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VLT Refrigeration Drive FC-103P90KT4
Руководство по проектированию Страница: 64

Danfoss VLT Refrigeration Drive FC-103P90KT4 [64/138] Electrical installation and control cables

5.2.2 Electrical Installation and Control Cables

Illustration 5.6 Diagram Showing all Electrical Terminals. (Terminal 37 Present for Units with Safe Stop Function only.)

How to Install

VLT

Refrigeration Drive Design Guide

MG16G102 - VLT

is a registered Danfoss trademark 63

Содержание

Design guide 1
Mg16g102 1
Refrigeration drive 1
Aggressive environments 2
Air humidity 2
Ce labelling 2
Contents 2
Control structures 2
Drive selection 2
Earth leakage current 2
Extreme running conditions 2
Galvanic isolation pelv 2
General aspects of emc 2
How to install 2
How to order 2
How to read this design guide 2
Introduction 2
Mechanical installation 2
Options and accessories 2
Ordering form 2
Ordering numbers 2
Safe stop 2
Vibration and shock 2
Additional connections 3
Application examples 3
Electrical installation 3
Emc correct installation 3
Fc protocol message framing structure 3
Fc protocol overview 3
Final set up and test 3
Installation of misc connections 3
Rs 485 installation and set up 3
Safety 3
Alarm and status messages 4
Efficiency 4
Examples 4
Fc control profile 4
General specifications 4
General specifications and troubleshooting 4
How to access parameters 4
Modbus rtu message framing structure 4
Modbus rtu overview 4
Special conditions 4
Approvals certificates 6
Available literature for vl 6
Caution 6
How to read this design guide 6
Legal information 6
Refrigeration drive fc 103 6
Software version and approvals vl 6
Symbols 6
Warning 6
Abbreviations 7
Definitions 7
How to read this design gui vlt 7
Indicates highlighted information that should be regarded with attention to avoid mistakes or operate equipment at less than optimal performance 7
Refrigeration drive design guide 7
The maximum motor frequency 7
The maximum output current 7
The maximum output voltage 7
The minimum motor frequency 7
The motor current 7
The motor frequency 7
The motor frequency when the jog function is activated via digital terminals 7
The rated motor current nameplate data 7
The rated motor frequency nameplate data 7
The rated motor speed nameplate data 7
The rated output current supplied by the frequency converter 7
Power factor 10
Caution 11
Introduction 11
Safety 11
Safety note 11
Warning 11
Caution 12
Ce conformity and labelling 12
Ce labelling 12
What is covered 12
Aggressive environments 13
Air humidity 13
Caution 13
Compliance with emc directive 2004 108 ec 13
Danfoss frequency converter and ce labelling 13
Warning 14
Introduction vlt 15
Refrigeration drive design guide 15
Safe stop installation 16
Introduction vlt 17
Refrigeration drive design guide 17
A frequency converter takes advantage of the fact that centrifugal fans and pumps follow the laws of propor tionality for such fans and pumps for further information see the text and figure the laws of proportionality 18
Advantages 18
As can be seen from the figure the laws of propor tionality the flow is controlled by changing the rpm by reducing the speed only 20 from the rated speed the flow is also reduced by 20 this is because the flow is directly proportional to the rpm the consumption of electricity however is reduced by 50 if the system in question only needs to be able to supply a flow that corresponds to 100 a few days in a year while the average is below 80 of the rated flow for the remainder of the year the amount of energy saved is even more than 50 18
Example of energy savings 18
Introduction vlt 18
Refrigeration drive design guide 18
The clear advantage energy savings 18
The very clear advantage of using a frequency converter for controlling the speed of fans or pumps lies in the electricity savings when comparing with alternative control systems and technologies a frequency converter is the optimum energy control system for controlling fan and pump systems 18
Why use a frequency converter for controlling fans and pumps 18
Comparison of energy savings 19
Example with varying flow over 1 year 19
As illustrated in the figure below a frequency converter does not consume more than rated current 20
Better control 20
Cos φ compensation 20
Frequency converter in this example it is less than a year when compared with valves and constant speed 20
Generally speaking the vl 20
If a frequency converter is used for controlling the flow or pressure of a system improved control is obtained a frequency converter can vary the speed of the fan or pump thereby obtaining variable control of flow and pressure furthermore a frequency converter can quickly adapt the speed of the fan or pump to new flow or pressure conditions in the system simple control of process flow level or pressure utilizing the built in pid control 20
Introduction vlt 20
Refrigeration drive design guide 20
Refrigeration drive fcr 103 has a cos φ of 1 and provides power factor correction for the cos φ of the motor which means that there is no need to make allowance for the cos φ of the motor when sizing the power factor correction unit 20
Star delta starter or soft starter not required 20
When larger motors are started it is necessary in many countries to use equipment that limits the start up current in more traditional systems a star delta starter or soft starter is widely used such motor starters are not required if a frequency converter is used 20
Control principle 21
Control structure open loop 21
Control structures 21
Local hand on and remote auto on control 21
Control structure closed loop 22
Feedback conversion 23
Feedback handling 23
Reference handling 24
Example of closed loop pid control 25
Programming order 25
General aspects of emc 26
General aspects of emc emissions 26
Manual pid adjustment 26
Tuning the drive closed loop controller 26
According to the emc product standard for adjustable speed frequency converters en iec 61800 3 2004 the emc requirements depend on the intended use of the frequency converter four categories are defined in the emc product standard the definitions of the 4 categories together with the requirements for mains supply voltage conducted emissions are given in table 2 27
Emission requirements 27
If the screen is to be placed on a mounting plate for the frequency converter the mounting plate must be made of metal because the screen currents have to be conveyed back to the unit moreover ensure good electrical contact from the mounting plate through the mounting screws to the frequency converter chassis 27
In order to reduce the interference level from the entire system unit installation make motor and brake cables as short as possible avoid placing cables with a sensitive signal level alongside motor and brake cables radio interference higher than 50 mhz airborne is especially generated by the control electronics see for more information on emc 27
Introduction vlt 27
Refrigeration drive design guide 27
When the generic emission standards are used the frequency converters are required to comply with the following limits 27
When unscreened cables are used some emission requirements are not complied with although the immunity requirements are observed 27
Will be necessary to break the screen to avoid current loops 27
Introduction vlt 28
Refrigeration drive design guide 28
A frequency converter takes up a non sinusoidal current from mains which increases the input current 29
A non sinusoidal current is transformed by means of a fourier analysis and split up into sine wave currents with different frequencies i e different harmonic currents 29
Emc test results emission 29
General aspects of harmonics emission 29
Industrial environment housing trades and light industries 29
Introduction vlt 29
Potentiometer as well as a motor and motor screened cable 29
Refrigeration drive design guide 29
Rfi filter type conducted emission maximum shielded cable length radiated emission 29
Standard en 55011 class a2 en 55011 class a1 en 55011 class b en 55011 class a1 en 55011 class b 29
The following test results have been obtained using a system with a frequency converter with options if relevant a screeened control cable a control box with 29
The harmonics do not affect the power consumption directly but increase the heat losses in the installation transformer cables consequently in plants with a high percentage of rectifier load maintain harmonic currents at a low level to avoid overload of the transformer and high temperature in the cables 29
With 50 hz as the basic frequency 29
Harmonics emission requirements 30
Harmonics test results emission 30
Immunity requirements 30
Basic standard burst iec 61000 4 4 surge iec 61000 4 5 esd iec 61000 4 2 31
Introduction vlt 31
Radiated electromagnetic field iec 61000 4 3 31
Refrigeration drive design guide 31
Rf common mode voltage iec 61000 4 6 acceptance criterion b b b a a voltage range 200 240 v 380 480 v 31
All control terminals and relay terminals 01 03 04 06 comply with pelv protective extra low voltage with the exception of grounded delta leg above 400 v 32
Current transducers 32
Emc test results emission 32
Galvanic ensured isolation is obtained by fulfilling requirements for higher isolation and by providing the relevant creepage clearance distances these requirements are described in the en 61800 5 1 standard 32
Galvanic isolation pelv 32
Gate drive that runs the igbts trigger transformers opto couplers 32
In order to maintain pelv all connections made to the control terminals must be pelv e g thermistor must be reinforced double insulated 32
Indicating the voltage of intermediate dc link circuit 32
Industrial environment housing trades and light industries 32
Introduction vlt 32
Pelv offers protection by way of extra low voltage protection against electric shock is ensured when the electrical supply is of the pelv type and the installation is made as described in local national regulations on pelv supplies 32
Pelv protective extra low voltage 32
Potentiometer as well as a motor and motor screened cable 32
Power supply smps incl signal isolation of 32
Refrigeration drive design guide 32
Rfi filter type conducted emission maximum shielded cable length radiated emission 32
Standard en 55011 class a2 en 55011 class a1 en 55011 class b en 55011 class a1 en 55011 class b 32
The components that make up the electrical isolation as described below also comply with the requirements for higher isolation and the relevant test as described in en 61800 5 1 the pelv galvanic isolation can be shown in six locations see illustration 2 2 32
The following test results have been obtained using a system with a frequency converter with options if relevant a screeened control cable a control box with 32
Warning 33
Extreme running conditions 34
Warning 34
Motor thermal protection 35
Drive selection 37
General purpose input output module mcb 101 37
Mounting of option modules in slot b 37
Options and accessories 37
Analog voltage inputs terminal x30 10 12 38
Digital inputs terminal x30 1 4 38
Drive selection vlt 38
Galvanic isolation in the mcb 101 digital analog inputs are galvanically isolated from other inputs outputs on the mcb 101 and in the control card of the frequency converter digital analog outputs in the mcb 101 are galvanically isolated from other inputs outputs on the mcb 101 but not from these on the control card of the frequency converter 38
If the digital inputs 7 8 or 9 are to be switched by use of the internal 24 v power supply terminal 9 the connection between terminal 1 and 5 which is shown in illustration 3 has to be established 38
Refrigeration drive design guide 38
Analog outputs terminal x30 5 8 39
Cable strips for fastening cables to relay module 39
Digital outputs terminal x30 5 7 39
Drive selection vlt 39
Electrical data max terminal load ac 1 39
Extended lcp frame and enlarged terminal cover 39
Inductive load 24 v dc 0 a 39
Inductive load cosφ 0 240 v ac 0 a 39
Label for covering access to switches s201 s202 and s801 39
Max switching rate at rated load min load 6 mi 39
Max terminal load ac 15 39
Max terminal load dc 1 39
Max terminal load dc 13 39
Min terminal load dc 5 v 10 ma 39
Refrigeration drive design guide 39
Relay module mcb 105 39
Relay option mcb 105 39
Resistive load 24 v dc 1 a 39
Resistive load 240 v ac 2a 39
The mcb 105 option includes 3 pieces of spdt contacts and must be fitted into option slot b 39
When the relay option kit is ordered separately the kit includes 39
Drive selection vlt 40
Refrigeration drive design guide 40
Warning 41
V back up option mcb 107 option d 42
Warning 42
Analog i o option mcb 109 43
Cabling 45
How to install option in frequency converter 45
Maximum cable lengths 45
The lonworks option 45
Drive selection vlt 47
Refrigeration drive design guide 47
The lcp can be moved to the front of a cabinet by using the remote built in kit the enclosure is the ip66 the fastening screws must be tightened with a torque of max 1nm 47
Ip21 ip41 type 1 enclosure kit 48
Drive selection vlt 49
Ip 21 type 1 enclosure kit 49
Place the top cover as shown if an a or b option is used the brim must be fitted to cover the top inlet place the base part c at the bottom of the frequency converter and use the clamps from the accessory bag to correctly fasten the cables holes for cable glands size a2 2x m25 and 3xm32 size a3 3xm25 and 3xm32 49
Refrigeration drive design guide 49
Drive selection vlt 50
Refrigeration drive design guide 50
Side by side installation is not possible when using the ip 21 ip 4x type 1 enclosure kit 50
Output filters 51
Description pos possible choice 52
Drive configurator 52
Example of drive configurator interface set up the numbers shown in the boxes refer to the letter figure number of the type code string read from left to right 52
Fc 103 102p18kt4e21h1xgcxxxsxxxxagbkcxxxxdx 52
From the internet based drive configurator you can configure the right frequency converter for the right application and generate the type code string the drive configurator will automatically generate an eight digit sales number to be delivered to your local sales office furthermore you can establish a project list with several products and send it to a danfoss sales representative 52
How to order 52
How to order vlt 52
It is possible to design a frequency converter according to the application requirements by using the ordering number system 52
Order the frequency converter as either standard or with integral options by sending a type code string describing the product a to the local danfoss sales office i e 52
Ordering form 52
Ordering numbers for frequency converter standard variants can also be located in 4 how to order 52
Refrigeration drive design guide 52
The drive configurator can be found on the global internet site www danfoss com drives 52
The meaning of the characters in the string can be located in the pages containing the ordering numbers in 3 drive selection in the example above a akd lonworks option and a general purpose i o option is included in the frequency converter 52
Type code string 52
Description pos possible choice 53
How to order vlt 53
Refrigeration drive design guide 53
How to order vlt 54
Options can be ordered as factory built in options see ordering information 54
Ordering numbers 54
Ordering numbers options and accessories 54
Refrigeration drive design guide 54
Type description ordering no miscellaneous hardware i 54
How to order vlt 55
Refrigeration drive design guide 55
Be aware that only vlt refrigeration drives running sw v 1 x or above support the use of ahf and swf filters du dt filters are supported and can be used on any software version 56
For ordering numbers for du dt filters see output filter design guide mg90n 56
For ordering numbers see ahf 005 010 design guide mg80c 56
Harmonic filters are used to reduce mains harmonics 56
How to order vlt 56
Ordering numbers du dt filters 56
Ordering numbers harmonic filters 56
Ordering numbers sine wave filter modules 200 500 v ac 56
Refrigeration drive design guide 56
See also output filter design guide mg90n 56
When using sine wave filters the switching frequency should comply with filter specifications in 14 01 switching frequency 56
How to install 57
How to install vlt 57
Mechanical front views 57
Mechanical installation 57
Refrigeration drive design guide 57
How to install vlt 58
Mechanical dimensions 58
Refrigeration drive design guide 58
How to install vlt 59
Refrigeration drive design guide 59
Accessory bags 60
How to install vlt 60
Refrigeration drive design guide 60
All a b and c enclosures allow side by side installation exception if a ip21 kit is used there has to be a clearance between the enclosures for enclosures a2 a3 a4 b3 b4 and c3 the minimum clearance is 50 mm for c4 it is 75 mm 61
Drill holes in accordance with the measurements given 61
For optimal cooling conditions allow a free air passage above and below the frequency converter see table 5 61
How to install vlt 61
Mechanical mounting 61
Provide screws suitable for the surface on which you want to mount the frequency converter retighten all four screws 61
Refrigeration drive design guide 61
When mounting enclosure sizes a4 a5 b1 b2 b3 b4 c1 c2 c3 and c4 on a non solid back wall the frequency converter must be provided with a back plate a due to insufficient cooling air over the heat sink 61
Caution 62
Field mounting 62
Lifting 62
Safety requirements of mechanical installation 62
Warning 62
Cables general 63
Cables general all cabling must comply with national and local regulations on cable cross sections and ambient temperature copper 60 75 c conductors are recommended 63
Electrical installation 63
For the vl 63
How to install vlt 63
Refrigeration drive 110 250 kw mg16f 63
Refrigeration drive design guide 63
Refrigeration drive fcr 103 high power series mains and motor connections see vl 63
Electrical installation and control cables 64
How to install vlt 64
Refrigeration drive design guide 64
Electrical installation of motor cables 65
Motor cables 65
Enclosure knock outs 66
Removal of knockouts for extra cables 66
Gland conduit entry ip21 nema 1 and ip54 nema12 67
Warning 68
Control cable terminals 69
Control terminals 69
Basic wiring example 70
Electrical installation control cables 71
Final set up and test 72
Switches s201 s202 and s801 72
Additional connections 74
External fan supply 74
Mains disconnectors 74
Parallel connection of motors 74
Relay output 74
Direction of motor rotation 75
Motor thermal protection 75
Installation of misc connections 76
Motor bearing currents 76
Motor insulation 76
Rs 485 bus connection 76
How to connect a pc to the frequency converter 77
Electrical installation emc precautions 78
Emc correct installation 78
High voltage test 78
Mct 31 78
Safety 78
Safety earth connection 78
Warning 78
Use of emc correct cables 80
Earthing of screened armoured control cables 81
Application examples 83
Pulse start stop 83
Start stop 83
Automatic motor adaptation ama 84
Potentiometer reference 84
Smart logic control 84
Smart logic control programming 84
Slc application example 85
Network connection 87
Overview 87
Rs 485 installation and set up 87
Emc precautions 88
Fc protocol overview 88
Frequency converter hardware setup 88
Frequency converter parameter settings for modbus communication 88
Refrigeration drive design guide 88
Relevant national and local regulations for example regarding protective earth connection must be observed 88
Rs 485 installation and set vlt 88
The factory setting for the dip switch is off 88
The fc protocol also referred to as fc bus or standard bus is the danfoss standard fieldbus it defines an access technique according to the master slave principle for communications via a serial bus one master and a maximum of 126 slaves can be connected to the bus the master selects the individual slaves via an address character in the telegram a slave itself can never transmit without first being requested to do so and direct message transfer between the individual slaves is not possible communications occur in the half duplex mode the master function cannot be transferred to another node single master system 88
The following emc precautions are recommended in order to achieve interference free operation of the rs 485 network 88
The following parameters apply to the rs 485 interface fc port 88
The physical layer is rs 485 thus utilizing the rs 485 port built into the frequency converter the fc protocol supports different telegram formats 88
The rs 485 communication cable must be kept away from motor and brake resistor cables to avoid coupling of high frequency noise from one cable to another normally a distance of 200 mm 8 inches is sufficient but keeping the greatest possible distance between the cables is generally recommended especially where cables run in parallel over long distances when crossing is unavoidable the rs 485 cable must cross motor and brake resistor cables at an angle of 90 88
Use the terminator dip switch on the main control board of the frequency converter to terminate the rs 485 bus 88
Content of a character byte 89
Data control byte bcc 89
Fc protocol message framing structure 89
Frequency converter address adr 89
Frequency converter set up 89
Telegram length lge 89
Telegram structure 89
The data field 90
The pke field 90
Bits no 0 11 transfer parameter numbers the function of the relevant parameter is defined in the parameter description in 91
Bits no 12 15 transfer parameter commands from master to slave and return processed slave responses to the master 91
If the command cannot be performed the slave sends this response 0111 command cannot be performed and issues the following fault report in the parameter value pwe 91
Index ind 91
Only the low byte is used as an index 91
Parameter number pnu 91
Parameter value pwe 91
Pwe low hex fault report 91
Refrigeration drive design guide 91
Rs 485 installation and set vlt 91
The index is used together with the parameter number to read write access parameters with an index e g 15 30 alarm log error code the index consists of 2 bytes a low byte and a high byte 91
The parameter value block consists of 2 words 4 bytes and the value depends on the defined command ak the master prompts for a parameter value when the pwe block contains no value to change a parameter value write write the new value in the pwe block and send from the master to the slave 91
When a slave responds to a parameter request read command the present parameter value in the pwe block is transferred and returned to the master if a parameter contains not a numerical value but several data options e g 0 01 language where 0 corresponds to english and 4 corresponds to danish select the data value by entering the value in the pwe block see example selecting a data value serial communication is only capable of reading parameters containing data type 9 text string 91
12 motor speed low limit hz has a conversion factor of 0 to preset the minimum frequency to 10 hz transfer 92
40 fc type to 15 53 power card serial number contain data type 9 for example read the unit size and mains voltage range in 15 40 fc type when a text string is transferred read the length of the telegram is variable and the texts are of different lengths the telegram length is defined in the second byte of the telegram lge when using text transfer the index character indicates whether it is a read or a write command 92
Change 4 14 motor speed high limit hz to 100 hz write the data in eeprom 92
Conversion 92
Data types supported by the frequency converter 92
Examples 92
Examples 0s conversion index 0 0 0s conversion index 2 0ms conversion index 3 0 0ms conversion index 5 92
Pke e19e hex write single word in 4 14 motor speed high limit hz 92
Process words pcd 92
Refrigeration drive design guide 92
Rs 485 installation and set vlt 92
Some parameters contain text that can be written to via the serial bus to write a text via the pwe block set the parameter command ak to f hex the index characters high byte must be 5 92
The block of process words is divided into two blocks of 16 bits which always occur in the defined sequence 92
The value 100 a conversion factor of 0 means that the value transferred is multiplied by 0 the value 100 is therefore read as 10 92
The various attributes of each parameter are displayed in factory setting parameter values are transferred as whole numbers only conversion factors are therefore used to transfer decimals 92
To read a text via the pwe block set the parameter command ak to f hex the index character high byte must be 4 92
Unsigned means that there is no operational sign in the telegram 92
Writing a parameter value 92
Assumptions 93
Modbus rtu overview 93
Reading a parameter value 93
What the user should already know 93
Change the active set up 94
Control the frequency converter s built in relay 94
Frequency converter with modbus rtu 94
Message or if the slave is unable to perform the requested action the slave will construct an error message and send it in response or a time out occurs 94
Modbus rtu message framing structure 94
Modbus rtu message structure 94
Refrigeration drive design guide 94
Reset after a fault trip 94
Rs 485 installation and set vlt 94
Run at a variety of preset speeds 94
Run in reverse 94
Stop of the frequency converter in various ways coast stop quick stop dc brake stop normal ramp stop 94
The bus reference is commonly used for speed control it is also possible to access the parameters read their values and where possible write values to them this permits a range of control options including controlling the setpoint of the frequency converter when its internal pi controller is used 94
The control word allows the modbus master to control several important functions of the frequency converter 94
The controllers are set up to communicate on the modbus network using rtu remote terminal unit mode with each byte in a message containing 2 4 bit hexadecimal characters the format for each byte is shown in table 7 2 94
The frequency converter communicates in modbus rtu format over the built in rs 485 interface modbus rtu provides access to the control word and bus reference of the frequency converter 94
The transmitting device places a modbus rtu message into a frame with a known beginning and ending point this allows receiving devices to begin at the start of the message read the address portion determine which device is addressed or all devices if the message is broadcast and to recognise when the message is completed partial messages are detected and errors set as a result characters for transmission must be in hexadecimal 00 to ff format in each field the frequency converter continuously monitors the network bus also during silent intervals when the first field the address field is received each frequency converter or device decodes it to determine which device is being addressed modbus rtu messages addressed to zero are broadcast messages no response is permitted for broadcast messages a typical message frame is shown in table 7 4 94
To enable modbus rtu on the frequency converter set the following parameters 94
Address field 95
Coil register addressing 95
Crc check field 95
Data field 95
Function field 95
Start stop field 95
Refrigeration drive design guide 96
Rs 485 installation and set vlt 96
Refrigeration drive design guide 97
Rs 485 installation and set vlt 97
Used to specify the index number to be used when accessing an indexed parameter 97
For a full explanation of the structure of an exception code response please refer to 7 function field 98
Function codes supported by modbus rtu 98
How to access parameters 98
How to control the frequency converter 98
Modbus exception codes 98
Modbus exception codes cod e name meaning 98
Modbus rtu supports use of the following function codes in the function field of a message 98
Parameter handling 98
Refrigeration drive design guide 98
Rs 485 installation and set vlt 98
Storage of data 98
The coil 65 decimal determines whether data written to the frequency converter are stored in eeprom and ram coil 65 1 or only in ram coil 65 0 98
The pnu parameter number is translated from the register address contained in the modbus read or write message the parameter number is translated to modbus as 10 x parameter number decimal 98
This section describes codes which can be used in the function and data fields of a modbus rtu message 98
Conversion factor 99
Examples 99
Force write single coil 05 hex 99
Parameter values 99
Read coil status 01 hex 99
Text blocks 99
Description this function reads the contents of holding registers in the slave 100
Example read 3 03 maximum reference register 03030 100
Force write multiple coils 0f hex 100
Query the query message specifies the coil 65 parameter write control to be forced coil addresses start at zero i e coil 65 is addressed as 64 force data 00 00hex off or ff 00hex on 100
Query the query message specifies the starting register and quantity of registers to be read register addresses start at zero i e registers 1 4 are addressed as 0 3 100
Read holding registers 03 hex 100
Refrigeration drive design guide 100
Response the normal response is an echo of the query returned after the coil state has been forced 100
Response the normal response returns the slave address function code starting address and quantity of coils forced 100
Rs 485 installation and set vlt 100
The query message specifies the coils 17 to 32 speed set point to be forced 100
This function forces each coil in a sequence of coils to either on or off when broadcast the function forces the same coil references in all attached slaves 100
Description this function presets a value into a single holding register 101
Description this function presets values into a sequence of holding registers 101
Example write to 1 00 configuration mode register 1000 101
Preset multiple registers 10 hex 101
Preset single register 06 hex 101
Query the query message specifies the register reference to be preset register addresses start at zero i e register 1 is addressed as 0 101
Query the query message specifies the register references to be preset register addresses start at zero i e register 1 is addressed as 0 example of a request to preset two registers set parameter 1 24 738 7 8 a 101
Refrigeration drive design guide 101
Response the normal response is an echo of the query returned after the register contents have been passed 101
Response the register data in the response message are packed as two bytes per register with the binary contents right justified within each byte for each register the first byte contains the high order bits and the second contains the low order bits 101
Rs 485 installation and set vlt 101
Bit 02 0 leads to dc braking and stop set braking current and duration in 2 01 dc brake current and 2 02 dc braking time bit 02 1 leads to ramping 102
Bit 02 dc brake 102
Bit 03 coasting bit 03 0 the frequency converter immediately lets go of the motor the output transistors are shut off and it coasts to a standstill bit 03 1 the frequency converter starts the motor if the other starting conditions are met 102
Bit 04 quick stop bit 04 0 makes the motor speed ramp down to stop set in 3 81 quick stop ramp time 102
Bit 05 hold output frequency bit 05 0 the present output frequency in hz freezes change the frozen output frequency only by means of the digital inputs 5 10 terminal 18 digital input to 5 15 terminal 33 digital input programmed to speed up and slow down 102
Bits 00 01 bits 00 and 01 are used to choose between the four reference values which are pre programmed in 3 10 preset reference according to the following table 102
Control word according to fc profile 8 10 control profile fc profile 102
Explanation of the control bits 102
Fc control profile 102
Make a selection in 8 50 coasting select to define how bit 03 gates with the corresponding function on a digital input 102
Make a selection in 8 56 preset reference select to define how bit 00 01 gates with the corresponding function on the digital inputs 102
Refrigeration drive design guide 102
Response the normal response returns the slave address function code starting address and quantity of registers preset 102
Rs 485 installation and set vlt 102
Status word according to fc profile stw 8 10 control profile fc profile 104
Bus speed reference value 105
General specifications 106
General specifications and troubleshooting 106
General specifications and vlt 106
Refrigeration drive design guide 106
General specifications and vlt 107
Refrigeration drive design guide 107
General specifications and vlt 108
Refrigeration drive design guide 108
General specifications and vlt 109
Refrigeration drive design guide 109
General specifications and vlt 110
Refrigeration drive design guide 110
General specifications and vlt 111
Is a registered danfoss trademark 111
Mg16g102 vl 111
Refrigeration drive design guide 111
Table 8 111
With brake and load sharing 95 4 0 111
General specifications and vlt 112
Is a registered danfoss trademark 111 112
Mains supply 3x525 690 v ac 112
Mg16g102 vl 112
Refrigeration drive design guide 112
Table 8 mains supply 3x525 690 v ac 112
Acoustic noise 118
Efficiency 118
Peak voltage on motor 118
Affect the service life of the motor if the peak voltage is too high especially motors without phase coil insulation are affected if the motor cable is short a few metres the rise time and peak voltage are lower if the motor cable is long 100m the rise time and peak voltage increases 119
Data are measured according to iec 60034 17 cable lengths are in metres 119
Dc link voltage x 1 dc link voltage mains voltage x 1 5 119
General specifications and vlt 119
In motors without phase insulation paper or other insulation reinforcement suitable for operation with voltage supply such as a frequency converter fit a sine wave filter on the output of the frequency converter 119
In the motor voltage before it stabilizes itself at a level depending on the voltage in the intermediate circuit the rise time and the peak voltage 119
Refrigeration drive design guide 119
Rise time increases decreases proportionally with cable length 119
The natural induction causes an overshoot 119
To obtain approximate values for cable lengths and voltages not mentioned below use the following rules of thumb 119
General specifications and vlt 120
Refrigeration drive design guide 120
General specifications and vlt 121
Refrigeration drive design guide 121
General specifications and vlt 122
High power range 122
Refrigeration drive design guide 122
Automatic adaptations to ensure performance 123
Derating for ambient temperature 123
Derating for low air pressure 123
Purpose of derating 123
Special conditions 123
Alarm and status messages 124
Derating for running at low speed 124
Frequency converter once the problem has been rectified only the alarm continues flashing 125
General specifications and vlt 125
No description warning alarm trip alarm trip lock parameter reference 125
Refrigeration drive design guide 125
Alarm word and extended status word bit hex dec alarm word warning word extended status word 126
General specifications and vlt 126
No description warning alarm trip alarm trip lock parameter reference 126
Refrigeration drive design guide 126
66the alarm words warning words and extended status words can be read out via serial bus or optional fieldbus for diagnosis see also par 16 90 16 92 and 16 94 127
Alarm word and extended status word bit hex dec alarm word warning word extended status word 127
Description of alarm word 2 and warning word 2 bit hex dec alarm word 2 warning word 2 127
General specifications and vlt 127
Refrigeration drive design guide 127
Alarm words 128
General specifications and vlt 128
Refrigeration drive design guide 128
General specifications and vlt 129
Refrigeration drive design guide 129
Warning words 129
Extended status words 130
General specifications and vlt 130
Refrigeration drive design guide 130
Warning alarm list 131
Design guide 138
Mg16g102 138
Refrigeration drive 138

Danfoss VLT Refrigeration Drive FC-103P90KT4 [64/138] Electrical installation and control cables

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