Danfoss VLT AutomationDrive FC 301 User manual

Operating Guide
VLT® AutomationDrive FC 301/FC 302
0.25–75 kW, Enclosure sizes A-C
vlt-drives.danfoss.com

1
1.1
1.2
1.3
1.4
1.5
1.5.1
1.5.2
1.6
2
2.1
2.2
2.3
3
3.1
3.1.1
3.1.2
3.2
3.3
3.3.1
3.3.2
3.3.3
3.3.3.1
4
4.1
4.2
4.3
4.4
4.5
4.5.1
4.6
4.6.1
4.7
4.7.1
4.7.2
Contents
Introduction 6
Purpose of this Operating Guide 6
Trademarks 6
Additional Resources 6
Manual and Software Version 6
Product Overview 6
Intended Use 6
Exploded Views 7
Type Approvals and Certifications 7
Safety 9
Safety Symbols 9
Qualified Personnel 9
Safety Precautions 9
Mechanical Installation 12
Unpacking 12
Items Supplied 12
Storage 12
Installation Environment 13
Mounting 13
Cooling 13
Lifting 14
Mounting 14
Mounting with Mounting Plate and Railings 14
Electrical Installation 15
Safety Instructions 15
EMC-compliant Installation 15
Grounding 15
Wiring Schematic 17
Connecting the Motor 18
Grounding the Cable Shield 18
Connecting AC Mains 19
Connecting the Drive to Mains 19
Control Wiring 19
Safe Torque Off (STO) 19
Mechanical Brake Control 20
AQ267037727118en-000101/130R0300 | 3Danfoss A/S © 2021.01
Contents
VLT® AutomationDrive FC 301/FC 302
Operating Guide

4.8
5
5.1
5.1.1
5.2
5.3
6
6.1
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
6.1.10
6.1.11
6.1.12
6.1.13
6.1.14
6.1.15
7
7.1
7.2
7.3
7.4
8
8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.2
Installation Check List 20
Commissioning 22
Safety Instructions 22
Before Applying Power 22
Local Control Panel Operation 23
System Set-up 24
Basic I/O Configuration 25
Application Examples 25
Programming a Closed-loop Drive System 25
Wiring Configuration for Automatic Motor Adaptation (AMA) 26
Wiring Configuration for Automatic Motor Adaptation without T27 26
Wiring Configuration: Speed 27
Wiring Configuration: Feedback 29
Wiring Configuration: Run/Stop 31
Wiring Configuration: Start/Stop 33
Wiring Configuration: External Alarm Reset 35
Wiring Configuration: RS485 36
Wiring Configuration: Motor Thermistor 36
Wiring for Regen 37
Wiring Configuration for a Relay Setup with Smart Logic Control 38
Wiring Configuration: Mechanical Brake Control 39
Wiring Configuration for the Encoder 39
Wiring Configuration for Torque and Stop Limit 41
Maintenance, Diagnostics, and Troubleshooting 43
Maintenance and Service 43
Warning and Alarm Types 43
Warning and Alarm Displays 44
Descriptions of Warnings and Alarms 44
Specifications 60
Electrical Data 60
Mains Supply 200–240 V 60
Mains Supply 380–500 V 62
Mains Supply 525–600 V (FC 302 only) 65
Mains Supply 525–690 V (FC 302 only) 67
Power Cable Cross-sections 70
Mains Supply 70
AQ267037727118en-000101/130R03004 | Danfoss A/S © 2021.01
Contents
VLT® AutomationDrive FC 301/FC 302
Operating Guide

8.3
8.3.1
8.3.2
8.4
8.5
8.5.1
8.6
8.6.1
8.6.2
8.6.3
8.6.4
8.6.5
8.6.6
8.6.7
8.6.8
8.6.9
8.6.10
8.6.11
8.6.12
8.6.13
8.7
8.7.1
8.7.2
8.7.3
8.8
8.9
9
9.1
Motor Output and Motor Data 71
Motor Output (U, V, W) 71
Torque Characteristics 71
Ambient Conditions 71
Cable Specifications 72
Cable Lengths and Cross-sections for Control Cables 72
Control Input/Output and Control Data 72
Digital Inputs 72
STO Terminal 37 (Terminal 37 is Fixed PNP Logic) 72
Analog Inputs 73
Pulse/Encoder Inputs 73
Digital Outputs 74
Analog Output 74
Control Card, 24 V DC Output 74
Control Card, +10 V DC Output 74
Control Card, RS485 Serial Communication 74
Control Card, USB Serial Communication 74
Relay Outputs 75
Control Card Performance 75
Control Characteristics 75
Fuses and Circuit Breakers 76
Fuse Recommendations 76
CE Compliance 76
UL Compliance 79
Connection Tightening Torques 82
Power Ratings, Weight, and Dimensions 84
Appendix 88
Symbols and Abbreviations 88
AQ267037727118en-000101/130R0300 | 5Danfoss A/S © 2021.01
Contents
VLT® AutomationDrive FC 301/FC 302
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 instruc-
tions and general warnings. Always keep this Operating Guide with the drive.
VLT®is a registered trademark for Danfoss A/S.
1.2 Trademarks
VLT®is a registered trademark for Danfoss A/S.
1.3 Additional Resources
Other resources are available to understand advanced drive functions and programming.
The Programming Guide provides greater detail on working with parameters and shows many application examples.
The Design Guide provides detailed information about capabilities and functionality to design motor control systems.
The Safe Torque Off Operating Guide provides detailed specifications, requirements, and installation instructions for the Safe
Torque Off function.
Supplementary publications and manuals are available from Danfoss, see www.danfoss.com.
1.4 Manual and Software Version
This manual is regularly reviewed and updated. All suggestions for improvement are welcome.
Table 1: Manual and Software Version
Version
Remarks
Software version
AQ267037727118, version 0101
Editorial update.
8.43, 48.4x (IMC)
1.5 Product Overview
1.5.1 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 AC 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 Ambient Conditions.
NOTICE
OUTPUT FREQUENCY LIMIT
Due to export control regulations, the output frequency of the drive is limited to 590 Hz. For demands exceeding 590 Hz, contact
Danfoss.
AQ267037727118en-000101 / 130R03006 | Danfoss A/S © 2021.01
Introduction
VLT® AutomationDrive FC 301/FC 302
Operating Guide

1.5.2 Exploded Views
1
2
3
4
5
6
7
8
9
10
11
12
13
16
17
18
19
14
6
FAN MOUNTING
QDF-30
DC-
DC+
Removejumper to activate Safe Stop
Max.24 Volt !
12
13
18
19
27
29
32
33
20
37
06 05 04 03 02 01
130BF713.10
1
3
5
20
9
6
13
15
14
6
18
11
10
16, 17
19
14
7
8
4
2
Illustration 1: Exploded View Enclosure Size A, IP20 (left) and Enclosure Size C, IP55/IP66 (right)
1
Local control panel (LCP)
2
Cover
3
RS485 fieldbus connector
4
Digital input/output connector
5
Digital input/output connector
6
Shielded cable grounding and relief
7
USB connector
8
RS485 termination switch
9
DIP switch for A53 and A54
10
Relay 1 (01, 02, 03)
11
Relay 2 (04, 05, 06)
12
Lifting ring
13
Mounting slot
14
Ground connection (PE)
15
Cable shield connector
16
Brake terminal (-81, +82)
17
Load sharing terminal (-88, +89)
18
Motor terminals 96 (U), 97 (V), 98 (W)
19
Mains input terminals 91 (L1), 92 (L2), 93 (L3)
20
LCP connector
1.6 Type Approvals and Certifications
The following list is a selection of possible type approvals and certifications for Danfoss drives:
NOTICE
Drives of enclosure size T7 (525–690 V) are not UL listed.
Table 2: Type Approvals and Certifications
AQ267037727118en-000101 / 130R0300 | 7Danfoss A/S © 2021.01
Introduction
VLT® AutomationDrive FC 301/FC 302
Operating Guide

089
NOTICE
The specific approvals and certification for the drive are on the nameplate of the drive. For more information, contact the local
Danfoss office or partner.
For more information on UL 508C thermal memory retention requirements, refer to the section Motor Thermal Protection in the
product-specific Design Guide.
For more information on compliance with the European Agreement concerning International Carriage of Dangerous Goods by In-
land Waterways (ADN), refer to the section ADN-compliant Installation in the product-specific Design Guide.
AQ267037727118en-000101 / 130R03008 | Danfoss A/S © 2021.01
Introduction
VLT® AutomationDrive FC 301/FC 302
Operating Guide

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2 Safety
2.1 Safety Symbols
The following symbols are used in this manual:
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 skilled personnel can result in death or serious injury.
Only skilled personnel must perform installation, start-up, and maintenance.
WARNING
UNINTENDED START
When the drive is connected to the AC mains, DC supply, or load sharing, the motor may start at any time, causing risk of death,
serious injury, and equipment or property damage. The motor may start by activation of an external switch, a fieldbus command,
an input reference signal from the LCP or LOP, via remote operation using MCT 10 Set-up software, or after a cleared fault condi-
tion.
Press [Off] on the LCP before programming parameters.
Disconnect the drive from the mains whenever personal safety considerations make it necessary to avoid unintended motor
start.
Check that the drive, motor, and any driven equipment are in operational readiness.
AQ267037727118en-000101 / 130R0300 | 9Danfoss A/S © 2021.01
Safety
VLT® AutomationDrive FC 301/FC 302
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 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]
Minimum waiting time (minutes)
4
7
15
200–240
0.25–3.7 kW (0.34–5 hp)
–
5.5–37 kW (7.5–50 hp)
380–500
0.25–7.5 kW (0.34–10 hp)
–
11–75 kW (15–100 hp)
525–600
0.75–7.5 kW (1–10 hp)
–
11–75 kW (15–100 hp)
525–690
–
1.5–7.5 kW (2–10 hp)
11–75 kW (15–100 hp)
WARNING
LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the drive properly can result in death or serious injury.
Ensure that the minimum size of the ground conductor complies with the local safety regulations for high touch current
equipment.
WARNING
ROTATING SHAFTS
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.
WARNING
UNINTENDED MOTOR ROTATION WINDMILLING
Unintended rotation of permanent magnet motors creates voltage and can charge the unit, resulting in death, serious injury, or
equipment damage.
Ensure that permanent magnet motors are blocked to prevent unintended rotation.
AQ267037727118en-000101 / 130R030010 | Danfoss A/S © 2021.01
Safety
VLT® AutomationDrive FC 301/FC 302
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.
AQ267037727118en-000101 / 130R0300 | 11Danfoss A/S © 2021.01
Safety
VLT® AutomationDrive FC 301/FC 302
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.
e30bd600.13
RUS LISTED
76 X1 E134261 IND. CONT. EQ.
UL Voltage 525-600 V
DANGER
See manual for special condition/mains fuse
voir manual de conditions speclales/fusibles
`
15 min.
VLT R
Automation Drive
T/C: FC-302P75KT7P21H2XGCXXXSXXXXAXBXCXXXXDX
P/N: 134G6302 S/N: 999999G999
55kW / 75 kW; 75kW / 90 kW (NO)
IN: 3x525-690V 50/60Hz 87/86A; 161/145A (NO)
OUT: 3x0-Vin 0-590Hz 87/83A; 105/100A (NO)
Type 1/ IP21 Tamb. 50 C /122 F
o o
MADE IN DENMARK
Danfoss A/S
6340 NordborgDenmark
www.danfoss.com
1
2
3
4
5
6
7
8
9
10
Illustration 2: Product Nameplate (Example)
1
Type code
2
Code number
3
Serial number
4
Power rating
5
Input voltage, frequency, and current (at low/high
voltages)
6
Output voltage, frequency, and current (at low/high
voltages)
7
Enclosure size and IP rating
8
Maximum ambient temperature
9
Certifications
10
Discharge time (Warning)
NOTICE
Do not remove the nameplate from the drive (loss of warranty).
3.1.2 Storage
Ensure that the requirements for storage are fulfilled, see 8.4 Ambient Conditions.
AQ267037727118en-000101 / 130R030012 | Danfoss A/S © 2021.01
Mechanical Installation
VLT® AutomationDrive FC 301/FC 302
Operating Guide

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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 8.4 Ambient Conditions.
3.3 Mounting
3.3.1 Cooling
Ensure that top and bottom clearance for air cooling is provided. See Table 4 for clearance requirements.
a
a
e30bd528.10
Illustration 3: Top and Bottom Cooling Clearance
Table 4: Minimum Airflow Clearance Requirements
Enclosure
A1–A5
B1–B4
C1, C3
C2, C4
a [mm (in)]
100 (3.9)
200 (7.8)
200 (7.8)
225 (8.9)
AQ267037727118en-000101 / 130R0300 | 13Danfoss A/S © 2021.01
Mechanical Installation
VLT® AutomationDrive FC 301/FC 302
Operating Guide

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1.
2.
3.
4.
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3.3.2 Lifting
WARNING
HEAVY LOAD
Unbalanced loads can fall and loads can tip over. Failure to take proper lifting precautions increases risk of death, serious injury,
or equipment damage.
Never walk under suspended loads.
To guard against injury, wear personal protective equipment such as gloves, safety glasses, and safety shoes.
Be sure to use lifting devices with the appropriate weight rating. To determine a safe lifting method, check the weight of the
unit.
The angle from the top of the drive module to the lifting cables has an impact on the maximum load force on the cable. This
angle must be 65° or greater. Attach and dimension the lifting cables properly.
To determine a safe lifting method, check the weight of the unit in 8.9 Power Ratings, Weight, 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.
The drive allows side-by-side installation.
Locate the unit as near to the motor as possible. Keep the motor cables as short as possible.
Mount the unit vertically to a solid flat surface or to the optional backplate to provide cooling airflow.
Use the slotted mounting holes on the unit for wall mount, when provided.
3.3.3.1 Mounting with Mounting Plate and Railings
A mounting plate is required when mounted on railings.
e30bd504.11
Illustration 4: Proper Mounting with Mounting Plate
AQ267037727118en-000101 / 130R030014 | Danfoss A/S © 2021.01
Mechanical Installation
VLT® AutomationDrive FC 301/FC 302
Operating Guide

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4 Electrical Installation
4.1 Safety Instructions
See 2.3 Safety Precautions for general safety instructions.
WARNING
INDUCED VOLTAGE
Induced voltage from output motor cables that run together can charge equipment capacitors, even with the equipment turned
off and locked out. Failure to run output motor cables separately or to use shielded cables could result in death or serious injury.
Run output motor cables separately or use shielded cables.
Simultaneously lock out all the drives.
WARNING
SHOCK HAZARD
The unit can cause a DC current in the PE conductor. Failure to use a Type B residual current-operated protective device (RCD)
may lead to the RCD not providing the intended protection and therefore may result in death or serious injury.
When an RCD is used for protection against electrical shock, only a Type B device is allowed on the supply side.
Overcurrent protection
Extra protective equipment, such as short-circuit protection or motor thermal protection between drive and motor, is required
for applications with multiple motors.
Input fusing is required to provide short circuit and overcurrent protection. If not factory-supplied, the installer must provide
fuses. See maximum fuse ratings in 8.7.2 CE Compliance and 8.7.3 UL Compliance.
Wire type and ratings
All wiring must comply with local and national regulations regarding cross-section and ambient temperature requirements.
Power connection wire recommendation: Minimum 75 °C (167 °F) rated copper wire. See Table 29 to Table 40, and 8.5.1 Cable
Lengths and Cross-sections for Control Cables for recommended wire sizes and types.
4.2 EMC-compliant Installation
To obtain an EMC-compliant installation, follow the instructions provided in 4.3 Grounding, 4.4 Wiring Schematic, 4.5 Connecting
the Motor, and 4.7 Control Wiring.
NOTICE
POTENTIAL EQUALIZATION
Risk of burst transient when the ground potential between the drive and the control system is different. Install equalizing cables
between the system components. Recommended cable cross-section: 16 mm2(6 AWG).
4.3 Grounding
WARNING
LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the drive properly can result in death or serious injury.
Ensure that the minimum size of the ground conductor complies with the local safety regulations for high touch current
equipment.
For electrical safety
Ground the drive in accordance with applicable standards and directives.
Use a dedicated ground wire for input power, motor power, and control wiring.
Do not ground 1 drive to another in a daisy-chain fashion (see Illustration 5.)
AQ267037727118en-000101 / 130R0300 | 15Danfoss A/S © 2021.01
Electrical Installation
VLT® AutomationDrive FC 301/FC 302
Operating Guide

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Keep the ground wire connections as short as possible.
Follow motor manufacturer wiring requirements.
Minimum cable cross-section for the ground wires: 10 mm2(7 AWG).
Separately terminate individual ground wires, both complying with the dimension requirements.
e30bc500.11
FC 1
FC 1
FC 2
FC 2
FC 3
FC 3
PE
PE
Illustration 5: Grounding Principle
For EMC-compliant installation
Establish electrical contact between the cable shield and the drive enclosure by using metal cable glands or by using the clamps
provided on the equipment.
Use high-strand wire to reduce burst transient.
Do not use pigtails.
NOTICE
POTENTIAL EQUALIZATION
Risk of burst transient when the ground potential between the drive and the control system is different. Install equalizing cables
between the system components. Recommended cable cross-section: 16 mm2(6 AWG).
AQ267037727118en-000101 / 130R030016 | Danfoss A/S © 2021.01
Electrical Installation
VLT® AutomationDrive FC 301/FC 302
Operating Guide

4.4 Wiring Schematic
130BD599.11
––
Motor
Analog Output
ON=Terminated
OFF=Open
91 (L1)
92 (L2)
93 (L3)
PE
88 (-)
89 (+)
53
(
A IN)
54
(
A IN)
37 (D IN)1)
18 (D IN)
10
V DC
15 mA 130/200 mA
+ - + -
(U) 96
(V) 97
(W) 98
(PE) 99
(P RS485) 68
(N RS485) 69
0 V
5V
S801
0/4–20 mA
RS-485
03
240 V AC, 2 A
24 V DC
02
01
05
04
06
24
V (NPN)
0
V (PNP)
0
V (PNP)
24
V (NPN)
19 (D IN)
24
V (NPN)
0
V (PNP)
24
V
0
V
0
V (PNP)
24
V (NPN)
(D IN/OUT
)
1)
0
V
24
V
29
24
V (NPN)
0
V (PNP)
0
V (PNP)
24
V (NPN)
33 (D IN)
32 (D IN)
1 2
ON
S201
ON
21
S202
ON=0/4–20 mA
95
P 5-00
21
ON
S801
(R+) 82
(R-) 81
: Chassis
240 V AC, 2 A
400 V AC, 2 A
: PE
3-phase
power
input
+10 V DC
DC bus
0/-10 V DC to
+10 V DC
0/4–20 mA
0/-10 V DC to
+10 V DC
0/4–20 mA
50 (+10 V OUT)
55 (COM A IN)
12 (+24 V OUT)
13 (+24 V OUT)
20 (COM D IN)
27 (D IN/OUT)
Switch mode
power supply
Brake
resistor
Relay 1
Relay 2
1)
(COM A OUT) 39
(A OUT) 42
: Ground
: Ground 1
: Ground 2
(COM RS485) 61
2)
RS485
interface
OFF=0/-10 V DC
to +10 V DC
Illustration 6: Basic Wiring Schematic
A
Analog
D
Digital
1
Terminal 37 (optional) is used for Safe Torque Off
(STO). For installation instructions, refer to the VLT®
Safe Torque Off Operating Guide. For FC 301, termi-
nal 37 is only included in enclosure size A1. Relay 2
and terminal 29 have no function in FC 301.
2
Do not connect cable shield.
Read more in EMC-Compliant Installation.
AQ267037727118en-000101 / 130R0300 | 17Danfoss A/S © 2021.01
Electrical Installation
VLT® AutomationDrive FC 301/FC 302
Operating Guide

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1.
2.
3.
4.
5.
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4.5 Connecting the Motor
WARNING
INDUCED VOLTAGE
Induced voltage from output motor cables that run together can charge equipment capacitors, even with the equipment turned
off and locked out. Failure to run output motor cables separately or to use shielded cables could result in death or serious injury.
Run output motor cables separately or use shielded cables.
Simultaneously lock out all the drives.
Run output separately or
Use shielded cables.
Comply with local and national electrical codes for cable sizes. For maximum wire sizes, see Table 29 to Table 40.
Follow motor manufacturer wiring requirements.
Motor wiring knockouts or access panels are provided at the base of IP21 (NEMA 1/12) and higher units.
Do not wire a starting or pole-changing device (for example a Dahlander motor or slip ring asynchronous motor) between the
drive and the motor.
4.5.1 Grounding the Cable Shield
Procedure
Strip a section of the outer cable insulation.
Position the stripped wire under the cable clamp to esatblish mechanical fixation and electrical contact between the cable
shield and ground.
Connect the ground wire to the nearest grounding terminal in accordance with the grounding instructions, see 4.3
Grounding.
e30bd531.11
U
V
W
96
97
98
Connect the 3-phase motor wiring to terminals 96 (U), 97 (V), and 98 (W).
Torque-tighten the terminals, see 8.8 Connection Tightening Torques.
Example
Mains input, motor, and grounding for basic drives. Actual configurations vary with unit types and optional equipment.
AQ267037727118en-000101 / 130R030018 | Danfoss A/S © 2021.01
Electrical Installation
VLT® AutomationDrive FC 301/FC 302
Operating Guide

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2.
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4.
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+DC
BR-
B
M A I N S
L1 L2 L3
91 92 93
RELAY 1 RELAY 2
99
U V W
MOTOR
99
130BF048.11
Illustration 7: Example of Motor, Mains, and Ground Wiring
4.6 Connecting AC Mains
Size the wiring based on the input current of the drive. For maximum wire sizes, see Table 29 to Table 40.
Comply with local and national electrical codes for cable sizes.
4.6.1 Connecting the Drive to Mains
Procedure
Connect the 3-phase AC input power wiring to terminals L1, L2, and L3.
Depending on the configuration of the equipment, connect the input power to the mains input terminals or the input dis-
connect.
Ground the cable in accordance with the grounding instructions, see 4.3 Grounding and 4.5.1 Grounding the Cable Shield.
When supplied from an isolated mains source (IT mains or floating delta) or TT/TN-S mains with a grounded leg (grounded
delta), ensure that parameter 14-50 RFI Filter is set to [0] Off. This setting prevents damage to the DC link and reduces
ground capacity currents in accordance with IEC 61800-3.
4.7 Control Wiring
Isolate the control wiring from the high-power components in the drive.
When the drive is connected to a thermistor, enusre that the thermistor control wiring is shielded and reinforced/double insula-
ted. A 24 V DC supply voltage is recommended.
4.7.1 Safe Torque Off (STO)
To run STO, additional wiring for the drive is required.
Refer to the VLT® Frequency Converters Safe Torque Off Operating Guide for further information.
AQ267037727118en-000101 / 130R0300 | 19Danfoss A/S © 2021.01
Electrical Installation
VLT® AutomationDrive FC 301/FC 302
Operating Guide

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4.7.2 Mechanical Brake Control
In hoisting/lowering applications, it is necessary to control an electro-mechanical brake.
Control the brake using any relay output or digital output (terminal 27 or 29).
Keep the output closed (voltage-free) as long as the drive is unable to keep the motor at standstill, for example due to the load
being too heavy.
Select [32] Mechanical brake control in parameter group 5-4* Relays for applications with an electromechanical brake.
The brake is released when the motor current exceeds the value in parameter 2-20 Release Brake Current.
The brake is engaged when the output frequency is less than the frequency set in parameter 2-21 Activate Brake Speed [RPM] or
parameter 2-22 Activate Brake Speed [Hz], and only if the drive carries out a stop command.
If the drive is in alarm mode or in an overvoltage situation, the mechanical brake immediately closes.
NOTICE
The drive is not a safety device. It is the responsibility of the system designer to integrate safety devices according to relevant
national crane/lift regulations.
e30ba902.11
L1 L2 L3
U V W 02 01
A1
A2
Drive Output
relay
Command circuit
220VAC
Mechanical
brake
Shaft
Motor
Frewheeling
diode
Brake380VAC
Output
contactor
input
power circuit
Illustration 8: Connecting the Mechanical Brake to the Drive
4.8 Installation Check List
Before completing installation of the unit, inspect the entire installation as detailed in the following table. Check and mark the items
when completed.
Table 5: Installation Check List
Inspect for
Description
√
Auxiliary
equipment
Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers residing on the in-
put power side of the drive, or output side to the motor. Ensure that they are ready for full-speed oper-
ation.
Check the function and installation of any sensors used for feedback to the drive.
Remove any power factor correction capacitors on the motor.
Adjust any power factor correction capacitors on the mains side and ensure that they are dampened.
Cable routing
Ensure that the motor wiring and control wiring are separated, shielded, or in 3 separate metallic con-
duits for high-frequency interference isolation.
AQ267037727118en-000101 / 130R030020 | Danfoss A/S © 2021.01
Electrical Installation
VLT® AutomationDrive FC 301/FC 302
Operating Guide