Danfoss VLT Adjustable Frequency Drive Operating guide
|
VLT® Adjustable Frequency Drive |
|
■ |
Contents |
|
|
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 6000 Network Strategies |
|
|
Strategy One ........................................................... |
11 |
|
Strategy Two........................................................... |
11 |
|
Strategy Three ......................................................... |
13 |
|
Strategy Four ........................................................... |
13 |
<![endif]>Drive Frequency Adjustable ®VLT
MG.60.G2.22 - VLT is a registered Danfoss Trademark |
1 |
<![endif]>VLT® Adjustable Frequency Drive
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 |
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 |
VLT® Adjustable Frequency Drive
■ 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.
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.
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:
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.
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.
<![endif]>Drive Frequency Adjustable ®VLT
MG.60.G2.22 - VLT is a registered Danfoss Trademark |
3 |
<![endif]>VLT® Adjustable Frequency Drive
VLT® Adjustable Frequency Drive
DANGER:
Touching electrical parts may be fatal - even after equipment has been disconnected from AC line. To be sure that capacitors have fully discharged, wait 14 minutes for 220 and 500 V units and 30 minutes for 550-600 V units after power has been removed before touching any internal component.
■ Introduction |
About This Manual |
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 3- phase, 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.
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® 6000 Adjustable Frequency Drive, 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.
4 |
MG.60.G2.22 - VLT is a registered Danfoss Trademark |
VLT® Adjustable Frequency Drive
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:
Quick menu data for commissioning drive cannot be entered via FLN serial bus.
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.
Figure 1 VLT 6000 Keypad
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.
<![endif]>Drive Frequency Adjustable ®VLT
MG.60.G2.22 - VLT is a registered Danfoss Trademark |
5 |
<![endif]>VLT® Adjustable Frequency Drive
VLT® Adjustable Frequency Drive
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 J and K keys are used to select a parameter group and also to move the cursor to the desired digit when changing numerical values.
Local Control
Start signal via digital inputs may cause drive to start at any time. Remove power to drive before working on output wiring,
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.
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 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 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:
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 automa-
tically 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 |
Parameter Name |
Description |
|
|
|
Item Number |
|
|||
|
|
|
|
|
|
|
1 |
001 |
Language |
Selects language used for all displays. |
|
|
|
|
|
|
|
|
2 |
102 |
Motor Power |
Sets output characteristics of drive based on kW (HP) of |
|
|
motor. See Table 2 to convert HP to kW. |
|
|||
|
|
|
|
|
|
|
3 |
103 |
Motor Voltage |
Sets output characteristics of drive based on voltage of motor. |
|
|
|
|
|||
|
|
|
|
|
|
|
4 |
104 |
Motor |
Sets output characteristics of drive based on nominal |
|
|
|
Frequency |
frequency of motor. This is typically equal to line frequency. |
|
|
|
|
|
|
||
|
|
|
|
Sets output characteristics of drive based on full load current |
|
|
5 |
105 |
Motor Current |
in amps (FLA) of motor. This sets overload protection for |
|
|
|
|
|
motor. |
|
|
6 |
106 |
Motor Nominal |
Sets output characteristics of drive based on nominal full load |
|
|
|
Speed |
speed of motor. |
|
|
|
|
|
|
||
|
7 |
201 |
Minimum |
Sets minimum controlled frequency at which motor will run. |
|
|
|
Frequency |
|
|
|
|
|
|
|
|
|
|
8 |
202 Maximum |
Sets maximum controlled frequency at which motor will run. |
|
|
|
|
Frequency |
|
|
|
|
|
|
|
|
|
|
9 |
206 Ramp Up Time |
Sets time to accelerate motor from 0 Hz to nominal motor |
|
|
|
frequency set in Quick Menu Item 4. |
|
|||
|
|
|
|
|
|
|
10 |
207 |
Ramp Down |
Sets time to decelerate motor from nominal motor frequency |
|
|
|
Time |
set in Quick Menu Item 4 to 0 Hz. |
|
|
|
|
|
|
||
|
11 |
323 |
Relay 1 |
Sets function of high voltage Form C relay. |
|
|
|
Function |
|
||
|
|
|
|
|
|
|
12 |
326 |
Relay 2 |
Sets function of low voltage Form A relay. |
|
|
|
Function |
|
||
|
|
|
|
|
|
During programming of parameters, motor may start. Be certain no one is in area of motor or driven equipment when changing parameters.
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 J and K arrows.
Flashing underline indicates digit selected to change.
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.
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 J key twice – hundreds digit will flash.
5.Press “+” key once to change hundreds digit to ‘1.’
6.Press K key once to move cursor to tens digit.
<![endif]>Drive Frequency Adjustable ®VLT
MG.60.G2.22 - VLT is a registered Danfoss Trademark |
7 |
<![endif]>VLT® Adjustable Frequency Drive
VLT® Adjustable Frequency Drive
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 Menu parameters, press the Extend Menu key.
NOTE:
Programming of parameter functions available through Extended Menu is done in accor-
dance 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 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 |
MG.60.G2.22 - VLT is a registered Danfoss Trademark |
VLT® Adjustable Frequency Drive
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
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
<![endif]>Drive Frequency Adjustable ®VLT
MG.60.G2.22 - VLT is a registered Danfoss Trademark |
9 |
Loading...