Danfoss VLT 2811, VLT 2803, VLT 2805, VLT 2807, VLT 2815 Operating Instructions Manual

VLT® 2800

MG27A202

VLT

®

2800 Operating Instructions

Operating Instructions

Contents

Quick Setup

3

General warning 3

Mechanical Installation 3

Electrical Installation, power 3

Electrical Installation, control cables 3

Programming 3

Motor start 4

Safety regulations 4

Warning against unintended start 4

Introduction to VLT 2800

5

Software version 5

High voltage warning 6

These rules concern your safety 6

Warning against unintended start 6

Control unit 7

Manual initialisation 7

Hand Auto 8

Automatic motor tuning 9

Programming

10

Operation & Display 10

Load and Motor 18

References & Limits 28

Inputs and outputs 35

Special functions 44

Enhanced Sleep Mode 53

Installation

58

Mechanical dimensions 58

Mechanical installation 62

General information about electrical installation 63

EMC-correct electrical installation 64

Electrical installation 65

Safety clamp 67

Pre-fuses 67

Mains connection 67

Motor connection 68

RFI switch 68

Direction of motor rotation 68

Parallel connection of motors 69

Motor cables 69

Motor thermal protection 70

Brake connection 70

Earth connection 70

Load sharing 71

Tightening Torque, Power Terminals 71

VLT® 2800 Series

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 1

Control of mechanical brake 71

Access to control terminals 71

Electrical installation, control cables 72

Tightening torques, control cables 73

Electrical installation, control terminals 73

Relay connection 73

VLT Software Dialog 73

Connection examples 74

All about VLT 2800

75

Display readout 77

Warnings/alarm messages 77

Warning words, extended status words and Alarmwords 81

Special conditions 82

Aggressive environments 82

Derating for high switching frequency - VLT 2800 83

Temperature-dependent switch frequency 83

Galvanic Isolation (PELV) 83

EMC emission 84

UL Standard 84

General technical data 85

Technical data, mains supply 1 x 220 - 240 V/3 x 200-240V 90

Technical data, mains supply 3 x 380 - 480 V 91

Available literature 92

Supplied with the unit 92

Index

100

VLT® 2800 Series

2 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

Quick Setup

General warning

Using this Quick Setup, you can carry out quick and
EMC-correct installation of the frequency converter in
five steps. The Operating Instructions, which are also
enclosed, give other examples of installation and de­scribe all functions in detail.

Read the safety instructions on this page
before installing the unit.

Mechanical Installation

VLT 2800 frequency converters allow side-by-side in­stallation. Because of the need for cooling, there must
be 10 cm free air passage above and below the fre­quency converter. Drill holes in accordance with the
measurements given in section Mechanical dimen-
stions. Retighten all four screws.

Fit the decoupling plate to the power cables and the
earth screw (terminal 95).

Electrical Installation, power

Please note that the power terminals can be removed.
Connect mains to the mains terminals of the frequency
converter, i.e. 91, 92, 93 and the earth connection to
terminal 95. Fit a screened/armoured cable from the
motor to the motor terminals of the frequency convert­er, i.e. U, V, W. The screen ends in a screen connector.

Electrical Installation, control cables

Remove the front cover underneath the control panel.
Place a jumper between terminals 12 and 27.

Programming

Carry out programming on the control panel. Press the
[QUICK MENU] key to enter the Quick menu. In this
menu, parameters can be selected by means of the [+]
and [-] keys. The parameter values can be changed by
pressing [CHANGE DATA]. Changes are programmed
using the [+] and [-] keys. Finish the change of a pa­rameter setting by pressing [CHANGE DATA]. A
change of parameter values is saved automatically af­ter a mains failure. If the display shows three dots at
the right, the parameter value has more than three
digits. In order to see the value, activate [CHANGE
DATA]. Press [QUICK MENU]: Set the motor param­eters that are on the nameplate of the motor:

Motor power [kW] parameter 102
Motor voltage [V] parameter 103
Motor frequency [Hz] parameter 104
Motor current [A] parameter 105
Rated motor speed parameter 106

Activate AMT:

Automatic motor tuning parameter 107

Set reference range

Min. reference, RefMIN

parameter 204

Max. reference, RefMAX parameter 205

Ramp-up time [s] parameter 207
Ramp-down time [s] parameter 208

In parameter 002 Local/remote control, the frequency
converter mode can be selected as Remote operation
[0], i.e. via the control terminals, or Local [1], i.e. via
the control unit.

VLT® 2800 Series

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 3

Quick Setup

Set the control location to Local [1].

Local/remote operation = Local [1] Par. 002

Set the motor speed by adjusting the Local refer­ence

Local reference Parameter 003

Motor start

Press [Start] to start the motor. Set the motor speed by
adjusting parameter 003 Local reference.

Check whether the direction of rotation of the motor
shaft is clockwise. If not, exchange any two phases on
the motor cable. Press [STOP/RESET] to stop the mo­tor. Press [QUICK MENU] to return to display mode.
(QUICK MENU] + [+] keys must be pressed simulta­neously to give access to all parameters.

Safety regulations

The voltage of the frequency converter
can be fatal whenever it is connected to
mains. Incorrect installation of the motor
or the frequency converter may lead to
damage to the equipment, serious per­sonal injury or death.

Consequently, the provisions of this Quick Setup, as
well as national and local rules and safety regulations,
must be complied with.

Touching the electrical parts may be fatal, even after
the equipment has been disconnected from mains:
wait at least 4 min.

1. The mains supply to the frequency converter
must be disconnected if repair work is to be
carried out.

2. The [STOP/RESET] key on the control panel
of the frequency converter does not discon­nect the mains supply and is thus not to be
used as a safety switch.

3. Correct protective earthing of the unit must
be established, the user must be protected
against supply voltage, and the motor must
be protected against overload in accordance
with applicable national and local regulations.

4. The earth leakage current is higher than 3.5
mA.

5. Protection against motor overload is not in­cluded in the factory setting. If this function is
required, set parameter 128 Motor thermal

protection to data value ETR Trip or ETR
Warning.

6. Check that the mains supply has been dis­connected before removing the motor and
mains plugs.

Warning against unintended start

The motor can be brought to a stop by
means of digital commands, bus com­mands, references or local stop, while the
frequency converter is connected to
mains. If personal safety considerations
make it necessary to ensure that no unin­tended start occurs, these stops are not
sufficient.
While parameters are being programmed,
the motor may start. Consequently, the
stop key [STOP/RESET] must always be
activated, following which data can be
modified.
A motor that has been stopped may start
if faults occur in the electronics of the fre­quency converter, or if a temporary over­load, a fault in the supply mains or a fault
in the motor connection ceases.

NB!

Indicates something to be noted by the
reader.

Indicates a general warning.

Indicates a high-voltage warning.

VLT® 2800 Series

4 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

VLT 2800
Operating Instructions
Software version: 3.1x

This Design Guide can be used for all VLT 2800 Series frequency converters with software version 3.1x.
The software version number can be seen from parameter 640.

Warning
It can be extremely dangerous to touch the electrical parts even when the mains supply has been disconnected.
Also ensure that other voltage inputs are disconnected from load sharing through the DC bus.
Wait at least 4 minutes after the input power has been removed before servicing the drive.

VLT® 2800 Series

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 5

Introduction to VLT 2800

High voltage warning

The voltage of the frequency converter is
dangerous whenever the converter is con­nected to mains. Incorrect fitting of the
motor or frequency converter may cause
damage to the equipment, serious injury
or death. Consequently, it is essential to
comply with the instructions in this manual
as well as local and national rules and
safety regulations.

The Protective Extra Low Voltage (PELV)
requirements stated in IEC 61800-5-1 are
not fulfilled at altitudes above 2000 m
(6562 ft.). For 200V frequency converters
the requirements are not fulfilled at alti­tudes above 5000 m (16 404 ft.). Please
contact Danfoss Drives for further infor­mation.

These rules concern your safety

1. The frequency converter must be disconnec­ted from the mains if repair work is to be
carried out. Check that the mains supply has
been disconnected and that the prescribed
time has passed before removing motor and
mains plugs.

2. The [STOP/RESET] key on the control panel
of the frequency converter

does not discon­nect the equipment from mains and is thus
not to be used as a safety switch.

3. The unit must be properly connected to the
earth, the user must be protected against the
supply voltage and the motor must be pro­tected against overloading pursuant to pre­vailing national and local regulations.

4. The earth leakage currents are higher than

3.5 mA.

5. Protection against motor overload is not in­cluded in the factory setting. If this function is
required, set parameter 128 Motor thermal

protection to data value ETR trip or data value
ETR warning. For the North American market:

The ETR functions provide overload protec­tion of the motor, class 20, in accordance with
NEC.

6. Do

not remove the plugs for the motor - and

mains supply while the frequency converter

is connected to mains. Check that the mains
supply has been disconnected and that the
prescribed time has passed before removing
motor and mains plugs.

7. Note that the frequency converter has more
voltage inputs than L1, L2 and L3 when the
DC bus terminals are used. Check that all
voltage inputs are disconnected and that the
prescribed time has passed before repair
work is commenced.

Warning against unintended start

1. The motor can be brought to a stop by means
of digital commands, bus commands, refer­ences or a local stop, while the frequency
converter is connected to mains. If personal
safety considerations make it necessary to
ensure that no unintended start occurs,

these

stop functions are not sufficient.

2. While parameters are being changed, the
motor may start. Consequently,

the stop key
[STOP/RESET] must always be activated,
following which data can be modified.

3. A motor that has been stopped may start if
faults occur in the electronics of the frequen­cy converter, or if a temporary overload or a
fault in the supply mains or the motor con­nection ceases.

Use on isolated mains

See section RFI Switch regarding use on isolated
mains.

It is important to follow the recommendations regard­ing installation on IT-mains, since sufficient protection
of the complete installation must be observed. Not tak­ing care using relevant monitoring devices for IT­mains may result in damage.

VLT® 2800 Series

6 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

Control unit

On the front of the frequency converter there is a con­trol panel.

The control panel is divided into four function groups:

1. Six-digit LED display.

2. Keys for changing parameters and shifting
display function.

3. Indicator lamps.

4. Keys for local operation.

All displays of data are in the form of a six-digit LED
display capable of showing one item of operating data
continuously during normal operation. As a supple­ment to the display, there are three indicator lamps for
indication of mains connection (ON), warning (WARN­ING) and alarm (ALARM). Most of the frequency con­verter's parameter Setups can be changed immedi­ately via the control panel, unless this function has
been programmed as Locked [1] via parameter 018
Lock for data changes.

Control keys

[QUICK MENU] allows access to the parameters used

for the Quick menu.
The[QUICK MENU] key is also used if a change to a
parameter value is not to be implemented.
See also [QUICK MENU] + [+].

[CHANGE DATA] is used for changing a setting.
The [CHANGE DATA] key is also used for confirming
a change of parameter settings.

[+] / [-] are used for selecting parameters and for
changing parameter values.
These keys are also used in Display mode for selecting
the display of an operating value.

The [QUICK MENU] + [+] keys must be pressed at the
same time to give access to all parameters. See Menu

mode.

[STOP/RESET] is used for stopping the connected
motor or for resetting the frequency converter after a
trip.
Can be selected as Active [1] or Not active [0] via pa­rameter 014 Local stop/reset. In Display mode, the
display will flash if the stop function is activated.

NB!

If the [STOP/RESET] key is set at Not ac­tive [0] in parameter 014 Local stop/re­set,and there is no stop command via the

digital inputs or serial communication, the
motor can only be stopped by disconnect­ing the mains voltage to the frequency
converter.

[START] is used for starting the frequency converter.
It is always active, but the [START] key cannot over­ride a stop command.

Manual initialisation

Disconnect mains voltage. Hold the [QUICK MENU] +
[+] + [CHANGE DATA] keys down while simultane­ously reconnecting the mains voltage. Release the
keys; the frequency converter has now been program­med for the factory setting.

VLT® 2800 Series

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 7

Introduction to VLT 2800

Display readout states

Display mode

In normal operation, one item of operating data can be
displayed continuously at the operator's own choice.
By means of the [+/-] keys the following options can be
selected in Display mode:

-

Output frequency [Hz]

-

Output current [A]

-

Output voltage [V]

-

Intermediate circuit voltage [V]

-

Output power [kW]

-

Scaled output frequency f

out

x p008

Menu mode

In order to enter the Menu mode [QUICK MENU] + [+]
must be activated at the same time.
In Menu mode, most of the frequency converter pa­rameters can be changed. Scroll through the param­eters using the [+/-] keys. While scrolling in the Menu
mode proceeds, the parameter number will flash.

The display shows that the setting in parameter 102

Motor power P

M,N

is 0.75. In order to change the value

of 0.75, [CHANGE DATA] must first be activated; the
parameter value can then be changed using the [+/-]
keys.

If for a given parameter the display shows three dots
at the right, it means that the parameter value has
more than three digits. In order to see the value, acti­vate [CHANGE DATA].

The display shows that in parameter 128 Motor thermal
protection the selection made is Thermistor trip [2].

Quick menu

Using the [QUICK MENU] key, it is possible to access
the 12 most important parameters of the frequency
converter. After programming, the frequency converter
is in most cases ready for operation. When the [QUICK
MENU] key is activated in Display mode, the Quick
menu starts. Scroll through the quick menu using the
[+/-] keys and change the data values by first pressing
[CHANGE DATA] and then changing the parameter
value with the [+/-] keys.
TheQuick menu parameters are:

•

Par. 100 Configuration

•

Par. 101 Torque characteristic

•

Par. 102 Motor power P

M,N

•

Par. 103 Motor voltage U

M,N

•

Par. 104 Motor frequency f

M,N

•

Par. 105 Motor current I

M,N

•

Par. 106 Rated motor speed n

M,N

•

Par. 107 Automatic motor adaptation

•

Par. 202 Output frequency high limit f

MAX

•

Par. 203 Reference range

•

Par. 204 Minimum reference Ref

MIN

•

Par. 205 Maximum reference Ref

MAX

•

Par. 207 Ramp-up time

•

Par. 208 Ramp-down time

•

Par. 002 Local/remote operation

•

Par. 003 Local reference

Parameter 102 - 106 can be read out from the motor's
nameplate.

Hand Auto

During normal operation the frequency converter is in
Auto mode, where the reference signal is given exter­nally, analog or digital via the control terminals. How­ever, in Hand mode, it is possible to give the reference
signal locally via the control panel.

On the control terminals, the following control signals
will remain active when Hand mode is activated:

• Hand Start (LCP2)

• Off Stop (LCP2)

• Auto Start (LCP2)

VLT® 2800 Series

8 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

• Reset

• Coasting Stop Inverse

• Reset and Coasting Stop Inverse

• Quick Stop Inverse

• Stop Inverse

• Reversing

• DC Braking Inverse

• Setup Select LSB

• Setup Select MSB

• Thermistor

• Precise Stop Inverse

• Precise Stop/Start

•Jog

• Stop Command Via Serial Comm.

Switching between Auto- and Hand mode:

By activating the [Change Data] key in [Display Mode],
the display will indicate the mode of the frequency
converter.

Scroll up/down in order to switch to Hand mode:

When the frequency converter is in Hand mode the
readout will be like:

and the reference can be changed by using the fol­lowing keys:

NB!

Please note, that parameter 020 may
block the choice of mode.

Automatic motor tuning

Automatic motor tuning (AMT) is performed as follows:

1.

In parameter 107 Automatic motor tuning se­lect data value [2]. “107” will now flash, and
“2” will not flash.

2. AMT is activated by pressing start. “107” will
now flash and dashes will move from left to
right in the data value field.

3. When “107” appears once more with the data
value [0], AMT is complete. Press [STOP/
RESET] to save the motor data.

4. “107” will then continue to flash with the data
value [0]. You can now proceed.

NB!

VLT 2880-2882 do not have AMT func­tion.

VLT® 2800 Series

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 9

Introduction to VLT 2800

Operation & Display

001 Language

(language)

Value:

English (english) [0]

German (deutsch) [1]

French (francais) [2]

Danish (dansk) [3]

Spanish (espanol) [4]

Italian (italiano) [5]

Function:

This parameter is used to choose the language to be
shown in the display whenever the LCP control unit is
connected.

Description of choice:

There is a choice of the languages shown. The factory
setting may vary.

002 Local/remote operation

(OPERATION SITE)

Value:

Remote operation (REMOTE) [0]

Local operation (LOCAL) [1]

Function:

There is a choice of two different modes of operation
of the frequency converter; Remote operation [0] or

Local operation [1]. See also parameter 013 Local con­trol if Local operation [1] is selected.

Description of choice:

If Remote operation [0] is selected, the frequency con­verter is controlled via:

1. the control terminals or via serial communi­cation.

2. the [START] key. This cannot, however,
override stop commands transmitted via the
digital inputs or via serial communication.

3. the [STOP/RESET] and [JOG] keys, on the
condition that these are active.

If Local operation [1], is selected, the frequency con­verter is controlled via:

1. the [START] key. This cannot, however,
override stop commands via the digital inputs
(see parameter 013 Local control).

2. the [STOP/RESET] and [JOG] keys, on the
condition that these are active.

3. the [FWD/REV] key, on the condition that is
has been selected as active in parameter 016

Local reversing, and that parameter 013 Local
control is set at Local control and open loop

[1] or Local control as parameter 100 [3]. Pa­rameter 200 Output frequency range is set
at Both directions.

4.

parameter 003 Local reference where the ref­erence can be set using the [+] and [-] keys.

5. an external control command that can be
connected to the digital inputs (see parame­ter 013 Local control).

NB!

The [JOG] and [FWD/REV] keys are lo­cated on the LCP control unit.

003 Local reference

(LOCAL REFERENCE)

Value:

Par. 013 Local control must be set to [1]
or [2]:
0 - f

MAX

(par. 205)

50 Hz

Par. 013 Local control must be set to [3] or
[4].
Ref

MIN

- Ref

MAX

(par. 204-205)

0,0

Function:

In this parameter, the local reference can be set man­ually. The unit of the local reference depends on the
configuration selected in parameter 100 Configura-
tion.

Description of choice:

In order to protect the local reference, parameter 002

Local/remote operation must be set to Local opera­tion [1]. Local reference cannot be set via serial com-

munication.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

10 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

004 Active Setup

(active Setup)

Value:

Factory Setup (FACTORY SETUP) [0]

Setup 1 (setup 1) [1]

Setup 2 (setup 2) [2]

Setup 3 (setup 3) [3]

Setup 4 (setup 4) [4]

Multi Setup (MULTI SETUP) [5]

Function:

The active parameter Setup is selected here. All pa­rameters can be programmed in four individual pa­rameter Setups. Shifts between Setups can be made
in this parameter via a digital input or via serial com­munication.

Description of choice:

Factory Setup [0] contains the factory-set parameter
values. Setup 1-4 [1]-[4] are four individual Setups
which can be selected as required. Multi Setup [5] is
used where remote-controlled shifts between the four
Setups via a digital input or via serial communication
is required.

005 Programming Setup

(EDIT SETUP)

Value:

Factory Setup (FACTORY SETUP) [0]

Setup 1 (setup 1) [1]

Setup 2 (setup 2) [2]

Setup 3 (setup 3) [3]

Setup 4 (setup 4) [4]

Active Setup (ACTIVE SETUP) [5]

Function:

You can select which Setup you want to programme
during operation (applies both via the control panel
and the serial communication port). It is, for example,
possible to programme Setup 2 [2], while the active
Setup is set to Setup 1 [1] in parameter 004 Active
Setup .

Description of choice:

Factory Setup [0] contains the factory-set data and can
be used as a source of data if the other Setups are to
be reset to a known status. Setup 1-4 [1]-[4] are indi­vidual Setups that can be programmed freely during

operation. If Active Setup [5] is selected, the program­ming Setup will be equal to parameter 004 Active
Setup.

NB!

If data is modified or copied to the active
Setup, the modifications have an immedi­ate effect on the unit's operation.

006 Setup copying

(SETUP COPY)

Value:

No copying (NO COPY) [0]

Copy to Setup 1 from #
(COPY TO SETUP 1) [1]

Copy to Setup 2 from #
(COPY TO SETUP 2) [2]

Copy to Setup 3 from #
(COPY TO SETUP 3) [3]

Copy to Setup 4 from #
(COPY TO SETUP 4) [4]

Copy to all Setups from # (copy to all) [5]

Function:

You can copy from the selected active Setup in pa­rameter 005 Programming setup to the selected Setup
or Setups in this parameter.

NB!

Copying is only possible in Stop (motor
stopped in connection with a stop com­mand).

Description of choice:

Copying begins when the required copying function
has been selected and the [OK]/[CHANGE DATA] key
has been pushed. The display indicates when copying
is in progress.

007 LCP copy

(LCP COPY)

Value:

No copying (NO COPY) [0]

Upload all parameters (UPL. ALL PAR.) [1]

Download all parameters (DWNL. ALL PAR.) [2]

Download size-independent parameters
(DWNL.OUTPIND.PAR.) [3]

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 11

Programming

Function:

Parameter 007 LCP copy is used if you want to use the
LCP 2 control panel's integral copy function. The func­tion is used if you want to copy all parameter setups
from one frequency converter to another by moving the
LCP 2 control panel.

Description of choice:

Select Upload all parameters [1] if you want all param­eter values to be transferred to the control panel. Se­lect Download all parameters [2] if all parameter values
transferred are to be copied to the frequency converter
to which the control panel is attached. Select Down-
load size-independent par. [3] if you only want to down­loade the size-independent parameters. This is used
when downloading to a frequency converter with a dif­ferent rated power size than that from which the pa­rameter setup originates.

NB!

Upload/download can only be performed
in stop mode. Download can

only be per­formed to a frequency converter with the
same software version number, see pa­rameter 626 Database identification no.

008 Display scaling of output frequency

(FREQUENCY SCALE)

Value:

0.01 - 100.00

1.00

Function:

In this parameter, the factor is selected by which the
output frequency is to be multiplied. The value is
shown in the display, provided parameters 009-012

Display readout have been set to Output frequency x
scaling [5].

Description of choice:

Set the required scaling factor.

009 Large display readout

(DISPLAY LINE 2)

Value:

No readout (none) [0]

Resulting reference [%]
(reference [%]) [1]

Resulting reference [unit]
(reference [unit]) [2]

Feedback [unit] (feedback [unit]) [3]

Frequency [Hz] (Frequency [Hz]) [4]

Output frequency x scaling
(frequency x scale) [5]

Motor current [A] (Motor current [A]) [6]

Torque [%] (Torque [%]) [7]

Power [kW] (Power [kW]) [8]

Power [HP] (Power [HP][US]) [9]

Motor voltage [V]
(Motor voltage [V]) [11]

DC link voltage [V]
(DC link voltage [V]) [12]

Thermal load motor [%]
(Motor thermal [%]) [13]

Thermal load [%]
(FC. thermal[%]) [14]

Running hours [Hours]
(RUNNING HOURS]) [15]

Digital input [Bin]
(Digital input[bin]) [16]

Analog input 53 [V]
(analog input 53 [V]) [17]

Analog input 60 [mA]
(analog input 60 [mA]) [19]

Pulse reference [Hz]
(Pulse ref. [Hz]) [20]

External reference [%]
(external ref. [%]) [21]

Status word [Hex] (Status word [hex]) [22]

Heatsink temperature [°C]
(Heatsink temp [°C]) [25]

Alarm word [Hex] (Alarm word [hex]) [26]

Control word [Hex] (Control word [Hex]) [27]

Warning word [Hex]
(warning word [Hex]) [28]

Extended status word [Hex]
(Ext. status [hex]) [29]

Communication option card warning
(COMM OPT WARN [HEX]) [30]

Pulse count
(PULSE COUNTER) [31]

Function:

In this parameter you can select the data value that
you wish to display in the LCP 2 control unit display
line 2 when the frequency converter is switched on.
The display will also be included in the scrollbar in dis­play mode. In parameters 010-012 Display readout you

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

12 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

can select a further three data values, which are dis­played in display line 1.

Description of choice:

No readout can only be selected in parameters
010-012 Small display readout.

Resulting reference [%] gives, as a percentage, the re­sulting reference in the range from Minimum refer­ence, Ref

MIN

to Maximum reference, Ref

MAX

.

Reference [unit] gives the resulting reference with unit
Hz in Open loop. In Closed loop the reference unit is
selected in parameter 416 Process units.

Feedback [unit] gives the resulting signal value using
the unit/scaling selected in parameter 414 Minimum

feedback, FB

LOW

, 415 Maximum feedback, FB

HIGH

and

416 Process units.

Frequency [Hz] gives the output frequency of the fre-

quency converter.

Output frequency x scaling [-] equals the present output
frequency f

M

multiplied by the factor set in parameter

008 Display scaling of output frequency .

Motor current [A] gives the phase current of the motor
measured as an effective value.

Torque [%] denotes the motor's present load in relation
to the motor's rated torque.

Power [kW] gives the present power that the motor is
absorbing in kW.

Power [HP] gives the present power that the motor is
absorbing in HP.

Motor voltage[V] gives the voltage supplied to the mo­tor.

DC link voltage [V] gives the intermediate circuit voltage
of the frequency converter.

Thermal load motor [%] gives the calculated/estimated
load on the motor. 100 % is the cut-out limit.

Thermal load [%] gives the calculated/estimated ther­mal load on the frequency converter. 100 % is the cut­out limit.

Running hours [Hours] gives the number of hours that
the motor has tun since the last reset in parameter 619

Reset of running hours counter.

Digital input [Binary code] gives the signal status from

the 5 digital inputs (18, 19, 27, 29 and 33). Terminal
18 corresponds to the bit on the extreme left. `0' = no
signal, `1' = signal connected.

Analog input 53 [V] gives the voltage value of terminal

53.

Analog input 60 [mA] gives the present value of termi­nal 60.

Pulse reference [Hz] gives the reference in Hz connec­ted to terminal 33.

External reference [%] gives the sum of external refer­ences as a percentage (sum of analogue/pulse/serial
communication) in the range from Minimum reference,
Ref

MIN

to Maximum reference, Ref

MAX

.

Status word [Hex] gives one or several status condi­tions in a Hex code. See Serial communication in the

VLT 2800 Design Guide for further information.

Heatsink temp.[°C] gives the present heatsink temper-

ature of the frequency converter. The cut-out limit is
90-100°C, while cutting back in occurs at 70 ± 5°C.

Alarm word [Hex] gives one or several alarms in hex
code. See Serial communication in the VLT 2800 De-

sign Guide for further information.

Control word [Hex] gives the control word for the fre-
quency converter. See Serial communication in the
VLT 2800 Design Guide for further information.

Warning word [Hex] gives one or several warnings in
hex code. See Serial communication in the VLT 2800
Design Guide for further information.

Extended status word [Hex] gives one or several status
modes in Hex code. See Serial communication in the
VLT 2800 Design Guide for further information.

Communication option card warning [Hex] gives a

warning word if there is a fault in the communication
bus. Only active if communication options are instal­led.
If there are no communication options 0 Hex is dis­played.

Pulse count gives the number of pulses that the unit
has registered.

010 Small display line 1.1

(DISPLAY LINE 1.1)

Value:

See par. 009 Large dis­play readout

Analog input 53 [V]

[17]

Function:

In this parameter, the first of three data values can be
selected that is to be displayed in the LCP control unit
display, line 1, position 1. This is a useful function, e.g.
when setting the PID regulator, as it gives a view of
process reactions to reference changes. The display

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 13

Programming

readout is activated by pushing the [DISPLAY STA­TUS] key.

Description of choice:

See parameter 009 Large display readout.

011 Small display readout 1.2

(DISPLAY LINE 1.2)

Value:

See parameter 009 Large
display readout

Motor current [A][6]

Function:

See the functional description given under parameter
010 Small display readout.

Description of choice:

See parameter 009 Large display readout.

012 Small display readout 1.3

(DISPLAY LINE 1.3)

Value:

See parameter 009 Large
display readout

Feedback [unit] [3]

Function:

See the functional description given under parameter
010 Small display readout.

Description of choice:

See parameter 009 Large display readout.

013 Local control

(LOC CTRL/CONFIG.)

Value:

Local not active (DISABLE) [0]

Local control and open loop without slip com­pensation
(LOC CTRL/OPEN LOOP) [1]

Remote-operated control and open loop with­out slip compensation
(LOC+DIG CTRL) [2]

Local control as parameter 100
(LOC CTRL/AS P100) [3]

Remote-operated control as parameter 100
(LOC+DIG CTRL/AS P100) [4]

Function:

This is where the required function is selected if, in
parameter 002 Local/remote operation, Local opera-
tion [1] has been chosen.

Description of choice:

If Local not active [0] is selected, it is not possible to
set a reference via parameter 003 Local reference.
In order to enable a shift to Local not active [0], param­eter 002 Local/remote operation must be set to Remote

operation [0].

Local control and open loop [1] is used if the motor

speed is to be set via parameter 003 Local reference.
When this choice is made, parameter 100 Configura-

tion automatically shifts to Speed regulation, open
loop [0].

Remote-operated control and open loop [2] functions

in the same way as Local control and open loop [1];
however, the frequency converter can also be control­led via the digital inputs.

For selections [1-2] control is shifted to open loop, no
slip compensation.

Local control as parameter 100 [3] is used when the
motor speed is to be set via parameter 003 Local ref-
erence, but

without parameter 100 Configuration auto-

matically shifting to Speed regulation, open loop [0].

Remote-operated control as parameter 100 [4] works
the same way as Local control as parameter 100 [3];
however, the frequency converter can also be control­led via the digital inputs.

Shifting from Remote operation to Local operation in
parameter 002 Local/remote operation, while this pa­rameter has been set to Remote-operated control and
open loop [1]: The present motor frequency and direc­tion of rotation will be maintained. If the present direc­tion of rotation does not respond to the reversing signal
(negative reference), the reference will be set to 0.

Shifting from Local operation to Remote operation in
parameter 002 Local/remote control, while this param­eter has been set to Remote-operated control and open

loop [1]: The configuration selected in parameter 100
Configuration will be active. The shift will be smooth.

Shifting from Remote control to Local control in param­eter 002 Local/remote operation, while this parameter
has been set to Remote-operated control as parameter
100 [4]: the present reference will be maintained. If the
reference signal is negative, the local reference will be
set to 0.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

14 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

Shifting from Local operation to Remote operation in
parameter 002 Local/remote operation, while this pa­rameter has been set to Remote operation: The local
reference will be replaced by the remote-operated ref­erence signal.

014 Local stop

(LOCAL STOP)

Value:

Not active (DISABLE) [0]

Active (ENABLE) [1]

Function:

In this parameter, the local [STOP]-key can be engag­ed or disengaged on the control panel and on the LCP
control panel.

Description of choice:

If Not active [0] is selected in this parameter, the
[STOP]-key will be inactive.

NB!

If Not active [0] is selected, the motor can­not be stopped by means of the [STOP]­key.

015 Local jog

(LOCAL JOGGING)

Value:

Not active (DISABLE) [0]

Active (ENABLE) [1]

Function:

In this parameter, the jog function on the LCP control
panel can be engaged/disengaged.

Description of choice:

If Not active [0] is selected in this parameter, the [JOG]-
key will be inactive.

016 Local reversing

(LOCAL REVERSING)

Value:

Not active (DISABLE) [0]

Active (ENABLE) [1]

Function:

In this parameter you can select/deselect the reversing
function on the LCP control panel. The key can only
be used if parameter 002 Local/remote operation is set
to Local operation [1] and parameter 013 Localcon-

trol to Local control, open loop [1] or Local control as
parameter 100 [3].

Description of choice:

If Disable [0] is selected in this parameter, the [FWD/
REV] key will be disabled. See also parameter 200
Output frequency range.

017 Local reset of trip

(LOCAL RESET)

Value:

Not active (DISABLE) [0]

Active (ENABLE) [1]

Function:

In this parameter, the reset function on the control
panel can be engaged/disengaged.

Description of choice:

If Not active [0] is selected in this parameter, the reset
function will be inactive.

NB!

Select Not active [0], only if an external
reset signal has been connected via the
digital inputs.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 15

Programming

018 Lock for data changes

(DATA CHANGE LOCK)

Value:

Not locked (NOT LOCKED) [0]

Locked (LOCKED) [1]

Function:

In this parameter, it is possible to 'lock' the controls to
disable data changes via the control keys.

Description of choice:

If Locked [1] is selected, data changes in the parame­ters cannot be made; however, it will still be possible
to make data changes via serial communication. Pa­rameter 009-012 Display readout can be changed via
the control panel.

019

Operating mode at power-up, local op­eration

(POWER UP ACTION)

Value:

Auto restart, use saved reference
(AUTO RESTART) [0]

Forced stop, use saved reference
(LOCAL=STOP) [1]

Forced stop, set ref. to 0
(LOCAL=STOP, REF=0) [2]

Function:

Setting of the required operating mode when the mains
voltage is engaged. This function can only be active if
Local operation [1] has been selected in parameter
002 Local/remote operation.

Description of choice:

Auto restart, use saved ref. [0] is selected if the fre­quency converter is to start using the local reference
(set in parameter 003 Local reference) and the start/
stop state given via the control keys immediately prior
to the mains voltage being cut out.
Forced stop, use saved ref. [1] is selected if the fre­quency converter is to remain stopped when the mains
voltage is engaged, until the [START]-key is activated.
After a start command the motor speed is ramped up
to the saved reference in parameter 003 Local refer-

ence.
Forced stop, set ref. to 0 [2] is selected if the frequency

converter is to remain stopped when the mains voltage
is cut back in. Parameter 003 Local reference is to be
zeroed.

NB!

In remote operation (parameter 002 Lo­cal/remote operation) the start/stop state

at the time of mains connection will de­pend on the external control signals. If

Pulse start [8] is selected in parameter 302
Digital input, the motor will remain stopped

after mains connection.

020 Hand operation

(HAND OPERATION)

Value:

Not active (DISABLE) [0]

Active (ENABLE) [1]

Function:

In this parameter you can select whether it should be
possible or not to switch between Auto- and Hand
mode. In Auto mode the frequency converter is con­trolled by external signals whereas the frequency con­verter in Hand mode is controlled via a local reference
directly from the control unit.

Description of choice:

If Not active [0] is selected in this parameter, the Hand
mode function will be inactive. If Active [1] is selected
you can switch between Auto- and Hand mode. For
further information, see the Control Unit section.

024 Userdefined Quick Menu

(user quickmenu)

Value:

Not active (Disable) [0]

Active (Enable) [1]

Function:

In this parameter you can select the standard setup of
the Quick menu key on the control panel and the LCP
2 control panel.
Using this function, in parameter 025 Quick Menu set-
up the user can select up to 20 parameters for the
Quick Menu key.

Description of choice:

If not active [0] is selected, the standard setup of the
Quick Menu key is active.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

16 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

If Active [1] is selected, the user-defined Quick Menu
is active.

025 Quick Menu setup

(quick menu setup)

Value:

[Index 1 - 20] Value: 0 - 999

000

Function:

In this parameter you define which parameters are re­quired in the Quick Menu when parameter 024 User-
defined Quick Menu is set to Active [1].
Up to 20 parameters can be selected for the user-de­fined Quick Menu.

NB!

Please note that this parameter can only
be set using an LCP 2 control panel. See
Order form.

Description of choice:

The Quick Menu is set up as follows:

1.

Select parameter 025 Quick Menu setup and
press [CHANGE DATA].

2. Index 1 indicates the first parameter in Quick
Menu. You can scroll between the index
numbers using the [+ / -] keys. Select Index

1.

3. Using [< >] you can scroll between the three
figures. Press the [<] key once ad the last
number in the parameter number can be se­lected using the [+ / -] keys. Set Index 1 to
100 for parameter 100 Configuration.

4. Press [OK] when Index 1 has been set to 100.

5. Repeat steps 2 - 4 until all parameters re­quired have been set to the Quick Menu key.

6. Press [OK] to complete the Quick Menu set­up.

If parameter 100 Configuration is selected at Index 1,
Quick Menu will start with this parameter every time
Quick Menu is activated.

Please note that parameter 024 User-defined Quick
Menu and parameter 025 Quick Menu setup are reset
to the factory setting during initialisation.

VLT® 2800 Series

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 17

Programming

Load and Motor

100 Configuration

(Configuration)

Value:

Speed control, open loop
(SPEED OPEN LOOP) [0]

Speed control, closed loop
(SPEED CLOSED LOOP) [1]

Process control, closed loop
(PROCESS CLOSED LOOP) [3]

Function:

This parameter is used to select the configuration to
which the frequency converter is to be adapted. This
makes adaptation to a given application simple, since
the parameters not used in a given configuration are
hidden (not active).

Description of choice:

If Speed control, open loop [0] is selected, normal
speed control is obtained (without feedback signal)
with automatic load and slip compensation to ensure
a constant speed at varying loads. Compensations are
active, but may be disabled in parameter 134 Load
compensation and parameter 136 Slip compensation
as required.

If Speed control, closed loop [1] is selected, better
speed accuracy is obtained. A feedback signal must
be added, and the PID regulator must be set in pa­rameter group 400 Special functions.

If Process control, closed loop [3] is selected, the in-
ternal process regulator is activated to enable precise
control of a process in relation to a given process sig­nal. The process signal can be set to the relevant
process unit or as a percentage. A feedback signal
must be added from the process and the process reg­ulator must be set in parameter group 400 Special
functions. Process closed loop is not active if a Devi­ceNet card is mounted and Instance 20/70 or 21/71 is
chosen in parameter 904 Instance types.

101 Torque characteristic

(TORQUE CHARACT)

Value:

Constant torque
(Constant torque) [1]

Variable torque low
(torque: low) [2]

Variable torque medium
(torque: med) [3]

Variable torque high
(torque: high) [4]

Variable torque low with CT start
(VT LOW CT START) [5]

Variable torque medium with CT start
(VT MED CT START) [6]

Variable torque high with CT start
(VT HIGH CT START) [7]

Special motor mode
(Special motor mode) [8]

CT = Constant torque

Function:

This parameter enables a choice of principle for adap­tation of the U/f ratio of the frequency converter to the
torque characteristic of the load. See par. 135 U/f ratio.

Description of choice:

If Constant torque [1] is selected, a load-dependent U/
f characteristic is obtained, in which output voltage and
output frequency are increased at increasing loads in
order to maintain constant magnetization of the motor.

Select Variable torque low [2], Variable torque medium
[3] or Variable torque high [4], if the load is square (cen­trifugal pumps, fans).

Variable torque - low with CT start [5], - medium with
CT start [6] or high with CT start [7], are selected if you

need a greater breakaway torque than can be ach­ieved with the three first characteristics.

NB!

Load and slip compensation are not active
if variable torque or special motor mode
have been selected.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

18 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

Select Special motor mode [8], if a special U/f setting
is needed that is to be adapted to the present motor.
The break points are set in parameters 423-428 Volt-
age/frequency .

NB!

Please note that if a value set in the name­plate parameters 102-106 is changed,
there will be an automatic change of pa­rameter 108 Stator resistance and 109
Stator reactance.

102

Motor power P

M,N

(motor power)

Value:

0.25 - 22 kW

Depends on unit

Function:

Here you must set a power value [kW] P

M,N

, corre­sponding to the motor's rated power. The factory sets
a rated power value [kW] P

M,N

, that depends on the

type of unit.

Description of choice:

Set a value that matches the nameplate data on the
motor. Settings between one size below and one size
over the factory setting are possible.

103

Motor voltage U

M,N

(MOTOR VOLTAGE)

Value:

For 200 V units: 50 - 999 V

230 V

For 400 V units: 50 - 999 V

400 V

Function:

This is where to set the rated motor voltage U

M,N

for

either star Y or delta .

Description of choice:

Select a value that corresponds to the nameplate data
on the motor, regardless of the frequency converter's
mains voltage.

104

Motor frequency f

M,N

(MOTOR FREQUENCY)

Value:

24-1000 Hz

50 Hz

Function:

This is where to select the rated motor frequency
f

M,N

.

Description of choice:

Select a value that corresponds to the nameplate data
on the motor.

105

Motor current I

M,N

(MOTOR CURRENT)

Value:

0,01 - I

MAX

Depends on choice of motor

Function:

The nominal, rated current of the motor I

M,N

forms part
of the frequency converter calculation of features such
as torque and motor thermal protection.

Description of choice:

Set a value that corresponds to the nameplate data on
the motor. Set the motor current I

M,N

taking into ac­count whether the motor is star-connected Y or delta­connected .

106 Rated motor speed

(MOTOR NOM. SPEED)

Value:

100 - f

M,N

x 60 (max.

60000 rpm)

Depends on parame-

ter 104 Motor frequency,

f

M,N

Function:

This is where to set the value that corresponds to the
rated motor speed n

M,N

that can be seen from the

nameplate data.

Description of choice:

Select a value that corresponds to the nameplate data
on the motor.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 19

Programming

NB!

The max. value equals f

M,N

x 60. f

M,N

to be

set in parameter 104 Motor frequency,

f

M,N

.

107 Automatic motor tuning, AMT

(auto motor tun.)

Value:

Optimisation off (AMT off) [0]

Optimisation on (AMT start) [2]

Function:

NB!

AMT is not possible on VLT 2880-82.

Automatic motor tuning is an algorithm that measures
stator resistance R

S

without the motor axle turning.
This means that the motor is not delivering any torque.
AMT can be used with benefit when initialising units
where the user wishes to optimise adjustment of the
frequency converter to the motor being used. This is
used in particular when the factory setting does not
sufficiently cover the motor.

For the best possible tuning of the frequency converter
it is recommended that AMT is performed on a cold
motor. It should be noted that repeated AMT runs can
cause heating of the motor, resulting in an increase in
the stator resistance R

S

. As a rule, however, this is not

critical.

AMT is performed as follows:

Start AMT:

1. Give a STOP signal.

2.

Parameter 107 Automatic motor tuning is set
at value [2] Optimisation on.

3.

A START signal is given and parameter 107
Automatic motor tuning is reset to [0] when
AMT has been completed.

Complete AMT:
AMT is completed by giving a RESET signal. Param­eter 108 Stator resistance, Rs is updated with the
optimised value.

Interrupting AMT:
AMT can be interrupted during the optimisation pro­cedure by giving a STOP signal.

When using the AMT function the following points
should be observed:

-

For AMT to be able to define the motor pa­rameters as well as possible, the correct type
plate data for the motor connected to the fre­quency converter must be keyed into param­eters 102 to 106.

-

Alarms will appear in the display if faults arise
during tuning of the motor.

-

As a rule the AMT function will be able to
measure the R

S

values for motors that are 1-2
times larger or smaller than the frequency
converter's nominal size.

-

If you wish to interrupt automatic motor tun­ing, press the [STOP/RESET] key.

NB!

AMT may not be performed on motors
connected in parallel, nor may setup
changes be made while AMT is running.
The procedure for AMT controlled from
the SLCP:
See section entitled Control unit.

Description of choice:

Select Optimisation on [2] if you want the frequency
converter to perform automatic motor tuning.

108

Stator resistance R

S

(STATOR RESISTAN)

Value:

0.000 - X.XXX 

Depends on choice of motor

Function:

After setting of parameters 102-106 Nameplate data, a
number of adjustments of various parameters is car­ried out automatically, including stator resistance R

S

.

A manually entered R

S

must apply to a cold motor. The

shaft performance can be improved by fine-tuning R

S

and XS, see procedure below.

NB!

Parameters 108 Stator resistance R

S

and

109 Stator reactance X

S

are normally not

to be changed if nameplate data has been
set.

Description of choice:

R

S

can be set as follows:

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

20 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

1. Use the factory settings of RS which the fre­quency converter itself chooses on the basis
of the motor nameplate data.

2. The value is stated by the motor supplier.

3. The value is obtained through manual meas­urements: R

S

can be calculated by measur-

ing the resistance R

PHASE-PHASE

between two

phase terminals. Where R

PHASE-PHASE

is low­er than 1-2 Ohms (typical for motors > 5.5
kW, 400 V), a special Ohm-meter should be
used (Thomson-bridge or similar). R

S

= 0.5 x

R

PHASE-PHASE

.

4. R

S

is set automatically when AMT has been

completed. See parameter 107 Auto motor

adaption.

109

Stator reactance X

S

(STATOR REACTANCE)

Value:

0.00 - X,XX 

Depends on choice of motor

Function:

After setting of parameters 102-106 Nameplate data, a
number of adjustments of various parameters are
made automatically, including stator reactance X

S

.
The shaft performance can be improved by fine-tuning
R

S

and XS, see procedure below.

Description of choice:

X

S

can be set as follows:

1. The value is stated by the motor supplier.

2. The value is obtained through manual meas­urements X

S

is obtained by connecting a mo­tor to mains and measuring the phase-phase
voltage U

M

and the idle current  .

X

s

=

U

M

3×

I

ϕ

−

X

L

2

XL: See parameter 142.

3. Use the factory settings of X

S

which the fre­quency converter itself chooses on the basis
of the motor nameplate data.

117 Resonance damping

(resonance damping)

Value:

OFF - 100% [OFF - 100]

OFF % [OFF]

Function:

It is possible to optimise the resonance damping in CT
mode. The grade of the influence is adjusted in this
parameter.
The value may be set between 0% (OFF) and 100%.
100% corresponds to 50% reduction of U/F ratio.
Default value is OFF.

Internal settings (fixed):
The resonance filter is active from 10% of nominal
speed and above.
In this case 5Hz and above.
Speed to go from 0 to nominal flux level: 500ms
Speed to go from nominal to 0 flux level: 500ms

Description of functionality:
The filter monitors the active motor current and
changes the motor voltage according to the figure be­low. The filter reacts on levels referring to the nominal
motor current.

If the active motor current is below 10%, the motor
voltage will be decreased by the speed mentioned
above until the voltage reaches the setting for Par.

117. If the active motor current comes over 20% the
voltage will be increased by the above mentioned
speed. If the active motor current reaches 40% the
motor voltage will be increased immediately to normal
motor voltage.
The reduction in motor voltage depends on the pa­rameter 117 setting.

Description of choice:

Set the grade of Motor current [Imact] influence on the
U/F ratio between 0% (OFF) and 100%. 100% corre­sponds to 50% reduction of U/F ratio. Default value is
OFF.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 21

Programming

119 High start torque

(High start torq.)

Value:

0.0 - 0.5 sec.

0.0 sec.

Function:

To ensure a high start torque approx. 1.8 x I

INV.

can be
permitted for max. 0.5 sec. The current is, however,
limited by the frequency converter's (inverter's) safety
limit. 0 sec. corresponds to no high start torque.

Description of choice:

Set the necessary time for which a high start torque is
required.

120 Start delay

(START DELAY)

Value:

0.0 - 10.0 sec.

0.0 sec.

Function:

This parameter enables a delay of the start-up time
after the conditions for start have been fulfilled. When
the time has passed, the output frequency will start by
ramping up to the reference.

Description of choice:

Set the necessary time before commencing to accel­erate.

121 Start function

(START FUNCTION)

Value:

DC hold during start delay time
(DC HOLD/DELAY TIME) [0]

DC brake during start delay time
(DC BRAKE/DELAY TIME) [1]

Coasting during start delay time
(COAST/DELAY TIME) [2]

Start frequency/voltage clockwise
(CLOCKWISE OPERATION) [3]

Start frequency/voltage in reference direction
(VERTICAL OPERATION) [4]

Function:

This is where to choose the required mode during the
start delay time (parameter 120 Start delay time).

Description of choice:

Select DC hold during start delay time [0] to energize
the motor with a DC hold voltage during the start delay
time. Set voltage in parameter 137 DC hold voltage.

Choose DC brake during start delay time [1] to energize
the motor with a DC brake voltage during the start de­lay time. Set voltage in parameter 132 DC brake volt-
age.

Choose Coasting during start delay time [2] and the
motor will not be controlled by the frequency converter
during the start delay time (inverter turned off).

Choose Start frequency/voltage clockwise [3] to obtain
the function described in parameter 130 Start frequen-
cy and 131 Voltage at start during start delay time.
Regardless of the value assumed by the reference
signal, the output frequency equals the setting in pa­rameter 130 Start frequency and the output voltage will
correspond to the setting in parameter 131 Voltage at
start .
This functionality is typically used in hoist applications.
It is used in particular in applications in which a cone
anchor motor is applied, where the direction of rotation
is to start clockwise followed by the reference direc­tion.

Select Start frequency/voltage in reference direction [4]
to obtain the function described in parameter 130 Start
frequency and 131 Voltage at start during the start de­lay time.
The direction of rotation of the motor will always follow
in the reference direction. If the reference signal
equals zero, the output frequency will equal 0 Hz, while
the output voltage will correspond to the setting in pa­rameter 131 Voltage at start. If the reference signal is
different from zero, the output frequency will equal pa­rameter 130 Start frequency and the output voltage will
equal parameter 131 Voltage at start. This functionality
is used typically for hoist applications with counter­weight. It is used in particular for applications in which
a cone anchor motor is applied. The cone anchor mo­tor can break away using parameter 130 Start frequen-
cy and parameter 131 Voltage at start.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

22 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

122 Function at stop

(FUNCTION AT STOP)

Value:

Coasting (COAST) [0]

DC hold (DC HOLD) [1]

Function:

This is where to choose the function of the frequency
converter after the output frequency has become lower
than the value in parameter 123 The min. frequency for
activation of function at stop or after a stop command
and when the output frequency has been ramped
down to 0 Hz.

Description of choice:

Select Coasting [0] if the frequency converter is to 'let
go' of the motor (inverter turned off).

Select DC hold [1] if parameter 137 DC hold voltage is
to be activated.

123

Min. frequency for activation of func­tion at stop

(MIN.F.FUNC.STOP)

Value:

0,1 - 10 Hz

0,1 Hz

Function:

In this parameter, the output frequency is set at which
the function selected in parameter 122 Function at
stop is to be activated.

Description of choice:

Set the required output frequency.

NB!

If parameter 123 is set higher than param­eter 130, then the start delay function (pa­rameter 120 and 121) will be skipped.

NB!

If parameter 123 is set too high, and DC
hold has been chosen in parameter 122,
the output frequency will jump to the value
in parameter 123 without ramping up. This
may cause an overcurrent warning /
alarm.

126 DC brake time

(DC BRAKING TIME)

Value:

0 - 60 sec.

10 sec

Function:

In this parameter, the DC brake time is set at which
parameter 132 DC brake voltage is to be active.

Description of choice:

Set the required time.

127 DC brake cut-in frequency

(DC BRAKE CUT-IN)

Value:

0.0 (OFF) - par. 202

Output frequency high limit, f

MAX

OFF

Function:

In this parameter, the DC brake cut-in frequency is set
at which the DC brake is to be activated in connection
with a stop command.

Description of choice:

Set the required frequency.

128 Thermal motor protection

(MOT.THERM PROTEC)

Value:

No protection (NO PROTECTION) [0]

Thermistor warning
(THERMISTOR WARN) [1]

Thermistor trip (THERMISTOR TRIP) [2]

ETR warning 1 (ETR WARNING 1) [3]

ETR trip 1 (ETR TRIP 1) [4]

ETR warning 2 (ETR WARNING 2) [5]

ETR trip 2 (ETR TRIP 2) [6]

ETR warning 3 (ETR WARNING 3) [7]

ETR trip 3 (ETR TRIP 3) [8]

ETR warning 4 (ETR WARNING 4) [9]

ETR trip 4 (ETR TRIP 4) [10]

Function:

The frequency converter can monitor the motor tem­perature in two different ways:

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 23

Programming

-

Via a PTC thermistor that is mounted on the
motor. The thermistor is connected between
terminal 50 (+10V) and one of the digital input
terminals 18, 19, 27 or 29. See parameter
300 Digital inputs.

-

Thermal load calculation (ETR - Electronic
Thermal Relay), based on present load and
time. This is compared with the rated motor
current I

M,N

and rated motor frequency f

M,N

.
The calculations take into account the need
for lower loading at low speeds due to the
motor's internal ventilation being reduced.

ETR functions 1-4 do not begin to calculate the load
until you switch to the Setup in which they have been
selected. This means that you can use the ETR func­tion even when changing between two or more motors.

Description of choice:

Select No protection [0] if you do not want a warning
or trip when a motor is overloaded.
Select Thermistor warning [1] if you want a warning
when the connected thermistor becomes too hot.
Select Thermistor trip [2] if you want a trip when the
connected thermistor becomes too hot.
Select ETR warning 1-4 if you want a warning when the
motor is overloaded according to the calculations. You
can also programme the frequency converter to give a
warning signal via one of the digital outputs. Select
ETR Trip 1-4 if you want a trip when the motor is over­loaded according to the calculations.

NB!

This function cannot protect the individual
motors in the case of motors linked in par­allel.

130 Start frequency

(Start frequency)

Value:

0.0 - 10.0 Hz

0.0 Hz

Function:

The start frequency is active for the time set in param­eter 120 Start delay, after a start command. The output
frequency will 'jump' to the next preset frequency. Cer­tain motors, such as conical anchor motors, need an
extra voltage/start frequency (boost) at start to disen­gage the mechanical brake. To achieve this parame­ters 130 Start frequency and 131 Initial voltage are
used.

Description of choice:

Set the required start frequency. It is a precondition
that parameter 121 Start function, is set to Start fre-

quency/voltage clockwise [3] or Start frequency voltage
in reference direction [4] and that in parameter 120 Start
delay a time is set and a reference signal is present.

NB!

If parameter 123 is set higher than param­eter 130, the start delay function (param­eter 120 and 121) will be skipped.

131 Initial voltage

(INITIAL VOLTAGE)

Value:

0.0 - 200.0 V

0.0 V

Function:

Initial voltage is active for the time set in parameter 120
Start delay , after a start command. This parameter can

be used for example for lifting/dropping applications
(conical anchor motors).

Description of choice:

Set the required voltage necessary to cut out the me­chanical brake. It is assumed that parameter 121 Start
function, is set to Start frequency/voltage clockwise [3]
or Start frequency/voltage in reference direction [4] and
that in parameter 120 Start delay a time is set, and that
a reference signal is present.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

24 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

132 DC brake voltage

(DC BRAKE VOLTAGE)

Value:

0 - 100% of max. DC brake voltage

0%

Function:

In this parameter, the DC brake voltage is set which is
to be activated at stop when the DC brake frequency
set in parameter 127 DC brake cut-in frequency is
reached, or if DC braking inverse is active via a digital
input or via serial communication. Subsequently, the
DC brake voltage will be active for the time set in pa­rameter 126 DC brake time.

Description of choice:

To be set as a percentage value of the max. DC brake
voltage, which depends on the motor.

133 Start voltage

(START VOLTAGE)

Value:

0.00 - 100.00 V

Depends on unit

Function:

A higher start torque can be obtained by increasing the
start voltage. Small motors (< 1.0 kW) normally require
a high start voltage.

Description of choice:

The factory setting will be suitable for must applica­tions, the value may need to be increase gradually for
high torque application.

Warning: If the use of start voltage is ex­aggerated, this may lead to over-energiz­ing and overheating of the motor and the
frequency converter may cut out.

134 Load compensation

(LOAD COMPENSATIO)

Value:

0.0 - 300.0%

100.0%

Function:

In this parameter, the load characteristic is set. By in­creasing the load compensation, the motor is given an
extra voltage and frequency supplement at increasing
loads. This is used e.g. in motors/applications in which
there is a big difference between the full-load current
and idle-load current of the motor.

NB!

If this value is set too high, the frequency
converter may cut out because of over­current.

Description of choice:

If the factory setting is not adequate, load compensa­tion must be set to enable the motor to start at the given
load.

Warning: Should be set to 0% in connec­tion with synchronous and parallel-cou­pled motors and in the case of quick load
changes. Too high load compensation
may lead to instability.

135 U/f-ratio

(U/f RATIO)

Value:

0.00 - 20.00 at Hz

Depends on unit

Function:

This parameter enables a shift in the ratio between
output voltage (U) and output frequency (f) linearly, so
as to ensure correct energizing of the motor and thus
optimum dynamics, accuracy and efficiency. The U/f­ratio only affects the voltage characteristic if a selec­tion has been made of Constant torque [1] parameter
101 Torque characteristic.

Description of choice:

The U/f-ratio is only to be changed if it is not possible
to set the correct motor data in parameter 102-109.
The value programmed in the factory settings is based
on idle operation.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 25

Programming

136 Slip compensation

(SLIP COMP.)

Value:

-500 - +500% of rated slip compensation

100%

Function:

Slip compensation is calculated automatically, on the
basis of such data as the rated motor speed n

M,N

. In
this parameter, the slip compensation can be fine­tuned, thereby compensating for tolerances on the
value for n

M,N

. Slip compensation is only active if a

selection has been made of Speedregulation, open

loop [0] in parameter 100 Configuration and Constant
torque [1] in parameter 101 Torque characteristic.

Description of choice:

Key in a % value.

137 DC hold voltage

(DC HOLD VOLTAGE)

Value:

0 - 100% of max. DC hold voltage

0%

Function:

This parameter is used to keep the motor (holding tor­que) at start/stop.

Description of choice:

This parameter can only be used if a selection has
been made of DC hold in parameter 121 Start func-
tion or 122 Function at stop . To be set as a percentage
value of the max. DC hold voltage, which depends on
the choice of motor.

138 Brake cut out value

(Brake cut out)

Value:

0.5 - 132.0/1000.0 Hz

3.0 Hz

Function:

Here you can select the frequency at which the exter­nal brake is released, via the output defined in param­eter 323 Relay output 1-3 or 341 Digital output, terminal

46.

Description of choice:

Set the required frequency.

139 Brake cut in frequency

(Brake cut in)

Value:

0.5 - 132.0/1000.0 Hz

3.0 Hz

Function:

Here you can select the frequency at which the exter­nal brake is activated; this takes place via the output
defined in parameter 323 Relay output 1-3 or 341 Dig-
ital output terminal 46.

Description of choice:

Set the required frequency.

140 Current, minimum value

(CURRENT MIN VAL)

Value:

0 % - 100 % of inverter output current

0 %

Function:

This is where the user selects the minimum motor cur­rent running for the mechanical brake to be released.
Current monitoring is only active from stop until the
point when the brake is released.

Description of choice:

This is an extra safety precaution, aimed at guaran­teeing that the load is not lost during start of a lifting/
lowering operation.

142

Leakage reactance X

L

(LEAK. REACTANCE)

Value:

0.000 - XXX,XXX 

Depends on choice of mo-

tor

X

L

is sum of rotor and stator

leakage reactance.

Function:

After setting of parameters 102-106 Nameplate data, a
number of adjustments of various parameter is made
automatically, including the leakage reactance X

L

. The
shaft performance can be improved by fine-tuning the
leakage reactance X

L

.

NB!

Parameter 142 The leakage reactance X

L

is normally not to be changed if the name­plate data have been set, parameters
102-106.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

26 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

Description of choice:

X

L

can be set as follows:

1. The value is stated by the motor supplier.

2. Use the factory settings of X

L

which the fre­quency converter itself chooses on the basis
of the motor nameplate data.

143 Internal fan control

(fan control)

Value:

Automatic (automatic) [0]

Always switched on (always on) [1]

Always switched off (always off) [2]

Function:

This parameter can be set so that the internal fan is
automatically switched on and off. You can also set the
internal fan to be permanently switched on or off.

Description of choice:

If Automatic [0] is selected, the internal fan is switched
on or off depending on the ambient temperature and
the loading of the frequency converter.
If Always switched on [1] Always switched off [2] are
selected, the internal fan will be permanently switched
on or off.

NB!

If Always switched off [2] is selected in
combination with high switch frequency,
long motor cables or high output power,
the frequency converter's life span is re­duced.

144 Gain AC brake

(Gain AC brake)

Value:

1.00 - 1.50

1.30

Function:

This parameter is used to set the AC brake. Using par.
144 it is possible to adjust the size of the generator
torque that can be applied to the motor without the in­termediate circuit voltage exceeding the warning level.

Description of choice:

The value is increased if a greater possible brake tor­que is required. If 1.0 is selected, this corresponds to
the AC brake being inactive.

NB!

If the value in par. 144 is increased, the
motor current will simultaneously increase
significantly when generator loads are ap­plied. The parameter should therefore on­ly be changed if it is guaranteed during
measurement that the motor current in all
operating situations will never exceed the
maximum permitted current in the motor.
Please note: that the current

cannot be

read out from the display.

146 Reset voltage vector

(RESET VECTOR)

Value:

*Off (OFF) [0]

Reset (RESET) [1]

Function:

When the voltage vector is reset it is set to the same
starting point each time a new process commences.

Description of choice:

Select reset (1) when running unique processes each
time they arise. This will enable repetitive precision
when stopping to be improved. Select Off (0) for ex­ample for lifting/lowering operations or synchronous
motors. It is an advantage that the motor and the fre­quency converter are always synchronized.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 27

Programming

References & Limits

200 Output frequency range

(OUT FREQ. RNG/ROT)

Value:

Only clockwise, 0 - 132 Hz
(132 Hz CLOCKWISE) [0]

Both directions, 0 - 132 Hz
(132 Hz BOTH DIRECT) [1]

Anti-clockwise only, 0 - 132 Hz
(132 Hz COUNTER CLOCK) [2]

Clockwise only, 0 - 1000 Hz
(1000 Hz CLOCK WISE) [3]

Both directions, 0 - 1000 Hz
(1000 Hz BOTH DIRECT) [4]

Anti-clockwise only, 0 - 1000 Hz
(1000 Hz COUNTER CLOCK) [5]

Function:

This parameter guarantees protection against unwan­ted reversing. Furthermore, the maximum output fre­quency can be selected that is to apply regardless of
the settings of other parameters. This parameter has
no function if Process regulation, closed loop has been
selected in parameter 100 Configuration.

Description of choice:

Select the required direction of rotation as well as the
maximum output frequency. Please note that if Clock-
wise only [0]/[3] or Anti-clockwise only [2]/[5] is selec­ted, the output frequency will be limited to the range
f

MIN-f MAX

. If Both directions [1]/[4] is selected, the out-

put frequency will be limited to the range ± f

MAX

(the

minimum frequency is of no significance).

201

Output frequency low limit, f

MIN

(MIN OUTPUT FREQ)

Value:

0.0 - f

MAX

0.0 Hz

Function:

In this parameter, a minimum motor frequency limit
can be selected that corresponds to the minimum
speed at which the motor is allowed to run. If Both di-

rections has been selected in parameter 200 Output
frequency range, the minimum frequency is of no sig-

nificance.

Description of choice:

The value chosen can range from 0.0 Hz to the fre­quency set in parameter 202 Output frequency high

limit, f

MAX

.

202

Output frequency high limit, f

MAX

(max. output freq)

Value:

f

MIN

- 132/1000 Hz (par. 200 Output fre-

quency range)

132 Hz

Function:

In this parameter, a maximum output frequency limit
can be selected that corresponds to the highest speed
at which the motor is allowed to run.

NB!

The output frequency of the frequency
converter can never assume a value high­er than 1/10 of the switching frequency
(parameter 411 Switching frequency).

Description of choice:

A value can be selected from f

MIN

to the value chosen

in parameter 200 Output frequency range.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

28 MG.27.A2.02 - VLT

®

is a registered Danfoss trademark

203 Reference range

(REFERENCE RANGE)

Value:

Min. reference - Max reference (min - max) [0]

-Max. reference - Max. reference
(-max - +max) [1]

Function:

In this parameter you select whether the reference
signal must be positive or whether it can be both pos­itive and negative. The minimum limit may be a nega­tive value, unless in parameter 100 Configuration a
selection has been made of Speed regulation, closed

loop. You should select Min ref. - Max. ref. [0], if Proc­ess regulation, closed loop [3] has been selected in
parameter 100 Configuration.

Description of choice:

Select the required range.

204

Minimum reference, Ref

MIN

(Min.reference)

Value:

Par. 100 Config. = Open loop
[0].-100,000.000 - par. 205 Ref

MAX

0.000 Hz

Par. 100 Config. = Closed

loop [1]/[3].-Par. 414 Mini­mum feedback - par. 205
Ref

MAX

0.000 rpm/par 416

Function:

Minimum reference is an expression of the minimum
possible value of the total of all references. If in pa­rameter 100 Configuration, Speed regulation, closed
loop [1] or Process regulation, closed loop [3] is selec­ted, the minimum reference is limited by parameter
414 Minimum feedback. Minimum reference is ignored
if the local reference is active.

The reference unit can be defined from the following
table:

Par. 100 Configuration

Unit
Open loop [0] Hz
Speed reg, closed loop [1] rpm
Process reg, closed loop [3] Par. 416

Description of choice:

The minimum reference is preset if the motor has to
run at a minimum speed, regardless of whether the
resulting reference is 0.

205

Maximum reference, Ref

MAX

(max.reference)

Value:

Par. 100 Config. = Open loop
[0].Par. 204 Ref

MIN

- 1000.000 Hz

50.000 Hz

Par. 100 Config. = Closed
loop [1]/[3]. Par. 204
Ref

MIN

- Par. 415 Max.

feedback

50.000 rpm/par 416

Function:

The maximum reference gives the highest value that
can be assumed by the sum of all references. If Closed
loop [1]/[3] is selected in parameter 100 Configuration
the maximum reference cannot exceed the value in
parameter 415 Maximum feedback.
Maximum reference is ignored if the local reference is
active.

The reference unit can be defined from the following
table:

Par. 100 Configuration

Unit
Open loop [0] Hz
Speed reg, closed loop [1] rpm
Process reg, closed loop [3] Par. 416

Description of choice:

Maximum reference is set, if the speed of the motor is
to be max. the set value, regardless of the whether the
resulting reference is greater than the maximum ref­erence.

206 Ramp type

(Ramp type)

Value:

Linear (Linear) [0]

Sin shaped (SIN SHAPED) [1]

Sin

2

shaped (S-SHAPED 2) [2]

Function:

You can choose between a linear, an S-shaped and
an S

2

ramp process.

Description of choice:

Select the required ramp type depending on the re­quired acceleration/deceleration process.

VLT® 2800 Series

= factory setting, () = display text, [] = value for use in communication via serial communication port

MG.27.A2.02 - VLT

®

is a registered Danfoss trademark 29

Programming