Danfoss VLT Adjustable Frequency Drive Operating guide
■■
■ Contents
■■
VLT® Adjustable Frequency Drive
Introduction
Safety.......................................................................3
Safety Guidelines........................................................3
Warnings Against Unintended Start ...............................3
Introduction ...............................................................4
About this manual.......................................................4
Assumptions..............................................................4
References................................................................4
Trademarks ...............................................................5
Programming the VLT 6000
Control Panel.............................................................5
Parameter Change Keys .............................................5
Local Control .............................................................6
Quick Menu ..............................................................6
To Enter or Change Quick Menu Parameter Data...........7
Example of Changing Parameter Data...........................7
Extended Menu..........................................................8
HP/kW......................................................................8
VLT 6000 Functional Features
Drive Operation..........................................................8
Motor and Drive Thermal Protection .............................8
Set-up 1-4.................................................................8
Current Monitoring and Limits.......................................9
Direction of Rotation ...................................................9
Start/Stop..................................................................9
Freeze Mode .............................................................9
Coast........................................................................9
Motor Ramp-up and Ramp-down Rate .........................9
Lock Panel................................................................9
Hand/Auto Modes.......................................................9
Run Enable................................................................9
Bus Functions............................................................9
Frequency Out High, Low Limits...................................9
Relay Out 1,2 ...........................................................9
PID Control Functions................................................10
Sleep Mode .............................................................10
Drive Control Display .................................................10
Terminals.................................................................10
Faults, Warnings and Alarms ......................................10
Error Status .............................................................10
VLT
®
Adjustable Frequency Drive
MG.60.G2.22 - VLT is a registered Danfoss Trademark
VLT 6000 Network Strategies
Strategy One ...........................................................11
Strategy Two........................................................... 11
Strategy Three .........................................................13
Strategy Four...........................................................13
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VLT® Adjustable Frequency Drive
VLT 6000 Special Functions
Safety Interlock ...........................................................15
Analog Input Monitoring ...............................................15
Drive Relay Control 15
Network Connection
Hardware Setup..........................................................16
Electrical Control Terminals............................................17
Typical Control Connection Examples..............................18
Adjustable Frequency Drive
®
VLT
VLT 6000 Functional Features
Startup of FLN Manual .................................................20
Faults, Warnings and Alarms .........................................20
Point Mapping Table .....................................................22
Point Mapping Table Notes............................................25
Point Database Definitions.............................................26
2
MG.60.G2.22 - VLT is a registered Danfoss Trademark
■■
■ Safety
■■
Rotating shafts and electrical equipment
can be hazardous. Therefore, it is
strongly recommended that all electrical
work conform to National Electrical Code
(NEC) and all local regulations. Installation, start-up
and maintenance should be performed only by qualified personnel.
Factory recommended procedures, included in this
manual, should be followed. Always disconnect
electrical power before working on the unit.
Although shaft couplings or belt drives are generally
not furnished by the manufacturer, rotating shafts,
couplings and belts must be protected with securely
mounted metal guards that are of sufficient thickness
to provide protection against flying particles such as
keys, bolts and coupling parts. Even when the motor
is stopped, it should be considered “alive” as long as
its controller is energized. Automatic circuits may
start the motor at any time. Keep hands away from
the output shaft until the motor has completely
stopped and power is disconnected from the
controller.
Motor control equipment and electronic controls are
connected to hazardous line voltages. When
servicing drives and electronic controls, there will be
exposed components at or above line potential.
Extreme care should be taken to protect against
shock. Stand on an insulating pad and make it a
habit to use only one hand when checking components. Always work with another person in case of
an emergency. Disconnect power whenever possible to check controls or to perform maintenance.
Be sure equipment is properly grounded. Wear safety
glasses whenever working on electric control or
rotating equipment.
VLT® Adjustable Frequency Drive
3. Correct protective grounding of the equipment
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. Ground currents are higher than 3 mA.
Warnings Against Unintended Start
1. While the drive is connected to the AC line, the
motor can be brought to a stop by means of
external switch closures, serial bus commands
or references. If personal safety considerations
make it necessary to ensure that no unintended start occurs, these stops are not
sufficient.
2. During programming of parameters, the motor
may start. Be certain that no one is in the area
of the motor or driven equipment when
changing parameters.
3. A motor that has been stopped may start
unexpectedly if faults occur in the electronics
of the drive, or if an overload, a fault in the
supply AC line or a fault in the motor
connection or other fault clears.
4. If the “Local/Hand” key is activated, the motor
can only be brought to a stop by means of the
“Stop/Off” key or an external safety interlock
NOTE:NOTE:
NOTE:
NOTE:NOTE:
It is responsibility of user or person installing
drive to provide proper grounding and branch
circuit protection for incoming power and
motor overload according to National Electrical
Code (NEC) and local codes.
VLT
®
Adjustable Frequency Drive
Safety Guidelines
1. The drive must be disconnected from the AC
line before any service work is done.
2. The “Stop/Off” key on the local control panel
of the drive does not disconnect the equipment from the AC line and is not to be used
as a safety switch.
MG.60.G2.22 - VLT is a registered Danfoss Trademark
The Electronic Thermal Relay (ETR) in UL listed
VLTs provides Class 20 motor overload protection
in accordance with NEC in single motor applications, when parameter 117 is set for ETR TRIP 1,
ETR TRIP 2, ETR TRIP 3, or ETR TRIP 4, and
parameter 105 is set for rated motor
(nameplate) current.
3
VLT® Adjustable Frequency Drive
DANGER:
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ouching electrical parts may be fatal - even after equipment hasouching electrical parts may be fatal - even after equipment has
T
ouching electrical parts may be fatal - even after equipment has
TT
ouching electrical parts may be fatal - even after equipment hasouching electrical parts may be fatal - even after equipment has
been disconnected frbeen disconnected fr
been disconnected fr
been disconnected frbeen disconnected fr
fully discharged, wait 14 minutes for 220 and 500 V units and 30fully discharged, wait 14 minutes for 220 and 500 V units and 30
fully discharged, wait 14 minutes for 220 and 500 V units and 30
fully discharged, wait 14 minutes for 220 and 500 V units and 30fully discharged, wait 14 minutes for 220 and 500 V units and 30
minutes for 550-600 V units after power has been removedminutes for 550-600 V units after power has been removed
minutes for 550-600 V units after power has been removed
minutes for 550-600 V units after power has been removedminutes for 550-600 V units after power has been removed
beforbefor
befor
beforbefor
Adjustable Frequency Drive
®
VLT
■ ■
■ Introduction
■ ■
The Siemens Floor Level Network (FLN) is a master/
slave control network for serial communication with
various control devices. The FLN controller is RS485 compatible, half duplex, with an operating rate
of 4800 or 9600 baud. Recommended wiring is
shielded, twisted pair. The FLN software protocol is
designed to be general in nature to accommodate
any unique properties of each device type. The node
address system allows up to 96 devices to be used
on any one system.
The Danfoss VLT 6000 is a programmable adjustable
frequency drive which controls the operation of 3phase, standard induction electrical motors in the
HVAC industry. The VLT 6000 controller has FLN
communication protocol software built-in. The drive
uses optical isolation for fault tolerance and noise
immunity.
The FLN communicates directly with the VLT 6000
drive via the RS-485 serial interface bus. In addition
to being able to control the drive, most drive configuration and control parameters can be reviewed
and changed through the FLN. Also, the operational status of the drive can be read and monitored
through the bus. Diagnostic and operational information stored in the VLT 6000 is easily available,
such as kWh of energy used, total operation hours,
drive status, motor speed, and many other useful
items which can be accessed and monitored
through the FLN.
The FLN is designed to communicate with any
controller node that supports the interfaces defined
in this document.
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About This Manual
The documentation in this manual provides
comprehensive information on the connection,
programming, and start-up of the VLT 6000 for
use with the FLN. It is intended as both an instruction and reference manual. Functions and features
of the VLT 6000 adjustable frequency drive are also
briefly reviewed to serve as a guideline to optimize
your communication system. Read this manual
before programming since important information is
provided in each section.
For detailed information on using the VLT 6000, see
the VLT 6000 Operating Instructions.
Assumptions
This manual assumes that the controller node
supports the interfaces in this document and that
all the requirements and limitations stipulated in the
controller node and the VLT 6000 are strictly observed. It is assumed that the user understands
the general capabilities and limitation of the controller node and the VLT 6000 adjustable frequency
drive.
References
Installation, Operation and Maintenance Manual
for the VLT
Danfoss Graham document 23-6108-00.
(Referred to as the VLT 6000 Operating Instructions
in this manual.)
Operating Instructions VLT 6000 HVAC Frequency
Converter, Danfoss document MG.60.AX.YY
(International version of the VLT 6000 Operating
Instructions.)
Contact Siemens for operational instructions for the
Floor Level Network.
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®
6000 Adjustable Frequency Drive,
4
MG.60.G2.22 - VLT is a registered Danfoss Trademark
Trademarks
®
FLN
is a Siemens registered trademark.
®
VLT
is a Danfoss registered trademark.
■■
■ Programming the VLT 6000
■■
The VLT 6000 adjustable frequency drive is delivered
for installation and setup with the required application parameters already programmed at the factory.
Specific motor nameplate data may have to be
entered at the time of setup. The instructions in this
section are intended to provide a general understanding of programming procedures and to enter
Quick Menu setup data. See the VLT 6000
Operating Instructions for detailed information.
NOTE:NOTE:
NOTE:
NOTE:NOTE:
Quick menu data for commissioning drive
cannot be entered via FLN serial bus.
VLT® Adjustable Frequency Drive
during normal operation, and controlling the drive
speed during local speed control operation.
The keys below the indicator lamps are used for
Start/Stop control, selection of the operating
location, and reset.
FigurFigur
e 1 e 1
Figur
e 1 VLT 6000 Keypad
FigurFigur
e 1 e 1
VLT
®
Adjustable Frequency Drive
Control Panel
The Local Control Panel (LCP), see Figure 1, is a
complete interface for programming and operating
the drive. The control panel can be removed from
the drive and installed up to 3 meters (10 feet) away
using the remote mounting kit.
The control panel has five functions:
- Display
- Keys for changing the display
- Keys for changing programming parameters
- Keys for controlling drive operation
- Indicator lamps
The LCP uses a four-line, alpha-numeric LCD
display. The display can show four operating data
values and three operating condition values
continuously. During programming, all the information
required for quick, effective parameter setup of the
drive is displayed. All drive parameters can be
changed from the control panel. Three lamps indicate
power on (ON), warning (WARNING) and
alarm (ALARM).
Parameter Change Keys
The LCP keys are divided into groups by function.
The keys above indicator lamps are used for
parameter setup, selecting the display indication
The DISPLAY MODE key is used to
change a display mode or to return
to the Display Mode from either the
Quick Menu or the Extend Menu
mode.
The QUICK MENU key gives access
to the parameters available for the
Quick Menu setup. Parameters in
this menu are the 12 most important
setup parameters for the drive.
The EXTEND.MENU key gives
access to all parameters.
The CHANGE DATA key is used for
changing the value of a selected
parameter. To change data, the
desired parameter is first selected. The
CHANGE DATA key is then pressed to
enable editing of the parameter. An
underline in the display will move under
the parameter‘s value to show that it is
being edited.
MG.60.G2.22 - VLT is a registered Danfoss Trademark
5
VLT® Adjustable Frequency Drive
Adjustable Frequency Drive
®
VLT
Local Control
motor or any driven equipment.
Below the indicator lamps on the LCP are keys
used to determine control of the drive. Each key can
be individually enabled or disabled using parameters
012 through 015. The Hand Start and Auto Start
keys are disabled if any of the control terminals are
programmed for either Remote Hand or Remote
Auto.
201, Output Frequency Low Limit, motor will start
and ramp up to this frequency when HAND START
key is pressed. If drive is already running in Auto
Mode when HAND START is pressed, drive will begin
running in Hand Mode and in local control.
The CANCEL key is used if a change of
the selected parameter is not to be
carried out.
The OK key is used to activate a
change to the selected parameter.
The + and - keys are used to scroll
through parameters and to increase or
decrease the value of a chosen
parameter. The keys are also used to
change the local reference. In Display
Mode, the keys are used to switch
between readouts.
The t and u keys are used to select a
parameter group and also to move the
cursor to the desired digit when
changing numerical values.
Start signal via digital inputs may cause
drive to start at any time. Remove power
to drive before working on output wiring,
The HAND START key is used to start
the drive from the control panel.
Pressing HAND START issues a start
command to the drive.
If a minimum speed is set in parameter
The OFF/STOP key is used for
stopping the connected motor in either
the Hand or Auto Mode. Enable or
disable this function via parameter 013,
OFF/START on LCP. If this stop
function is activated, the second line in
the LCD display will flash.
AUTO START is used if the drive is to
be started via FLN serial communication and/or the digital control
terminals. When a remote start signal
is received, the drive will start if the
AUTO START key has been pressed.
NOTE:NOTE:
NOTE:
NOTE:NOTE:
AUTO START key must be pressed to
enable starting drive from FLN serial bus or
remote terminals.
RESET is used for manually
resetting the drive after an alarm
(fault trip). In this case, the top line of
the display shows TRIP (RESET). If
the top line of the display shows TRIP
(AUTO START), the drive will automatically restart. If the top line of the display
shows TRIPLOCK (DICS.MAINS), input
power to the drive must be removed
before the trip can be reset.
.
Quick Menu
The QUICK MENU key gives access to 12 of the
most important setup parameters of the drive. After
Quick Menu programming, in many cases the drive
will be ready for operation. The 12 Quick Menu
parameters are shown in Table 1. Refer to the VLT
6000 Operating Instructions for a complete
description of the functions.
6
MG.60.G2.22 - VLT is a registered Danfoss Trademark
VLT® Adjustable Frequency Drive
Table 1 Quick Menu Items Description
Quick Menu
Item Number
1 001 Language Selects language used for all displays.
2 102 Motor Power
3 103 Motor Voltage
4
5 105 Motor Current
6
7
8
9 206 Ramp Up Time
10
11
12
During programming of parameters, motor may start. Be certain no one is in area
of motor or driven equipment when
changing parameters.
Parameter Name Description
Sets output characteristics of drive based on kW (HP) of
motor. See Table 2 to convert HP to kW.
Sets output characteristics of drive based on voltage of motor.
104 Motor
Frequency
106 Motor Nominal
Speed
201 Minimum
Frequency
202 Maximum
Frequency
207 Ramp Down
Time
323 Relay 1
Function
326 Relay 2
Function
Sets output characteristics of drive based on nominal
frequency of motor. This is typically equal to line frequency.
Sets output characteristics of drive based on full load current
in amps (FLA) of motor. This sets overload protection for
motor.
Sets output characteristics of drive based on nominal full load
speed of motor.
Sets minimum controlled frequency at which motor will run.
Sets maximum controlled frequency at which motor will run.
Sets time to accelerate motor from 0 Hz to nominal motor
frequency set in Quick Menu Item 4.
Sets time to decelerate motor from nominal motor frequency
set in Quick Menu Item 4 to 0 Hz.
Sets function of high voltage Form C relay.
Sets function of low voltage Form A relay.
5. Press Cancel key to disregard change, or
press OK key to accept change and enter
new setting.
6. Press Display key to return to normal display.
VLT
®
Adjustable Frequency Drive
To Enter or Change Quick Menu Parameter
Data
Enter or change parameter data or settings in
accordance with the following procedure.
1. Press Quick Menu key.
2. Use ‘+’ and ‘-’ keys to find parameter you
chose to edit.
3. Press Change Data key.
4. Use ‘+’ and ‘-’ keys to select correct
parameter setting. To move to a different digit
within parameter, use t and u arrows.
Flashing underline indicates digit selected to
change.
MG.60.G2.22 - VLT is a registered Danfoss Trademark
Example of Changing Parameter Data
Assume parameter 206, Ramp Up Time, is set at
60 seconds. Change the ramp up time to 100
seconds in accordance with the following
procedure.
1. Press Quick Menu key.
2. Press “+” key until you reach Parameter 206,
Ramp Up Time.
3. Press Change Data key.
4. Press t key twice – hundreds digit will flash.
5. Press “+” key once to change hundreds digit
to ‘1.’
6. Press u key once to move cursor to tens
digit.
7
7. Press “-” key until ‘6’ counts down to ‘0’ and
setting for Ramp Up Time reads ‘100 s.’
8. Press OK key to enter new value into drive
controller.
9. Press Display key to return to normal display.
Extended Menu
In some applications, the Quick Menu items will not
set up all the desired characteristics of the drive. To
access all VLT 6000 parameters, including the Quick
Adjustable Frequency Drive
®
Menu parameters, press the Extend Menu key.
VLT
NOTE:NOTE:
NOTE:
NOTE:NOTE:
Programming of parameter functions available
through Extended Menu is done in accordance with same procedure as described for Quick
Menu functions.
HP/kW Conversion
A conversion index for determining kW and HP
ratings is shown in Table 2.
Table 2 HP to kW Conversion Index
kW HP kW HP
0.25 0.33 45 60
0.37 0.5 55 75
0.55 0.75 75 100
0.75 1.0 90 125
1.1 1.5 110 150
1.5 2.0 132 175
2.2 3.0 160 200
3.0 --- 200 300
4.0 5.0 250 ---
5.5 7.5 300 ---
7.5 10 315 350
11 15 355 450
15 20 400 500
18.5 25 450 600
22 30
30 40
37 50
VLT® Adjustable Frequency Drive
■ ■
■ VLT 6000 Functional Features
■ ■
The FLN protocol built into the VLT 6000 adjustable
frequency drive allows programming of numerous
features and monitoring of the drive via the serial bus
and the standard RS-485 port. The VLT 6000 also
has the capability to control closed or open loop
systems on its own and has been designed
specifically for HVAC applications. Always accessible
in real-time are the system status, what the motor
and drive are doing, and if there are any problems.
The VLT 6000 continuously monitors all aspects of
motor and drive status and issues alarms or
warnings for adverse conditions.
The FLN interacts with the drive based upon a point
map database and the selected interface strategy.
Many, but not all, drive features are accessible
through the point map. See the VLT 6000 Operating
Instructions for more drive details. Table 8 lists the
map points and Table 9 supplies definitions. Below is
a review of some frequently used drive features and
the associated point map numbers.
Drive Operation (03-14)
These points provide the FLN with operational status
information such as output frequency, motor current,
output voltage, power and energy. The run time in
hours that power has been supplied to the motor is
also stored for display, along with cumulative energy
used in kWh.
Motor and Drive Thermal Protection (15, 16, 18)
The motor and drive are protected against thermal
overload. The percentage of thermal load is displayed. Point 18 indicates if either the motor or drive
thermal limit has been exceeded.
Set-up 1 - 4 (17) (29)
The drive is capable of maintaining four independent
program set-ups. Each set-up supports independent
point map configurations. Seasonal changes, various
acceleration or deceleration rates, or other operation
modes can be accommodated. Point 17 indicates
which setup is active. The set-up change is
programmed through the drive’s keypad or digital I/
Os. Day/night operation is implemented in the point
map (29) but is not used in this application.
8
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Current Monitoring and Limits (19, 30)
The maximum current that the drive provides to the
motor can be limited. This tends to limit the torgue
that can be produced by the motor. Data point 30
sets the current limit in amps, while data point 19
indicates if the motor is operating at that current
limit.
Direction of Rotation (21-22)
The drive responds to serial commands to reverse
direction of the motor. The drive can safely reverse
motor rotation while in operation. Many applications
benefit from this ability, such as vane axial fans
reversed for smoke extraction or cooling towers for
deicing. Parameter 506, Reversing, must be set to
serial communication for point 22 to command the
feature.
Start/Stop (23, 24)
To run the drive from the FLN or in Auto mode from
the drive‘s digital control terminals, a start command
must be given at data point 24. When a stop
command is given at this point, the drive will only run
in Hand mode.
Freeze Mode (25, 26)
If desired, the frequency of the drive can be frozen
at its present value. The mode is indicated by data
point 25. It is an option available when serial
interface is lost.
Coast (27, 28)
The coast command (28) shuts down the inverter
and makes the motor freewheeling, which normally
brings it to stand still. The drive cannot be restarted
in any mode before the coast command is removed.
It is, therefore, often used as a safety interlock. Data
point 27 indicates when the drive is coasted.
Motor Ramp-up and Ramp-down Rate (31, 32)
The time to accelerate or decelerate the drive
between 0 Hz and the motor’s nominal frequency
can be programmed. The drive is capable of settings
between one to 3600 seconds (one hour).
Lock Panel (33)
The local control panel on the VLT 6000 drive can be
locked to ensure that program data or drive control
functions cannot be changed locally. The Stop button on the keypad will also be locked out and be
VLT® Adjustable Frequency Drive
incapable of stopping the drive. The serial interface
continues to access drive settings.
Hand/Auto Modes (34)
The SEL HND.AUTO shows which mode the drive is
in. The drive can be commanded into either Hand or
Auto mode by pressing the respective keys on the
keypad of the drive. Hand mode disables any programmed control strategies and allows the drive
keypad to be used to set the drive speed. The only
serial communication command that can override
Hand mode is data point 28, CMD COAST.
Run Enable (35)
Set data point 35 to ON to run the drive from the
FLN with default drive parameter settings. In the OFF
mode, the drive will run only in Hand mode or in Auto
mode from the drive‘s digital control terminals.
Parameter 505, Start, controls the interaction of
point 35 and the digital run command.
Bus Functions (36, 37)
The amount of time the drive will wait between
communication packets is programmable. If the time
is exceeded, the drive will assume serial communication has stopped and respond with programmable
choices. The drive can ignore the loss, freeze its
current output, stop, run at a predetermined jog
frequency, run at maximum output frequency or stop
and trip while issuing an alarm. Wait time is selected
at point 36 and the function after a timeout at point
37. See descriptions for parameters 565, FLN Bus
Time Interval and 566, FLN Bus Time Interval
Function in the VLT 6000 Operating Instructions.
Frequency Out High, Low Limits (38, 39)
Limits to the maximum and minimum drive output
frequency are programmable. For example, pump
manufacturers typically recommend not to operate pumps below a certain speed (for example, 15 Hz)
to avoid seal problems.
Relay Out 1, 2 (40, 41, 43, 44)
Two programmable relay outputs (one Form C, 240
VAC, 2 Amp; and one Form A, 30 VAC, 1 Amp) are
available. These can be triggered through the serial
bus by command points 40 and 41. This allows the
FLN to utilize the drive’s built-in relays as additional
network programmable relays. The data points 43
and 44 indicate whether the relay is triggered or not
VLT
®
Adjustable Frequency Drive
MG.60.G2.22 - VLT is a registered Danfoss Trademark
9
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