervals are very short, which means high switching frequency, and the six semiconductors of the inverter section are alternately

held inactive in pairs, throughout a 60° sine period. The current wave form of the motor current closely resembles that obtained on mains operation. The switching pause in 60° of the sine period also means that full-rated motor voltage can be obtained - and inverter switching losses are reduced by about one third.

The figures below show the switching pattern and maximum motor voltage according to the VVC principle and the traditional PWM principle respectively.

The full-rated motor voltage and the perfect current wave form mean that the Danfoss VLT 2000 Series allows full motor performance without any derating just like running the motor on the mains.

Motor voltage and simplified switching pattern according to the Danfoss VVC principle

Motor voltage and simplified switching pattern according to the traditional PWM principle

0,50

0,00

1,00

-0,50

-1.00

0 60 120 180 300 360240

U-V U-W W-U

U-V V-W W-U

0,50

0,00

1,00

-0,50

-1.00

0 60 120 180 300 360240

0,866

U-V V-W W-U

Switching pattern for phase U

Single phase voltage

Phase-phase voltage for motor

How the VLT works

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

How the VLT works

Factory-programmed optimization

VLT Series 2000 has dynamic adaptation of the motor voltage and frequency. This ensures correct magnetisation of the motor, thus

providing optimum dynamics, accuracy or efficiency.

VLT has been designed for operation of the most common types of motors and loads. Once parameters 103,104, 105, 107 and 108 have been set according to the motor type plate, your motor operation will be optimum in most cases.

Individual adaptation of VLT and motor is done via parameters 109-112.

Start voltage increases the motor voltage at a given frequency. This increases the motor magnetization. The motor can yield a higher torque, but the disadvantage is that the motor losses are increased too. The result is a higher motor temperature. Excessive start voltage can cause a trip (cut-out).

Start compensation changes the motor voltage as a function of the load. The voltage will increase with higher motor current. Over-compensation will overheat the motor and give the risk of instability and can cause trip (cut-out). As the name indicates, the function is most effective at low motor speed.

U/f ratio This describes the pre-programmed U/f characteristics which indicate the relation between motor voltage (U) and frequency (f). The U/f ratio can be adjusted to ensure correct excitation of the motor, thereby helping to obtain optimal dynamism, accuracy or efficiency.

Slip compensation adds both frequency and voltage and compensates for the varying slip at varying load so that the motor speed is kept constant at varying load. Over-compensation may make the speed increase at increasing load. This means motor overload and risk of unstable motor operation.

Constant torque CT

Par. 104 = Rated motor voltage Par. 105 = Rated motor frequency Par. 107 = Rated motor current Par. 108 = Motor no-load current Par. 109 = Start voltage Par. 110 = Start compensation Par. 111 = U/f ratio Par. 112 = Slip compensation

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

How the VLT works

Control accuracy

Basically we distinguish between open loop and closed loop control.When the control is an open loop type the motor current acts as process feedback. The final result is therefore highly dependent on the characteristics of the motor. Note that large motors give a better result than small motors.

Open loop (depending on motor size) ±2.0 % 3-100 Hz (10-90% of max. torque) PI (closed loop) ±0.5% 1.2-100 Hz (-90 - +90% of max. torque)

A closed loop control incorporates a direct process feedback, which substantially improves the control accuracy. The stated maximum torque follows the power hyperbola in the frequency range across the motor’s rated frequency.

Galvanic isolation

With the VLT 2000 Series safety isolation is standard, as the high-voltage parts of the power section are galvanically isolated from the low-voltage parts of the control section according to VDE 0160/0106 (PELV). Therefore PCs and the like will not be disturbed.

Advanced motor protection

The VLT 2000 Series has a built-in electronic thermal motor protection. The frequency converter calculates the motor temperature on the basis of voltage, current, frequency and time. The thermal motor protection is comparable with a thermal relay in the motor cables. Therefore it is superior to the traditional bi-metallic protection, where the altered cooling conditions due to the speed control are not taken into consideration.

Long motor cables

For the VLT 2000 Series motor coils in an IP 00 or IP 10 enclosure are available as modules. This makes it possible to install a long cable between motor and frequency converter. Motor coils are also included in the RFI and motor filter module in IP 20 enclosure. See page 34 for a speciffication of maximum cable length.

Programmable control inputs and signal outputs in 2 setups

The digital technique used in the VLT 2000 Series makes it possible to redefine the different control inputs and signal outputs and to program 2 different user defined setups. It is easy for the user to program the required functions on the keyboard of the VLT 2000 Series or via the RS 232 user interface.

Protection against mains disturbance

The VLT 2000 Series is protected against transients arising on the mains, e.g. when you switch in power factor phase-correction capacitors or when the supply is subject to lightning strikes. Adequate motor voltage and full torque can be maintained down to 10% under-voltage on the supply mains.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

How the VLT works

Functional diagram VLT 2010-2030 single-phase/three-phase 208-240 V

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Function diagram VLT 2040-2050, 3-phase 208-240 V

How the VLT works

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

How the VLT works

Functional diagram VLT 2020-2060 three-phase 380-460 V

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Chapter 2 ■ Selection of frequency converter ............... Page 30

Sizing ....................................................... Page 30

■ Product range ........................................... Page 31

■ Brake function ........................................... Page 33

■ Motor coils (module) .................................. Page 34

■ RFI and motor filter (module) ..................... Page

■ LC and RFI filter (module) .......................... Page 34

■ Dimensions ............................................... Page 35

■ Technical data ........................................... Page 38

How to size your VLT

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

How to size your VLT

Selection of frequency converter

Usually the size of frequency converter is chosen on the basis of the shaft output, as this may be the only value known. However, if the data are known for both the application, the motor and the frequency converter, it is recommended to make a more accurate sizing.

The values must be based on the rated motor speed.

VLT 2000 only operates according to the CT (constant torque) characteristic

Sizing when you know the motor current

Exercise Conveyor plant with a 1.1 kW, 3 × 380 V motor. At continuous operation the motor current is 2.5 A ( 3 × 415 V).

Solution From the table on the next page you can see that a VLT type 2025 can yield 2.8 A at continuous operation. The right solution is therefore VLT 2025.

Sizing on the basis of the apparent power S

[kVA] consumed by the motor

Exercise A motor must yield constant torque at continous operation. Usually the necessary values will appear from the motor plate or from the motor catalogue.

Solution From the table on the next page you can see that VLT type 2025 can yield 2.0 kVA (415 V) at continuous operation. The solution is therefore VLT type 2025.

Read values Motor current = 2.5 A (3 × 415 V)

U × I × √3

[kVA]

1000

415 × 2.5 × √3

[kVA]

1000

= 1.8 kVA

Sizing on the basis of the power requirement P

VLT

[kW] of the motor

Exercise A machine tool is driven by a 3 kW motor. The power requirement is indicated to be 2.4 kW. The motor efficiency η is 0.80, cos ϕ = 0.81 and the motor voltage is 3 x 415 V. η and cos ϕ are measured at 3 kW output. We estimate η and cos ϕ to be approximately the same at 80 % load.

Solution From the table on the next page you can see that VLT type 2040 can yield 4.0 kVA (415 V) at continuous operation. The right solution is therefore VLT type 2040.

VLT

η × cos ϕ

2.4 kW

0.80 × 0.81

= 3.7 kVA

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Which one to choose?

Mains: 1 × 220/230/240 V, 3 × 208/220/230/240 V

VLT type Typical shaft output Constant output current I

VLT,N

Constant output power at 230 V

[kW] [A] [kVA] 2010 0.37 2.2 0.9 2015 0.55 3.1 1.3 2020 0.75 4.0 1.6 2030 1.5 7.5 3.1 2040 *) 2.2 10.6 4.4 2050 *) 3.0 16.7 6.9

*) VLT types 2040 and 2050: only three-phase mains supply.

Mains: 3 × 380/400/415/440/460 V *)

VLT type Typical shaft output Constant output current I

VLT,N

Constant output power at 415 V

[kW] [A] [kVA] 2020 0.75 2.4 1.7 2025 1.1 2.8 2.0 2030 1.5 4.0 2.9 2040 2.2 5.6 4.0 2050 3.0 7.6 5.5 2060 *) 4.0 9.7 7.0

*) VLT type 2060: 3 × 380/400/415 V

How to size your VLT

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

How to size your VLT

Product range

The VLT 2000 Series is available in a single-phase/ three-phase version (1 x 220-240 V or 3 x 208-240V) in the power range 0.37-1.5 kW and a three-phase version (3 x 208-240 V) in the power range 2.2-3.0 kW. A three-phase version (3 x 380-460 V) in the power range 0.75-4.0 kW is also available.

All units are delivered in an IP 20 enclosure.

How to find the right code number

When you have found the right VLT size you can find the code number to be ordered in the table below.

Example: VLT type 2020 (3 x 380-460 V) three-phase without display with brake has the code number 195H3400.

As appears from the table a VLT 2000 single/three phase can be delivered with various options and modules such as brake function, RFI filter and motor coils.

VLT 2000 Series, single-phase/three-phase (1

× ×

× 220-240 V / 3

× ×

× 208-240 V) (3 x 208-240 V)

VLT 2010 VLT 2015 VLT 2020 VLT 2030 VLT 2040 VLT 2050 Without display 195H3100 195H3102 195H3104 195H3106 195H3108 195H3110 With display 195H3101 195H3103 195H3105 195H3107 195H3109 195H3111 Without display with brake 195H3200 195H3202 195H3204 195H3206 195H3208 195H3210 With display with brake 195H3201 195H3203 195H3205 195H3207 195H3209 195H3211 RFI and motor filter module 195H6523 195H6524 195H6524 195H6525 IP 20 1-phase RFI and motor filter module 195H6522 195H6522 195H6522 195H6522 IP 20 3-phase RFI-filtermodul IP 20 (VBG-4)* - - - - 195H6528 195H6528 Motor coil module IP 00 195H6510 195H6510 195H6510 195H6510 Motor coil module IP 10 (VBG-4) 195H6521 195H6521 195H6521 195H6521 LC and RFI filter module 195H6527 195H6526 195H6526 195H6526 IP 20 3-phase * Schaffner RFI-filter type FN351 - 16/29

VLT 2000 Series, three-phase (3

× ×

× 380/460 V). Note: VLT 2060: 380/415 V

VLT 2020 VLT 2025 VLT 2030 VLT 2040 VLT 2050 VLT 2060 Without display 195H3300 195H3302 195H3304 195H3306 195H3308 195H3310 With display 195H3301 195H3303 195H3305 195H3307 195H3309 195H3311 Without display with brake 195H3400 195H3402 195H3404 195H3406 195H3408 195H3410 With display with brake 195H3401 195H3403 195H3405 195H3407 195H3409 195H3411 RFI and motor filter module IP 20** 195H6522 195H6522 195H6522 195H6522 195H6522 195H6522 Motor coil module IP 10 (VBG-4) 195H6521 195H6521 195H6521 195H6521 195H6521 195H6521 LC and RFI filter module IP 20** 195H6527 195H6527 195H6527 195H6526 195H6526 195H6526 **Only 380/415 V

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

How to size your VLT

Brake function

All units can be delivered with built-in brake function (factory-mounted). The brake resistors for the brake function must be connected according to the connection diagram on page 42.

Specifications VLT 2010-2030 VLT 2040-2050 VLT 2020-2050 VLT 2060

208-240 V 208-240 V 380-460 V 380-415 V Max. current 5.5 A 16 A 5.5 A 7.5 A Min. brake voltage 372 V DC 372 V DC 747 V DC 646 V DC Max. brake voltage 382 V DC 382 V DC 764 V DC 661 V DC P-band 4 V 8 V 8 V 8 V Overcurrent fuse None None None None Min. brake resistance 70 Ohm 25 Ohm 140 Ohm 90 Ohm

The VLT

2000 with built-in RFI filter in IP 20 enclosure, is designed to be built directly into control panels. ,

EMC demands are fulfiled without any extra component.

- RFI filter to reduce electromagnetic interference.

- The VLT

2000 units meet all necessary EMC

immunity standards as laid down in the IEC 1000-4.

- The VLT

2000 units meet the EMC emission requirements as laid down in the EN 55011, Group 1 Class A. The EMC emission specifications are complied with by using up to 40 m unscreened cable, see page 88.

VLT Series 2000, single-phase (1 x 220-240 V)

VLT 2010 VLT 2015 VLT 2020 VLT 2030 Without display 195H3600 195H3602 195H3604 195H3606 With display 195H3601 195H3603 195H3605 195H3607 Without display / With brake 195H3700 195H3702 195H3704 195H3706 With display / with brake 195H3701 195H3703 195H3705 195H3707 Motor coils, IP20, three-phase 195H6529 195H6529 195H6529 195H6529

VLT Series 2000, three-phase (3 x 380-415 V)

VLT 2020 VLT2025 VLT2030 VLT 2040 VLT 2050 VLT 2060 Without display 195H3800 195H3802 195H3804 195H3806 195H3808 195H3810 With display 195H3801 195H3803 195H3805 195H3807 195H3809 195H3811 Without display / With brake 195H3900 195H3902 195H3904 195H3906 195H3908 195H3910 With display / with brake 195H3901 195H3903 195H3905 195H3907 195H3909 195H3911 Motor coils, IP20, three-phase 195H6529 195H6529 195H6529 195H6529 195H6529 195H6529

VLT 2000 Series built-in RFI filter EN 55011 1A:

■

VLT Series 2000, single-phase (1 x 220-240 V)

VLT 2010 VLT 2015 VLT 2020

With display / without brake 195H3112 195H3113 195H3114

VLT 2000 Series built-in compact RFI filter

For technical data, see page 12.

■

Accessories/options to the VLT Series 2000:

Remote control (option) 175H1788 PC program (VLS Dialog 2)(

DanishDanish

Danish) 175H2877

PC program (VLS Dialog 2)(

EnglishEnglish

English) 175H2850

PC program (VLS Dialog 2)(

GermanGerman

German) 175H2876

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

How to size your VLT

LC and RFI filter (module)

The LC and RFI filter module in IP 20 enclosure is designed to be built in with the VLT frequency converter itself. The filter contains the following:

- RFI filter to reduce electro-magnetic interference

- LC filter to reduce the acoustic noise level from the motor and make it possible to use long motor cables up to 300 m.

- Motor filter (motor RFI filter) to reduce the electromagnetic interference from the motor cable.

Equipped with the IP 20 LC and RFI filter (195H6526 and 195H6527), the VLT 2000 Series meets the EN 55011, Group 1, Class A requirements of EMC emission. The EMC emission specifications are complied with by using up to 100 m unscreened motor cable.

Code nr. 195H6527 195H6526 VLT basic unit VLT 2020, 2025, 2030 VLT 2040, 2050, 2060 Enclosure IP 20 IP 20 Outside dimensions (H x W x D) 170 x 110 x 180 mm 170 x 110 x 180 mm Built-in fan Yes No Mains voltage 380 - 415 V 380 - 415 V Current (max.) 4.0 A 9.7 A Cut-out frequency No limit No limit EMC immunity IEC 801 Series IEC 801 Series EMC emission EN 55011 Group 1, Class A EN 55011 Group 1, Class A Max. cable length to fullfill EN 55011, Group 1, Class A 100 m 100 m Unscreened Max. temperature (full load) 40°C 40°C

Motor coils (module)

The IP 20 enclosure (also with mains filter) is available with integrated motor coils or as an IP 00/IP 10 module for external mounting.

Technical data

208-240 V/IP 20 208-240V/IP 00 380-415 V/IP 20 380-460 V/IP 10

Max. current 3 × 2.2/4.0/7.5 A 3 × 7.5 A 3 × 9.7 A 3 × 10 A Max. cable length (unscreened) 150 m 300 m 150 m 300 m Max. cable length to fullfill EN 55011, Group 1, Class A100 m - 100 m Unscreened Max. cable length (screened) 75 m 150 m 75 m 150 m Inductance 3× 75 µH 75 µH 120 µH 240 µH Outside dimensions 100x110x180 mm - 100x110x180 mm Code no. 195H6523,6524,6525 195H6510 195H6522 195H6521

Additional litterature:

MI.20.CX.02 - Moter coil, IP 10 MI.20.BX.52 - Moter coil, IP 00 MD.65.BX.XX - Brake resistors

Motor coils in IP 00 and IP 10 enclosure contain only one motor coil, making it possible to use long motor cables up to 300 m. These motor coils must be installed separately (not for co-building with the VLT frequency converter).

RFI and motor filter (module)

The RFI and motor filter module in IP 20 enclosure is designed to be built in with the VLT frequency converter itself. The filter contains the following:

- RFI filter to reduce electro-magnetic interference.

- Motor coils making it possible to use long motor cables.

- Motor filter (motor RFI filter) to reduce the electromagnetic interference from the motor cable.

The VLT 2000 Series basic units meet EMC immunity requirements as laid down in the IEC 1000-4 standards, but do not meet any EMC emission requirements.

Equipped with the IP 20 RFI and motor filter (195H6522, 195H6523, 195H6524, 195H6525), the VLT 2000 Series meets the EN 55011, Group 1, Class A requirements of EMC emission. The EMC emission specifications are complied with by using up to 100 m unscreened motor cable.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Dimensions

VLT 2010-2030 single-phase, 220-240 V/three-phase, 208-240 V VLT 2010-2020 built-in compact RFI filter single-phase, 220-240 V

Min. space over and under frequency converters: 100 mm

Min. space to the left and the right of frequency converters: 0 mm (side-by-side mounting).

VLT 2010-2030 with module single-phase, 220-240 V/three-phase, 208-240 V

With 100 mm module: A = 362 mm

a = 337 mm

With 170 mm module: A = 432 mm

a = 407 mm

Min. space over and under frequency converters: 100 mm.

Min. space to the left and the right of frequency converters: 0 mm (side-by-side mounting).

How to size your VLT

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Dimensions (cont’d)

VLT

2020-2060 three-phase, 380-415/460 V

VLT 2040-2050 three-phase, 208-240 V

Min. space over and under frequency converters: 100 mm.

Min. space to the left and the right of frequency converters: 0 mm (side-by-side mounting)

VLT 2020-2060 with module three-phase, 380-415/460 V

with 100 mm module: A = 462 mm

a = 437 mm

With 170 mm module: A = 532 mm

a = 507 mm

Min. space over and under frequency converters: 100 mm.

Min. space to the left and the right of frequency converters: 0 mm (side-by-side mounting)

How to size your VLT

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

How to size your VLT

Dimensions (cont’d)

VLT 2010-2030 with built-in RFI filter, single-phase, 220-240 V

Min. space over and under frequency converters: 100 mm.

Min. space to the left and the right of frequency converters: 0 mm (side-by-side mounting)

VLT 2020-2060 with built-in RFI filter, three-phase, 380-415 V

Min. space over and under frequency converters: 100 mm.

Min. space to the left and the right of frequency converters: 0 mm (side-by-side mounting)

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

How to size your VLT

Technical data

Mains: 1

××

× 220/230/240 V, 3

××

× 208/220/230/240 V 3 x 208/220/230/240 V

Meets the international standards, UL/ cUL 4) VLT type 2010 2015 2020 2030 2040 2050

Constant load (CT): Output current I

VLT.N

[A] 2.2 3.1 4.0 7.5 10.6 16.7

VLT.MAX

[A] (60 s) 3.5 4.9 6.3 10.5 17.0 26.7

Output S

VLT.N

[kVA] 0.9 1.3 1.6 3.1 4.4 6.9

VLT.MAX

[kVA] (60 s) 1.4 2.1 2.6 4.3 7.0 11.0

Typical shaft output P

VLT.N

[kW] 0.37 0.55 0.75 1.5 2.2 3.0 Max. cable cross section [mm2] 44 4444 Max. motor cable length [m] 40 (with motor coils IP 10:

unscreened cables 300 m, screened cables 150 m) Output voltage UM [%] 0-100% of mains voltage Output frequency fM [Hz] 0-120 or 0-500; programmable Rated motor voltage U

M,N

[V] 200/208/220/230/240

Rated motor frequency f

M,N

[Hz] 50/60/87/100 Thermal motor protection during operation Built-in thermal motor protection (electronic) Switching on the output Unlimited (frequent switching may cause cut-out) Ramp times [s] 0.1-800

VLT type 2010 2015 2020 2030 2040 2050

Max. input current I

L,N

[A] (5.3/3.5) (8.5/5.6) (10.6/7.1) (18/12) (-/10) (-/16) Max. cable cross section [mm2] 44 4444 Max. prefuses [A] 10 16 20 20 20 25 Bussmann Fuse type KTN-R 250 V AC 5) [A] 10 15 20 20 20 25 Mains supply voltage [V] 1 x 220/230/240 ±10 % 3 x 208/220/

3 × 208/220/230/240 ±10 % 230/240±10 %

Mains supply frequency [Hz] 50/60 Power factor/cos. ϕ

Without mains filter:0.50/0.87 0.90/1.0 0.90/1.0

With mains filter:0.65/1.0 Efficiency >0.94 at rated load Switching on the input times/min. 5

VLT type 2010 2015 2020 2030 2040 2050 Weight [kg] IP 20 2.0 2.0 2.1 2.1 4.6 4.6 Weight [kg] with built-in RFI filter IP 20 3.7 3.7 3.8 3.8 Power loss at max. load CT [W] 39 53 69 126 136 236 Enclosure IP 20 IP 20 IP 20 IP 20 IP 20 IP 20 Vibration test [g] 0.7 Relative humidity [%] Max. 95 IEC 721 (according to VDE 0160) Ambient temperature [°C] 0 → +40 at full-load operation

)

(according to VDE 0160) [°C] −25 → +70, storage/transport Frequency converter protection Grounding and short-circuit proof 3) EMC applied standards Emission EN 55011, Group 1, Class A, (see page 90) CISPR 11 (with RFI and motor filter)

Immunity IEC 1000-4

UL file-number E134261

) In the range -10 - 0 °C the unit can start and run, but the display indications and certain operating characteristics

will not meet the specifications.

) Brake option without protection

) Units with built-in RFI filter are not UL-approved.

) For the North American market

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Technical data (continued)

Mains: 3

××

× 380-460 V (VLT type 2060: 3

××

× 380-415 V)

Meets the international standards, UL/cUL 4) VLT type 2020 2025 2030 2040 2050 2060 1)

Constant load (CT): Output current I

VLT.N

[A] 2.4 2.8 4.0 5.6 7.6 9.7

VLT.MAX

[A] (60 s) 3.8 4.5 6.4 9.0 12.2 15.5

Output S

VLT.N

[kVA] 1.91 2.23 3.19 4.46 6.05 6.97

VLT.MAX

[kVA] (60 s) 3.06 3.57 5.10 7.14 9.69 11.2

Typical shaft output P

VLT.N

[kW] 0.75 1.1 1.5 2.2 3.0 4.0 Max. cable cross section [mm2]444444 Max. motor cable length [m] 40 (with motor coils IP 10:

unscreened cables: 300 m, screened cables: 150 m) Output voltage UM [%] 0-100 in % of mains voltage Output frequency fM [Hz] 0-120 or 0-500; programmable Rated motor voltage U

M,N

[V] 380/400/415/440/460

Rated motor frequency f

M,N

VLT type 2020 2025 2030 2040 2050 2060 1)

Max. input current I

L,N

[A] 2.3 2.7 3.8 5.3 7.2 9.1 Max. cable cross section [mm2]444444 Max. prefuses [A] 16 16 16 16 16 20 Bussmann Fuse type KTN-R 250 V AC 5) [A] 15 15 15 15 15 Mains supply voltage [V] 3 × 380-460 V ±10% 2060: 3 × 380-415 V ±10% Mains supply frequency [Hz] 50/60 Power factor/cos. ϕ

> 0.90/1.0 at rated load Efficiency > 0.97 at rated load Switching on the input times/min. 5

VLT type 2020 2025 2030 2040 2050 2060 1) Weight [kg] IP 20 4.0 4.0 4.0 4.2 4.2 4.2 Weight [kg] with built-in RFI filter IP 20 4.6 4.6 4.6 4.8 4.8 4.8 Power loss at max. load CT [W] 58 64 78 114 153 196 Enclosure IP 20 IP 20 IP 20 IP 20 IP 20 IP 20 Vibration test [g] 0.7 Relative humidity [%] Max. 95 IEC 721 (according to VDE 0160) Ambient temperature [°C] 0 → +40, at full load operation

)

(according to VDE 0160) [°C] −25 → +70, storage/transport Frequency converter protection Grounding and short-circuit proof 3) EMC applied standards Emission EN 55011, Group 1, Class A (see page 90) CISPR 11 (with RFI and motor filter)

Immunity IEC 1000-4

UL file no. E 134261

) VLT 2060 has not been UL approved.

) In the range -10 - 0 °C the unit can start and run, but the display indications and certain operating characteristics

will not meet the specifications.

) Brake option without protection

) Units with built-in RFI filter are not UL-approved.

) For the North American market

How to size your VLT

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

How to install your VLT

Chapter 3 ■ How to connect the VLT to the motor........ Page 42

■ Survey of connection terminals.................. Page 42

■ How to connect control signals ................. Page 43

■ Mechanical installation............................... Page 44

■ High voltage test ....................................... Page 44

■ Extra protection ......................................... Page 44

■ Prefuses .................................................... Page 44

■ What cables to use.................................... Page 44

■ For the North American market ................. Page 44

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

How to connect the VLT to the motor

With the VLT 2000 Series you can use all standard three-phase asynchronous motors. Small motors (230/400 V, ∆/Y) are delta-connected to 230 V and star-connected to 400 V. Large motors are delta-connected (400/690 V, ∆/Y).

The motor is connected to the VLT frequency converter by means of terminals at the bottom of the enclosure (the module).

The rotation direction can be changed by swapping the phase motor cables (terminals 97 and 98) or by using the “Fwd/Rev” key, see

also page 47.

How to install your VLT

Survey of connection terminals

All the terminals of a VLT frequency converter are shown below (3 x 380-460 V). The control signals are described overleaf.

not remove the motor and mains terminals

when the unit is connected to the mains. Ensure that the power supply has been switched off before you remove the motor and mains terminals.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

How to install your VLT

How to connect control signals

You can connect the control signals in different ways on the VLT frequency converter. The control signals can be connected to the two terminal strips at the top of the enclosure.

Each terminal number is based on the survey on page

42.

The control signals can be connected as follows:

Terminal 18/402 ★ Start Latched No Speed Speed Reversing Reset Motor coasting/

start function up select and start start

Terminal 19/403 ★ Reversing Start No Speed Speed Reset

reversing function down select

Terminal 27/404 Motor Quick DC ★ Reset and Stop Reset Speed Speed

coasting stop braking motor coasting and start up select

Terminal 29/405 ★ Jog Start Digital Pulse Pulse Pulse Select Reset Reversing Speed (Jog) reference 100 Hz 1 kHz 10 kHz setup down

★ For factory setting of terminal function, see page 105.

Terminal 01-03: Relay output Max. 250 V, max. 2 A. Relay: Not activated Terminal 12: Supply to digital inputs 24 V DC, max. 140 mA Terminals 18-19: Digital inputs 0-24 V, R

= 2 kohm (max. 37 V for 10 sec.)

27-29 (min. on-time 80 millisec.) Terminal 46: Signal for motor frequency/current Max. 24 V DC, max. 40 mA, min. 600 ohm Terminal 50: Supply to 1 kohm potmeter 10 V DC, max. 12 mA Terminal 53: Analogue input voltage +0-10 V DC, Ri = 10 kohm, +10 - 0 V Terminal 60: Analogue input current 0/4-20 mA, Ri = 226 ohm, 20 - 0/4 mA Terminals 71/72 RS 232 standard 71 RXD, 72 TXD, 20 dig. ref. Terminal 20: Digital frame Must be used together with all terminals

except for terminals 50, 53 and 60.

Terminal 55: Analogue frame Must be used together with

terminals 50, 53 and 60

For a description of terminals and how to program the various parameters, see chapter 4.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

■

How to install your VLT

Prefuses

Prefuses must be installed in the supply feeding the frequency converter. The correct sizes and ratings can be found in the Technical Data section.

What cables to use

Cables for the control signals and the brake cable must be screened in order to comply with EMC specifications. The maximum cable length and the maximum cable cross section is specified under Technical Data. Any motor cable screening is connected to the screen termination bracket in the frequency converter (bottom) and the motor. If non-screened cables are used, the control inputs can occasionally be subject to signal disturbances. Normally such a disturbance will not affect the frequency converter.

For the North American market

The Electronic Thermal Relay (ETR) in UL listed VLT's provides class 20 motor overload protection in accordance with NEC in single motor applications, when parameter 315 is set to Trip [2] and parameter 107 is set to nominal motor (nameplate) current.

■

Mechanical installation

The VLT 2000 Series is cooled by natural convection. Therefore air must be able to pass freely under and over the unit. The frequency converter must be mounted on a flat vertical surface. This will ensure that the air flow follows the heat reduction. To enable the frequency converter to get rid of the cooling air, you must allow free air space both above and below the frequency converter. The ambient temperature must not exceed 40°C so that the VLT frequency converter can dispose of its power loss.

Enclosure IP 20 *) A 100 mm

*) The unit is for panel mounting. It should be placed

so that it is easily accessible according to Pr EN 50178

Side by side mounting

The VLT frequency converters can be installed side by side. There is no need for any space for convection along the side of the enclosure.

High voltage test

You can perform a 2.5 kV DC test for 1 second after short-circuiting terminals U, V, W, L

, L2 and L3. Testing is according to the unit’s chassis. It is important to ensure that the filter capacitors have been discharged after the test.

Extra protection

As extra protection, error voltage relays or neutral grounding can be used. However, the installation must comply with local health and safety standards. A ground fault can introduce a direct current in the discharge current. Terminal 95 (earthscrew) intended for reinforced earthing. Any RCD-relays used must comply with local regulations.The relays must be suitable to protect three-phase equipment with bridge rectifier and short discharge on power-up.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Chapter 4 ■ Operating your VLT................................... Page 46

■ The display ................................................ Page 46

■ The push buttons ...................................... Page 46

■ Altering a data value (digits) ....................... Page 47

■ Altering a data value (text) ......................... Page 47

■ The light diodes ......................................... Page 48

■ Back to Display group ............................... Page 48

Back to the factory setting ........................ Page 48

■ How to lock programming function ........... Page 48

■ The different groups (modes)..................... Page 49

How to operate your VLT

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

The display

Light in the display indicates that the frequency converter is connected to the supply voltage. The display has three lines: Line A.Text written with capital letters is shown

permanently - also while you are programming the frequency converter.

Line B.States parameters and the rotation direction

of the motor.

Line C.Indicates the parameter value and what

menu you are in.

The push buttons

There are eight keys on the frequency converter’s control panel. The different keys and their functions are described overleaf.

Operating your VLT

You program and control the frequency converter via the control panel. The control panel consists of:

− a display allowing you to interface with the

frequency converter.

− push buttons which can have one or several

functions (they are described later in this chapter).

− two light emitting diodes (LEDs):

Green light shows that power is on. Red light indicates alarm.

How to operate your VLT

Stop

Reset

Data

–

Jog

Fwd. Rev.

➤

Start

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

■

The “Stop/Reset” key allows you to stop the

connected motor during operation, provided you have not chosen to set parameter 007 to Disable. Line A of the display will flash after you have pressed the “Stop/Reset” key. The “Stop/Reset” key does

not disconnect the supply voltage and may therefore not be used as a safety switch.

The “Stop/Reset” key can also reset the frequency converter after trip. To make the key work, set parameter 006 to Enable.

Press this key to start the connected motor.

This key allows you to change from Display group (see page 48) to Menu group (see

page 48) and on to Parameter group (see page

49).

Pressing the “Menu” key will return you from Data group (see page 49) to Parameter group (see page

49) and back to Menu group (see page 48). Press the “Menu” key in Data group to store altered data values.

The “Data” key allows you to change from

Parameter group (see page 49) to Data group (see page 49) and from Menu group (see page 48) to Display group (see page 48).

■

The “Jog” key allows you to make the motor

run at a fixed, preprogrammed speed or frequency. This frequency is set in parameter 203. Make sure that parameter 009 is set to Enable first. The VLT frequency converter is Jogging as long as the “Jog” key is held down.

This key allows you to change the rotation

direction of the motor. The set ramp times (up/down) in parameters 215 and 216 will be used when the key is activated. For safety reasons the key can only be activated when the VLT frequency converter is set to local operation (parameter 003). To make this key work you must change the factory setting of parameter 008 from Disable to Enable.

These keys allow you to move round in

5 different groups (modes) in order to choose a menu, a specific parameter or a data value. In Display group (see next

pagepage

page) you can choose

between 10 different display indications by using the “+” and ”−” keys.

Altering a data value (digits)

When you press the “Data” key, the digit to the right flashes (active).The other digits can be activated one by one by pressing the “Data” key one, two, three or four times. You can alter the activated digit by pressing the “+” or “−” key. It is not possible to delete or alter the values of the factory settings.

To alter some values, you will have to stop the motor first by pressing the “Stop/Reset” key.

Altering a data value (text)

If the data value of the chosen parameter is a text, you can see the chosen text in the display. The text can be altered by pressing “Data”and then the “+” or “−” key. The shown text is stored when you leave Data group or on Time out (20 sec.), see page 49 under Data group. It is not possible to delete or alter the values of the factory setting.

To alter some values, you will have to stop the motor first by pressing the “Stop/Reset” key.

Stop

Reset

Jog

■

Fwd. Rev.

➤

■

–

■

How to operate your VLT

Start

■

Data

■

MENU GROUP

PARAMETER GROUP

DATA GROUP

DISPLAY GROUP

DISPLAY GROUP MENU GROUP

PARAMETER GROUP

DATA GROUP

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

00,0 Hz

0.. OPERATION

SETTING

Back to the factory setting

1. Switch off the VLT by disconnecting the supply

voltage.

2. Press “Menu”, “Data” and “Jog” simultaneously.

3. Switch on the VLT and press the keys until the

display (line A) writes FIRST.

4. Release the keys. The factory settings have now

been activated again.

How to lock programming function

You can avoid accidental programming by choosing the data value Locked in parameter 013. Even though parameter 013 is set to Locked, you can still change data via the serial port.

How to operate your VLT

■

The groups (modes)

You can change between the 5 different groups (modes) shown in the display by means of the “Menu” and “Data” keys.

Display group: Your VLT will always be in Display group after start. In Display group you can choose between 10 different display indications by means of the “+” and “−” keys:

− Reference in %

− Frequency in Hz

− Display/Feedback

− Current A

− Torque %

− Current supply kW

− Output voltage V

− DC voltage V (intermediate)

− Thermal motor load %

− Thermal inverter load %

00,0 Hz

FREQUENCY ➜ FUNCTION OK 1

Example of display indication (speed)

Example of display indication (name)

Status, local operation

Setup number ( does not change on change of mode)

Direction of rotation

Menu group: You can choose Menu group from either Display group or Parameter group by using the “Menu” key.

In Menu group you can see the different menus (0-6) in which you can find the parameters. You change between the menus by means of the “+” and “−” keys.

Parameter number flashes

0.. = Cursor

flashes

Menu group Name

The light diodes

There are two light diodes on the display.

Green light lights up when power is on and red light indicates alarm. See page 82 for a description of alarm indications.

Back to Display group

You can always return to the Display group, no matter where you are in the menus. You do it by pressing the “Menu” and the “Data” keys together.

Operating without control panel

The frequency converter is preprogrammed. All preprogramming is shown on page 105. You can change the parameters using the serial communication port.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

The groups (modes) (continued)

Parameter group: You enter Parameter group from either Menu group or Data group by using the “Menu” key.

In Parameter group you can select the parameter(s) you want to alter. You change between the various parameters in the menu by means of the “+” and “−” keys.

00,0 Hz

00 0 LANGUAGE ENGLISH 1

Parameter number flashes

0 = Cursor

flashes

Set data value

Parameter name

Data group: You can only enter Data group from Parameter group and only by using the “Data” key. In Data group you can alter the data value of the parameter you have chosen in Parameter group. You switch between the different data values by means of the “+” and “−” keys. If the VLT frequency converter is in Data group for more than 20 sec. and if no activity has been registered, you leave the Data group automatically.

If you have altered a data value, this will not be stored. Press the “Data” key once to return.

To store the new (selected) data value, you must

leave Data group. You do this by pressing the “Menu” key, or it takes place automatically after 20 seconds.

00,0 Hz

LANGUAGE E NGLISH 1

Parameter name

E = Cursor flashes

Data value

Alarm group: The VLT frequency converter will enter Alarm group upon a trip condition.

If TRIP is displayed the operation has stopped

and you must press the “Stop/Reset” key to

reset the VLT. If TRIP LOCKED is displayed you must switch off the VLT and then switch it on again, and then press the “Stop/Reset” key.

ALARM

TRIP OVERVOLTAGE

Reset mode

Reason for alarm

How to operate your VLT

Setup number ( does not change on change of mode)

Setup number ( does not change on change of mode).

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

How to operate your VLT

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

The control possibilities of the VLT

Chapter 5 ■ Operation and display (group 0)................. Page 52

■ Load and motor (group 1).......................... Page 52

■ Serial data interface (group 5) .................... Page 54

■ VLT status ................................................. Page 56

■ VLT control commands.............................. Page 57

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

The control possibilities of the VLT

The settings of parameters 101-112 will be suitable for normal applications using standard induction motors at constant torque load without parallel-coupled motors.

Open loop: If parallel-coupled motors are used on a VLT frequency converter output terminal, or any synchronous type of motor is used, select the open loop mode. Further adjustments may improve the effective torque or give a more accurate speed, if the motor data deviates from the typical standard values. Manual tuning is possible in parameters 107-112 for adjustment of values.

Operation and display (group 0..)

In this group you will find parameters concerning the display read-out, local operation and setup handling.

Note: The choice between the 10 different display read-outs mentioned on page 48 is not an element of this group.

Load and motor (group 1)

This group of parameters has been reserved for the adjustments necessary to adapt the VLT frequency converter to the required application and motor.

Control with open loop

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

The control possibilities of the VLT

Load and motor (group 1..) (continued)

Closed loop control - PI controller: If closed loop control is required, the transmitter, tacho-meter or encoder should supply one of the analogue standard signals (e.g. 0-10 V, 0-20 mA, 4-

20 mA) or a pulse signal frequency of max. 100 Hz, 1 kHz or 10 kHz (programmable).

The reference signal can either be fixed internally (digital reference) or be a standard analogue signal or pulse signal.

Control with closed loop

The feedback value should be 50-80% of the reference signal. It is not possible to select the same type of signal (voltage, current, pulse) for both the reference and the feedback. At start the ouptut frequency is determined by the reference and the feed forward factor (parameter 119) and the f

MAX

and f

MIN

settings of the frequency converter. When a feedback signal is registered, the PI controller then corrects the ouptut frequency by comparing with the reference/feedback signals. At stop the output (integrator) is set to 0 so that a restart follows the normal start situation.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Serial data interface (group 5..)

Using the serial RS 232 port (terminals 71 and 72) you can read and set parameters of the VLT frequency converter and issue reference and control commands. The serial port can be used for point-to-point communication between the VLT frequency converter and a PC. Communication takes place by means of a protocol specified by Danfoss, and using the echo function (para. 500) you can connect several VLT frequency converters.

The data format consists of 10 bits: One start bit (logical 0) Eight data bits One stop bit (logical1)

The control possibilities of the VLT

Protocol: The communication protocol for the VLT 2000 Series consists of 22 ASCII characters. These characters make it possible to operate, set and read parameters, and to receive status feedback from the VLT frequency converter.

The communication takes place in the following way: The master sends a telegram to a VLT frequency converter. Then the master awaits a reply from the frequency converter before sending a new message. The reply to the master resembles the telegram sent by the master, but now contains any updated data values and the status of the frequency converter.

Data format Telegram format

Set the baud rate (rate of transmission) in parameter 501 and the address of each unit in parameter 500.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Serial data interface (group 5) (continued)

Byte 1:

Start byte which in this case must be the character < (ASCII: 60).

Byte 2, 3:

The two-digit address of the frequency converter. This address is also programmed in parameter 500. Sending to address 00 means broadcasting to all units connected to the serial port. None of the units will reply, but they will carry out the command.

Byte 4:

Control parameter telling the VLT frequency converter what to do with the following data values.

U (update):

Means that the data value (14-18) must be recorded into the frequency converter.

R (read):

Means that the master wants to read the data value of the parameter stated in bytes 9-12.

C (control):

Means that the frequency converter only reads the four command bytes (5-8) and returns with status. Parameter number and data value will be ignored.

I (read index):

Means that it reads index and parameter and returns with status. Parameter is stated in bytes 9-12 and index is stated in bytes 13-18.

Parameters with indexes are read-only parameters. Action will be taken on the control word.

Byte 5-8:

Control and status words are used to send commands to the frequency converter and send status from the frequency converter to the master.

Byte 9-12:

The parameter number is set in these bytes.

Byte 13:

Used for the sign for the data value in bytes 14-18. All characters other than "-" are taken as "+".

Byte 14-18:

The data value of the parameter stated in bytes 9-12 is set in these bytes. The value must be a whole number. If a decimal point is needed it is stated in byte 19.

Note: Some data values have brackets with a number, e.g. [0]. Use this number instead of the text data value.

Byte 19:

The position of the decimal point in data values stated in bytes 14-18. The number states the number of characters after the decimal point. Byte 19 can thus be 1, 2, 3, 4 or 5. Example: The number 23.75 is stated as follows:

Byte No. 13 14 15 16 17 18 19 ASCII character + 2 3 7 5 0 3

If byte 19 is 9 this indicates an unknown parameter.

Byte 20, 21:

Used for summary control. If no control is necessary cancel the function using ? (ASCII: 63) in the two bytes.

Byte 22:

Stop byte stating the end of the telegram. The character > is used (ASCII: 62)

The control possibilities of the VLT

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

VLT status

The four control and status bytes are used to send control commands to the frequency converter when the telegram is sent from the master and to send sta-

tus from the frequency converter to the master when the telegram is returned from the VLT frequency converter. The four bytes operate as status from the frequency converter with the following functions:

Status word

Byte 8 Byte 7 Byte 6 Byte 5

TCVVNOLSNNOONMVC

IUOLOUOPOONNOOLT MR L TTT CE T TR ERT AEWS3 2FO REAOROLDAT AR N SNGKUF RA / / U NO

TE N O· NR LCOT O / NRP I TOOTOT KOO I AERN FF A R

KKSNNREGIFF / SRE

/TGGAFN TEA

//A ET /H32TIAD

L L/I/I RNDY

I LLL /O WB IGY

MI I IR NSA I P /

IMMNUF PRT / /

TI IGNR/EN R

TT NE E I / PRE

A I QBDN OEA

UN U GS S AD

TGLS= T SDY

OI A IY

SMCRR B TIOET L ATNF E

RT I

TOR N

KO H

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

1/2 byte 1/2 byte 1/2 byte 1/2 byte

0000000000000000 0001000100010001 0010001000100010 0011001100110011 0100010001000100 0101010101010101 0110011001100110 0111011101110111 1000100010001000 1001100110011001 1010101010101010 1011101110111011 1100110011001100 1101110111011101 1110111011101110 1111111111111111

ASCII

@ A B C D E

F G H

J K

L M N O

Note: Each byte consists of 8 bits, but the frequency converter uses only the last 4 bits.

The control possibilities of the VLT

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

VLT control commands

The four control and status bytes are used to send control commands to the frequency converter when the telegram is sent from the master, and to send status from the frequency converter to the master when the telegram is returned from the VLT frequency converter. When these four bytes are used for control, they have the following meaning:

OFF 1: Makes a normal ramp stop of the motor and

opens the relay output of the frequency converter (relay off).

OFF 2: Makes a motor coast and opens the relay

output (relay off).

OFF 3: Same as OFF 1, but the motor makes a

quick-stop.

Bit 10: This bit has to be 1, if any of the control

commands should cause a reaction.

Control word

Byte 8 Byte 7 Byte 6 Byte 5

NSNSSDNJ NRHQMOOO OEOPPAOOOAOUOF FF

T EET G ML I TFFF FUFEEAF FPDCO UPUDD U 1U KR 321 NN NNNS/ CSCSSOCOCT SC/// TETEETTFTOETO

I L I L L OFOPNOAOOO OEOEEVN N APSNNN NCNCCA / / B T

T TTL / L / I 321

/IOSEN

1MLDNRTRG RSS EARA E/ BB/ SRAM/ VETMP E2 V T P E RA ON SL NA

II B ND L G E

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

1/2 byte 1/2 byte 1/2 byte 1/2 byte 0000000000000000 0001000100010001 0010001000100010 0011001100110011 0100010001000100 0101010101010101 0110011001100110 0111011101110111 1000100010001000 1001100110011001 1010101010101010 1011101110111011 1100110011001100 1101110111011101 1110111011101110 1111111111111111 XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX

ASCII

A B C D E F G H

J K L

N O P

Note: Each byte consists of 8 bits, but the frequency converter uses only the last 4 bits.

The control possibilities of the VLT

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Chapter 6

■■

■ Description of parameters .........................Page 61

Description of parameters

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

002 Setup copy (MENU SET COPY)

Value: ✭ No copy (DO NOT COPY) [0]

Copy setup 1 to 2 (COPY 1 TO 2) [6] Copy setup 2 to 1 (COPY 2 TO 1) [7] Copy from fact.setting to 1 (FACTORY TO 1) [8] Copy from fact.setting to 2 (FACTORY TO 2) [9]

Function: You can copy Setup 1 to Setup 2 and vice versa. You can always copy the factory setting back to Setup 1 or Setup 2.

Description: Copying starts when you have recorded the required data value and have stored it by pressing the “Menu” key. The software will always return to No copy when copying has been accomplished. Copying takes about 45 seconds. Time out does

not activate the

copying function.

003 Operation site (LOCAL /REMOTE) Value: ✭ Remote (REMOTE) [0]

Local with external stop (LOC/EXT.STOP) [1] Local (LOCAL) [2] Local and remote (LOCAL+REMOTE) [3]

Function: You can choose four different operation sites:

Remote, Local with external stop, Local and Local and remote.

Description: If you choose Remote, you can control the frequency converter via the control terminals. However, you can still use the stop key of the control panel (provided you have not chosen to disable this function in parameter 007). If you choose Local with external stop you must dis- connect the connection between terminals 12 and 27 to activate stop. Local with external stop can only be chosen if Motor coasting, Quick stop, Reset and mo- tor coasting or stop have been chosen in parameter 404 (terminal 27). Choose Local if you want to operate the unit via the keyboard (must be activated in parameter 007). Local and remote adds local and external reference. This function is selected for access to local reference even when the unit is operated remotely.

Description of parameters

000 Language select (LANGUAGE)

Value: ✭ English (ENGLISH) [0]

German (DEUTSCH) [1] French (FRANCAIS) [2] Danish (DANSK) [3]

Function: The choice in this parameter defines the language to be shown in the display.

Description: You can choose between English, German, French

and Danish.

001 Menu setup select (MENU SETUP) Value: ✭ Setup (SETUP 1) [1]

Setup (SETUP 2) [2] Multi setup (MULTI SETUP) [5]

Setup Terminal 29 10 21

Function: You can select a menu setup which is different from the factory setting and store it in Setup 1 or Setup 2.

Description: You start by selecting the setup you want to make or alter. You can choose between Setup 1 or Setup 2. Then you can alter any data value you like. Your alterations make a setup different from the factory setting. If you choose Multi-setup you can switch between the two setups via terminal 29. The parameters which can be chosen for the two setups have been specially selected. See page 102. For how to change to factory setting see page 48.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

■

Description of parameters

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

■

008 Local reversing (LOCAL/FWD/REV) Value: ✭ Disable (DISABLE) [0]

Enable (ENABLE) [1]

009 Local jog (LOCAL JOG) Value:

Disable (DISABLE) [0]

✭ Enable (ENABLE) [1]

010 Local reference (LOC REFERENCE) Value:

Disable (DISABLE) [0]

✭ Enable (ENABLE) [1]

Enable and save (ENABLE AND SAVE) [2]

Function: You can enable/disable the function via the control panel. Furthermore you can choose whether it must be possible to change the output frequency via parameter 004.

Description: If you choose Disable in parameter 006, 007, 008 or 009 you cannot activate the function via the control panel. If you choose Disable in parameter 010 the output frequency cannot be changed via parameter 004. You can prevent data change by setting parameter 013 to Locked. If you choose Enable and save a change of local speed reference will be saved automatically after 15 sec.

013 Data change lock (DATA CHC. LOCK) Value: ✭ Not locked (NOT LOCKED) [0]

Locked (LOCKED) [1]

Function: There is a way to avoid unintended programming.

Description: If you choose Locked you cannot make any data change in any parameter. However, it is still possible to change the local reference. If data change is attempted with data change lock, the display shows: DATA LOCKED.

■

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

004 Local reference (LOCAL SPEED) Value:

0-f

MAX

Function: You choose Local reference if you want to set the speed (frequency) via the control panel.

Description: To use this parameter you must choose Local with external stop or Local and remote in parameter 003. The output frequency of the frequency converter can be changed by means of the “+” and “−” keys. If the mains supply is disconnected the value changes to

0.00. Parameter 004 cannot be controlled via the serial bus, RS 232. There is no automatic switch back to Parameter group from this parameter. In parameter 010 you can lock data changes in parameter 004.

005 Display value (VALUE AT MAX.) Value:

1 - 9999 ✭ 1000

Function: You can choose to have the speed/frequency displayed without the unit Hz behind the value.

Description: The value will only be read out if Display is selected in Display group. It is not possible to change Hz to another unit.

006 Local reset (LOCAL RESET) Value:

Disable (DISABLE) [0]

✭ Enable (ENABLE) [1]

007 Local start / stop (LOC START/STOP) Value:

Disable (DISABLE) [0]

✭ Enable (ENABLE) [1]

Description of parameters

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

103 Motor power (MOTOR POWER)

Value:

Under size [0]

✭ Nom. size [1]

Over size [2]

Function: Using this parameter you can select the kW value closest to the motor’s rated output. The frequency converter has three preset kW values. The exact kW value will depend on unit type.

Description: Read the rated motor power on the type plate of the motor and choose the relevant factory setting for the motor size. Parameters 107, 108, 109, 110, 111 and 112 change automatically when the value in parameter 103 is changed.

104 Motor voltage (MOTOR VOLTAGE) Value:

Only 200-240 V units 200 V (200 V) [0] 208 V (208 V) [1]

✭ 220 V (220 V) [2]

230 V (230 V) [3] 240 V (240 V) [4]

Only 380-460 V units 380 V (380 V) [0]

✭ 400 V (400 V) [1]

415 V (415 V) [2] 440 V (440 V) [3] 460 V (460 V) [4]

Function: Using this parameter you can select the rated voltage closest to the motor’s voltage.

Description: You can choose among different voltage values. The value is selected on the basis of the data on the motor plate. Parameters 107, 108, 109, 110 and 111 are changed automatically when the value of parameter 104 is changed.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

101 Speed control (SPEED CONTROL)

Value:

Open loop (OPEN LOOP) [0]

✭ Slip comp. (SLIP COMP) [1]

Closed loop (CLOSED LOOP) [2]

Function: You can choose among three different kinds of speed control: Open loop, Slip compensated and Closed loop.

Description: Choose Slip compensation for normal operation, where the speed must be constant no matter what the load is. Choose Open loop when the motors used are parallel-connected in parallel or when synchronous motors are used. Choose Closed loop when you want operation with process feedback. For closed loop operation you must choose the feedback type in parameter 114 (current, voltage or pulses). See also the section on PI controller, page 53.

102 Current limit control (CURRENT LIMIT) Value: ✭ Preprogrammed value (PROGRAM SET) [0]

Voltage signal (10 VDC SIGNAL) [1] Current signal (20 mA SIGNAL) [2]

Function: You can choose to control the speed by means of the current limit. This makes indirect torque control possible. The current limit can be set in parameter 209 or by means of a current or voltage signal in parameter 412 or 413.

Description: Choose between controlling the current limit via parameter 209 or one of the analogue inputs, terminal 53 or 60. 10 V / 20 mA corresponds to 160 % current (2030: 140 %). Do not select the same signal for PI control.

■

■■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

109 Start voltage (START VOLTAGE) Value: (automatically set)

0 - (U

M,N

+ 10%)

Function: By increasing the start voltage you can achieve higher starting torque. Small motors (< 1.0 kW) usually require high start voltage. On parallel coupling of motors, only the start voltage can be used to increase the starting torque.

Description: Do not forget to consider that the motor must be able to start with the required torque:

1. Choose a value to make start possible with the load in question.

2. Reduce value until start with the load in question is just possible.

3. Choose a value where operation in the rest of the frequency range is possible at the lowest possible current consumption.

If the start voltage makes normal operation impossible, you can change the U/f ratio in parameter 111.

Warning: If the use of start voltage is over-

done it can lead to magnetic saturation and motor overheating and the frequency converter may trip out. Therefore take care when using the start voltage parameter.

105 Motor frequency (MOTOR FREQ) Value: ✭ 50 Hz (50 Hz) [0]

60 Hz (60 Hz) [1] 87 Hz (87 Hz) [2]

100 Hz (100 Hz) [3]

Function: Using this parameter you can select the frequency equivalent to the motor’s rated frequency.

Description: You can choose among 4 different frequency values. The value is selected on the basis of the data on the type plate of the motor. The U/f ratio in parameter 111 is changed automatically.

107 Motor current (MOTOR CURRENT) Value:

MAG (par.108)

- I

VLT,MAX(PA R. 209)

Function: The motor’s rated current is included in the VLT frequency converter’s calculation of e.g. torque, thermal motor protection and cut-out level.

Description: You must record the rated motor current (Amp). The value will appear from the motor plate.

108 Motor magnetising current (MOTOR MAG.AMP) Value:(automatically set)

0.3 - I

M,N (par.107)

Function: The VLT frequency converter uses the value for different calculations such as compensation.

Description: If the factory setting is unsuitable the motor current on running idle should be measured with a suitable amperemeter (RMS). The magnetising current is then set to the measured value.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

110 Start compensation (START COMP.)

Value: (automatically set)

0.00 - 99 V/A

Function: Using this parameter you can make a load-dependent torque adaptation. This is for example used for motors and applications where there is a large difference between the motor’s full-load current (parameter 107) and no-load current (parameter 108).

Description: If the factory setting is not sufficient, you can set the parameter so that the motor can start at the actual load. You can also combine start compensation with parameter 109.

Warning: Should not be used with

synchronous motors and parallel-coupled motors and where quick load changes may occur. To avoid instability do not increase the value more than necessary.

111 U/f ratio (V/F. RATIO) Value: (automatically set)

0.00 - 20 V/Hz

Function: Using this parameter you can change the linear ratio between voltage (U) and frequency (f) to ensure correct motor magnetisation, optimal dynamics, accuracy or efficiency,

Description: Use the parameter only if you cannot record the correct motor data in parameters 104 and 105. The value can be calculated as follows:

U/f =

Motor voltage (para. 104) Motor frequency (para. 105)

The value of the factory setting is based on no-load operation. Therefore it is lower than the value calculated. The compensation will give the necessary voltage supplement.

112 Slip compensation (SLIP COMP) Value: (automatically set)

0.0 - 20Hz

Function: Slip compensation increases the output frequency and voltage of the VLT frequency converter with an increasing load to compensate for the motor’s increasing slip (loss). This achieves a loadindependent speed.

Description: Choose a value so that the speed remains constant when the load increases. If the value is too high the speed increases with the load. This may lead to unstable motor operation. When you use synchronous motors and motors connected in parallel, set slip compensation to 0 Hz. Slip compensation should be avoided in case of high dynamics.

114 Feedback type (FEEDBACK TYPE) Value:

Voltage (VOLTAGE 10 V) [0]

✭ Current (CURRENT 20 mA) [1]

Pulses (PULSES) [2]

Function: Using this parameter you can choose the process feedback type when you use a PI controller (must be selected). See also the decription of parameter 101 and the section on the PI controller, page 53.

Description: When using the PI controller, you must use one of the inputs of terminal 29, 53 or 60 for the feedback signal. Parameters 405, 412 and 413 must be set according to the feedback signal selected. Naturally these choices block the same type of reference signal.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

119 FF factor (FEED FWD FACTR) Value:

0 - 500% ✭ 100%

Function: This parameter is used in connection with a PI controller. The FF factor sends a large or small part of the reference signal around the PI controller so that the PI controller only affects part of the control signal. Any change of the setpoint will therefore directly affect the motor speed. The FF factor gives high dynamics at changes of the setpoint and less overswing.

Description: You can choose the required percentage value in the interval f

MIN

- f

MAX.

Choose a value above 100% if the setpoint variations are only minor.

120 Controller range (CONTRL RANGE) Value:

0 - ✭ 100%

Function: The controller range (band width) limits the output from the PI controller as a percentage of f

MAX.

Description: You can choose a percentage value of f

MAX

. If the controller range is reduced the speed variations will be lower during adjustment.

Warning: The output frequency is limited by

0.9 x f

MIN

and 1.1 x f

MAX

no matter what the band width setting is. The controller can therefore be active without affecting the output frequency. When the PI controller is active the output frequency can exceed f

MAX

by 10%.

121 Proportional gain (PROPRT /L GAIN) Value:

0.01 - 10.00 ✭ 0.01

Function: The proportional gain indicates how many times the deviation (between feedback signal and setpoint) must be amplified.

Description: Fast regulation is obtained when amplification is high. The value can be too high, and then the process may become unstable.

122 Integral time (INTEGRAL TIME) Value:

0.01 - 7200 sec. ✭(OFF)

Function: The integral time determines how long the PI controller takes to regulate the signal. The integral time will delay/dampen the signal.

Description: Fast regulation is obtained when the integral time is short. The value can be too short, making the process unstable. When the integral time is long regulation is slow. “Off” means that the function is not active.

125 FB-factor (FEEDBACK SCALE) Value:

0 - 500% ✭ 100%

Function: The FB factor is used if the transmitter cannot be selected optimally to the scaling range of the input signals.

Description: This parameter is only used if the feedback signal in parameter 114 is not of a suitable level. If you choose 100% the feedback signal is not changed.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

When the PI controller is active the maximum frequency can be exceeded by 10%. The

same applies when slip compensation is active.

200 Frequency range (FREQ RANGE) Value: ✭ 0 - 120 Hz [0]

0 - 500 Hz [1]

Function: Using this parameter you can set and thus limit the output frequency range of the VLT frequency converter.

Description: In most cases you can use 0-120 Hz.

Warning: Only choose 0-500 Hz if you use special motors designed for high speeds.

201 Min. frequency (MIN FREQUENCY) Value:

0.0 - f

MAX

✭ 0

Function: Using this parameter you can record a lowest frequency limit corresponding to the required minimum motor speed. The minimum frequency can never be higher than the maximum frequency.

Description: You can choose a value from 0.0 Hz to the value selected in parameter 202 for max. frequency.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

202 Max. frequency (MAX FREQUENCY)

Value:

0.0-value in para. 200 ✭ 50 HZ

Function: Using this parameter you can record a highest frequency limit corresponding to the motor’s maximum speed.

Description: You can choose a value from f

MIN

to the value selected

in parameter 200 for f

MAX

(120 Hz or 500 Hz).

203 Jog frequency (JOG FREQUENCY) Value:

0.0-f

MAX

✭ 10 Hz

Function: This is the fixed output frequency you can select when the “Jog” key is active. See also the description of parameter 511.

Description: The jog frequency can be lower than f

MIN

(para. 201)

but the highest output frequency is limited by f

MAX

(para. 202)

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Description: By means of terminal 29 you can switch between the other references (terminal 29 = 0 V) and the sum of the other/digital references (terminal 29 = 24 V). You must select Digital reference select in parameter 402 and 403 to select one of the digital references:

18/27 19 Terminal

0 0 Digital reference 1 1 0 Digital reference 2 0 1 Digital reference 3 1 1 Digital reference 4

209 Current limit (CURRENT LIMIT) Value:

0.3 - I

VLT,MAX

Function: Using this parameter you can set the maximum allowable output current of the VLT frequency converter. If the current limit is exceeded the output frequency is reduced until the current falls to the current limit. The output frequency does not increase to the set reference value until the current has fallen to below the current limit.

Description: The factory setting corresponds to a load which is 160% (VLT 2030 1/3 x 208-240 V:140%) of the rated output current. If you want to use the current limit as motor protection you must record the rated motor current. Using parameter 310 you can record how long you want the frequency converter to operate at current limit before tripping out.

The load range of 100-160% is only for intermittent operation and therefore the unit can only give an output of 160% ((VLT 2030 1/3 x 208-240 V: 140%) for 60 seconds. Operation time is extended at decreasing load and is unlimited at 100%.

Description of parameters

204 Digital reference type (DIG. REF. TYPE)

Value: ✭ Sum (SUM) [0]

Relative (RELATIVE) [1]

Function: The digital references are generated internally in the unit and presented as a percentage of the difference between the f

MAX

and f

MIN

selected in parameters 201

and 202, added to f

MIN

Description: If Sum is selected, one of the digital references (parameters 205-208) is added as a percentage of the difference between f

MAX

and f

MIN

with the other references. If Relative is selected, one of the digital references (parameters 205-208) is added as a percentage of the sum of the other references.

205 Digital reference 1 (DIG. REF. 1)

Value:

−100.00% - +100.00% ✭ 0

206 Digital reference 2 (DIG. REF. 2)

Value:

−100.00% - +100.00% ✭ 0

207 Digital reference 3 (DIG. REF. 3)

Value:

−100.00% - +100.00% ✭ 0

208 Digital reference 4 (DIG. REF. 4)

Value:

−100.00% - +100.00% ✭ 0

Function: The digital speed references are generated internally in the unit and presented as a percentage of the f

MAX

value. The percentage value is added to any analogue reference from terminals 53 and 60.

■

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

If the switching frequency is higher than 4.5 kHz this period will be shorter.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

215 Ramp-up time 1 (RAMP UP TIME)

Value:

0.1 - 800 seconds ✭ 5 s

Function: Using this parameter you can record the required acceleration time from 0.1 Hz to the rated output frequency (parameter 105).

Description: To ensure the fastest possible start, choose a value for the ramp-up time so that the current limit is not activated. The ramp-up time is always defined as the acceleration time from 0 Hz to the rated motor frequency.

216 Ramp-down time 1 (RAMP DOWN TIME) Value:

0.1 - 800 seconds ✭ 5 s

Function: Using this parameter you can record the required deceleration time from rated output frequency to 0 Hz.

Description: The ramp-down time can be selected in the range

0.1-800 seconds. If the ramp-down time is too short the VLT’s voltage limit becomes active, which will extend the ramp-down time. Short ramp-down times will require a VLT unit with a brake function and installation of a brake resistor. The ramp-down time is always defined as the deceleration time from the rated motor frequency to 0 Hz.

210 Warning: frequency low (LOW FREQ WARN) Value:

0 - 500 H

Z ✭ 0 Hz

Function: Using this parameter you can set a value for when alarm must be given for f

LOW

within the normal

operational range of the VLT frequency converter.

Description: If the output frequency falls below the warning limit f

LOW,

the display shows: LOW FREQ ALARM. You can also choose to program the signal outputs in parameters 408 and 409 to give a signal.

211 Warning: frequency high (HI FREQ WARN) Value:

0 - 500 Hz ✭ 120 Hz

Function: Using this parameter you can set a value for when alarm must be given for f

HIGH

within the normal

operational range of the VLT frequency converter.

Description: If the output frequency exceeds the warning limit f

HIGH,

the display shows: HI FREQ ALARM. You can also choose to program the signal outputs in parameters 408 and 409) to give a signal.

213 Warning: current high (HI CURR WARN) Value:

0.0 - I

VLT,MAX

✭ I

VLT,MAX

Function: Using this parameter you can set a value for when alarm must be given for I

HIGH

within the normal

operational range of the VLT frequency converter.

Description: If the output current exceeds the warning limit I

HIGH

the display shows: HI CURR ALARM. You can also choose to program the signal outputs in parameters 408 and 409 to give a signal.

218 Quick stop ramp (ALT: DOWN RAMP) Value:

0.1 - 800 seconds ✭ 1 s

Function: Using this parameter you can choose an alternative deceleration ramp - a programmable quick stop ramp.

Description: The ramp-down time can be selected in the range

0.1-800 seconds, calculated from the rated frequency to 0 Hz. If the ramp-down time is too short the VLT’s voltage limit becomes active, which will extend the ramp-down time. Short ramp-down times will require a VLT unit with a brake function and installation of a brake resistor.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

300 Brake function (BRAKE OPTION)

Value: ✭ Not applied (NOT APPLIED) [0]

Applied (APPLIED) [1]

Function: Using this parameter you can inform the VLT frequency converter that a brake function and a brake resistor have been connected. For information on sizing, see page 30.

Description: Choose Applied if you use a brake function and a brake resistor.

306 DC braking time (DC-BRAKE TIME) Value: ✭ 0 - 60 sec. ✭ 0 sec.

Function: Using this parameter you can record how long the DC braking must be active.

Description: When you choose the braking time you must consider if you want to maintain the braking torque or if you want to use a stop function. The DC braking time must be ≠ 0 to activate DC braking.

307 DC-brake cut-in frequency (DC-BRK ON FREQ) Value: ✭ 0 - 500 Hz ✭ 1 Hz

Function: Using this parameter you can record the output frequency at which DC braking must start when ramping down to standstill.

Description: The cut-in frequency depends on the application. The cut-in frequency must be > 0 to activate DC braking. Instead of using this parameter you can activate DC braking via terminal 27 if a DC braking time and a DC brake voltage have been recorded.

224 Carrier frequency (CARRIER FREQ.) Value:

2 - 16 kHz ✭ 4.5 kHz

Function: To avoid or reduce motor noise you can increase or reduce the carrier frequency of the frequency converter.

Description: It is possible to change the carrier frequency between 2 and 16 kHz. The disadvantages of operating at a high carrier frequency are:

− reduced continuous output current, see page 95.

− reduced efficiency.

− higher capacitive leakage current.

− increased RFI radiation from the VLT frequency

converter.

See also the derating curve on page 95.

The disadvantages of a too low carrier frequency are a less ideal output current and motor loss.

230 Digital speed up/down (SPEED UP DOWN) Value: ✭ Disable (DISABLE) [0]

Enable (ENABLE) [1] Enable and save (ENABLE+STORE) [2]

Function: Using this parameter you can make the VLT frequency converter lock the output frequency to the latest indicated speed reference.

Description: You can choose to have either digital speed up/down (terminal 18/27 and 19) or other speed references. When you have chosen Enable you must choose Speed up (terminal 18) and Speed down (terminal 19) in parameters 402/404 and 403. When Enable and save is selected a speed will be saved automatically after 15 seconds so that the unit remembers this frequency after new start-up. The other references will not be active so that the digital references cannot be combined with other references.

■

■■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

310 Trip delay at current limit (TRIP DLY@C.LIM)

Value:

0 - 60 sec.

✭ Infinite at 61

Function: Using this parameter you can record how long the current limit may be active before trip.

Description: Record the delay time.

Warning:If you choose Infinite, and your load is between 105% and 160%, trip may occur

after a given interval.

315 Motor thermal protection (MOTOR THERMAL)

308 DC brake voltage (DC-BRK VOLTAGE)

Value:

0 - 50 V ✭ 10 V

Function: Using this parameter you can record the DC brake voltage for the motor.

Description: The size of the voltage depends on the motor size. The bigger the motor the lower the DC brake voltage.

Warning: At frequent DC-braking the DC

brake voltage should not be too high. This is to avoid motor overload. The DC brake voltage must be > 0 to activate DCbraking.

309 Reset mode (RESET MODE) Value: ✭ Manual reset (MANUAL) [0]

Auto reset 1 (AUTORESET 1) [1] Auto reset 5 (AUTORESET 5) [5]

Function: Using this parameter you can choose how you want to reset an alarm.

Description: If you choose Manual reset you must reset the VLT frequency converter via the keyboard or via terminals 19, 27 or 29. The display shows TRIP. If you choose Auto reset 1 the VLT frequency converter will automatically try to reset once after alarm. The display shows AUTO START As long as the display shows AUTOSTART the unit will try to reset every 20 minutes. If you choose Auto reset 5 the VLT will automatically try to reset 5 times after alarm. The display shows AUTO START.

Warning: The motor may start without

warning, if Auto reset selected.

Value: ✭ Off (PROTECT OFF) [0]

Only warning (ONLY WARNING) [1] Trip (TRIP) [2]

Function: The VLT frequency converter calculates if the motor temperature exceeds the limits allowed. The calculation is based on 1.16 x rated motor current at rated fre-quency (parameter 107).

Description: Choose Off if you do not want any display indication of either warning or trip. Choose Only warning if you want display indication for motor overloaded. You can also program the frequency converter to give a warning signal via the signal outputs (parameters 408 and 409). Choose Trip if you want warning and trip to be displayed.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

402 Terminal 18 start (INPUT 18) Value: ✭ Start (START) [0]

Pulse start (LATCH START) [1] No function (NO OPERATION) [2] Speed up (SPEED UP) [3] Digital reference select (SPEED SELECT) [4] Reversing (REVERSING) [5] Reset and start (RESET&START) [6] Motor coasting and start (COAST/START) [7]

Function: Using this parameter (terminal 18) you can give the motor various start signals.

Description:

Start:

24 V on terminal 18 will make the motor ramp up to the set reference. 0 V will make the motor ramp down to stop.

Pulse start:

On selection of Press cont. in parameter 402 and application of a pulse (24 V) to terminal 18, the motor wll ramp up to the set reference. Further pulses do not have any effect. Therefore the motor must be stopped via terminal 27 (parameter 404)

No function:

Locks the input.

Speed up:

This is used together with parameter 230. It is possible to make the output frequency increase towards f

MAX

as long as 24 V is applied to terminal 18. At 0 V on terminal 18 the output frequency in question is maintained. See also parameter 403.

Digital reference select:

Together with parameter 403 you can choose between four different digital references:

18/27 19 Terminal

0 0 Digital reference 1 1 0 Digital reference 2 0 1 Digital reference 3 1 1 Digital reference 4

Description of parameters

Reversing:

If the motor reverses when 24 V is applied to terminal 18, it will change direction again when 0 V is applied to the terminal.

Reset and start:

The function can be used as start when terminals 27 and 19 are used to select between the digital references and terminal 29 to change setup (8 digital speeds). 24 V applied to terminal 18 resets the VLT frequency converter and the motor ramps up to the set reference according to the ramp-up time set in parameter 215.

Motor coasting and start:

24 V applied to terminal 18 makes the motor ramp up to the set reference. 0 V applied to terminal 18 sets the motor to coasting, running freely until it stops. This can be used in connnection with a mechanical brake.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

404 Terminal 27 stop (INPUT 27)

Value:

Motor coasting (MTR.COASTnot) [0] Quick stop (Q-STOPnot) [1] DC-brake (DC-BRAKEnot) [2]

✭ Reset and motor coasting (RESET&COASTnot) [3]

Stop (STOPnot) [4] Reset and start (RESET&START) [5] Speed up (SPEED UP) [6] Digital reference select (SPEED SELECT) [7]

Function: Using this parameter (terminal 27) you can give the motor various stop signals.

Description:

Motor coasting:

If 0 V is applied to terminal 27 the motor will be coasting until standstill.

Quick stop:

If 0 V is applied to terminal 27 the motor will be braking until standstill according to the ramp-down time set in parameter 218. A DC current brakes the motor after ramping down to 0, according to the setting of parameters 306-308.

DC brake:

If 0 V is applied to terminal 27 the motor will brake to standstill according to the settings of parameters 306 and 308.

Reset and motor coasting:

If 0 V is applied to terminal 27 the motor will start coasting and the VLT frequency converter is reset.

Stop = press:

A circuit breaker between terminals 12 and 27. When opened briefly this circuit breaker causes ramp-down to stop.

Reset and start:

This can be used as a start function when you use terminals 18 and 19 to select a digital reference. 24 V applied to terminal 27 will make the frequency converter reset and the motor ramp up to the set reference

according to the ramp-up time set in

parameter 215.

(continued overleaf)

403 Terminal 19 reversing (INPUT 19) Value: ✭ Reversing (REVERSING) [0]

Start reversing (LATCH START) [1] No function (NO OPERATION) [2] Speed down (SPEED DOWN) [3] Digital reference select (SPEED SELECT) [4] Reset (RESET) [5]

Function: Using this parameter (terminal 19) you can e.g. change the motor’s direction.

Description:

Reversing:

Reverses the motor, when 24 V is applied to terminal 19 and changes the rotation direction again when 0 V is applied to the terminal.

Start reversing:

Reverses the motor, when 24 V is applied to terminal

19. The motor stops when 0 V is applied to the terminal.

No function:

Locks the input.

Speed down:

This is used together with parameter 230. It is possible to make the output frequency drop towards f

MIN

, as long as 24 V is applied to terminal 19. At 0 V applied to terminal 19, the output frequency in question is maintained. See also parameter 402.

Digital reference select:

Together with parameter 402 you can choose between four different digital references:

18/27 19 Terminal 0 0 Digital reference 1 1 0 Digital reference 2 0 1 Digital reference 3 1 1 Digital reference 4

Reset:

In case of alarm the VLT frequency converter can be reset by applying 24 V to terminal 19.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

■

Description of parameters

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

405 Terminal 29 Jog (INPUT 29)

Value: ✭ Jog (JOG) [0]

Start (START) [1] Digital reference (DIG.REF+START) [2] Pulse input, 100 Hz (PULSES 100 Hz) [3] Pulse input, 1 kHz (PULSES 1 kHz) [4] Pulse input, 10 kHz (PULSES 10 kHz) [5] Setup select (SETUP SELECT) [6] Reset (RESET) [7] Reversing (REVERSING) [8] Speed down (SPEED DOWN) [9]

Function: Using this parameter (terminal 29) you can give the motor different signals.

Description: You can set the output frequency to a pre-programmed value (jog in parameter 203). Recording Digital reference you can enable/disable values stored in parameters 205-208. If terminal 29 is used for either pulse signal reference (open loop) or pulse signal feedback (closed loop), choose one of the pulse inputs [3] - [5]. If Multi setup is selected in parameter 001, the termi- nal can be used to switch between setups 1 and 2.

404 Terminal 27 stop (INPUT 27) (continued) Value:

Motor coasting (MTR.COASTnot) [0] Quick stop (Q-STOPnot) [1] DC-brake (DC-BRAKEnot) [2]

✭ Reset and motor coasting (RESET&COASTnot) [3]

Stop (STOPnot) [4] Reset and start (RESET&START) [5] Speed up (SPEED UP) [6] Digital reference select (SPEED SELECT) [7]

Speed up:

This is used together with parameter 230. It is possible to make the output frequency increase towards f

MAX

as long as 24 V is applied to terminal 18. At 0 V on terminal 18 the output frequency in question is maintained. See also parameter 403.

Digital reference select:

Together with parameter 402 you can choose between four different digital references:

18/27 19 Terminal 0 0 Digital reference 1 1 0 Digital reference 2 0 1 Digital reference 3 1 1 Digital reference 4

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Description of parameters

408 Terminal 46 output (LOG.OUTPUT 46)

Value:

Unit ready (UNIT READY) [0]

✭ Unit ready remote control (UNT RDY CRTL)) [1]

Enabled no warning (ENABLEDnoWR) [2] Running (RUNNING) [3] Running no warning (RUNNINGnoWR) [4] Running in range no warning

(RNinRGEnoWR) [5]

Speed = reference no warning

(RUN@REFnoWR) [6] Alarm (ALARM) [7] Alarm or warning (ALARMorWARN) [8] Current limit (CURRENT LIMIT) [9] Out of frequency range (OUT FRQ RGE) [10] Out of current range (OUT CURR RGE) [11] Reversing (REVERSING) [12] Pulse output 15 Hz - 1.5 kHz (PULSOUT 1500)[13] Pulse output 15 Hz - 3.0 kHz (PULSOUT 3000)[14] Pulse output 15 Hz - value in parameter 005 (PULS-PAR 005) [15] Send/receive RS 485 (SEND/REC NEG) [18] Receive/send RS 485 (SEND/REC POS) [19]

Function: Using this parameter you can choose between different output signals. The output is an open collector output and therefore a pull-up resistor must be connected to terminal 12 (+24 V).

Description: For the pulse output the lowest output frequency is 15 Hz and the highest output frequency is 5 kHz. RS 485 send/receive control is used when the serial port is connected to the RS 485 network via a RS 232/RS 485 adapter.

Connection example where the signal is

active high:

Connection example where the signal is

active low:

Connection example using

RS 232/485 adapter:

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Description of parameters

409 Terminal 01

Relay output (RELAY OUT 01)

Value: ✭ Unit ready (UNIT READY) [0]

Unit ready remote control (

UNT RDY CRLT) [1]

Enabled no warning (ENABLEDnoWR) [2] Running (RUNNING) [3] Running no warning (RUNNINGnoWR) [4] Running in range no warning

(RNinRGEnoWR) [5] Running on reference no warning

(RUN@REF noWR) [6] Alarm (ALARM) [7] Alarm or warning (ALARMorWARN) [8] Current limit (CURRENT LIM) [9] Out of frequency range (OUT FRQ RGE) [10] Out of current range (OUT CURR RGE) [11] Reversing (REVERSING) [12]

Description: You can use the relay output 01 to indicate selected status and warnings. The relay is activated when the conditions for the selected data values are fullfilled. When relay output 01 is not active, there is no connection between terminal 01 and terminal 02. The relay output is potential-free and the maximum load is 2 A at 24 V DC or 250 V AC.

■

411 Analogue input current (ANALOG REFTYPE) Value: ✭ Linear between min. and max. (LINEAR) [0]

Proportional with lower limit (PROP W/MIN) [1]

Function: Is used to determine which frequency converter is to follow an analogue reference signal.

Description: When you select [1] the reference signal will not affect the output frequency until it reaches a value equivalent to the set minimum frequency (parameter 201).

412 Terminal 53

Analogue input voltage (INPUT #53)

Value:

No function (NO OPERATION) [0]

✭ 0-10 V (0-10 VDC) [1]

10-0 V (10-0 VDC) [2]

Description: Record the polarity of analogue control signals to inputs 53 and 60. You can choose between voltage, current and polarity. If you use both inputs for reference signals the total reference signal will be a summation.

413 Terminal 60

Analogue input current (INPUT #60)

Value:

No function (NO OPERATION) [0]

✭ 0-20 mA (0-20 mA) [1]

4-20 mA (4-20 mA) [2] 20-0 mA (20-0 mA) [3] 20-4 mA (20-4 mA) [4]

Description: If you are using a PI controller one of the inputs or the pulse input must be used for the feedback signal. If you are using current control, one of the inputs must be used to set a current limit. Naturally these choices block the same type of reference signal.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

500 Address (ADDRESS)

Value:

01- 99 ✭ 01 101- 199 (01-99 echo)

Function: Using this parameter you set the bus address for each VLT via the control panel. However, the first telegram after the voltage connection can change the bus address. This means that address change from the bus is no longer possible. The echo function enables connection of several VLT 2000 frequency converters to the same PC.

Description: Specify an address of each unit connected. If the PC/ PLC addresses 00, all drives connected will be written to at the same time. The units will in this case not give a reply to the master. Address change via bus enables address change on units without display. The echo function is active on address 101-199, shown as 01-99 ECHO. The ring is built up by connecting Tx on the first VLT to Rx on the next VLT.

The last unit’s Tx is connected to Rx on the PC. Terminal 20 (frame) must be connected throughout, but with the PC connected at only one end.

501 Bit/sec. baud rate (BAUD RATE) Value:

300, 600, 1200, ✭ 1200

Function: Using this parameter you can set the speed at which a character is transmitted via the RS 232 port. It is defined as the number of bits transmitted per second.

Description: The transmission rate of the VLT frequency converter must be set in accordance with the transmission rate of the PLC/PC applied. The transmission rate can only be altered via the control panel.

502 Data readout (DATA READOUT) Value:

✭ [0] Reference (REFERENCE %) ....................... %

[1] Frequency (FREQUENCY Hz)................... Hz

[2] Display/Feedback (FEEDBACK UNIT) ... "unit"

[3] Current (CURRENT) .................................... A

[4] Torque (TORQUE %) .................................. %

[5] Power (POWER kW)..................................kW

[8] Output voltage (OUT VOLT) ..........................V

[9] DC voltage (DC BUS) ...................................V

[10] Motor thermal load (RTR (M)) ..................... %

[11] VLT therm ETR (INVERT THERM) .............. %.

[12] Digital input (DIG. IN/CODE) ........ binary code

[13] Analogue input 1 (ANALOGUEin1) in terminal 53 [14] Analogue input 2 (ANALOGUEin2) in terminal 60 [15] Warning parameter (WARNING CODE)

binary code [16] Control word (CONTROL WORD) - see page 57. [17] Status word (STATUS WORD) - see page 56. [18] Alarm parameter (ALARM CODE) binary code

[19] Software version no. .......................... 4 digits

Description: Menu 502 can only be selected from the bus. These values are read-only values.

The PC/PLC may prompt for a value from an index

between 0 and 19.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Description of parameters

Warning parameter messages [15]: Frequency low re parameter 210 value: 32768 Frequency high re parameter 211 value: 16384 Current limit, re power section value: 8192 Key blocked value: 2048 Motor overload value: 1024 Inverter overload value: 512 Outside frequency range value: 256 Current higher than para. 213 value: 128 Data locked value: 64 Read only value: 32 Current limit re control card value: 16 Overvoltage value: 8 Undervoltage value: 4 Can only be changed in stop mode value: 2 Parameter limit value: 1

Usually only one warning occurs at a time, so one of the figures in parameter 502, index 15, will show. In the event of several simultaneous warnings, e.g. Motor overload and Current limit, re contral card, the two values are added:

Inverter overload 512 + Current limit re control card 16

Reading in para. 502, index 15: 528

Alarm parameter messages [18]: Excess temperature, re power section value: 16384 Earth connection value: 4096 Overvoltage value: 1024 Undervoltage value: 512 Unspecified inverter fault value: 256 Inverter overload value: 128 Motor overload value: 64 Short circuit value: 16 VLT attemps restart value: 8 Overcurrent value: 4 Trip locked value: 1

In contrast to warnings, alarms will always be combined, i.e. at least 2 of the alarm parameters apply, e.g. Unspecified inverter fault will usually occur with another alarm, e.g. Inverter overload. It will give the following reading:

Unspecified inverter fault 256 + Inverter overload 128

Reading in para. 502, index 18: 384

In case of Short circuit, Earth connection and Excess temperature, re power section, Trip locked will also occur. This will give a typical reading:

Earth connection 4096 + Unspecified inverter fault 256 + Trip locked 1

Reading in para. 502, index 18: 4353

503 Coasting (COAST) Value:

Digital (DIGITAL) [0] Bus (BUS) [1] Logical and (AND) [2]

✭ Logical or (OR) [3]

Description: See parameter 510

504 Q stop (Q-STOP) Value:

Digital (DIGITAL) [0] Bus (BUS) [1] Logical and (AND) [2]

✭ Logical or (OR) [3]

Description: See parameter 510.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

510 Speed select (SPEED SELECT)

Value:

Digital (DIGITAL) [0] Bus (BUS) [1] Logical and (AND) [2]

✭ Logical or (OR) [3]

Description: In parameters 503 to 510 you can choose to control the VLT frequency converter via the control unit’s terminals (digitally) and or via the bus.

When using Logical and and Bus values in parameters 503-510, the digital control terminals are either dependent on or overruled by the bus commands.

511 Bus jog 1 (BUS JOG 1) Value:

0 - 500 Hz ✭ 10 Hz

Function: Parameter 511 has the same function as parameter 203, but is controlled via the RS 232 port. You change over to jog frequency, which is a preset motor speed, by activating the “Jog” key. Using this function you have access to one additional jog frequency.

Description: For the jog frequency you can choose a value which is lower than f

MIN

, but cannot be higher than f

MAX

505 DC brake (DC-BRAKE) Value:

Digital (DIGITAL) [0] Bus (BUS) [1] Logical and (AND) [2]

✭ Logical or (OR) [3]

Description: See parameter 510.

506 Start (Start) Value:

Digital (DIGITAL) [0] Bus (BUS) [1] Logical and (AND) [2]

✭ Logical or (OR) [3]

Description: See parameter 510.

507 Direction (DIRECTION) Value: ✭ Digital (DIGITAL) [0]

Bus (BUS) [1] Logical and (AND) [2] Logical or (OR) [3]

Description: See parameter 510.

508 Reset (RESET) Value:

Digital (DIGITAL) [0] Bus (BUS) [1] Logical and (AND) [2]

✭ Logical or (OR) [3]

Description: See parameter 510.

509 Setup select (SETUP SELECT) Value:

Digital (DIGITAL) [0] Bus (BUS) [1] Logical and (AND) [2]

✭ Logical or (OR) [3]

Description: See parameter 510.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

Description of parameters

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

514 Bus bit 4 (BUS BIT 4) Value: ✭ Q stop (Q-STOP) [0]

DC-brake (DC BRAKE) [1]

Description: See parameters 404, 306, 307 and 308.

516 Bus reference (BUS REFERENCE) Value:

−100.00% - +100.00% ✭ 0

Description: If you choose Local reference in parameter 003 after choosing a bus reference, the bus reference will be transferred to local reference.

517 Store data values (STORE DATA) Value ✭ Off (OFF) [0]

On (ON) [1]

Description: Setting parameter 517 to On stores the downloaded values. Data values will be stored after you have pressed the “Menu” key. While the unit is storing data, the display will show (SAVE DATA) and flash in line C.

■

Description of parameters

606 Total operation hours (TOTAL OP HRS.)

Description: See parameter 610

607 Running hours (RUNNING HRS.)

Description: See parameter 610

608 Number of power-ups (NO. POWERUPS)

Description: See parameter 610

609 Number of over-temperature (NO. OVERTEMPS)

Description: See parameter 610

610 Number of over-voltage (NO. OVERVOLTS) Description: Information stored by the VLT frequency converter for later analysis. Parameter 606-607 are only updated every hour.

✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Display messages

Chapter 7 ■ Status messages....................................... Page 82

■ Alarm messages........................................ Page 82

■ Warning messages .................................... Page 83

■ Reset messages........................................ Page 83

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Status messages

UNIT READY Control card and power section are powered up and OK.

When the VLT frequency converter’s output frequency is reduced more quickly than the motor speed (due to inertia) can be changed, the motor will act as a generator. It will send energy back to the VLT and as a result the intermediate circuit voltate will increase.

ENAB STOP Unit ready and Q stop signal active.

START Enabled and start signal applied, no or too low reference signal.

RUN OK Unit is running on reference.

JOGGING

RAMPING

If the warning OVERVOLTAGE is displayed when the speed is reduced, you can increase the ramp-down time. If that is not posible, it may be necessary to activate the dynamic brake function with brake resistor. If the warning occurs in other situations, the problem is due to the mains supply.

Alarm messages

The following alarm messages are displayed after the power section of the VLT frequency converter has been disconnected.

Messages Caused by Consequence Reset possible INVERTER Unknown error (not one of those Yes FAULT errors mentioned below) OVER a: Supply voltage too high a: Lower supply voltage Yes VOLT b: Ramp-down time too short b: Increase ramp-down time or

activate brake function to avoid

overvoltage UNDER Supply voltage too low or Yes VOLTAGE loss of mains phase OVER Motor current too high or wrong Check motor parameters Yes CURRENT motor parameter setting Use a larger VLT GROUND Short circuit between VLT Check installation No, power off required, FAULT power section and ground and cable length then reset SHORT Short circuit between Check installation No, power off required, CIRCUIT two motor phases then reset OVER TEMP VLT temperature too high Check installation No, power off required,

then reset OVER Load too heavy Yes, after VLT LOAD thermal protection is

lower than 100% MOTOR Motor protection Yes, after VLT TRIP motor protection is zero

Display messages

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

*) The time is reduced at a higher switch frequency.

Reset messages

Messages Caused by Consequence Reset AUTO START VLT tripped The VLT attempts to restart - TRIP Fault condition of the VLT The power section Yes

or the motor section of the VLT stops

TRIP LOCKED Fault condition (over temp., short The power section No, power off

circuit, ground fault) of the VLT of the VLT stops required,

then reset

Messages Caused by Consequence Reset possible CURRENT LIMIT Over load VLT decreases speed - VOLTAGE HIGH Regenerative motor operation The power section of the VLT - -

or supply voltage too high stops within 5 sec.

VOLTAGE LOW Missing phase or low supply The power section of the VLT - -

stops within 5 sec.

INVERT TIME Inverter overload At 98.2% load VLT displays - -

the following warning: “INVERTER TIME”. At 100% load: “ALARM OVERLOAD”

MOTOR TIME Motor overload VLT operates at least 60 sec. *) - -

VLT operates between 100% and depending on the value of 160% of nominal motor power the load before the power

section of the VLT stops

LO FRQ WARN Output frequency lower than Depending on application

the value in parameter 210 Warning only

HI FRQ WARN Output frequency higher than Depending on application - -

the value in parameter 211 Warning only

HI CUR WARN Motor current higher than Depending on application - -

the value in parameter 213 Warning only

■

Display messages

Warning messages

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Chapter 8 ■ CE-labelling ............................................... Page 86

■ EMC .......................................................... Page 86

■ EMC test results ........................................ Page 90

■ Emission..................................................... Page 90

■ Immunity ................................................... Page 91

■ Acoustic noise ........................................... Page 92

■ Motor noise ............................................... Page 92

■ Extreme running conditions ....................... Page 92

■ Air humidity ............................................... Page 93

■ Efficiency ................................................... Page 93

■ du/dt measurements ................................. Page 94

■ Derating for high ambient temperature ...... Page 94

■ Derating for air pressure ............................ Page 95

■ Derating for running at low speed.............. Page 95

■ Derating for higher switching frequency

than 4.5 kHz.............................................. Page 95

■ Cut-in current .............................................Page 96

Special conditions

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Frequency converters must be CE labelled in accordance with the low-voltage directive.

What is CE labelling?

The machine directive (89/392/EEC)

All machines with critical, moving parts are covered by the machine directive. Since a frequency converter is largely electrical by function, it does not fall under the machine

The low-voltage directive (73/23/EEC)

The EMC directive (89/336/EEC)

■

The purpose of CE labelling is to avoid technical obstacles to trade within EFTA and the EU. The EU has introduced the CE labelling as a simple way of showing whether a product complies with the

relevant EU directives. The CE mark says nothing about the quality or specifications of a product. Three EU directives relate to frequency converters.

directive. However, if a frequency converter is supplied for use in a machine, we will provide information about the safety aspects relating to the frequency converter. We do that by the use of a manufacturer’s declaration.

EMC is short for electromagnetic compatibility. The presence of electromagnetic compatibility means that the mutual interference between different components/appliances is so small that the functioning

of the appliances is not affected. The EMC directive came into force on 1 January 1996. The directive distinguishes between components, appliances, systems and installations.

The EU “Guidelines on Application of Council Directive 89/336/EEC” outline three typical situations of using a frequency converter. For each of these situations, explanations are offered as to whether the situation in question is covered by the EMC directive and must be CE labelled.

1. The frequency converter is sold directly to the final

consumer. The frequency converter is for example sold to the domestic market. The final consumer is a layman. He installs the frequency converter himself for example for a hobby machine or a household machine. The frequency converter must be CE labelled according to the EMC directive.

2. The frequency converter is sold for installation in a

plant being built up on site by a professional installer. That could for example be a production plant or a heating/ventilation plant, which is designed and installed by professionals. Neither the frequency converter nor the complete plant has to be CE labelled according to the EMC directive. The plant, however, must comply with the basic EMC requirements of the directive. The installer can ensure this by using components, appliances and systems, which are CE-labelled according to the EMC directive.

3. The frequency converter is sold as part of a complete system. A system has an intrinsic function for the final user and is placed on the market as a single functional unit. That could for example be an air-conditioning system. The complete system must be CE labelled according to the EMC directive.The manufacturer of the system can ensure the CE labelling according to the EMC directive either by using CE labelled components or by testing the EMC performance of the system.

If he chooses to use only CE labelled components, he does not have to test the entire system.

The directive applies to all electrical equipment and applicances used in the voltage range of 50-1000 V AC and 75-1500 V DC.

■

Special conditions

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Special conditions

Danfoss VLT frequency converter and CE labelling

CE labelling is a positive feature when used for its original purpose, ie. to facilitate trade within the EU and EFTA. However, CE labelling may cover many different specifications. This means that it has to be checked what a given CE label specifically covers. The specifications covered can in fact be widely different. That is why the CE label can give installers a false feeling of security when using a frequency converter as a component in a system or an appliance.

We CE label our VLT frequency converter in accordance with the low-voltage directive. This means that as long as the frequency converter is installed correctly, we guarantee that it complies with the low-voltage directive. We issue a declaration of conformity confirming that our CE label complies with the low-voltage directive.

The CE mark also applies to the EMC directive, on condition that the instructions given in the manual for EMC correct installation and filtering are followed. On that basis a declaration of conformity with the EMC directive is issued.

To help ensure that your installation is EMC-correct, the manual provides detailed instructions for installation. Furthermore, we specify which norms that are complied with by which of our products.

We offer the filters that can be seen from the specifications and gladly provide other types of assistance that can help you obtain the best EMC result.

■

Compliance with EMC directive 89/336/EEC

In support of our claim that the VLT frequency converter complies with the protection requirements for emission and immunity under EMC directive 89/336/ EEC, a Technical Construction File (TCF) has been prepared for each model. Such a file defines the EMC requirements and the measurements made in accordance with harmonised EMC standards in a Power Drive System (PDS) that consists of a VLT frequency converter, a control cable and the controls (control box), motor cable and motor plus any options added. The Technical Construction File is prepared on this basis in cooperation with a duly authorised EMC laboratory (Competent Body).

In most cases the VLT frequency converter is used by professionals of the trade as a complex component forming part of a larger applicance, system or installation. It must be noted that the responsibility for the final EMC properties of the applicance, system or installation rests with the installer. As an aid to the installer, Danfoss has prepared EMC installation guidelines for the Power Drive System. The standards and testing levels stated for the Power Drive System are complied with, provided that the EMC-correct installation guidelines are applied.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Special conditions

A flat conductor, for example, has a lower HF impedance than a round conductor for the same conductor square value. If more than one applicance is installed in cabinets, the cabinet rear plate, which must be made of metal, should be used as a common earth reference plate. The metal cabinets of the different appliances are mounted on the cabinet rear plate using the lowest possible HF impedance. This avoids having different HF voltages for the individual appliances and avoids the risk of radio interference currents running in connection cables that may be used between the appliances. The radio interference will have been reduced.

cable). It must be pointed out that the necessary distance depends on the sensitivity of the installation and the signal cables, and that therefore no precise values can be stated. If cable trays are used, sensitive signal cables are not to be placed in the same cable trays as the motor cable or brake cable. If signal cables are to cross power cables, this should be done at an angle of 90 degrees. Remember that all interference-carrying in- or outgoing cables to/from a cabinet should be screened or filtered.

The cables must throughout their length be reinforced/double-isolated to other cables.

■

Earthing

The following basic issues need to be considered when installing a frequency converter, so as to obtain electromagnetic compatibility (EMC).

Safety earthing:Safety earthing:

Safety earthing: Please note that the frequency converter has a high leakage current and must be earthed appropriately for safety reasons. Apply local/national safety regulations. Use terminal 95 for reinforced earthing.

High frHigh fr

High fr

equency earthingequency earthing

equency earthing: Keep the earth wire connections as short as possible. Connect the different earth systems at the lowest possible conductor impedance. The lowest possible conductor impedance is obtained by keeping the conductor as short as possible and by using the greatest possible surface area.

Cables

The control cable and the filtered mains cable should be installed separately from the motor and brake cables to prevent interference coupling. Normally, a distance of 20 cm will be sufficient, but it is recommended to keep the greatest possible distance wherever possible, especially where cables are installed in parallel over a substantial distance.

With respect to sensitive signal cables such as telephone cables and data cables, the greatest possible distance is recommended with a minimum of 1 per 5 m of power cable (mains, motor and brake

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Special conditions

Radio interference in general

(emission)

Use of screened motor cable increases the leakage current. This is because screened cables have higher capacitance to earth than unscreened cables. If the leakage current is not filtered, it will cause greater interference on the mains in the radio leakage range under approx. 5 MHz. Since the leakage current is carried back to units through the screen, in principle this will give only a small electromagnetic field from the screened motor cable. The screen reduces the radiated interference, but increases the low frequency interference on the mains.

With regard to installation, it is generally less complicated to use unscreened cables than screened cables. For VLT

2000 an RFI and motor filter as well as a LC and RFI filter have been developed making it possible to observe the EMC emission requirements when unscreened motor cables are used. The motor filter reduces the leak current I

(see figure below). VLT 2000 frequency converters with built-in RFI filter and without motor coils fulfil the EMC emission requirements.

In order to reduce the interference level from the system overall (unit + installation) as far as possible, it is important to make motor and brake cables as short as possible. Cables with a sensitive signal level may not be led together with motor and brake cables. Radio interference higher than 50 MHz (airborne) will particularly affect the control electronics.

Electrical interference from the cable network, cableborne interference, 150 kHz-30 MHz, and airborne interference from the drive system, 30 MHz-1 GHz, is produced in particular by the inverter, the motor cable and the motor system for frequencies under approx. 50 MHz. As the sketch below shows, capacitive currents in the motor cable together with high du/dt from the motor voltage will produce interference.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Special conditions

EMC test results Emission

Subsequent test results have been obtained using a system with a VLT

frequency converter (with RFI filter module) a screened control cable and control box with potentiometer, unscreened motor cable and motor.

With the purpose of minimising the cable-conducted interference to the mains supply and the radiated interference from the frequency converter system, the motor cables should be kept as short as possible. According to experience, most installations represent only a slight risk of any interference from radiation.

Standard Port VLT 2000 type VLT 2000 type VLT 2000 type

2010-2030 208-240 V

2040-2050 208-240 V 2020-2060 380-460 V

Using RFI and motor filter for unscreened motor cable. Max.100 m, see page 88.

RFI and motor filter not available for VLT 2040-2050, 3 x 208-240 V

VLT 2040-2050, 3 x 208-240 V are not available with built-in RFI filter.

VLT 2000 up to 415 V versions are available with built-in RFI filter.

EN 55011 Enclosure yes

2, 3

yes

1, 4

gr.1 Class A 30 MHz - 1 GHz

EN 55011 Line yes

2, 3

yes

1, 4

gr.1 Class A 150 KHz - 30 MHz

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Special conditions

Acceptance criterion B B A B A - A Port connection CM DM CM CM - - DM CM Line OK OK OK - - - OK OK Motor OK - - ----OK Control lines OK - OK OK - - - OK Enclosure - - - - OK OK - -

IEC 1000-4-4 (IEC 801-4):

Burst transients

Simulation of interference brought about by coupling with a contactor, relays or similiar devices.

IEC 1000-4-5 (IEC 801-5):

Surge transients

Simulation of transients brought about e.g. by lightning that strikes near installations.

ENV 50141 (IEC 801-6):

Cable conducted HF

Simulation of the effect of radio transmission equipment coupled to connection cables.

VDE 0160 class W2 testpulse (draft Oct./1990 yellow):

Mains transients

Simulation of high-energy transients brought about by main fuse breakage, coupling with phase compensation batteries etc.

Immunity

In order to document immunity towards interference from electrical phenomena that are coupled in, the following immunity test has been made on a system consisting of a VLT

frequency converter (with RFI fil-

ter module),

VLT 2010-2030 1/3x208-240 V, VLT 2040-2050 , 3x208-240 V, VLT

2020-2060 380-460 V

Basic specification:

Basis standard

RF common

mode voltage

ENV 50141

Mains dis-

tortion

VDE 0160

Radiated elec-

tromagn. field IEC 1000-4-3

ESD

IEC 1000-4-2

Mains freq.

test

SEN 361503

Surge

IEC 1000-4-5

Burst

IEC 1000-4-4

Line 2kV/5kHz/DCN 1kV/2ohm 2kV/12ohm - - - **2,3 x Û

10V rms Motor 2kV/5kHz/CCC - - - - - - 10V rms Control lines 2kV/5kHz/CCC - 250V/50Hz - - - 10V rms Enclosure - - - 10V/m - -

2kV/

2ohm*

8 kV AD

6 kV CD

Acceptance criteria according to: IEC 22G/31/FDIS, EN 50082-2, 175R0740

AD: Air Discharge CD: Contact Discharge * Injection on cable shield ** 2,3 x Û

: max. testpulse 1250 V

PEAK

a screened control cable and control box with potentiometer, motor cable and motor. Fault criteria and test were in accordance with EN 50082-2 and IEC 22G/31/FDIS.

The tests were made using the following standards:

IEC 1000-4-2 (IEC 801-2/1991):

Electrostatic discharges (ESD)

Simulation of electrostatic discharges from human beings.

IEC 1000-4-3 (IEC 801-3):

Incoming electromagenetic field radiation

Simulation of the effects of radar and radio communication equipment as well as mobile communication equipment.

SEN 361503

Mains disturbance

Simulation of conducted capacitive interference between control cables and adjacent mains cable.

DM: Differential mode CM: Common mode CCC: Capacitive clamp coupling DCN: Direct coupling network

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Acoustic noise

The acoustic noise from the frequency converter is generated from 3 sources:

1. The motor coils (if mounted) generate a 4.5 kHz

noise, which is dependent on the cable impedance.

2. The DC coils (if mounted) generate a 100 Hz

noise (300 Hz, three-phase), which is proportional with the motor load.

3. The noise from the built-in fan (not integrated in all units) is acceptable to the human ear, although the measurements show the highest values for fan noise.

The values below (sound pressure) have been measured in accordance with VDE 0160.4.2 standard at a distance of 1 metre from the VLT frequency converter at 100% load and rated speed.

Motor noise

The motor noise depends mainly on the motor, but as a guideline the noise increases by about 10 dB (A) in relation to direct mains operation.

Extreme running conditions

Short circuit

VLT 2000 Series is protected against short circuits. A short circuit between two output phases will cause overcurrent in the inverter. However, each switch of the inverter will be turned off individually when the short circuit current exceeds the permitted value.

Ground fault

In case of an ground fault in a motor phase, the inverter is turned off within 5-10 ms.

Switching on the output (only using motor chokes)

Switching on the output between the motor and the frequency converter is fully permitted. It is not possible to damage the VLT frequency converter in any way by switching on the output, although it may result in some occasional tripping conditions.

Motor-generated overvoltage

The voltage on the intermediate circuit will be increased when the motor acts as a generator. This takes place in two cases:

1. The load runs the motor (at constant output frequency from the frequency converer), i.e. energy is supplied from the load.

2. During deceleration ("ramp-down"), if the moment of inertia is high, the load is low and/or the ramp-down time is short.

The control unit attempts to correct the ramp if possible. The inverter turns off to protect the transistors and the intermediate capactors, when a certain voltage level is reached.

Mains drop-out

During a mains drop-out the VLT frequency converter will continue to operate until the intermediate circuit voltage drops below the minimum stop level, typically 85% of the VLT frequency converter’s rated mains supply voltage. The time before inverter stop depends on mains voltage before drop-out and the motor load. Ride-through can be programmed.

Static overload

When the VLT frequency converter is overloaded (the current limit I

LIM i

is reached) the control unit will reduce the output frequency fM in an attempt to reduce the load. If the reduction of the output frequency does not reduce the load, the control unit finally trips when the output frequency has dropped below 1 Hz.

Running at current limit is limited (0-60 sec).

Special conditions

If a higher switching frequency is chosen the noise from the motor will decrease. How much will depend on the motor resonance and the type of motor.

VLT type 2010 2015 2020 *) 2030 *) 2040*) 2050*) 2020 2025 2030 2040 *) 2050 *) 2060 *) IP 20 dB (A) 30.1 30.1 50.7 50.7 50.7 50.7 30.1 30.1 30.1 50.7 50.7 50.7

*) with built-in fan.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Air humidity

The VLT frequency converter has been designed to meet VDE 0160, 5.2.1.2. Light dew is tolerated on internal insulating surfaces, but not during operation.

Efficiency

To reduce energy consumption it is very important to optimise the efficiency of a system. The efficiency of each single element in the system should be as high as possible.

Efficiency of the VLT 2000 Series (

VLT

)

The load on the frequency converter has little effect on its efficiency. In general the efficiency at rated motor frequency f

M,N

is the same whether the motor supplies a 100% rated shaft torque or only 75%. The variable switching frequency affects the losses in the VLT 2000 Series. The efficiency will drop a little when the switching frequency is set to a value higher than 4.5 kHz.

Motor efficiency (

MOTOR

)

The efficiency of a motor connected to the frequency converter depends on the sine shape of the current. In general efficiency is just as good as at mains operation. The motor efficiency depends on the make of the motor. Normally the motor efficiency drops when the load is lower than the rated torque. In the range 75-100% of rated torque the efficiency of the motor will be almost constant both when operated by the frequency converter and when running directly on the mains. In general the internal switching frequency does not affect the efficiency of small motors.

System efficiency (

SYSTEM

)

To calculate the system efficiency you can multiply the efficiency of the units of the VLT 2000 Series (η

VLT

) by

the efficiency of the motor (η

MOTOR

) using the below

formula:

SYSTEM = ηVLT x ηMOTOR

Special conditions

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

du/dt measurements

When a transistor in the inverter is activated, the voltage applied to the motor will rise by a flank. The du/dt ratio on the flank is determined by

− Motor cable (type, cross section, length)

− Inductance

The self-inductance will cause an overshoot U

PEAK

in the motor voltage before it stabilises at a level determined by the voltage in the intermediate circuit. Both the du/dt ratio and the U

PEAK

peak voltage affect the lifetime of the motor. Too high values will primarily affect motors without phase coil insulation.

With short (a few metres) motor cable, the du/dt ratio will be high but the peak voltage low. With long (100 metres) motor cable, the du/dt ratio will decrease and the U

PEAK

peak voltage will increase. If you use very small motors without phase coil insulation we recommend to mount an LC filter in series with the motor.

Typical values for the du/dt ratio and the U

PEAK

peak voltage measured between two phases (5 m and 275 m screened motor cable)

are listed below:

PEAK

[V]

Cable length 5 m 275 m VLT 2030 464 V 744 V VLT 2030 with motor coil IP 20 516 V 744 V VLT 2030 with motor coil IP 00 440 V 628 V

du/dt [V/

µµ

µs]

Cable length 5 m 275 m VLT 2030 3727 V/µs 253 V/µs VLT 2030 with motor coil IP 20 690 V/µs 157 V/µs VLT 2030 with motor coil IP 00 359 V/µs 93 V/µs

Derating for high ambient temperature

The ambient temperature is the maximum temperature allowed. The average over 24 hours must be at least 5 °C lower according to VDE 0160 5.2.1.1.

The derating for VLT 2010-2060

40 °C: 100% output, 45 °C: 84% output, 50 °C: 67% output, 55 °C: 50% output

If the VLT frequency converter is operated at temperatures above 40 °C, then a derating of the output current is necessary. At higher temperatures, derating will not be possible due to the load-independent temperature on the SMPS transistors.

Special conditions

Note: The above measurements are for VLT 2030, 1/3 x 208-240 V installed on single-phased mains

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Derating for air pressure

Below 1,000 metres altitude no derating is necessary.

Above 1,000 metres the T

amb

or maximum output

power must be derated according to the figure below.

1. Derating of output current versus altitude at T

amb

40 °C.

2. Derating of max. T

amb

versus altitude at 100% output current.

Derating for running at low speed

No derating is necessary when running the motor at rated speed, or when controlling a fan or centrifugal pump.

Motors running at constant load torque (CT) used at low speed must be derated or fan-cooled (see diagram).

Typical motor derating

Therefore the VLT frequency converter automatically reduces the maximum continous output current I

VLT,N

when the switching frequency exceeds 4.5 kHz. The reduction is done linearly to 60% at 16 kHz (see diagram). The maximum permitted motor cable length is 40 m of screened cable.

Derating for higher switching frequency

Derating for air pressure

Special conditions

4.5 16

100%

60%

20%

➤➤

➤

➤➤

➤

VLT

[kHz]

Derating for higher switching frequency than 4.5 kHz

A higher switching frequency means higher losses and increased heat generation in the transistors and motor coils of the frequency converter.

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

1 x 220/230/240 V

3 x 208/220/230/240 V l

PEAK

I² xt

VLT 2010

32 A 4.1 A² s

VLT 2015

80 A 15.2 A² s

VLT 2020

80 A 26 A² s

VLT 2030

160 A 36 A² s

VLT 2040

16 A 4 A² s

VLT 2050

16 A 4 A² s

Special conditions

■

Cut-in current

On cutting in the VLT frequency converter to the mains a cut-in current surge occurs. The cut-in current is limited by an NTC resistor. The size of this current surge depends on the mains impedance and the NTC resistor’s cooling time since the last cut-in. The current surge can be doubled if the VLT frequency converter is still warm. The cooling time is 100-200 seconds.

Maximum cut-in current surge measured at 25°C:

3 x 308-460 V l

PEAK

I² xt VLT 2020 28.8 A 0.11 A² s VLT 2025 28.8 A 0.11 A² s VLT 2030 94.4 A 14.4 A² s VLT 2040 94.4 A 14.4 A² s VLT 2050 136 A 25.4 A² s VLT 2060 136 A 25.4 A² s

) Single phase installation

) Three phase installation

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Chapter 9 ■ Troubleshooting ......................................... Page 98

■ Your parameter settings .......................... Page 102

■ Factory settings ....................................... Page 105

Factory settings and service

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Factory settings and service

Troubleshooting

The fault location procedure is described on the following pages. A total of 5 symptoms are described in the flow charts. Should you need any further guidance you are always welcome to contact Danfoss.

Service

Danfoss wil repair the new VLT 2000 1/3 phase, 230 V and the VLT 2000 3-phase 380-460 V. The service policy is based on replacement of vital parts. Please contact your nearest distributor for further information.

■

Symptom

Motor runs unevenly

Symptom

Motor does not run

If the motor runs unevenly but no fault is indicated the cause can be incorrect setting of the VLT 2000. Set the frequency converter correctly. Note how to return to the factory setting. For factory settings, see page 105.

Is there light in the display ?

No Yes

Is the unit connected to the mains supply?

Ye s

Are fault messages displayed?

No Yes

See section on Display messages on page 82.

7, page 99

13, page 100

■

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

Section 1 Section 2 Section 3

Symptom

No message or light in display

7) Have prefuses for the

VLT frequency converter blown?

No Yes

Call Danfoss for assistance

12)

10)

Call Danfoss for assistance

Ensure that the foregoing step is ok: The fault can be caused by short-circuiting on the control signals. The 24 V supply might be shortcircuited.

11)

Is the control card overloaded? Disconnect all control signals plugs on the control card. Does the fault disappear?

No Yes

Factory settings and service

MG.20.B6.02 – VLT is a registered Danfoss trademark

VLT® 2000 Series

100

Is the motor connected correctly and are all motor phases ok?

Yes

Factory settings and service

13) Symptom

Motor stationary, info in display but no fault message displayed

Start the VLT frequency converter by pressing Start” on the keyboard.

Is the display frozen, i.e. the display cannot be changed or is undefinable?

No Yes

Check whether the following precautions have been taken!

• Have screened control cables been used?

• Are the screened cables

connected correctly?

16)15)

14)

17)

18)

The frequency converter must be set to run using local references. The parameter settings must be changed thus: parameter 003 = Local parameter 004 =Change by means of “+” and “-”.

Does the motor run?

Yes N o

Contact Danfoss.

19)

Check whether the control signals to the control card are ok.

20)

Yes

Danfoss VLT 2000, VLT 2015, VLT 2030, VLT 2010, VLT 2020 Series Manual

Specifications and Main Features

Frequently Asked Questions

User Manual