Danfoss VLT Midi Drive FC 280 User manual

Operating Guide
VLT® Midi Drive FC 280
with Functional Safety over Fieldbus
vlt-drives.danfoss.com

1
1.1
1.2
1.3
1.4
1.4.1
1.4.2
1.4.3
1.4.4
1.5
1.6
1.7
2
2.1
2.2
2.3
3
3.1
3.1.1
3.1.2
3.1.3
3.2
3.3
3.3.1
3.3.2
3.3.3
3.3.3.1
3.3.3.2
3.3.3.3
3.3.3.4
4
4.1
4.2
4.3
4.4
Contents
Introduction 9
Purpose of this Operating Guide 9
Additional Resources 9
Document and Software Version 9
Product Overview 9
Intended Use 9
Block Diagram of the Drive 10
Enclosure Sizes and Power Ratings 11
Safety Functions 11
Approvals and Certifications 11
Applied Standards and Compliance for Safety Functions 12
Disposal 12
Safety 13
Safety Symbols 13
Qualified Personnel 13
Safety Precautions 13
Mechanical Installation 16
Unpacking 16
Items Supplied 16
Identifying the Drive with Ethernet-based Safety Functions 17
Storage 17
Installation Environment 17
Mounting 17
Cooling 17
Lifting 17
Mounting 17
Side-by-side Installation 17
Horizontal Mounting 18
Bus Decoupling Kit 18
Mounting the Bus Decoupling Kit 18
Electrical Installation 21
Safety Instructions 21
EMC-compliant Installation 21
Grounding 22
Wiring Schematic 23
AQ381425076031en-000101/130R1223 | 3Danfoss A/S © 2022.02
Contents
VLT® Midi Drive FC 280
Operating Guide

4.5
4.6
4.7
4.7.1
4.8
4.8.1
4.9
4.9.1
4.9.2
4.9.2.1
4.9.3
4.9.4
4.9.5
4.9.6
4.10
5
5.1
5.1.1
5.2
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.4.1
5.3.4.2
5.3.5
5.3.5.1
5.3.5.2
5.3.5.3
5.3.5.4
5.3.6
5.3.7
5.3.8
5.3.8.1
5.3.8.2
5.3.8.3
Control Wiring Access 25
Examples of Mains, Motor, and Grounding Connection 25
Connecting the Motor 27
Grounding the Cable Shield 27
Connecting AC Mains 28
Connecting the Drive to Mains 28
Control Wiring 29
Control Terminal Types 29
Wiring to Control Terminals 30
Wiring 30
Enabling Motor Operation (Terminal 27) 30
Mechanical Brake Control 31
USB Data Communication 32
Serial Communication 32
Installation Check List 33
Commissioning 35
Safety Instructions 35
Before Applying Power 35
Applying Power 35
Local Control Panel Operation 35
Introduction 35
Numerical Local Control Panel 36
The Right-key Function on NLCP 38
Quick Menu on NLCP 38
Operating Quick Menu 38
Quick Menu Structure 39
Main Menu on NLCP 39
Operating Main Menu 39
Continuous Parameters 40
Enumerated Parameters 41
Array Parameters 42
Graphical Local Control Panel 42
Parameter Settings 45
Changing Parameter Settings with GLCP 45
Introduction 45
Changing Parameter Settings 45
View Changes 45
AQ381425076031en-000101/130R12234 | Danfoss A/S © 2022.02
Contents
VLT® Midi Drive FC 280
Operating Guide

5.3.9
5.3.10
5.3.10.1
5.3.10.2
5.3.10.3
5.4
5.4.1
5.4.1.1
5.4.1.2
5.4.2
5.4.2.1
5.4.2.2
5.4.2.3
5.4.2.4
5.4.3
5.4.3.1
5.4.3.2
5.5
5.6
5.7
5.8
5.9
5.9.1
5.9.2
5.9.3
5.9.4
5.9.5
5.9.6
5.9.7
5.9.8
6
6.1
6.2
6.2.1
6.2.2
6.2.3
6.2.4
Backing-up/Downloading Parameters 45
Restoring Default Settings with LCP 46
Introduction 46
Recommended Initialization 46
Manual Initialization 46
Basic Programming 46
Asynchronous Motor Set-up 46
Setting Up Asynchronous Motor 46
Application-specific Adjustment When Running VVC+ 47
PM Motor Set-up in VVC+ 47
Initial Programming Steps 47
Programming Motor Data 47
Testing Motor Operation 48
Parking 48
Automatic Motor Adaptation (AMA) 48
Introduction 48
Running AMA via LCP 49
Checking Motor Rotation 49
Checking Encoder Rotation 49
Testing Local-control 49
System Start-up 50
Memory Module 50
Memory Module Overview 50
Synchronizing Drive Data to a New Memory Module (Create Drive Backup) 51
Copying Data to Another Drive 51
Copying Data to Multiple Drives 51
Transferring the Firmware Information 52
Backing Up Parameter Changes to Memory Module 52
Erasing Data 52
Transfer Performance and Indications 52
Safety Functions 54
Introduction 54
System Overview 55
Safety Function Architecture 55
Safe State 56
Internal and External Fault 56
Fault Reaction 56
AQ381425076031en-000101/130R1223 | 5Danfoss A/S © 2022.02
Contents
VLT® Midi Drive FC 280
Operating Guide

6.2.5
6.2.5.1
6.2.5.2
6.3
6.3.1
6.3.1.1
6.3.1.2
6.3.1.3
6.3.1.4
6.3.2
6.3.2.1
6.3.2.2
6.3.2.3
6.3.2.4
6.3.2.5
6.3.2.6
6.4
6.4.1
6.4.2
6.4.3
6.5
6.5.1
6.5.2
6.5.2.1
6.5.2.2
6.5.2.3
6.5.2.4
6.5.2.5
6.5.2.5.1
6.5.2.5.2
6.6
6.6.1
6.6.2
6.6.3
6.6.4
6.6.5
6.7
6.7.1
Recovery from Safe State 56
Recovery from Safe Function Triggered Normally 56
Recovery from Safety Events 57
Safety Functions 57
Safe Torque Off (STO) 57
STO Triggered by DI 58
STO Triggered by Fieldbus 58
Exit STO 59
Restart Behavior 59
Safe Stop 1 Time Controlled (SS1-t) 59
SS1-t Triggered by DI 61
SS1-t Triggered by Fieldbus 61
SS1-t Timer Start 62
SS1-t Timing Quit 62
Safe State of SS1-t 62
Timing Precision 62
Safety Digital Input 62
Valid Voltage 62
Debouncing 62
Discrepancy Tolerance 63
Safety Fieldbus 63
PROFIsafe 63
PROFIsafe System 64
The PROFIsafe Frame 64
Parameterization for PROFIsafe 65
PROFIsafe Watchdog Time 66
PROFIsafe Safety Function Response Time (SFRT) 67
PROFIdrive on PROFIsafe 67
PROFIsafe Control Word 67
PROFIsafe Status Word 68
Installation 69
Safe Input Terminals 69
Jumper for Safety Bypass 69
Connect with Dual-contactor Device 70
Connect with P-M Mode 71
Daisy Chain Connection 72
Configuration 73
Configuration with MCT 10 73
AQ381425076031en-000101/130R12236 | Danfoss A/S © 2022.02
Contents
VLT® Midi Drive FC 280
Operating Guide

6.7.1.1
6.7.1.2
6.7.1.3
6.7.1.3.1
6.7.1.4
6.7.1.4.1
6.7.1.4.2
6.7.1.5
6.7.1.6
6.7.2
6.7.2.1
6.7.3
6.8
6.9
6.9.1
6.9.2
6.9.3
6.9.3.1
6.9.4
6.10
6.10.1
6.10.2
6.10.3
6.11
6.11.1
6.11.2
6.12
6.13
7
7.1
7.2
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
Safety Functions Configuration 73
Commissioning the Safety Option 74
Password Protection 81
Resetting the Password 81
Retrieving Safety Option Status 82
Status Bits for Safety Option Status 82
Status Bits for Safety Option Status 2 83
Copying Safe Parameter Set-up 84
Password Protection LCP Copy and Safe Parameter Mismatch 84
Configuring PROFIsafe with Siemens TIA Portal 88
Configuring the Hardware 88
Programming Safety Functions with Siemens TIA Portal 90
Reset Function 90
Commissioning and Validation 91
Safety Guidelines 91
Commissioning Requirements 91
Commissioning Test 92
Performing the Commissioning Test 92
Commissioning Test Report 92
Operation and Maintenance 94
Safe Operation 94
Firmware Update and Modification 94
Troubleshooting 94
Safety Technical Data 95
Condition and Assumption 95
Safety Technical Data 95
Safety-related Parameters 97
Declarations and Certifications 101
Application Examples 102
Introduction 102
Application Examples 102
AMA 102
Speed 103
Start/Stop 104
External Alarm Reset 105
Motor Thermistor 106
SLC 106
AQ381425076031en-000101/130R1223 | 7Danfoss A/S © 2022.02
Contents
VLT® Midi Drive FC 280
Operating Guide

8
8.1
8.2
8.3
8.4
8.4.1
8.4.2
8.5
9
9.1
9.2
9.3
9.3.1
9.3.2
9.4
9.5
9.6
9.6.1
9.6.2
9.6.3
9.6.4
9.6.5
9.6.6
9.6.7
9.6.8
9.6.9
9.6.10
9.6.11
9.6.12
9.7
9.8
9.8.1
9.8.2
9.9
10
10.1
10.2
Maintenance, Diagnostics, and Troubleshooting 108
Maintenance and Service 108
Warning and Alarm Types 108
Warning and Alarm Displays 108
List of Warning and Alarms 109
Warning and Alarm Code List 109
Alarm Words, Warning Words, and Extended Status Words 112
Troubleshooting 114
Specifications 117
Electrical Data 117
Mains Supply 120
Motor Output and Motor Data 120
Motor Output (U, V, W) 120
Torque Characteristics 120
Ambient Conditions 121
Cable Specifications 121
Control Input/Output and Control Data 122
Digital Inputs 122
Safety Inputs 122
Analog Inputs 122
Pulse Inputs 123
Digital Outputs 123
Control Card, 24 V DC Output 123
Control Card, +10 V DC Output 124
Control Card, RS485 Serial Communication 124
Control Card, USB Serial Communication 124
Relay Outputs 124
Control Card Performance 124
Control Characteristics 124
Connection Tightening Torques 125
Fuses and Circuit Breakers 125
Introduction 125
Recommendation of Fuses 125
Enclosure Sizes, Power Ratings, and Dimensions 127
Appendix 131
Symbols and Abbreviations 131
Conventions 132
AQ381425076031en-000101/130R12238 | Danfoss A/S © 2022.02
Contents
VLT® Midi Drive FC 280
Operating Guide

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1 Introduction
1.1 Purpose of this Operating Guide
This Operating Guide provides information for safe installation and commissioning of the AC drive. It is intended for use by qualified
personnel.
Read and follow the instructions to use the drive safely and professionally.
Pay particular attention to the safety instructions and general warnings. Always keep this Operating Guide with the drive.
VLT®is a registered trademark for Danfoss A/S.
1.2 Additional Resources
Other resources are available to understand advanced drive functions, programming and maintenance.
The VLT® Midi Drive FC 280 Programming Guide provides information on how to program and includes complete parameter
descriptions.
The VLT® Midi Drive FC 280 Design Guide provides detailed information about the design and applications of the drive.
Supplementary publications and manuals are available from the Danfoss website.
1.3 Document and Software Version
This manual is regularly reviewed and updated. All suggestions for improvement are welcome.
The original language of this manual is English.
Table 1: Document and Software Version
Edition
Remarks
Software version
AQ381425076031, version 0101
First edition.
2.0
1.4 Product Overview
1.4.1 Intended Use
The drive is an electronic motor controller intended for:
Regulation of motor speed in response to system feedback or to remote commands from external controllers. A power drive
system consists of the drive, the motor, and equipment driven by the motor.
System and motor status surveillance.
The drive can also be used for motor overload protection.
Depending on the configuration, the drive can be used in standalone applications or form part of a larger appliance or installation.
The drive is allowed for use in residential, industrial, and commercial environments in accordance with local laws and standards.
NOTICE
In a residential environment, this product can cause radio interference, in which case supplementary mitigation measures can be
required.
Foreseeable misuse
Do not use the drive in applications which are non-compliant with specified operating conditions and environments. Ensure com-
pliance with the conditions specified in chapter Specifications.
AQ381425076031en-000101 / 130R1223 | 9Danfoss A/S © 2022.02
Introduction
VLT® Midi Drive FC 280
Operating Guide

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•
1.4.2 Block Diagram of the Drive
M
7
63
4
5
2
1
8
10
e30be200.12
M
7
63
45
2
1
8
9
T2/T4
S2
Illustration 1: Block Diagram of the Drive
Table 2: Functions of Each Component
Area
Component
Functions
1
Mains input
AC mains supply to the drive.
2
Rectifier
The rectifier bridge converts the AC input to DC current to supply inverter power.
3
DC bus
Intermediate DC-bus circuit handles the DC current.
4
DC reactor
Filters the intermediate DC circuit current.
Provides mains transient protection.
Reduces the root mean square (RMS) current.
Raises the power factor reflected back to the line.
Reduces harmonics on the AC input.
5
Capacitor
bank
Stores the DC power.
Provides ride-through protection for short power losses.
6
Inverter
Converts the DC into a controlled PWM AC waveform for a controlled variable output to the motor.
7
Output to
motor
Regulated 3-phase output power to the motor.
AQ381425076031en-000101 / 130R122310 | Danfoss A/S © 2022.02
Introduction
VLT® Midi Drive FC 280
Operating Guide

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•
•
•
•
•
•
Area
Component
Functions
8
Control cir-
cuitry
Input power, internal processing, output, and motor current are monitored to provide efficient opera-
tion and control.
User interface and external commands are monitored and performed.
Status output and control can be provided.
9
PFC
Power factor correction changes the waveform of current which is drawn by the drive to improve the
power factor.
10
Brake chop-
per
Brake chopper is used in the DC intermediate circuit to control DC voltage when the load feeds ener-
gy back.
1.4.3 Enclosure Sizes and Power Ratings
For enclosure sizes and power ratings of the drives, refer to 9.9 Enclosure Sizes, Power Ratings, and Dimensions.
1.4.4 Safety Functions
The following safety functions are integrated in this drive according to EN IEC 61800-5-2:
Safe Torque Off (STO).
Safe Stop 1 time controlled (SS1-t).
See Chapter 6 Safety Functions for details about the installation, configuration, commissioning, maintenance, and technical data.
1.5 Approvals and Certifications
089
For compliance with the European Agreement concerning International Carriage of Dangerous Goods by Inland Waterways (ADN),
refer to the chapter ADN-compliant Installation in the VLT® Midi Drive FC 280 Design Guide.
The drive complies with UL 508C thermal memory retention requirements. For more information, refer to the chapter Motor Ther-
mal Protection in the VLT® Midi Drive FC 280 Design Guide.
AQ381425076031en-000101 / 130R1223 | 11Danfoss A/S © 2022.02
Introduction
VLT® Midi Drive FC 280
Operating Guide

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•
1.6 Applied Standards and Compliance for Safety Functions
Safe Torque Off (STO)
The STO function is designed and approved according to the following standards:
EN IEC 61508, SIL3
EN IEC 61800-5-2, SIL3
EN IEC 62061, SILCL of SIL3
EN ISO 13849-1, Category 3, PL e
Safe Stop 1 time controlled (SS1-t)
The SS1-t function is designed and approved according to the following standards:
EN IEC 61508, SIL3
EN IEC 61800-5-2, SIL3
EN IEC 62061, SILCL of SIL3
EN ISO 13849-1, Category 3, PL e
1.7 Disposal
Do not dispose of equipment containing electrical components together with domestic waste.
Collect it separately in accordance with local and currently valid legislation.
AQ381425076031en-000101 / 130R122312 | Danfoss A/S © 2022.02
Introduction
VLT® Midi Drive FC 280
Operating Guide

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2 Safety
2.1 Safety Symbols
The following symbols are used in this guide:
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates information considered important, but not hazard-related (for example, messages relating to property damage).
2.2 Qualified Personnel
Correct and reliable transport, storage, installation, operation, and maintenance are required for the trouble-free and safe operation
of the drive. Only qualified personnel are allowed to install and operate this equipment.
Qualified personnel are defined as trained staff, who are authorized to install, commission, and maintain equipment, systems, and
circuits in accordance with pertinent laws and regulations. Also, the qualified personnel must be familiar with the instructions and
safety measures described in this manual.
2.3 Safety Precautions
WARNING
HAZARDOUS VOLTAGE
AC drives contain hazardous voltage when connected to the AC mains or connected on the DC terminals. Failure to perform
installation, start-up, and maintenance by qualified personnel can result in death or serious injury.
Only qualified personnel must perform installation, start-up, and maintenance.
WARNING
UNINTENDED START
When the drive is connected to AC mains, DC supply, or load sharing, the motor may start at any time. Unintended start during
programming, service, or repair work can result in death, serious injury, or property damage. Start the motor with an external
switch, a fieldbus command, an input reference signal from the local control panel (LCP), via remote operation using MCT 10
software, or after a cleared fault condition.
Disconnect the drive from the mains.
Press [Off/Reset] on the LCP before programming parameters.
Ensure that the drive is fully wired and assembled when it is connected to AC mains, DC supply, or load sharing.
AQ381425076031en-000101 / 130R1223 | 13Danfoss A/S © 2022.02
Safety
VLT® Midi Drive FC 280
Operating Guide

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WARNING
DISCHARGE TIME
The drive contains DC-link capacitors, which can remain charged even when the drive is not powered. High voltage can be
present even when the warning indicator lights are off.
Failure to wait the specified time after power has been removed before performing service or repair work could result in death or
serious injury.
Stop the motor.
Disconnect AC mains, permanent magnet type motors, and remote DC-link supplies, including battery back-ups, UPS, and
DC-link connections to other drives.
Wait for the capacitors to discharge fully. The minimum waiting time is specified in the table Discharge time and is also visible
on the nameplate on the top of the drive.
Before performing any service or repair work, use an appropriate voltage measuring device to make sure that the capacitors
are fully discharged.
Table 3: Discharge Time
Voltage [V]
Power range [kW (hp)]
Minimum waiting time (minutes)
200–240
0.37–3.7 kW (0.5–5 hp)
4
380–480
0.37–7.5 kW (0.5–10 hp)
4
11–22 kW (15–30 hp)
15
WARNING
ELECTRICAL SHOCK HAZARD - LEAKAGE CURRENT HAZARD >3.5 MA
Leakage currents exceed 3.5 mA. Failure to connect the drive properly to protective earth (PE) can result in death or serious in-
jury.
Ensure reinforced protective earthing conductor according to IEC 60364-5-54 cl. 543.7 or according to local safety regula-
tions for high touch current equipment. The reinforced protective earthing of the drive can be done with:
a PE conductor with a cross-section of at least 10 mm2(8 AWG) Cu or 16 mm2(6 AWG) Al.
an extra PE conductor of the same cross-sectional area as the original PE conductor as specified by IEC 60364-5-54 with a
minimum cross-sectional area of 2.5 mm2(14 AWG) (mechanical protected) or 4 mm2(12 AWG) (not mechanical protected).
a PE conductor completely enclosed with an enclosure or otherwise protected throughout its length against mechanical
damage.
a PE conductor part of a multi-conductor power cable with a minimum PE conductor cross-section of 2.5 mm2(14 AWG)
(permanently connected or pluggable by an industrial connector. The multi-conductor power cable shall be installed with an
appropriate strain relief).
NOTE: In IEC/EN 60364-5-54 cl. 543.7 and some application standards (for example IEC/EN 60204-1), the limit for requiring
reinforced protective earthing conductor is 10 mA leakage current.
WARNING
EQUIPMENT HAZARD
Contact with rotating shafts and electrical equipment can result in death or serious injury.
Ensure that only trained and qualified personnel perform installation, start-up, and maintenance.
Ensure that electrical work conforms to national and local electrical codes.
Follow the procedures in this guide.
AQ381425076031en-000101 / 130R122314 | Danfoss A/S © 2022.02
Safety
VLT® Midi Drive FC 280
Operating Guide

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CAUTION
INTERNAL FAILURE HAZARD
An internal failure in the drive can result in serious injury when the drive is not properly closed.
Ensure that all safety covers are in place and securely fastened before applying power.
AQ381425076031en-000101 / 130R1223 | 15Danfoss A/S © 2022.02
Safety
VLT® Midi Drive FC 280
Operating Guide

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3 Mechanical Installation
3.1 Unpacking
3.1.1 Items Supplied
Items supplied vary according to product configuration.
Make sure that the items supplied and the information on the nameplate correspond to the order confirmation.
Check the packaging and the drive visually for damage caused by inappropriate handling during shipment. File any claim for
damage with the carrier. Retain damaged parts for clarification.
e30be616.15
VLT
MADE IN
DENMARK
T/C: FC-280PK37T4E20H1BXCXXXSXXXXAX
0.37kW 0.5HP
IN: 3x380-480V 50/60Hz, 1.2/1.0A
OUT: 3x0-Vin 0-500Hz, 1.2/1.1A
IP20 SIL3 PL.e
P/N: 134U2184 S/N: 000000G000
Midi Drive
www.danfoss.com
CAUTION / ATTENTION:
WARNING / AVERTISSEMENT:
See manual for special condition/mains fuse
Voir manual de conditions speciales/fusibles
Stored charge, wait 4 min.
Charge r é siduelle, attendez 4 min.
21
1
2
4
3
5
11
20
19
18
16
15
13
10
8
9
6
17
RUS LISTED
www.tuv.com
ID 0600000000
Danfoss A/S, 6430 Nordborg, Denmark
12
7
SIL3
E358 502
See manual for mains fuse
IND.CON.EQ
5AF3
14
22
Illustration 2: Product Nameplate (Example)
1
Product logo
2
Product name
3
Disposal
4
CE mark
5
Morocco
6
Serial number
7
TÜV logo
8
UkrSEPRO logo
9
Barcode
10
Country of origin
11
UL reference
12
EAC logo
13
RCM logo
14
Reference to enclosure type
15
Warning specifications
16
UL logo
17
IP rating
18
Output voltage, frequency, and current (at low/high
voltages)
19
Input voltage, frequency, and current (at low/high
voltages)
20
Power rating
21
Ordering number
22
Type code
NOTICE
Do not remove the nameplate from the drive (loss of warranty).
For more information of the type code, refer to the chapter Type Code in the VLT® Midi DriveFC 280 Design Guide.
AQ381425076031en-000101 / 130R122316 | Danfoss A/S © 2022.02
Mechanical Installation
VLT® Midi Drive FC 280
Operating Guide

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1.
2.
3.
4.
-
3.1.2 Identifying the Drive with Ethernet-based Safety Functions
To identify whether the drive is equipped with the Ethernet-based safety functions, check the following:
The drive's type code on the product label contains “SFS1” at bits 24~27, for example:
- P
4
e30bu891.10
B C A X X X X
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 30 22 21 23 27 25 24 26 28 29
F0 C 2 1 X L
Pos.
SFS1
H
0
E
T
K 3 7
8
2
Illustration 3: Type Code Example for Drive with Ethernet-based Safety Functions
The drive has terminal 39.
3.1.3 Storage
Ensure that the requirements for storage are fulfilled. Refer to 9.4 Ambient Conditions for further details.
3.2 Installation Environment
NOTICE
REDUCED LIFETIME
In environments with airborne liquids, particles, or corrosive gases, ensure that the IP/Type rating of the equipment matches the
installation environment. Failure to meet requirements for ambient conditions can reduce lifetime of the drive.
Ensure that requirements for air humidity, temperature, and altitude are met.
Vibration and shock
The drive complies with requirements for units mounted on the walls and floors of production premises, and in panels bolted to
walls or floors. For detailed ambient conditions, refer to 9.4 Ambient Conditions.
3.3 Mounting
3.3.1 Cooling
NOTICE
Improper mounting can result in overheating and reduced performance.
Ensure 100 mm (3.9 in) of top and bottom clearance for air cooling.
3.3.2 Lifting
To determine a safe lifting method, check the weight of the unit, see 9.9 Enclosure Sizes, Power Ratings, and Dimensions.
Ensure that the lifting device is suitable for the task.
If necessary, plan for a hoist, crane, or forklift with the appropriate rating to move the unit.
For lifting, use hoist rings on the unit, when provided.
3.3.3 Mounting
Procedure
Ensure that the strength of the mounting location supports the unit weight.
Place the unit as near to the motor as possible. Keep the motor cables as short as possible.
Mount the unit vertically on a solid flat surface.
Use the slotted mounting holes on the unit for wall mount, when provided. For dimensions of mounting holes, see 9.9
Enclosure Sizes, Power Ratings, and Dimensions.
3.3.3.1 Side-by-side Installation
All VLT® Midi Drive FC 280 units can be installed side by side in vertical or horizontal position. The units do not require extra ventila-
tion on the side.
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Mechanical Installation
VLT® Midi Drive FC 280
Operating Guide

-
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Illustration 4: Side-by-side Installation
NOTICE
RISK OF OVERHEATING
If IP21 conversion kit is used, mounting the units side by side could lead to overheating and damage to the unit.
At least 30 mm (1.2 in) is required between the top cover edges of IP21 conversion kit.
3.3.3.2 Horizontal Mounting
e30bf642.10
G
G
(1)
(2)
Illustration 5: Horizontal Mounting
1
Correct horizontal mounting (left side downwards)
2
Incorrect horizontal mounting (right side downwards)
3.3.3.3 Bus Decoupling Kit
The bus decoupling kit ensures mechanical fixation and electrical shielding of cables for the control cassettes with PROFINET/PROFI-
SAFE.
Each bus decoupling kit contains 1 horizontal decoupling plate and 1 vertical decoupling plate. Mounting the vertical decoupling
plate is optional. The vertical decoupling plate provides better mechanical support for Ethernet connectors and cables.
3.3.3.4 Mounting the Bus Decoupling Kit
Procedure
AQ381425076031en-000101 / 130R122318 | Danfoss A/S © 2022.02
Mechanical Installation
VLT® Midi Drive FC 280
Operating Guide

1.
2.
a.
b.
Place the horizontal decoupling plate on the control cassette mounted on the drive and fasten the plate using 2 screws as
shown in Illustration 6. Tightening torque is 0.7–1.0 Nm (6.2–8.9 in-lb).
1
2
3
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Illustration 6: Fasten the Horizontal Decoupling Plate with Screws
The illustration shows Ethernet-based connectors (RJ45). The actual connector type depends on the selected fieldbus var-
iant of the drive.
1
Mechanical springs
2
Metal clamps
3
Screws
Optional: Mount the vertical decoupling plate as follows:
Remove the 2 mechanical springs and 2 metal clamps from the horizontal plate.
Mount the mechanical springs and metal clamps on the vertical plate.
AQ381425076031en-000101 / 130R1223 | 19Danfoss A/S © 2022.02
Mechanical Installation
VLT® Midi Drive FC 280
Operating Guide

c.
3.
4.
Fasten the plate with 2 screws as shown in Illustration 7. Tightening torque is 0.7–1.0 Nm (6.2–8.9 in-lb).
e30be481.10
1
2
Illustration 7: Fasten the Vertical Decoupling Plate with Screws
The illustration shows Ethernet-based connectors (RJ45). The actual connector type depends on the selected
fieldbus variant of the drive.
1
Vertical decoupling plate
2
Screws
Push the Ethernet cable connectors (RJ45) into the sockets in the control cassette.
Place the Ethernet cables between the springloaded metal clamps to establish mechanical fixation between the cables and
the clamps.
AQ381425076031en-000101 / 130R122320 | Danfoss A/S © 2022.02
Mechanical Installation
VLT® Midi Drive FC 280
Operating Guide