Danfoss AKD 2800 Installation guide

■ Contents

AKD 2800

Quick Setup

General warning ..................................................................................................... 3

Mechanical Installation ........................................................................................... 3

Electrical Installation, power ................................................................................... 3

Electrical Installation, control cables ....................................................................... 3

Programming ......................................................................................................... 3

Motor start ............................................................................................................. 4

AKD Lon card ........................................................................................................ 4

Safety regulations .................................................................................................. 4

Warning against unintended start ........................................................................... 5

....................................................................................................... 3

Introduction to AKD 2800 ........................................................................... 7

Order form ............................................................................................................. 7

High voltage warning ............................................................................................. 9

These rules concern your safety ............................................................................. 9

Warning against unintended start ........................................................................... 9

Control unit ............................................................................................................ 10

Manual initialisation ................................................................................................. 10

Automatic motor tuning ......................................................................................... 11

Programming .................................................................................................... 13

Operation & Display ............................................................................................... 13

Load and Motor ..................................................................................................... 20

References & Limits ............................................................................................... 27

Inputs and outputs ................................................................................................. 33

Special functions .................................................................................................... 40

Serial communication ............................................................................................. 45

Technical functions ................................................................................................ 49

Installation ......................................................................................................... 53

Mechanical dimensions .......................................................................................... 53

Mechanical installation ........................................................................................... 54

General information about electrical installation ...................................................... 55

EMC-correct electrical installation .......................................................................... 56

Electrical installation ............................................................................................... 57

Safety clamp .......................................................................................................... 59

Pre-fuses ................................................................................................................ 59

Mains connection ................................................................................................... 59

Motor connection ................................................................................................... 59

RFI switch .............................................................................................................. 60

Direction of motor rotation ..................................................................................... 60

Parallel connection of motors ................................................................................. 60

Motor cables .......................................................................................................... 60

Motor thermal protection ....................................................................................... 61

Earth connection .................................................................................................... 61

Load sharing .......................................................................................................... 62

Tightening Torque, Power Terminals ...................................................................... 62

Access to control terminals .................................................................................... 62

Electrical installation, control cables ....................................................................... 63

Tightening torques, control cables .......................................................................... 64

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AKD 2800

Electrical installation, control terminals ................................................................... 64

Relay connection ................................................................................................... 64

Connection examples ............................................................................................ 65

All about AKD 2800 ........................................................................................ 66

Display readout ...................................................................................................... 66

Warnings/alarm messages ..................................................................................... 66

Special conditions .................................................................................................. 70

Aggressive environments ........................................................................................ 70

Derating for high switching frequency - VLT 2800 .................................................. 70

Derating for long motor cables ............................................................................. 70

Galvanic Isolation (PELV) ........................................................................................ 71

EMC emission ........................................................................................................ 72

UL Standard .......................................................................................................... 72

General technical data ........................................................................................... 73

Technical data, mains supply 1 x 220 - 240 V/3 x 200-240 V ............................... 77

Technical data, mains supply 3 x 380 - 480 V ....................................................... 78

Factory Settings ..................................................................................................... 79

Index ...................................................................................................................... 85

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■Quick Setup

AKD 2800

■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 the next page before installing the unit.

■Mechanical Installation

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 dimensions. Retighten all four screws.

■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 programmedusingthe[+]and[-]keys. Finishthe 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

Quick

Setup

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.

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Activate AMT:

Automatic motor tuning parameter 107

Set reference range

Min. reference, Ref Max. reference, Ref

MIN

MAX

parameter 204 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

AKD 2800

operation [0], i.e. via the control terminals, or Local [1], i.e. via the control unit.

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

■AKD Lon card

Requirements:

AKD 2800 must have software version (par

624) 1.32 or higher

AKD 5000 must have software version (par

624) 1.52 or higher

The AKD Lon card is RS485 based and must connect to an RS485 Adap-Kool Lon network.

■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. [QUICKMENU]+[+]keysmustbepressed simultaneously to give access to all parameters.

The card can be ordered as build-in with the AKD5000 and comes in an external box for the AKD2800.

AKD Lon connections:

The Lon card has two connections.

A 6-pole connector (only 1-4 is used) that connects to the AKD. Connections are as follows:

AKD-Connections:

Lon card terminals 1

(Red +24V)

(White or Yellow

(Black Com)

(Green TX+, RX+)

TX-, RX-)

AKD terminals 12 69 39 or 20 68

The 3-pole connector for the Lon Communication:

Lon card terminals 1 2 3 Adap-Kool Lon A B Shield

Connect the Adap-Kool Lon network to the removable 3-postion connector. Be careful to route the network wires away from the AC power and motor wires.

Commissioning

Upon power up the lower red LED of the double LED’s,

next to the Lon connectors will initially be flashing red.

1. Set AKD address in parameter 500 in the AKD (1 to 60)

2. Wait for about 1 min until the red LED goes off. (card initialisation)

3. Press one of the service pin buttons

4. Wait for about 2 minutes (upload of parameters to gateway)

5. Perform a "Net configuration" upload in AKM and you should now find the AKD. Perform a "AKC description" upload in AKM

6. Go to menu AKC -> Controllers in AKM and you should find the AKD

■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.

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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.

AKD 2800

Quick

Setup

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AKD 2800

AKD 2803-2815 200-240 V AKD 2805-2815 380-480 V

AKD 2822 200-240 V

AKD 2840 200-240 V AKD 2855-2875 380-480 V

AKD 2822-2840 380-480 V

AKD 2880-2882 380-480 V

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AKD 2800

2800

Introduction to AKD

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AKD 2800

Operating instructions Software version: 1.4x

These operating instructions can be used for all series frequency converters with software version 1.4x. The software version number can be seen from parameter 640 Software version no.

195NA299.12

NB!:

Indicates something to

Indicates a general warning.

Indicates a high-voltage warning.

be noted by the reader.

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AKD 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.

■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 the equipment from mains and is thus n 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

does not disconnect

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

6. Do n

7. Note that the frequency converter has more voltage

■Warning against unintended start

1. The motor can be brought to a stop by

2. While parameters are being changed, the

3. A motor that has been stopped may start if faults

ot 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.

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.

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, stop functions are not sufficient.

motor may start. Consequently, t [STOP/RESET] must always be activated, following which data can be modified.

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.

he stop key

these

2800

Introduction to AKD

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.

195NA139.10

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AKD 2800

■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.

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.

■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.

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■Display readout states

Display mode

In normal operation, one item of operating data can

be displayed continuously at the operator’sown

choice. By means of the [+/-] keys the following options can be selected in Display mode:

-Outputfrequency[Hz]

- Output current [A]

-Outputvoltage[V]

- Intermediate circuit voltage [V]

-Outputpower[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

is 0.75. In order to change

M,N

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

AKD 2800

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. The Quick menu parameters are:

• Par. 100 Configuration

• Par. 101 Torque characteristic

• Par. 102 Motor power P

• Par. 103 Motor voltage U

• Par. 104 Motor frequency f

• Par. 105 Motor current I

• Par. 106 Rated motor speed n

• Par. 107 Automatic motor adaptation

• Par. 202 Output frequency high limit f

• Par. 203 Reference range

• Par. 204 Minimum reference Ref

• Par. 205 Maximum reference Ref

• 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.

M,N

MAX

MIN

MAX

2800

Introduction to AKD

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].

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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.

AKD 2800

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AKD 2800

■Operation & Display

is set at Local control and open loop [1] or Local control as parameter 100 [3]. Parameter 200

001 Language

(LANGUAGE)

Value:

✭English (ENGLISH)

German (DEUTSCH) French (FRANCAIS) Danish (DANSK) Spanish (ESPANOL) Italian (ITALIANO)

[0] [1] [2] [3] [4] [5]

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.

Function:

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

003 Local reference

(LOCAL REFERENCE)

Value:

Description of choice:

There is a choice of the languages shown.

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

0-f

MAX

(par. 202)

The factory setting may vary.

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

002 Local/remote operation

Ref

MIN

-Ref

MAX

(OPERATION SITE)

Value:

✭Remote operation (REMOTE)

Local operation (LOCAL)

[0] [1]

Function:

In this parameter, the local reference can be set manually. The unit of the local reference depends on the

Function:

configuration selected in parameter 100 Configuration.

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 Loc al control if Local operation [1] is selected.

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

Description of choice:

set via serial communication.

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.

004 Active Setup

(ACTIVE SETUP)

Value:

Factory Setup (FACTORY SETUP)

✭Setup 1 (SETUP 1)

Setup 2 (SETUP 2)

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

1. the [START] key. This cannot, however, override

Setup 3 (SETUP 3) Setup 4 (SETUP 4) Multi Setup (MULTI SETUP)

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

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

✭

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.

(par. 204-205)

✭ 50 Hz

✭ 0,0

Programming

[0] [1] [2] [3] [4] [5]

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AKD 2800

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) Setup 1 (SETUP 1) Setup 2 (SETUP 2) Setup 3 (SETUP 3) Setup 4 (SETUP 4)

✭Active Setup (ACTIVE SETUP)

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 .

[0] [1] [2] [3] [4] [5]

Copy to all Setups from # (COPY TO ALL)

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)

Upload all parameters (UPL. ALL PAR.) Download all parameters (DWNL. ALL PAR.) Download size-independent parameters (DWNL.OUTPIND.PAR.)

[5]

[0] [1] [2]

[3]

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’soperation.

006 Setup copying

(SETUP COPY)

Value:

✭No copying (NO COPY)

Copy to Setup 1 from # (COPY TO SETUP 1) Copy to Setup 2 from # (COPY TO SETUP 2) Copy to Setup 3 from # (COPY TO SETUP 3) Copy to Setup 4 from # (COPY TO SETUP 4)

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

[0]

[1]

[2]

[3]

[4]

Function:

Parameter 007 LCP copy is used if yo u w a n t 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 Downloa d 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 o

performed to a frequency converter with the same software version number, see parameter 626 Database ident ification no.

nly be

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AKD 2800

008 Display scaling of output frequency

(FREQUENCY SCALE)

Value:

0.01 - 100.00

✭ 1.00

(HEATSINK TEMP [°C]) Alarm word [Hex] (ALARM WORD [HEX]) Control word [Hex] (CONTROL WORD [HEX]) Warning word [Hex] (WARNING WORD [HEX])

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].

Extended status word [Hex] (EXT. STATUS [HEX]) Communication option card warning (COMM OPT WARN [HEX]) Pulse count (PULSE COUNTER)

Description of choice:

Set the required scaling factor.

Function:

In this parameter you can select the data value that you wis h to display in th e L C P 2 control unit display

009 Large display readout

(DISPLAY LINE 2)

Value:

No readout (NONE)

[0]

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

Resulting reference [%] (REFERENCE [%]) Resulting reference [unit] (REFERENCE [UNIT]) Feedback [unit] (FEEDBACK [UNIT])

✭Frequency [Hz] (FREQUENCY [HZ])

Output frequency x scaling (FREQUENCY X SCALE) Motor current [A] (MOTOR CURRENT [A]) Torque [ %] (T ORQUE [%]) Power [kW] (POWER [KW]) Power [HP] (POWER [HP][US]) Motor voltage [V] (MOTOR VOLTAGE [V]) DC link voltage [V] (DC LINK VOLTAGE [V]) Thermal load motor [%] (MOTOR THERMAL [%])

[1]

[2] [3] [4]

[5] [6] [7] [8] [9]

[11]

[12]

[13]

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

to Maximum reference, Ref

MIN

Reference [unit] gives the resulting reference with unit Hz in Open loop.InClosed 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 FB

and 416 Process units.

HIGH

LOW

Frequency [Hz] gives the output frequency of

the frequency converter.

Thermal load [%] (FC. THERMAL[%]) Running hours [Hours] (RUNNING HOURS])

[14]

[15]

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

multiplied by the factor set in

parameter 008 Display scaling of output frequency .

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. [%]) Status word [Hex] (STATUS WORD [HEX])

[21]

[22] Heatsink temperature [°C]

✭

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

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.

[25] [26] [27]

[28]

[29]

[30]

[31]

MAX

, 415 Maximum feedback,

Programming

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AKD 2800

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 cut-out 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 c ounter.

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’ =nosignal,‘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 Maximum reference, Ref

MAX

MIN

Status word [Hex] gives one or several status conditions in a Hex code. See Serial communication in the Design Guide for further information.

Heatsink temp.[°C] gives the present heatsink temperature of the frequency converter. The cut-out limit is 90-100°C, while cutting back in occurs at 70 ± 5°C.

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 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.

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

Description of choice:

See parameter 009 Large display readout.

Design Guide for further information.

Control word [Hex] gives the control word for the

frequency converter. See Serial communication in the Design Guide for further information.

Warning word [Hex] gives one or several warnings in hex code. See Serial communication in the

012 Small display readout 1.3

(DISPLAY LINE 1.3)

Value:

See parameter 009 Large display readout

Design Guide for further information.

Extended status word [Hex] gives one or several status

modes in Hex code. See Se rial communication in the Design Guide for further information.

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

✭

Function:

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

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✭ Feedback [unit] [3]

AKD 2800

Description of choice:

See parameter 009 Large display readout.

013 Local control

(LOC CTRL/CONFIG.)

Value:

Local not active (DISABLE) Local control and open loop without slip

compensation

(LOC CTRL/OPEN LOOP) Remote-operated control and open loop

without slip compensation

(LOC+DIG CTRL) Local control as parameter 100 (LOC CTRL/AS P100)

✭Remote-operated control as parameter 100

(LOC+DIG CTRL/AS P100)

Function:

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

[0]

[1]

[2]

[3]

[4]

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.

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.

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 operat ion 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 Configuration 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.

Local control as parameter 100 [3] is used when the motor speed is to be set via parameter 003 Local reference,butw

Configuration automatically 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,whilethis parameter has been set to Remote-operated control

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

✭

ithout parameter 100

014 Local stop

(LOCAL STOP)

Value:

Not active (DISABLE)

✭Active (ENABLE)

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]-keywillbeinactive.

NB!:

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

017 Local reset of trip

(LOCAL RESET)

Value:

Not active (DISABLE)

✭Active (ENABLE)

Function:

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

[0] [1]

Programming

[0] [1]

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AKD 2800

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.

018 Lock for data changes

(DATA CHANGE LOCK)

Value:

✭Not locked (NOT LOCKED)

Locked (LOCKED)

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) Forced stop, use saved reference (LOCAL=STOP) Forced stop, set ref. to 0 (LOCAL=STOP, REF=0)

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)andthe 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

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

✭

[0] [1]

[0]

[1]

[2]

speed is ramped up to the saved reference in parameter 003 Local reference. 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 t o be ze r o e d .

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,themotor will remain stopped after mains connection.

024 Userdefined Quick Menu

(USER QUICKMENU)

Value:

✭Not active (DISABLE)

Active (ENABLE)

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 setup the user can select up to 20 parameters for the Quick Menu key.

Description of choice:

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

Function:

In this parameter you define which parameters are required in the Quick Menu when parameter 024 User-defined Quick Menu is se t 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.

[0] [1]

✭ 000

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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.

AKD 2800

Please note that parameter 024 User-defined Quick Menu and parameter 025 Quick Me nu setup are

reset to the factory setting during initialisation.

Programming

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

MG.28.H3.02 - VLT is a registered Danfoss trademark

AKD 2800

■Load and Motor

100 Configuration

(CONFIGURATION)

Value:

✭Speed control, open loop

(SPEED OPEN LOOP) Process control, closed loop (PROCESS CLOSED LOOP)

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.

[0]

[1]

Function:

This parameter enables a choice of principle for adaptation of the U/f ratio of the frequency converter tothetorquecharacteristicoftheload.

Description of choice:

If Compressor CT [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 Fan/Pump VT [2], if the load is square (centrifugal pumps, fans). High with CT start [3], 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.

Select Special motor mode [4], 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 Voltage/frequ ency .

If Process control, closed loop [3] is selected, the internal 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:

Compressor CT

✭Fan/Pump VT

Variable torque high with CT start (VTHIGHCTSTART) Special motor mode (SPECIAL MOTOR MODE)

[1] [2]

[3]

[4]

Select Constant Torque [1] for use with compressors. Select Variable torque high [2] for use with condenser fans or pumps. Use Special motor mode [4] if several fans are connected in parallel.

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 reactan

102 Motor power P

M,N

ce.

(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.

CT = Constant torque VT = Variable torque

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.

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

MG.28.H3.02 - VLT is a registered Danfoss trademark

AKD 2800

103 Motor voltage U

M,N

(MOTOR VOLTAGE)

Value:

For 200 V units: 50 - 999 V

For 400 V units: 50 - 999 V

✭ 230 V

✭ 400 V

Function:

This is where to set the rated motor voltage U

foreitherstarYordelta .

M,N

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

Description of choice:

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

M,N

106 Rated motor speed

(MOTOR NOM. SPEED)

Value:

100 - f

x 60 (max. 60000 rpm)

M,N

✭ Depends on parameter 104 Motor frequency, f

Function:

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

that can be

M,N

seen from the nameplate data.

Description of choice:

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

NB!:

The max. value equals f

M,N

set in parameter 104 Motor frequency, f

107 Automatic motor tuning, AMT

(AUTO MOTOR TUN.)

Value:

✭Optimisation off (AMT OFF)

Optimisation on (AMT START)

Function:

NB!:

AMT is not possible on AKD 2880-82.

x 60. f

M,N

to be

M,N

[0] [1]

105 Motor current I

M,N

(MOTOR C URRENT)

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:

Setavaluethatcorrespondstothenameplate data on the motor. Set the motor current

taking into account whether the motor is

M,N

star-connected Y or delta-connected

Automatic motor tuning is an algorithm that measures stator resistance R

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

.Asa

rule, however, this is not critical.

AMT is performed as follows:

tart AMT:

1. Give a STOP signal.

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

Programming

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

✭

MG.28.H3.02 - VLT is a registered Danfoss trademark

AKD 2800

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

omplete AMT:

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

nterrupting AMT:

I 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

values for motors that are 1-2 times larger or

the R

smaller than the frequency converter’snominalsize.

- 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.

he procedure for AMT controlled from the SLCP:

T See section entitled Control unit.

Description of choice:

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

NB!:

Parameters 108 Stator resistance R Stator reactance X

are normally not to be

and 109

changed if nameplate data has been set.

Description of choice:

can be set as follows:

1. Use the factory settings of R

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 theresistanceR terminals. Where R

can be calculated by measuring

PHASE-PHASE

between two phase

is lo wer th an 1-2 Ohms (typical for motors > 5.5 kW, 400 V), a special Ohm-meter should be used (Thomson-bridge or

similar). R

4. R

=0.5xR

is set automatically when AMT has

PHASE-PHASE

been completed. See parameter 107

Auto motor adaption.

109 Stator reactance X

(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

. The shaft performance can be improved by

fine-tuning R

and XS, see procedure below.

Description of choice:

can be set as follows:

108 Stator resistance R

(STATOR RESISTAN)

Value:

0.000 - X.XXX

1. The value is stated by the motor supplier.

2. The value is obtained through manual measurements X

is obtained by connecting a

motor to mains and measuring the phase-phase voltage U

and the idle current .

✭ 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

. A manually entered RSmust apply to a cold

XL: See parameter 142.

3. Use the factory settings of X frequency converter itself chooses on the basis of the motor nameplate data.

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

and XS, see procedure below.

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

MG.28.H3.02 - VLT is a registered Danfoss trademark

which the

AKD 2800

117 Resonance damping

(RESONANCE DAMPING)

Value:

OFF - 100%

✭OFF %

[OFF - 100]

[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.

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.

119 High star t 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.

123 Min. frequency for activation of

function at stop

(MIN.F.FUNC.STOP)

Value:

0.1 - 10 Hz

✭ 0.1 Hz

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.

Function:

In this parameter, the output frequency is set at which function is 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 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:

0-60sec.

✭ 10 sec

Function:

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

Programming

✭

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

MG.28.H3.02 - VLT is a registered Danfoss trademark

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

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 PROT EC )

Value:

✭No protection (NO PROTECTION)

Thermistor warning (THERMISTOR WARN) Thermistor trip (THERMISTOR TRIP) ETR warning 1 (ETR WARNING 1) ETR trip 1 (ETR TRIP 1) ETR warning 2 (ETR WARNING 2) ETR trip 2 (ETR TRIP 2) ETR warning 3 (ETR WARNING 3) ETR trip 3 (ETR TRIP 3) ETR warning 4 (ETR WARNING 4) ETR trip 4 (ETR TRIP 4)

✭ OFF

[0]

[1] [2] [3] [4] [5] [6] [7] [8] [9]

[10]

AKD 2800

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 wa rning 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.

Function:

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

130 Start frequency

(START FREQUENCY)

Value:

0.0 - 10.0 Hz

- 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

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

Function:

Thestartfrequencyisactiveforthetimesetin 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.

internal ventilation being reduced.

Description of choice:

Set the required start frequency. It is a precondition that parameter 121 Start funct

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

✭

MG.28.H3.02 - VLT is a registered Danfoss trademark

✭ 0.0 Hz

ion,issetto

AKD 2800

Start frequency/voltage clockwise [3] or Start frequency voltage in reference direction [4] and

that in parameter 120 Start delay atimeisset 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.

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 D C 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.

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 paramete r, the load characteristic is se t. 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 tostartatthegivenload.

Warning: Should be set to 0% in connection with synchronous and

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.

case of quick load changes. Too high load compensation may lead to instability.

136 Slip compensation

Value:

-500 - +500% of rated slip compensation

parallel-coupled motors and in the

(SLIP COMP.)

Function:

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

. In this parameter, the slip compensation can be

M,N

fine-tuned, thereby compensating for tolerances on the value for n

. Slip compensation is only active if

M,N

a selection has been made of Speedregulation, open

loop [0] in parameter 100 Configurat ion and Constant torque [1] in parameter 101 Torque c haracteristic.

Description of choice:

The factory setting will be suitable for must applications, the value may need to be increase

Description of choice:

Key in a % value.

gradually for high torque application.

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

Programming

✭ 100%

MG.28.H3.02 - VLT is a registered Danfoss trademark

137 DC hold voltage

(DC HOLD VOLTAGE)

Value:

0 - 100% of max. DC hold voltage

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 function 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.

✭ 0%

AKD 2800

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

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