Danfoss VLT series Guide

Contents
1. How to Read this Design Guide
5
How to Read this Design Guide 5
Approvals 5
Symbols 6
Abbreviations 6
Definitions 7
2. Introduction to VLT HVAC Drive 13
Disposal Instruction 13
Software Version 13
CE labelling 14
Air humidity 15
Aggressive Environments 15
Vibration and shock 16
VLT HVAC Controls 28
PID 30
General aspects of EMC 41
Galvanic isolation (PELV) 44
Earth leakage current 45
Control with brake function 45
Mechanical brake control 47
Extreme running conditions 47
3. VLT HVAC Selection 49
Electrical Data 49
General Specifications 54
Peak Voltage on Motor 60
Efficiency 61
Peak Voltage on Motor 62
Special Conditions 63
Purpose of derating 63
Automatic adaptations to ensure performance 65
Mechanical Dimension 66
Options and Accessories 68
4. How to Order 79
Ordering form 79
Type Code String 80
Ordering Numbers 81
VLT®HVAC Drive Design Guide Contents
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5. How to Install 83
Mechanical Installation 83
Accessory Bag 83
Electrical Installation 85
Removal of Knockouts for Extra Cables 85
Access to Control Terminals 93
Electrical Installation, Control Terminals 94
Final Set-Up and Test 97
Additional Connections 99
Installation of misc. connections 103
Safety 106
EMC-correct Installation 106
Mains supply interference/Harmonics 110
Residual Current Device 110
6. Application Examples 111
7. RS-485 Installation and Set-up 121
RS-485 Installation and Set-up 121
FC Protocol Overview 124
Network Configuration 124
FC Protocol Message Framing Structure 126
Examples 133
Modbus RTU Overview 133
VLT HVAC with Modbus RTU 135
Modbus RTU Message Framing Structure 135
How to Access Parameters 139
Examples 140
Danfoss FC Control Profile 146
8. Troubleshooting 153
Status messages 153
Alarms and warnings 153
Index
160
Contents VLT®HVAC Drive Design Guide
2MG.11.B2.02 - VLT®is a registered Danfoss trademark

Contents | Illustration
Illustration 2.1: 36
Illustration 2.2: Galvanic isolation 44
Illustration 3.1: Derating of I 63
Illustration 3.2: Derating of I 63
Illustration 3.3: Derating of I 63
Illustration 3.4: Derating of I 63
Illustration 3.5: Derating of I 64
Illustration 3.6: Derating of I 64
Illustration 3.7: Derating of I 64
Illustration 3.8: Derating of I 64
Illustration 3.9: Derating of output current versus altitude at T 64
Illustration 3.10: Principle Diagram 69
Illustration 3.11: Connection to 24 V back-up supplier (A2-A3). 73
Illustration 3.12: Connection to 24 V back-up supplier (A5-C2). 73
Illustration 3.13: Principle diagram for Analog I/O mounted in frequency converter. 74
Illustration 5.1: How to connect to mains and earthing (A2 and A3 enclosure). 86
Illustration 5.2: How to connect to mains and earthing (A5 enclosure). 86
Illustration 5.3: How to connect to mains and earthing (B1 and B2 enclosure). 86
Illustration 5.4: How to connect to mains and earthing (C1 and C2 enclosure). 86
Illustration 5.5: Terminals for mains and earthing. 87
Illustration 5.6: How to connect to mains and earthing with disconnector (A5 enclosure).
87
Illustration 5.7: 88
Illustration 5.8: Motor connection for enclosures A2 and A3 88
Illustration 5.9: Motor connection for 88
Illustration 5.10: Motor connection for enclosure B1 and B2 89
Illustration 5.11: Motor connection for enclosure C1 and C2 89
Illustration 5.12: A1, A2 and A3 enclosures 93
Illustration 5.13: A5, B1, B2, C1 and C2 enclosures 93
Illustration 5.14: Control terminals (all enclosures) 93
Illustration 5.15: Terminal 37 available with Safe Stop Function only! 94
Illustration 5.16: Terminal 37: Safe Stop input available with Safe Stop Function only! 95
Illustration 5.17: Terminals for relay connection 100
Illustration 5.18: USB connection. 104
Illustration 5.19: EMC-correct electrical installation of an IP20 frequency converter. 107
Illustration 6.1: Terminal 37: Available only with Safe Stop Function! 111
Illustration 6.2: Terminal 37: Available only with Safe Stop Function! 111
Illustration 7.1: Network Terminal Connection 122
VLT®HVAC Drive Design Guide Contents
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Contents | Table
Table 2.1: EMC Test Results (Emission, Immunity) 42
Table 2.2: Immunity 43
Table 4.1: Type code description. 80
Table 5.1: Tightening of terminals. 85
Table 5.2: Non UL fuses 200 V to 500 V 91
Table 5.3: UL fuses 200 - 240 V 92
Table 5.4: UL fuses 380 - 600 V 92
Table 8.1: Alarm/Warning code list 154
Table 8.2: Description of Alarm Word, Warning Word and Extended Status Word 155
Contents VLT®HVAC Drive Design Guide
4MG.11.B2.02 - VLT®is a registered Danfoss trademark

1. How to Read this Design Guide
This Design Guide will introduce all aspects of your VLT HVAC Drive.
Available literature for VLT HVAC Drive
-The VLT
®
HVAC Drive Operating Instructions MG.11.AX.YY provide the neccessary in-
formation for getting the drive up and running.
-The VLT
®
HVAC Drive Design Guide MG.11.BX.YY entails all technical information about
the drive and customer design and applications.
-The VLT
®
HVAC Drive Programming Guide MG.11.CX.YY provides information on how to
programme and includes complete parameter descriptions.
X = Revision number
YY = Language code
Danfoss Drives technical literature is also available online at www.danfoss.com/BusinessAreas/
DrivesSolutions/Documentations/Technical+Documentation.
1.1.1. Approvals
VLT®HVAC Drive Design Guide 1. How to Read this Design Guide
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1.1.2. Symbols
Symbols used in this Design Guide.
NB!
Indicates something to be noted by the reader.
Indicates a general warning.
Indicates a high-voltage warning.
*Indicates default setting
1.1.3. Abbreviations
Alternating current AC
American wire gauge AWG
Ampere/AMP A
Automatic Motor Adaptation AMA
Current limit ILIM
Degrees Celcius °C
Direct current DC
Drive Dependent D-TYPE
Electro Magnetic Compatibility EMC
Electronic Thermal Relay ETR
Frequency Converter FC
Gram g
Hertz Hz
Kilohertz kHz
Local Control Panel LCP
Meter m
Milli Henry Inductance mH
Milliampere mA
Millisecond ms
Minute min
Motion Control Tool MCT
Nanofarad nF
Newton Meters Nm
Nominal motor current IM,N
Nominal motor frequency fM,N
Nominal motor power PM,N
Nominal motor voltage UM,N
Parameter par.
Protective Extra Low Voltage PELV
Printed Circuit Board PCB
Rated Inverter Output Current IINV
Revolutions Per Minute RPM
Second s
Torque limit TLIM
Volts V
1. How to Read this Design Guide VLT®HVAC Drive Design Guide
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1.1.4. Definitions
Drive:
I
VLT,MAX
The maximum output current.
I
VLT,N
The rated output current supplied by the frequency converter.
U
VLT, MAX
The maximum output voltage.
Input:
Control command
You can start and stop the connected motor by
means of LCP and the digital inputs.
Functions are divided into two groups.
Functions in group 1 have higher priority than
functions in group 2.
Group 1 Reset, Coasting stop, Reset and Coasting
stop, Quick-stop, DC braking, Stop and the
"Off" key.
Group 2 Start, Pulse start, Reversing, Start reversing,
Jog and Freeze output
Motor:
f
JOG
The motor frequency when the jog function is activated (via digital terminals).
f
M
The motor frequency.
f
MAX
The maximum motor frequency.
f
MIN
The minimum motor frequency.
f
M,N
The rated motor frequency (nameplate data).
I
M
The motor current.
I
M,N
The rated motor current (nameplate data).
n
M,N
The rated motor speed (nameplate data).
P
M,N
The rated motor power (nameplate data).
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T
M,N
The rated torque (motor).
U
M
The instantaneous motor voltage.
U
M,N
The rated motor voltage (nameplate data).
Break-away torque
η
VLT
The efficiency of the frequency converter is defined as the ratio between the power output and
the power input.
Start-disable command
A stop command belonging to the group 1 control commands - see this group.
Stop command
See Control commands.
References:
Analog Reference
A signal transmitted to the analog inputs 53 or
54, can be voltage or current.
Bus Reference
A signal transmitted to the serial communica-
tion port (FC port).
Preset Reference
A defined preset reference to be set from -100% to +100% of the reference range. Selection of
eight preset references via the digital terminals.
Pulse Reference
A pulse frequency signal transmitted to the digital inputs (terminal 29 or 33).
Ref
MAX
Determines the relationship between the reference input at 100% full scale value (typically 10 V,
20mA) and the resulting reference. The maximum reference value set in par. 3-03.
Ref
MIN
Determines the relationship between the reference input at 0% value (typically 0V, 0mA, 4mA)
and the resulting reference. The minimum reference value set in par. 3-02.
1. How to Read this Design Guide VLT®HVAC Drive Design Guide
8MG.11.B2.02 - VLT®is a registered Danfoss trademark
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Miscellaneous:
Analog Inputs
The analog inputs are used for controlling various functions of the frequency converter.
There are two types of analog inputs:
Current input, 0-20 mA and 4-20 mA
Voltage input, 0-10 V DC.
Analog Outputs
The analog outputs can supply a signal of 0-20 mA, 4-20 mA, or a digital signal.
Automatic Motor Adaptation, AMA
AMA algorithm determines the electrical parameters for the connected motor at standstill.
Brake Resistor
The brake resistor is a module capable of absorbing the brake power generated in regenerative
braking. This regenerative braking power increases the intermediate circuit voltage and a brake
chopper ensures that the power is transmitted to the brake resistor.
CT Characteristics
Constant torque characteristics used for screw and scroll refrigeration compressors.
Digital Inputs
The digital inputs can be used for controlling various functions of the frequency converter.
Digital Outputs
The drive features two Solid State outputs that can supply a 24 V DC (max. 40 mA) signal.
DSP
Digital Signal Processor.
Relay Outputs:
The frequency converter drive features two programmable Relay Outputs.
ETR
Electronic Thermal Relay is a thermal load calculation based on present load and time. Its purpose
is to estimate the motor temperature.
GLCP:
Graphical Local Control Panel (LCP102)
Initialising
If initialising is carried out (par. 14-22), the programmable parameters of the frequency converter
return to their default settings.
Intermittent Duty Cycle
An intermittent duty rating refers to a sequence of duty cycles. Each cycle consists of an on-load
and an off-load period. The operation can be either periodic duty or none-periodic duty.
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LCP
The Local Control Panel (LCP) makes up a complete interface for control and programming of the
frequency converter. The control panel is detachable and can be installed up to 3 metres from the
frequency converter, i.e. in a front panel by means of the installation kit option.
The Local Control Panel is available in two versions:
-Numerical LCP101 (NLCP)
-Graphical LCP102 (GLCP)
lsb
Least significant bit.
MCM
Short for Mille Circular Mil, an American measuring unit for cable cross-section. 1 MCM 0.5067≡
mm
2
.
msb
Most significant bit.
NLCP
Numerical Local Control Panel LCP101
On-line/Off-line Parameters
Changes to on-line parameters are activated immediately after the data value is changed. Changes
to off-line parameters are not activated until you enter [OK] on the LCP.
PID Controller
The PID controller maintains the desired speed, pressure, temperature, etc. by adjusting the out-
put frequency to match the varying load.
RCD
Residual Current Device.
Set-up
You can save parameter settings in four Set-ups. Change between the four parameter Set-ups
and edit one Set-up, while another Set-up is active.
SFAVM
Switching pattern called S tator F lux oriented A synchronous V ector M odulation (par. 14-00).
Slip Compensation
The frequency converter compensates for the motor slip by giving the frequency a supplement
that follows the measured motor load keeping the motor speed almost constant..
Smart Logic Control (SLC)
The SLC is a sequence of user defined actions executed when the associated user defined events
are evaluated as true by the SLC.
Thermistor:
A temperature-dependent resistor placed where the temperature is to be monitored (frequency
converter or motor).
1. How to Read this Design Guide VLT®HVAC Drive Design Guide
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