Danfoss VLT Micro Drive FC 51 Series Operating instructions

Programming Guide
VLT®Micro Drive FC 51

Contents
1. Safety
3
Safety Instructions 3
Software Version and Approvals 3
General Warning 3
Avoid unintended Start 4
Before Commencing Repair Work 4
2. Introduction 5
Type Code 5
3. Programming 7
How to Programme 7
Programming with MCT-10 Set-up Software 7
Programming with the LCP 11 or LCP 12 7
Status Menu 9
Quick Menu 9
Main Menu 10
4. Parameter Descriptions 11
Parameter group 0: Operation/Display 11
Parameter Group 1: Load/Motor 15
Parameter Group 2: Brakes 22
Parameter Group 3: Reference/Ramps 25
Parameter Group 4: Limits/Warnings 30
Parameter Group 5: Digital In/Out 33
Parameter Group 6: Analogue In/Out 37
Parameter Group 7: Controllers 42
Parameter Group 8: Communication 44
Parameter Group 13: Smart Logic 48
Parameter Group 14: Special Functions 55
Parameter Group 15: Drive Information 57
Parameter Group 16: Data Readouts 59
16-09 Custom Readout 59
5. Parameter Lists 63
Conversion Index 67
Change during operation 67
2-Set-up 67
Type 67
0-** Operation/Display 68
1-** Load/Motor 69
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2-** Brakes 70
3-** Reference/Ramps 71
4-** Limits/Warnings 72
5-** Digital In/Out 73
6-** Analog In/Out 74
7-** Controllers 75
8-** Comm. and Options 76
13-** Smart Logic 77
14-** Special Functions 78
15-** Drive Information 79
16-** Data Readouts 80
6. Troubleshooting 81
Alarm, Warning and Extended Status Word 82
Index
83
Contents VLT
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1. Safety
1.1.1. High Voltage Warning
The voltage of the frequency converter is dangerous whenever it is connected to mains. Incorrect installation 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.
1.1.2. Safety Instructions
• Make sure the frequency converter is properly connected to earth.
• Do not remove mains connections, motor connections or other power connections while the frequency converter is connected to power.
• Protect users against supply voltage.
• Protect the motor against overloading according to national and local regulations.
• The earth leakage current exceeds 3.5 mA.
• The [OFF] key is not a safety switch. It does not disconnect the frequency converter from mains.
1.1.3. Software Version and Approvals
Software Version
Programming Guide
VLT Micro Drive
FC 51 Series
This Programming Guide can be used for all VLT Micro Drive frequency drives with software version
2.1x.
The software version number can be read in
parameter 15-43.
1.1.4. General Warning
Warning:
Touching the electrical parts may be fatal - even after the equipment has been disconnected from mains.
Also make sure that other voltage inputs have been disconnected (linkage of DC intermediate circuit).
Be aware that there may be high voltage on the DC link even when the LEDs are turned off.
Before touching any potentially live parts of the frequency converter, wait at least 4 minutes for all sizes.
Shorter time is allowed only if indicated on the nameplate for the specific unit.
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Leakage Current
The earth leakage current from the frequency converter exceeds 3.5 mA. According to IEC 61800-5-1 a reinforced Protective Earth
connection must be ensured by means of a min. 10mm² Cu or an addtional PE wire - with the same cable cross section as the Mains
wiring - must be terminated separately.
Residual Current Device
This product can cause a DC current in the protective conductor. Where a residual current device (RCD) is used for extra protection,
only an RCD of Type B (time delayed) shall be used on the supply side of this product. See also Danfoss Application Note on RCD, MN.
90.GX.YY.
Protective earthing of the frequency converter and the use of RCDs must always follow national and local regulations.
Motor overload protection is possible by setting Parameter 1-90 Motor thermal protection to the value ETR trip. For the North American
market: ETR functions provide class 20 motor overload protection, in accordance with NEC.
Installation in high altitudes:
For altitudes above 2 km, please contact Danfoss regarding PELV.
1.1.5. IT Mains
IT Mains
Installation on isolated mains source, i.e. IT mains.
Max. supply voltage allowed when connected to mains: 440 V.
As an option, Danfoss offers line filters for improved harmonics performance.
1.1.6. Avoid unintended Start
While the frequency converter is connected to mains, the motor can be started/stopped using digital commands, bus commands, references or via the
Local Control Panel.
• Disconnect the frequency converter from mains whenever personal safety considerations make it necessary to avoid unintended start of any
motors.
• To avoid unintended start, always activate the [OFF] key before changing parameters.
1.1.7. Disposal Instruction
Equipment containing electrical components must not be disposed of together with domestic waste.
It must be separately collected with electrical and electronic waste according to local and currently valid leg-
islation.
1.1.8. Before Commencing Repair Work
1. Disconnect FC 51 from mains (and external DC supply, if present.)
2. Wait for 4 minutes for discharge of the DC-link.
3. Disconnect DC bus terminals and brake terminals (if present)
4. Remove motor cable
1. Safety VLT
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2. Introduction
2.1.1. FC Identification
Below is an example of the frequency converter nameplate sticker. This sticker is located on the top of each frequency converter and shows the ratings,
serial number, warnings catalog number, and other relevant data for each unit. See following tables for details, how to read the Type code string.
Illustration 2.1: This example shows the identification sticker.
2.1.2. Type Code
Description Pos Possible choice
Product group 1-3 Adjustable Frequency Converters
Series and product type 4-6 Micro Drive
Power size 7-10 0.18 - 7.5 kW
Mains voltage 11-12 S2: Single phase 200 - 240 V AC
T 2: Three phase 200 - 240 V AC
T 4: Three phase 380 - 480 V AC
Enclosure 13-15 IP20/Chassis
RFI filter 16-17 HX: No RFI filter
H1: RFI filter class A1/B
H3:RFI filter A1/B (reduced cable length)
Brake 18 B: Brake chopper included
X: No brake chopper included
Display 19 X: No Local Control Panel
N: Numerical Local Control Panel (LCP)
P: Numerical Local Control Panel (LCP) with potentiometer
Coating PCB 20 C: Coated PCB
X. No coated PCB
Mains option 21 X: No mains option
Adaptation A 22 X: No adaptation
Adaptation B 23 X: No adaptation
Software release 24-27 SXXX: Latest release - std. software
Table 2.1: Type code description
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2.1.3. Symbols
Symbols used in this Programming Guide.
NB!
Indicates something to be noted by the reader.
Indicates a general warning.
Indicates a high-voltage warning.
* Indicates default setting
2.1.4. Abbreviations and Standards
Abbreviations: Terms: SI-units: I-P units:
Acceleration m/s2ft/s2
AWG American wire gauge
Auto Tune Automatic Motor Tuning
rC Celsius
Current AAmp
ILIM Current limit
Energy J = N·m ft-lb, Btu
rFFahrenheit
FC Frequency Converter
Frequency Hz Hz
kHz Kilohertz
LCP Local Control Panel
mA Milliampere
ms Millisecond
min Minute
MCT Motion Control Tool
M-TYPE Motor Type Dependent
Nm Newton Metres in-lbs
IM,N Nominal motor current
fM,N Nominal motor frequency
PM,N Nominal motor power
UM,N Nominal motor voltage
par. Parameter
PELV Protective Extra Low Voltage
Power WBtu/hr, hp
Pressure Pa = N/m² psi, psf, ft of water
IINV Rated Inverter Output Current
RPM Revolutions Per Minute
SR Size Related
Temperature ˚C ˚F
Time ss,hr
TLIM Torque limit
Voltage V V
Table 2.2: Abbreviation and Standards table .
2. Introduction VLT
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3. Programming
3.1. How to Programme
3.1.1. Programming with MCT-10 Set-up Software
The frequency converter can be programmed from a PC via RS485 com-port by installing the MCT-10 Set-up Software.
This software can either be ordered using code number 130B1000 or downloaded from the Danfoss Web site: www.danfoss.com, Business Area: Motion
Controls.
Please refer to manual MG.10.RX.YY.
3.1.2. Programming with the LCP 11 or LCP 12
The LCP is divided into four functional groups:
1. Numeric display.
2. Menu key.
3. Navigation keys.
4. Operation keys and indicator lights (LEDs).
Illustration 3.1: LCP 12 with potentiometer
Illustration 3.2: LCP 11 without potentiometer
The display:
A number of information can be read from the display.
Set-up number shows the active set-up and the edit set-up. If the same
set-up acts as both active and edit set-up, only that set-up number is
shown (factory setting).
When active and edit set-up differ, both numbers are shown in the display
(Setup 12). The number flashing, indicates the edit set-up.
Illustration 3.3: Indicating Set-up
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The small digits to the left are the selected parameter number.
Illustration 3.4: Indicating selected par. no.
The large digits in the middle of the display show the value of the se-
lected parameter.
Illustration 3.5: Indicating value of selected par.
The right side of the display shows the unit of the selected parameter.
This can be either Hz, A, V, kW, HP, %, s or RPM.
Illustration 3.6: Indicating unit of selected par.
Motor direction is shown to the bottom left of the display - indicated
by a small arrow pointing either clockwise or counterclockwise.
Illustration 3.7: Indicating motor direction
Use the [MENU] key to select one of the following menus:
Status Menu:
The Status Menu is either in
Readout Mode or Hand on Mode . In Readout Mode the value of the currently selected readout parameter is shown in the
display.
In
Hand on Mode the local LCP reference is displayed.
Quick Menu:
Displays Quick Menu parameters and their settings. Parameters in the Quick Menu can be accessed and edited from here. Most applications can be run
by setting the parameters in the Quick Menus.
Main Menu:
Displays Main Menu parameters and their settings. All parameters can be accessed and edited here. A parameter overview is found later in this manual.
Indicator lights:
• Green LED: The frequency converter is on.
• Yellow LED: Indicates a warning. Please see section
Troubleshooting
• Flashing red LED: Indicates an alarm. Please see section Troubleshooting
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Navigation Keys:
[Back]: For moving to the previous step or layer in the navigation structure.
Arrows [
Ⴃ
] [
Ⴍ
]: For maneuvering between parameter groups, parameters and within parameters.
[OK]: For selecting a parameter and for accepting changes to parameter settings.
Operation Keys:
A yellow light above the operation keys indicates the active key.
[Hand on]: Starts the motor and enables control of the frequency converter via the LCP.
[Off/Reset]: The motor stops except in alarm mode. In that case the motor will be reset.
[Auto on]: The frequency converter is controlled either via control terminals or serial communication.
[Potentiometer] (LCP12): The potentiometer works in two ways depending on the mode in which the frequency converter is running.
In
Auto Mode the potentiometer acts as an extra programmable analog input.
In
Hand on Mode the potentiometer controls local reference.
3.2. Status Menu
After power up the Status Menu is active. Use the [MENU] key to toggle
between Status, Quick Menu and Main Menu.
Arrows [Ⴃ] and [Ⴍ] toggles between the choices in each menu.
The display indicates the status mode with a small arrow above “Status”.
Illustration 3.8: Indicating Status mode
3.3. Quick Menu
The Quick Menu gives easy access to the most frequently used parameters.
1. To enter the Quick Menu, press [MENU] key until indicator in display is placed above
Quick Menu .
2. Use [Ⴃ] [Ⴍ] to select either QM1 or QM2, then press [OK].
3. Use [Ⴃ] [Ⴍ] to browse through the parameters in the Quick Menu.
4. Press [OK] to select a parameter.
5. Use [Ⴃ] [Ⴍ] to change the value of a parameter setting.
6. Press [OK] to accept the change.
7. To exit, press either [Back] twice to enter
Status , or press [Menu] once to enter Main Menu .
Illustration 3.9: Indicating Quick Menu mode
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3.4. Main Menu
The Main Menu gives access to all parameters.
1. To enter the Main Menu, press [MENU] key until indicator in
display is placed above
Main Menu .
2. Use [Ⴃ] [Ⴍ] to browse through the parameter groups.
3. Press [OK] to select a parameter group.
4. Use [Ⴃ] [Ⴍ] to browse through the parameters in the specific
group.
5. Press [OK] to select the parameter.
6. Use [Ⴃ] [Ⴍ] to set/change the parameter value.
7. Press [OK] to accept the value.
8. To exit, press either [Back] twice to enter
Quick Menu , or press
[Menu] once to enter
Status .
Illustration 3.10: Indicating Main Menu mode
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4. Parameter Descriptions
4.1. Parameter group 0: Operation/Display
0-03 Regional Settings
Option: Function:
In order to meet the needs for different default settings in different parts of the world, par. 0-03, Regional
Settings
, is implemented in the frequency converter. The selected setting influences the default setting of the
motor nominal frequency.
[0 ]
*
International Sets default of par. 1-23, Motor Frequency , to 50 Hz, shows par. 1-20 in kW.
[1] US Sets default of par. 1-23,
Motor Frequency , to 60 Hz, shows par. 1-20 in HP.
NB!
This parameter cannot be adjusted while motor runs.
0-04 Operating State at Power-up (Hand Mode)
Option: Function:
This parameter controls whether or not the frequency converter should start running the motor when powering
up after a power down in Hand mode.
NB!
If LCP with potentiometer is mounted, reference is set according to actual potentiometer
value.
[0] Resume Frequency converter starts in same Hand or Off State as when powered off.
Local reference is stored and used after power-up.
[1]
*
Forced Stop, Ref=Old Frequency converter powers up in Off State meaning that motor is stopped after power up.
Local reference is stored and used after power-up.
[2] Forced Stop, Ref=0 Frequency converter powers up in Off State meaning that motor is stopped after power up.
Local reference is set to 0. Thus motor will not start running before local reference has been increased.
4.1.1. 0-1* Set-up Handling
User defined parameters and miscellaneous external inputs (eg. bus, LCP, analog/digital inputs, feedback, etc.) controls the functionality of the frequency
converter.
A complete set of all parameters controlling the frequency converter is called a set-up. The frequency converter contains 2 set-ups,
Set-up1 and Set-up
2
.
Furthermore, a fixed set of factory settings can be copied into one or more set-ups.
Some of the advantages of having more than one set-up in the frequency converter are
• Run motor in one set-up (Active Set-up) while updating parameters in another set-up (Edit Set-up)
• Connect various motors (one at a time) to frequency converter. Motor data for various motors can be placed in different set-ups.
• Rapidly change settings of frequency converter and/or motor while motor is running (eg. ramp time or preset references) via bus or digital
inputs.
The
Active Set-up can be set as Multi Set-up where the active set-up is selected via input on a digital input terminal and/or via the bus control word.
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NB!
Factory Set-up cannot be used as Active Set-up .
0-10 Active Set-up
Option: Function:
Active Set-up controls the motor.
Shifts between set-ups can only happen when
• the motor is coasted
OR
• the set-ups between which the shift happens are linked to each other (see par. 0-12,
Linked Set-
ups
).
If changing between set-ups that are not linked, the change will not happen before motor is coasted.
NB!
The motor is only considered stopped when it is coasted.
[1 ] *
Set-up 1 Set-up 1 is active.
[2] Set-up 2
Set-up 2 is active.
[9] Multi Set-up Select the active set-up via digital input and/or bus, see par. 5-1* choice [23].
0-11 Edit Set-up
Option: Function:
The Edit Set-up is for updating parameters in the frequency converter from either LCP or bus. It can be identical
or different from the
Active Set-up .
All set-ups can be edited during operation, independently of the active set-up.
[1 ]
*
Set-up 1 Update parameters in Set-up 1 .
[2] Set-up 2 Update parameters in
Set-up 2 .
[9] Active Set-up Update parameters in set-up selected as
Active Set-up (see par. 0-10).
0-12 Link Set-ups
Option: Function:
The link ensures synchronizing of the “not changeable during operation” parameter values enabling shift from
one set-up to another during operation.
If the set-ups are not linked, a change between them is not possible while the motor is running. Thus the set-
up change does not occur until the motor is coasted.
[0] Not linked Leaves parameters unchanged in both set-ups and cannot be changed while motor runs.
[1 ]
*
Linked Copy parameters “not changeable during operation” parameter values into presently selected Edit Set-up .
NB!
This parameter cannot be changed while motor runs.
4.1.2. 0-31 Custom Readout Min Scale
0-31 Custom Readout Min Scale
Range: Function:
0.00 * [0.00 – 9999.00 ] It is possible to create a customized readout related to the output frequency of the unit. The value entered in
par. 0-31 will be shown at 0 Hz. The readout can be shown in the LCP display when in Status Mode or it can be
read in par. 16-09
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4.1.3. 0-32 Custom Readout Max Scale
0-32 Custom Readout Max Scale
Range: Function:
100.0 * [0.00 – 9999.00] It is possible to create a customized readout related to the output frequency of the unit. The value entered in
par. 0-32 will be shown at the frequency programmed in par. 4-14 Motor Speed High Limit. The readout can be
shown in the LCP display when in Status Mode or it can be read in par. 16-09
4.1.4. 0-4* LCP Keypad
The frequency converter can operate in the following three modes: Hand , Off and Auto .
Hand: The frequency converter is locally operated and does not allow any remote control. By activating Hand a start signal is given.
OFF: The frequency converter stops with a normal stop ramp. When Off is chosen the frequency converter can only be started by pressing either Hand
or Auto on the LCP.
Auto: In Auto-mode the frequency converter can be remote controlled (bus/digital).
0-40 [Hand on] Key on LCP
Option: Function:
[0] Disabled Hand-on key has no function.
[1 ]
*
Enabled Hand-on key is functional.
0-41 [Off/Reset] Key on LCP
Option: Function:
[0] Disable Off/Reset Off/reset key has no function.
[1 ]
*
Enable Off/Reset Stop signal and reset of any faults.
[2] Enable Reset Only Reset only. Stop (Off) function is disabled.
0-42 [Auto on] Key on LCP
Option: Function:
[0] Disabled Auto-on key has no function.
[1 ]
*
Enabled Auto-on key is functional.
4.1.5. 0-5* Copy/Save
0-50 LCP Copy
Option: Function:
The detachable LCP of the frequency converter can be used for storing setups, and thus for transferring data
when moving parameter settings from one frequency converter to another.
NB!
LCP Copy can only be activated from the LCP and ONLY when the motor is coasted.
[1] All to LCP Copy all setups from the frequency converter into the LCP.
[2] All from LCP Copy all setups from LCP to frequency converter.
[3] Size indep. from LCP Copy non motor size dependent data from LCP to frequency converter
0-51 Set-up Copy
Option: Function:
Use this function to copy a set-up content into the Edit Set-up .
In order to be able to make a set-up copy ensure that
• the motor is coasted
• par. 0-10,
Active Set-up , is set to either Set-up 1 [1] or Set-up 2 [2]
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NB!
The keyboard/parameter database are blocked while Set-up Copy is running.
[0 ] *
No Copy Copy function is inactive
[1] Copy from Set-up 1 Copy from
Set-up 1 to edit set-up chosen in par. 0-11, Edit Set-up .
[2] Copy from Set-up 2 Copy from
Set-up 2 to edit set-up chosen in par. 0-11, Edit Set-up .
[9] Copy from Factory Set-
up
Copy from Factory Settings to edit set-up chosen in par. 0-11,
Edit set-up .
4.1.6. 0-6* Password
0-60 (Main) Menu Password
Range: Function:
Use password for protection against unintended change of sensitive parameters, eg. motor parameters.
Password protected parameters can always be read, but cannot be edited without entering the password.
0
* [0 - 999] Enter the password for access to Main Menu via the [Main Menu] key. Select the number that should allow for
changing other parameter values.
0 means there is no password.
NB!
A password only has affect on the LCP - not on the bus communication.
NB!
Pressing buttons [MENU], [OK] and down will unlock the password. This will automatically enter the parameter editing screen in Quick
Menu or Main Menu.
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4.2. Parameter Group 1: Load/Motor
1-00 Configuration Mode
Option: Function:
Use this parameter for selecting the application control principle to be used when a Remote Reference is active.
NB!
Changing this parameter will reset parameters 3-00, 3-02 and 3-03 to their default values.
NB!
This parameter cannot be adjusted while motor runs.
[0 ] *
Speed Open Loop For normal speed control (References).
[3] Process Closed Loop Enables process closed loop control. See par. group 7-3* for further information on PI-controller.
When running in process closed loop, par. 4-10
Motor Speed Direction must be set to Clockwise [0]
1-01 Motor Control Principle
Option: Function:
[0] U/f Is used for parallel connected motors and/or special motor applications. The U/f settings are set in parameters
1-55 and 1-56.
NB!
When running U/f control slip- and load compensations are not included.
[1] *
VVC+ Normal running mode, including slip- and load compensations.
1-03 Torque Characteristics
Option: Function:
With more torque characteristics it is possible to run low energy consuming, as well as high torque applications.
[0 ]
*
Constant Torque Motor shaft output provides constant torque under variable speed control.
[2] Automatic Energy Op-
tim.
This function automatically optimizes energy consumption in centrifugal pump and fan applications. See par.
14-41
AEO Minimum Magnetisation .
1-05 Hand Mode Configuration
Option: Function:
This parameter is only relevant when parameter 1-00 Configuration Mode is set to Process Closed Loop [3]. The
parameter is used for determining the reference or setpoint handling when changing from Auto Mode to Hand
Mode on the LCP.
[0] Speed Open Loop In Hand Mode the drive always runs in Open Loop configuration regardless of setting in par. 1-00
Configuration
Mode
. Local potentiometer (if present) or Arrow up/down determines output frequency limited by Motor Speed
High/Low Limit (parameters 4-14 and 4-12).
[2]
*
As configuration in par.
1-00
If par. 1-00 Configuration Mode is set to Open Loop [1] function is as described above.
If par. 1-00 is set to
Process Closed Loop [3] changing from Auto mode to Hand mode results in a setpoint
change via local potentiometer or Arrow up/down. The change is limited by Reference Max/Min (parameters
3-02 and 3-03).
4.2.1. 1-2* Motor Data
Enter the correct motor nameplate data (power, voltage, frequency, current and speed).
Run AMT, see par. 1-29.
Factory settings for advanced motor data, par. 1-3*, are automatically calculated.
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NB!
Parameters in parameter group 1.2* cannot be adjusted while motor runs.
1-20 Motor Power [kW]/[HP] (P
m.n
)
Option: Function:
Enter motor power from nameplate data.
Two sizes down, one size up from nominal VLT rating.
[1] 0.09 kW/0.12 HP
[2] 0.12 kW/0.16 HP
[3] 0.18kW/0.25 HP
[4] 0.25 kW/0.33 HP
[5] 0.37kW/0.50 HP
[6] 0.55 kW/0.75 HP
[7] 0.75 kW/1.00 HP
[8] 1.10 kW/1.50 HP
[9] 1.50 kW/2.00 HP
[10] 2.20 kW/3.00 HP
[11] 3.00 kW/4.00 HP
[12] 3.70 kW/5.00 HP
[13] 4.00 kW/5.40 HP
[14] 5.50 kW/7.50 HP
[15] 7.50 kW/10.0 HP
[16] 11.00 kW/15.00 HP
NB!
Changing this parameter affects par. 1-22 to 1-25,
1-30, 1-33 and 1-35.
1-22 Motor Voltage (U
m.n
)
Range: Function:
230/400 V [50 - 999 V] Enter motor voltage from nameplate data.
1-23 Motor Frequency (f
m.n
)
Range: Function:
50 Hz * [20-400 Hz] Enter motor frequency from nameplate data.
1-24 Motor Current (I
m.n
)
Range: Function:
M-type dependent * [0.01 - 26.00 A] Enter motor current from nameplate data.
1-25 Motor Nominal Speed (n
m.n
)
Range: Function:
M-type Dependent * [100 - 9999
RPM]
Enter motor nominal speed from nameplate data.
1-29 Automatic Motor Tuning (AMT)
Option: Function:
Use AMT to optimize motor performance.
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NB!
This parameter cannot be changed while motor runs.
1. Stop the frequency converter – make sure motor is at standstill
2. Choose [2] Enable AMT
3. Apply start signal
– Via LCP: Press Hand On
- Or in Remote On mode: Apply start signal on terminal 18
[0]
*
Off AMT function is disabled.
[2] Enable AMT AMT function starts running.
NB!
To gain optimum tuning of frequency converter, run AMT on a cold motor.
4.2.2. 1-3* Adv. Motor Data
Adjust advanced motor data using one of these methods:
1. Run AMT on cold motor. Frequency converter measures value from motor.
2. Enter X1value manually. Obtain value from motor supplier.
3. Use Rs, X1, and X2default setting. Frequency converter establishes setting based on motor nameplate data.
NB!
These parameters cannot be changed while motor runs.
1-30 Stator Resistance (R
s
)
Range: Function:
Depending on motor data * [Ohm] Set stator resistance value.
1-33 Stator Leakage Reactance (X
1
)
Range: Function:
Depending on motor data * [Ohm] Set stator leakage reactance of motor.
1-35 Main Reactance (X
2
)
Range: Function:
Depending on motor data * [Ohm] Set motor main reactance.
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Micro Drive FC 51 4. Parameter Descriptions
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4.2.3. 1-5* Load Independent Setting
This parameter group is for setting the load independent motor settings.
1-50 Motor Magnetization at Zero Speed
Range: Function:
This parameter enables different thermal load on motor when running at low speed.
100 %
* [ 0 - 300%] Enter a percentage of rated magnetizing current. If setting is too low, motor shaft torque may be reduced.
1-52 Min. Speed Normal Magnetizing [Hz]
Range: Function:
Use this parameter along with par. 1-50, Motor Magnetizing at Zero Speed .
0.0 Hz
* [0.0 - 10.0 Hz] Set frequency required for normal magnetizing current. If frequency is set lower than motor slip frequency, par.
1-50,
Motor Magnetizing at Zero Speed is inactive.
1-55 U/f Characteristic - U
Range: Function:
This parameter is an array parameter [0-5] and is only functional when par. 1-01, Motor Control Principle is set
to
U/f [0].
0.0 V
* [0.0 - 999.9 V] Enter voltage at each frequency point to manually form a U/f characteristic matching motor. Frequency points
are defined in par. 1-56,
U/f characteristics - F .
1-56 U/f Characteristic - F
Range: Function:
This parameter is an array parameter [0-5] and is only functional when par. 1-01, Motor Control Principle is set
to
U/f [0].
0.0 Hz
* [0.0 - 1000.0 Hz] Enter frequency points to manually form a U/f characteristic matching motor. Voltage at each point is defined
in par. 1-55,
U/f Characteristic - U .
Make a U/f characteristic based on 6 definable voltages and frequencies, see below figure.
Simplify U/f characteristics by merging 2 or more points (voltages and frequencies), respectively, are set equal.
Illustration 4.1: Fig. 1 U/f characteristics
4. Parameter Descriptions VLT
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Micro Drive FC 51
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NB!
For par. 1-56 the following applies
[0] ู[1] ู[2] ู[3] ู[4] ู[5]
4.2.4. 1-6* Load Dependent setting
Parameters for adjusting the load dependent motor settings.
1-60 Low Speed Load Compensation
Range: Function:
Use this parameter to gain optimum U/f characteristic when running at low speed.
100 %
* [0-199 %] Enter percentage in relation to load when motor runs at low speed.
Change-over point is automatically calculated based on motor size.
1-61 High Speed Load Compensation
Range: Function:
Use this parameter to obtain optimum load compensation when running at high speed.
100 %
* [0 - 199 %] Enter percentage to compensate in relation to load when motor runs at high speed.
Change-over point is automatically calculated based on motor size.
1-62 Slip Compensation
Range: Function:
100 % * [-400 - 399 %] Compensation for load dependent motor slip.
Slip compensation is calculated automatically based on rated motor speed, nM,N.
NB!
This function is only active when par. 1-00,
Configuration Mode , is set to Speed Open Loop
[0], and when par. 1-01, Motor Control Principle , is set to VVC+ [1].
1-63 Slip Compensation Time
Range: Function:
0.10 s [0.05 - 5.00 s] Enter slip compensation reaction speed. A high value results in slow reaction whereas a low value results in quick
reaction.
If low-frequency resonance problems arise, use longer time setting.
VLT
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Micro Drive FC 51 4. Parameter Descriptions
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