Danfoss vlt fcd 302 User manual

ENGINEERING TOMORROW
Operating Guide
VLT®Decentral Drive FCD 302
vlt-drives.danfoss.com

Contents
1 Introduction 3
1.1 Introduction 3
1.2 Safety 3
1.3 Purpose of the Manual 4
1.4 Additional Resources 4
1.5 Product Overview 5
1.6 Internal Frequency Converter Controller Functions 5
1.7 Type Code Description 6
2 Installation 8
2.1 Check List 8
2.2 Exploded View of the FCD 302 9
2.3 Mechanical Installation 11
2.3.1 Recommended Tools and Equipment 11
2.3.2 Mechanical Dimensions 11
2.3.3 Cooling 11
2.3.4 Mounting 12
2.3.4.1 Hygienic Installation 13
2.3.4.2 Cleaning 13
2.3.5 Tightening Torques 13
2.4 Electrical Installation 13
2.4.1 Requirements 15
2.4.2 Location of Terminals 17
2.4.3 Terminal Types 18
2.4.4 Motor Connection 18
2.4.5 Control Wiring 19
2.4.6 AC Mains Input Connection 20
2.4.7 Motor and Mains Connection with Service Switch 20
2.4.8 Brake Resistor 20
2.4.9 Mechanical Brake 21
2.4.10 Connection of Sensors/Actuators on M12 Sockets 21
2.4.11 Earth (Grounding) Requirements 21
2.4.12 Grounding of Screened Control Cables 24
2.4.13 DIP Switches 25
2.4.14 Serial Communication 25
2.4.15 Connection to PC 25
2.4.16 Safe Stop 26
3 Start Up and Functional Testing 27
3.1 Pre-start 27
Contents Operating Guide
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 1

3.1.1 Safety Inspection 27
3.1.2 Start Up Check List 28
3.2 Applying Power to the Frequency Converter 29
3.3 Quick Setup 29
3.4 Automatic Motor Adaptation 30
3.5 Local-control Test 30
3.6 System Start Up 31
4 User Interface 32
4.1 Local Control Panel 32
4.1.1 LCP Layout 32
4.1.2 Setting LCP Display Values 32
4.1.3 Display Menu Keys 33
4.1.4 Navigation Keys 34
4.1.5 Operation Keys 34
4.2 Back Up and Copying Parameter Settings 34
4.2.1 Uploading Data to the LCP 35
4.2.2 Downloading Data from the LCP 35
4.3 Restoring Default Settings 35
4.3.1 Recommended Initialization 35
4.3.2 Manual Initialization 35
5 Programming 36
5.1 Introduction 36
5.2 Quick Setup 36
5.3 Parameter Lists 40
5.4 Remote Programming with MCT 10 Set-up Software 59
6 Status Indication 60
6.1 Frontal LEDs 60
6.2 Status Display 60
6.3 Status Message Denitions 61
7 Troubleshooting 63
7.1.1 Warnings/Alarm Messages 63
8 Specications 72
8.1 Electrical Data and Wire Sizes 72
8.1.2 UL/cUL Approved Pre-fuses 73
8.1.3 FCD 302 DC Voltage Levels 73
8.2 General Specications 74
Index 79
Contents VLT®Decentral Drive FCD 302
2 Danfoss A/S © 05/2016 All rights reserved. MG04F402

1 Introduction
1.1 Introduction
1.1.1 Approvals
1.1.2 Symbols
The following symbols are used in this manual:
WARNING
Indicates a potentially hazardous situation that could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that could
result in minor or moderate injury. It can also be used to
alert against unsafe practices.
NOTICE
Indicates important information, including situations that
can result in damage to equipment or property.
Conventions
Numbered lists indicate procedures.
Bullet lists indicate other information and description of
illustrations.
Italicized text indicates:
•Cross-reference.
•Link.
•Footnote.
•Parameter name, parameter group name,
parameter option.
All dimensions in drawings are in mm (in).
* Indicates a default setting of a parameter.
VLT®is a registered trademark.
EtherNet/IP™is a trademark of ODVA, Inc.
1.2 Safety
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC supply, or load sharing.
Failure to perform installation, start-up, and maintenance
by qualied personnel can result in death or serious
injury.
•Only qualied personnel must perform instal-
lation, start-up, and maintenance.
WARNING
UNINTENDED START
When the frequency converter 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. The motor can start with an external
switch, a eldbus command, an input reference signal
from the LCP or LOP, via remote operation using MCT 10
Set-up Software, or after a cleared fault condition.
To prevent unintended motor start:
•Press [O/Reset] on the LCP before
programming parameters.
•Disconnect the frequency converter from the
mains.
•Completely wire and assemble the frequency
converter, motor, and any driven equipment
before connecting the frequency converter to
AC mains, DC supply, or load sharing.
Introduction Operating Guide
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 3
11

WARNING
DISCHARGE TIME
The frequency converter contains DC-link capacitors,
which can remain charged even when the frequency
converter is not powered. High voltage can be present
even when the warning LED indicator lights are o.
Failure to wait the specied time after power has been
removed before performing service or repair work can
result in death or serious injury.
•Stop the motor.
•Disconnect AC mains and remote DC-link power
supplies, including battery back-ups, UPS, and
DC-link connections to other frequency
converters.
•Disconnect or lock PM motor.
•Wait at least 4 minutes for the capacitors to
discharge fully.
•Before performing any service or repair work,
use an appropriate voltage measuring device to
make sure that the capacitors are fully
discharged.
CAUTION
RISK OF INJURY OR PROPERTY DAMAGE
Do not assume that a motor is wired properly after
completed service of the frequency converter.
Check for:
•Loose connections.
•Improper programming.
•Added equipment.
Failure to perform these checks can result in personal
injury, property damage, or less than optimal
performance.
WARNING
REPAIR WORK
In the event of an error, alarm or warning, refer to
chapter 7 Troubleshooting. Before commencing repair
work, contact Danfoss Service.
NOTICE
PELV COMPLIANCE
All control terminals and relay terminals 01-03/04-06
comply with PELV (Protective Extra Low Voltage).
However, in grounded delta conguration above 400 V,
the frequency converter is not PELV-compliant.
1.3 Purpose of the Manual
This manual is intended to provide detailed information for
the installation and start up of the frequency converter.
Chapter 2 Installation provides details of mechanical and
electrical installation. Chapter 3 Start Up and Functional
Testing provides detailed procedures for startup and
functional testing. The remaining chapters provide supple-
mentary details. These include user interface, basic
operational concepts, programming and application
examples, start up troubleshooting, and equipment speci-
cations.
Optional equipment is available that can change some of
the procedures described. Be sure to see the instructions
supplied with those options for specic requirements.
1.4 Additional Resources
Other resources are available to understand advanced
frequency controller functions and programming.
•The VLT
®
Decentral Drive FCD 302 Programming
Guide, provides greater detail in how to work
with parameters and many application examples.
•The VLT
®
Decentral Drive FCD 302 Design Guide, is
intended to provide detailed capabilities and
functionality to design motor control systems.
•VLT
®
Installation Instructions.
•VLT
®
Installation Instructions.
•VLT
®
Safe PLC Interface Option Installation
Instructions.
•Fieldbus manuals:
•VLT
®
PROFIBUS DP MCA 101 Programming
Guide.
•VLT
®
PROFIBUS DP MCA 101 Installation
Instructions.
•VLT
®
EtherNet/IP MCA 121 Programming
Guide.
•VLT
®
EtherNet/IP MCA 121 Installation
Instructions.
•VLT
®
PROFINET MCA 120 Programming
Guide.
•VLT
®
PROFINET MCA 120 Installation
Instructions.
•VLT
®
Brake Resistor MCE 101 Design Guide.
•Training courses both on-line and in person.
•Hotline, telephone and on-line help.
•Installation, set up, and commissioning is also
available by Danfoss trained and approved
installers.
Introduction VLT®Decentral Drive FCD 302
4 Danfoss A/S © 05/2016 All rights reserved. MG04F402
11

•Danfoss sales representatives are also trained to
provide customer service and instruction for
applications.
Contact your Danfoss supplier or go to www.Danfoss.com
for downloads or additional information.
1.5 Product Overview
A frequency converter is an electronic motor controller
that converts AC mains input into a variable AC waveform
output. The frequency and voltage of the output are
regulated to control the motor speed or torque.
In addition, the frequency converter monitors the system
and motor status, issues warnings or alarms for fault
conditions, starts and stops the motor, optimizes energy
eciency, provides line harmonics protection, and oers
many more control, monitoring, and eciency functions.
Operation and monitoring functions are available as status
indications to an outside control system or serial communi-
cation network.
The VLT®Decentral Drive FCD 302 is designed for decentral
mounting, for example, in the food and beverage industry,
or for other material handling applications. With the FCD
302 it is possible to reduce costs by placing the power
electronics decentrally. Central panels are then rendered
obsolete, saving cost, space and eort for installation and
wiring. The basic design is service-friendly, with a
pluggable electronic part and a exible and “spacious”
wiring box. It is easy to change electronics without the
need for re-wiring.
1.6 Internal Frequency Converter Controller
Functions
Below is a block diagram of the internal components of
the frequency converter. See Table 1.1 for their functions.
12 3
4
5
6
7
8
130BC378.10
Illustration 1.1 Frequency Converter Block Diagram
Area Title Functions
1 Mains input Three-phase AC mains power supply to the
frequency converter.
2Rectier The rectier bridge converts the AC input to
DC current for use within the frequency
converter.
3 DC bus The intermediate DC-bus circuit of the
frequency converter handles the DC current
for internal routing.
4 DC line
reactors
•Filter the intermediate DC circuit voltage
•Prove line transient protection
•Reduce RMS current
•Raise the power factor reected back to
the line
•Reduce harmonics on the AC input
5 Capacitor
bank
•Stores the DC power
•Provides a regulated DC current supply
•Provides ride-through protection for short
power losses
6 Inverter The inverter converts the DC into a controlled
PWM AC waveform for a controlled variable
output to the motor.
7 Output to
motor
By controlling the voltage and frequency, the
frequency converter provides regulated motor
control from 0-50/60 Hz at 100% supply
voltage.
8 Control
circuitry
•Input power, internal processing, output,
and motor current are monitored to
provide ecient operation and control
•User interface and external commands are
monitored and performed
•Status output and control can be provided
Table 1.1 Frequency Converter Internal Components
Introduction Operating Guide
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 5
11

1.7 Type Code Description
Position 2 4 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 39 39
F C D 3 0 2 P T 4 H 1 X A B X X X X X D
1 3 5
130BB797.10
Position Description Choices/options
01–03 Product group FCD Decentral Drive
04–06 Frequency converter series 302 Advanced performance
07–10 Power size
PK37 0.37 kW/0.5 HP
PK55 0.55 kW/0.75 HP
PK75 0.75 kW/1.0 HP
P1K1 1.1 kW/1.5 HP
P1K5 1.5 kW/2.0 HP
P2K2 2.2 kW/3.0 HP
P3K0 3.0 kW/4.0 HP (large unit only)
PXXX Installation box only (without power section)
11–12 Phases, Mains voltage T Three phase
4 380-480 V AC
13–15 Enclosure
B66 Standard Black -
IP66/Type 4X
W66 Standard White -
IP66/Type 4X
W69 Hygienic White -
IP66K/Type 4X
16–17 RFI lter H1 RFI lter class A1/C2
18 Brake X No brake
S Brake chopper + mechanical brake Supply
19 Hardware conguration
1 Complete product, small unit, stand alone mount
3 Complete product, large unit, stand alone mount
X Drive part, small unit (No installation box)
Y Drive part, large unit (No installation box)
R Installation box, small unit, stand alone mount (No drive part)
T Installation box, large unit, stand alone mount (No drive part)
20 Brackets
X No brackets
E Flat brackets
F 40 mm brackets
21 Threads X No installation box
M Metric threads
22 Switch option
X No switch option
E Service switch on mains input
F Service switch on motor output
H Circuit breaker & mains disconnect, looping terminals (large unit only)
K Service switch on mains input with additional looping terminals (large unit only)
23 Display X No display connector (No installation box)
C With Display Connector
24 Sensor plugs
X No sensor plugs
E Direct mount 4xM12: 4 digital inputs
F Direct mount 6xM12: 4 digital inputs, 2 relay outputs
25 Motor plug X No motor plug
26 Mains plug X No mains plug
Introduction VLT®Decentral Drive FCD 302
6 Danfoss A/S © 05/2016 All rights reserved. MG04F402
11

Position Description Choices/options
27 Fieldbus plug
X No eldbus plug
E M12 Ethernet
P M12 Probus
28 Reserved X For future use
29–30 A option
AX No A option
A0 Probus DP
AN Ethernet IP
AL ProNet
31–32 B option
BX No B option
BR Encoder option
BU Resolver option
BZ Safety PLC Interface
33–37 Reserved XXXXX For future use
38–39 D option DX No D option
D0 24 V DC back-up input
Illustration 1.2 Type Code Description
Not all choices/options are available for each FCD 302 variant. To verify if the appropriate version is available, consult the
Drive Congurator on the Internet:
drivecong.danfoss.com.
NOTICE
A and D options for FCD 302 are integrated into the control card. Do not use pluggable options for frequency
converters. Future retrot requires exchange of the entire control card. B options are pluggable, using the same concept
as for frequency converters.
Introduction Operating Guide
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 7
11

2 Installation
2.1 Check List
The packaging contains:
•Accessories bag, supplied only with order of
installation box. Contents:
-2 cable clamps
-Bracket for motor/loads cables
-Elevation bracket for cable clamp
-Screw M4x20 mm
-Thread forming 3.5 mm x 8 mm
•Documentation
•Frequency converter
Depending on options tted, the box will contain one or
two bags and one or more booklets.
•When unpacking the frequency converter, ensure
that the unit is undamaged and complete
•Compare model number of unit on the name
plate to what was ordered, to verify the proper
equipment.
•Ensure the mains (power) supply, frequency
converter, and motor are rated for same voltage.
Installation VLT®Decentral Drive FCD 302
8 Danfoss A/S © 05/2016 All rights reserved. MG04F402
22

2.2 Exploded View of the FCD 302
130BC379.10
3
1
4
6
5
9
10
7
2
8
1 Inverter part 6 Installation box
2 Fastening screws (4 x, 1 in each corner) 7 Display connection
3 Sealing gasket 8 Access to USB port
4 Inverter part plastic cover 9 Service switch-motor side (alternatively, switch located on
mains side, or not mounted)
5 Ground connection pin 10 Flat mounting brackets
Illustration 2.1 Exploded View Small Unit
Installation Operating Guide
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 9
22

1 Inverter part 7 Display connection
2 Fastening screws (4 x, 1 in each corner) 8 Access to USB port
3 Sealing gasket 9 Service switch*-motor side (alternatively, switch located on mains side, or
not mounted)
4 Inverter part plastic cover 10 Flat mounting brackets
5 Ground connection pin 11 Circuit breaker* (optional)
6 Installation box * The unit can be congured with either service switch or circuit breaker, not
both. The illustration shown is not congurable in practice, but is displayed
to show the respective positions of components only.
Illustration 2.2 Exploded View Large Unit
Installation VLT®Decentral Drive FCD 302
10 Danfoss A/S © 05/2016 All rights reserved. MG04F402
22

2.3 Mechanical Installation
2.3.1 Recommended Tools and Equipment
Equipment Size Description
Screwdrivers
Socket (Hex) 8 For fastening inverter screws/
mounting of brackets
Slotted 0.4x2.5 mm For spring loaded power and
control terminals
Slotted/Torx 1.0x5.5 mm/
TX20
For cable clamps inside the
installation box
Spanner 19, 24, 28
mm
For blind-plugs
LCP, part no.
130B1078
Local control panel
LCP cable, part no.
130B5776
Connection cable for local
control panel
2.3.2 Mechanical Dimensions
41
175
349.5
315
ON WARNING ALARM
Bus MS NS2NS1
331.5
280
178
6.5
80
80
190
25
Ø13
130BB712.10
200
12
3
4
Illustration 2.3 Cable Entries and Hole Sizes (Small Unit)
Illustration 2.4 Cable Entries and Hole Sizes (Large Unit)
Motor side 1xM20, 1xM25
Control side 2xM20, 9xM161)
Mains side 2xM25
1) Also used for 4xM12/6xM12 sensor/acuator sockets.
2.3.3 Cooling
The FCD 302 has no forced cooling. It relies only on
natural convection for cooling using the cooling ns.
•A minimum of 100 mm (4 in) top and bottom air
cooling clearance must be provided. See
Illustration 2.5.
•Derating starts above 40 °C (104 °F) and 1000 m
(3300 ft) elevation above sea level. See FCD 302
Design Guide, MG04HXYY for detailed information.
Installation Operating Guide
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 11
22

100 (4)
100 (4)
100 (4)
100 (4)
195NA261.10
Illustration 2.5 Top and Bottom Cooling Clearance
2.3.4 Mounting
The FCD 302 consists of two parts: The installation box and
the electronic part. See chapter 2.2 Exploded View of the
FCD 302.
WARNING
LOOSE ELECTRONIC PART
Do not switch on the mains before the 4 screws are
tightened. Failure to tighten these screws can result in
personal injury or material damage when the unit is
loaded.
Stand alone mounting
•The holes on the rear of the installation box are
used to x mounting brackets
•Ensure that the strength of the mounting location
can support the unit weight
•Make sure that the proper mounting screws or
bolts are used
130BB701.10
Illustration 2.6 FCD 302 Stand Alone Mounted with Mounting
Brackets
Permitted mounting positions
130BC382.10
Illustration 2.7 Permitted Mounting Positions - Standard
Applications
Installation VLT®Decentral Drive FCD 302
12 Danfoss A/S © 05/2016 All rights reserved. MG04F402
22

2.3.4.1 Hygienic Installation
The FCD 302 is designed according to the EHEDG
guidelines, suitable for installation in environments with
high focus on ease of cleaning.
Mount the FCD 302 vertically on a wall or machine frame,
to ensure liquids drain o the enclosure. Orient the unit so
the cable glands are located at the base.
Use cable glands designed to meet hygienic application
requirements, for example Rittal HD 2410.110/120/130.
Hygienic-purpose cable glands ensure optimal ease of
cleaningin the installation.
NOTICE
Only frequency converters congured as hygienic
enclosure designation, FCD 302 P XXX T4 W69, have the
EHEDG certication.
130BC383.10
Illustration 2.8 Permitted Mounting Positions - Hygienic
Applications
2.3.4.2 Cleaning
The enclosure (IP66/NEMA type 4x indoor) provides
protection against dirt and water ingress. The enclosure is
suitable for cleaning methods and solvents used in food
and beverage plants. Use the solvent concentration
recommended by the manufacturer. Avoid high pressure
hot water cleaning at close proximity or of long duration,
because this method of cleaning can damage gaskets and
labels.
2.3.5 Tightening Torques
To compress the gasket between the two parts,
•Tighten the four connection screws to torque 2.8–
3.0 Nm (24.8–26.6 in-lb).
•Tighten these screws in diagonally opposite order.
•Tighten the two earthing spears to torque 3.0 Nm
(26.6 in-lb).
.
2.4 Electrical Installation
The frequency converter must be wired for operation in
the following manner:
•Wire the motor to the frequency converter output
terminals.
•Connect control and serial communication wiring.
•Wire the AC mains to the frequency converter
input terminals.
•After power has been applied, input and motor
power must be checked, and control terminals
programmed for intended functions.
This section provides detailed descriptions of the
requirements and procedures to accomplish these tasks.
Illustration 2.9 shows a basic electrical connection.
Installation Operating Guide
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 13
22

130BC384.10
3 phase
power
input
Mechanical
brake
+10Vdc
-10Vdc-
+10Vdc
0/4-20 mA
-10Vdc-
+10Vdc
0/4-20 mA
91 (L1)
92 (L2)
93 (L3)
95 (PE)
122(MBR+)
123(MBR-)
50 (+10 V OUT)
53 (A IN)
54 (A IN)
55 (COM A IN)
12 (+24 V OUT)
13 (+24 V OUT)
18 (D IN)
19 (D IN)
20 (COM D IN)
27 (D IN/OUT)
29 (D IN/OUT) 24V
OV
32 (D IN)
33 (D IN)
37 (D IN)
S201
S202 ON/I=0-20mA
OFF/U=0-10V
P 5-00
24V (NPN)
OV (PNP)
24V (NPN)
OV (PNP)
24V (NPN)
OV (PNP)
24V (NPN)
OV (PNP)
24V (NPN)
OV (PNP)
24V (NPN)
OV (PNP)
Switch Mode
Power Supply
10Vdc
15mA
24Vdc
600mA
(U) 96
(U) 97
(W) 98
(PE) 99 Motor
Brake
resistor
(R+) 82
(R-) 81
relay1
relay2
03
02
01
06
05
04
240Vac, 2A
240Vac, 2A
400Vac, 2A
Analog Output
0/4-20 mA
(COM A OUT) 39
(A OT) 42
ON=Terminated
OFF=Open
S801
S801 GX
(N RS-485) 69
(P RS-485) 68
5V
RS-485
Interface
(COM RS-485) 61
(PNP) = Source
(NPN) = Sink
RS-485
ON
1 2
ON
1 2
ON
1 2
0V
VCXA
Profibus
interface
GND1
GND1
RS485
66
63
62
67
GX
Illustration 2.9 Electrical Installation
Installation VLT®Decentral Drive FCD 302
14 Danfoss A/S © 05/2016 All rights reserved. MG04F402
22

130BC286.10
U
96
V
97
W
98
L1
L2
L3
L1
91
L2
92
L3
93
12
27
T1
T2
T3
NO
NC
NO
NC
L2
L3
PE
L1
41
33
5
3
1 2
4
6
34
42
1
2
1 Looping terminals
2 Circuit breaker
Illustration 2.10 Large Unit only: Circuit Breaker and Mains
Disconnect
L1
L2
L3
PE
U
96
V
97
W
98
L1
91
L2
92
L3
93
12
27
U
V
W
1 2
3 4
5
6
7 8
1
130BC287.10
1 Looping terminals
Illustration 2.11 Large Unit only: Service Switch at Mains with
Looping Terminals
2.4.1 Requirements
WARNING
EQUIPMENT HAZARD
Rotating shafts and electrical equipment can be
hazardous. All electrical work must conform to national
and local electrical codes. Installation, start-up, and
maintenance to be performed only by trained and
qualied personnel. Failure to follow these guidelines
could result in death or serious injury.
For your safety, comply with the following requirements:
•Electronic controls equipment is connected to
hazardous mains voltage. Take extreme
precautions against electrical hazards when
applying power to the unit.
•Wear safety glasses whenever working on electric
control or rotating equipment.
•Run motor cables from multiple frequency
converters separately. Induced voltage from
output motor cables run together can charge
equipment capacitors even with the equipment
turned o and locked out.
Overload and equipment protection
•An electronically activated function within the
frequency converter provides overload protection
for the motor. Set parameter 1-90 Motor Thermal
Protection to warning or trip as required. Refer to
the VLT®Decentral Drive FCD 302 Programming
Guide MG04GXYY for further information.
Parameter 1-90 Motor Thermal Protection measures
motor current and is internally set based on the
value in parameter 1-24 Motor Current. A 1.2 x FLA
(full load amps) service factor is built in and
maintained. Should the motor current increase
above that value, the overload calculates the level
of increase to activate timing for the trip
(controller output stop) function. The higher the
current draw, the quicker the trip response. The
overload provides Class 20 motor protection. See
chapter 7 Troubleshooting for details on the trip
function.
•Because the motor wiring carries high frequency
current, it is important that wiring for mains input
power, motor power, and control are run
separately. Use separated shielded wire or
metallic conduit. Failure to isolate power, motor,
and control wiring could result in less than
optimum equipment performance.
•When using cable trays, place sensitive cables
such as telephone or data cables in a separate
cable tray to the motor cable. If signal cables run
across power cables, these cables must cross at
an angle of 90°.
Wire type and ratings
•All wiring must comply with local and national
regulations regarding cross-section and ambient
temperature requirements.
•The screen must have low RF impedance, which
is achieved by a braided screen of copper,
aluminium or iron.
•Danfoss recommends that all power connections
are made with a minimum 75 °C (167 °F) rated
copper wire.
•See chapter 8.1 Electrical Data and Wire Sizes for
recommended wire sizes.
Cable glands
It must be assured that appropriate cable glands needed
for the environment are chosen and carefully mounted.
Installation Operating Guide
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 15
22

WARNING
HIGH VOLTAGE
Unplugging the electronic part may cause death, or
serious injury and damage to the frequency converter,
the motor, and the equipment operated by the motor.
•Do not plug/unplug the electronic part with
mains voltage switched on.
•Switch o mains voltage in the intended safe
way.
Installation VLT®Decentral Drive FCD 302
16 Danfoss A/S © 05/2016 All rights reserved. MG04F402
22

2.4.2 Location of Terminals
Illustration 2.12 Location of Terminals (Small Unit)
1 Digital and analog inputs/outputs 8 USB port
2 Safe stop, LCP connection, B-option 9 Standard bus/RS485
3 Relay 1 10 Probus
4 Relay 2 11 Ethernet port
5 Motor, mechanical brake, brake resistor 12 Ethernet port
6 Mains 13 Protective Earth (PE)
7 24 V DC back-up input
Illustration 2.13 Location of Terminals (Large Unit)
Installation Operating Guide
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 17
22

For both small and large unit, the service switch is
optional. The switch is shown mounted on the motor side.
Alternatively, the switch can be located on the mains side,
or omitted.
For the large unit, the circuit breaker is optional. The large
unit can be congured with either service switch or circuit
breaker, not both. The illustration shown is not cong-
urable in practice, but is displayed to show the respective
positions of components only.
2.4.3 Terminal Types
Motor, control, and mains terminals are spring loaded
(CAGE-CLAMP) type.
1. Open the contact by inserting a small screwdriver
into the slot above the contact, as shown in
Illustration 2.14.
2. Insert the stripped wire into the contact.
3. Remove the screwdriver to fasten the wire into
the contact.
4. Ensure that the contact is rmly established and
not loose. Loose wiring can result in equipment
faults or injury.
Illustration 2.14 Opening the Terminals
2.4.4 Motor Connection
WARNING
INDUCED VOLTAGE
Run output motor cables from multiple frequency
converters separately. Induced voltage from output
motor cables run together can charge equipment
capacitors even with the equipment turned o and
locked out. Failure to run output motor cables separately
could result in death or serious injury.
CAUTION
WIRING ISOLATION
Run input power, motor wiring, and control wiring in
three separate metallic conduits. Alternatively, use
separated shielded motor and control cables for high
frequency noise isolation. Failure to isolate power, motor
and control wiring can result in sub-optimal performance
of the frequency converter and associated equipment.
CAUTION
MOTOR PROTECTION
Protection against motor overload is not included in the
factory setting. If this function is desired, set
parameter 1-90 Motor Thermal Protection to trip or
warning. Refer to the VLT®Decentral Drive FCD 302
Programming Guide MG04GXYY for further information.
•Connect the motor to terminals 96, 97, 98.
•Connect earth to PE-terminal.
•Make sure that the screen of the motor cable is
properly earthed at both ends (motor and
frequency converter).
•For correct dimensioning of cable cross-section,
see chapter 8.1.1 Overview.
No.
96 97 98 Motor voltage 0-100% of mains voltage
U V W 3 wires out of motor
U1 V1 W1 6 wires out of motor
W2 U2 V2
U1 V1 W1 6 wires out of motor, Star connected
Connect U2, V2, W2 separately (optional terminal
block)
PE Earth connection
Table 2.1 Motor Terminals
NOTICE
Do not install power factor correction capacitors
between the frequency converter and the motor.
Do not wire a starting or pole-changing device between
the frequency converter and the motor.
Parallel connection of motors
The frequency converter can control several parallel-
connected motors. The total current consumption of the
motors must not exceed the rated output current IM,N for
the frequency converter.
Installation VLT®Decentral Drive FCD 302
18 Danfoss A/S © 05/2016 All rights reserved. MG04F402
22