WEG CFW501 User manual

Frequency Inverter
Convertidor de Frecuencia
Inversor de Frequência
CFW501
Motors | Automation | Energy | Transmission & Distribution | Coatings
User’s Manual
Manual del Usuario
Manual do Usuário
Language: English, Spanish, Portuguese

User's Manual
Series: CFW501
Language: English
Document: 10001991016 / 04
Models: Frame A ... D
Date: 06/2015

Summary of Reviews
English
The information below describes the reviews made in this manual.
Version Review Description
-R00 First edition
-R01 General review
-R02 General review
-R03 New options of the V/f and VVW Control Type included and modified
-R04 General review and inclusion of frame D
ATTENTION!
Check the frequency of the power supply.
The CFW501 inverters have the factory default parameters set for line
frequency of 60 Hz.
In case the power supply frequency is different from the 60 Hz, it is
necessary to set:
P0204 = 6 for 50 Hz.
It is only necessary to set these parameters once.
Refer to the programming manual of the CFW501 for further details about
the setting of parameter P0204.
NOTE!
The CFW501 inverter models with power supply 200...240 V are under
development.
For further information, contact the Sales Department of WEG Automation.

Index
English
1 SAFETY INSTRUCTIONS.....................................................................1
1.1 SAFETY WARNINGS IN THIS MANUAL....................................................1
1.2 SAFETY WARNINGS IN THE PRODUCT ..................................................1
1.3 PRELIMINARY RECOMMENDATIONS.....................................................2
2 GENERAL INFORMATION ...................................................................3
2.1 ABOUT THE MANUAL ...............................................................................3
2.2 ABOUT THE CFW501.................................................................................3
2.3 NOMENCLATURE ......................................................................................6
2.4 IDENTIFICATION LABELS.........................................................................7
2.5 RECEIVING AND STORAGE......................................................................7
3 INSTALLATION AND CONNECTION...................................................9
3.1 MECHANICAL INSTALLATION..................................................................9
3.1.1 Environmental Conditions ...............................................................9
3.1.2 Positioning and Mounting................................................................9
3.1.2.1 Cabinet Mounting ...............................................................10
3.1.2.2 Surface Mounting...............................................................10
3.1.2.3 DIN-Rail Mounting..............................................................10
3.2 ELECTRICAL INSTALLATION .................................................................10
3.2.1 Identification of the Power Terminals and Grounding Points .. 11
3.2.2 Power and Grounding Wiring, Circuit Breakers and Fuses...... 11
3.2.3 Power Connections........................................................................12
3.2.3.1 Input Connections..............................................................13
3.2.3.2 IT Networks.........................................................................13
3.2.3.3 Dynamic Braking................................................................14
3.2.3.4 Output Connections...........................................................15
3.2.4 Grounding Connections ................................................................16
3.2.5 Control Connections .....................................................................17
3.2.6 Cable Separation Distance...........................................................20
3.3 INSTALLATIONS ACCORDING TO EUROPEAN DIRECTIVE OF
ELECTROMAGNETIC COMPATIBILITY ......................................................21
3.3.1 Conformal Installation ..................................................................21
3.3.2 Emission and Immunity Levels.....................................................22
4 HMI (KEYPAD) AND BASIC PROGRAMMING ................................23
4.1 USE OF THE HMI TO OPERATE THE INVERTER ..................................23
4.2 INDICATIONS ON THE HMI DISPLAY ....................................................24
4.3 OPERATING MODES OF THE HMI ........................................................25
5 POWERING UP AND STARTUP.........................................................27
5.1 PREPARATION AND POWERING UP......................................................27
5.2 STARTUP ..................................................................................................28
5.2.1 STARTUP Menu ..............................................................................28
5.2.1.1 V/f Control Type (P0202 = 0) ..............................................28
5.2.1.2 VVW Control Type (P0202 = 3)..........................................30
5.2.2 Menu BASIC – Basic Application .................................................32

Index
English
6 TROUBLESHOOTING AND MAINTENANCE....................................33
6.1 FAULT AND ALARMS ...............................................................................33
6.2 SOLUTIONS FOR THE MOST FREQUENT PROBLEMS .......................33
6.3 DATA TO CONTACT THE TECHNICAL ASSISTANCE ...........................34
6.4 PREVENTIVE MAINTENANCE.................................................................34
6.5 CLEANING INSTRUCTIONS ...................................................................35
7 OPTIONAL KITS AND ACCESSORIES ...........................................36
7.1 OPTIONAL KITS .......................................................................................36
7.1.1 Protection Rate Nema1 ..................................................................36
7.2 ACCESSORIES..........................................................................................36
8 TECHNICAL SPECIFICATIONS ........................................................38
8.1 POWER DATA ...........................................................................................38
8.2 ELECTRONICS/GENERAL DATA............................................................38
8.2.1 Codes and Standards ....................................................................40
APPENDIX A – FIGURES.....................................................................129
APPENDIX B – TECHNICAL SPECIFICATIONS ................................133

CFW501 | 1
Safety Instructions
English
1 SAFETY INSTRUCTIONS
This manual contains the information necessary for the correct use of the frequency
inverter CFW501.
It was developed to be operated by people with proper technical training or qualification
to handle this kind of equipment. Those people must follow the safety instructions
defined by local standards. The noncompliance with the safety instructions may result
in death risks and/or damages to the equipment.
1.1 SAFETY WARNINGS IN THIS MANUAL
DANGER!
The procedures recommended in this warning aim at protecting the
user against death, serious injuries and considerable material damages.
ATTENTION!
The procedures recommended in this warning aim at preventing material
damages.
NOTE!
The information mentioned in this warning is important for the proper
understanding and good operation of the product.
1.2 SAFETY WARNINGS IN THE PRODUCT
High voltages present.
Components sensitive to electrostatic discharges. Do not touch them.
The connection to the protection grounding is required.
Connection of the shield to the grounding.

2 | CFW501
Safety Instructions
English
1.3 PRELIMINARY RECOMMENDATIONS
DANGER!
Always disconnect the general power supply before changing any electric
component associated to the inverter. Many components may remain
loaded with high voltages and/or moving (fans), even after the AC power
supply input is disconnected or turned off. Wait for at least ten minutes
in order to guarantee the full discharge of the capacitors. Always connect
the grounding point of the inverter to the protection grounding.
NOTES!
Frequency inverters may interfere in other electronic equipment. Observe
the recommendations of chapter 3 - Installation and Connection in order
to minimize these effects.
Read the entire manual before installing or operating this inverter.
Do not execute any applied potential test on the inverter!
If necessary, contact WEG.
ATTENTION!
The electronic cards have components sensitive to electrostatic
discharges.
Do not touch the components or connectors directly. If necessary, first
touch the grounding point of the inverter which must be connected to
the protection ground or use a proper grounding strap.

CFW501 | 3
General Information
English
2 GENERAL INFORMATION
2.1 ABOUT THE MANUAL
This manual contains information for the proper installation and operation of the inverter,
as well as start-up procedures, main technical features and how to identify the most
usual problems of the different models of inverters of the line CFW501.
ATTENTION!
The operation of this equipment requires detailed installation and
operation instructions provided in the user’s manual, programming manual
and communication manuals. The user’s manual and the quick reference
of the parameters are supplied at the purchase of the inverter, while the
guides are supplied with their respective accessories. Other manuals
are supplied in CD-ROM only, which comes with the inverter or can be
downloaded in WEG’s website - www.weg.net. This CD must be always
kept with this equipment. A printed copy of the files available in the CD
can be requested at your local WEG dealer.
NOTE!
It is not the intention of this manual to present all the possibilities for the
application of the CFW501, as well as WEG cannot take any liability for
the use of the CFW501 which is not based on this manual.
Part of the figures and tables are available in the appendixes, which are divided into
APPENDIX A for figures and APPENDIX B for technical specifications. The information
is presented in three languages.
2.2 ABOUT THE CFW501
The frequency inverter CFW501 is a high-performance product which allows the speed
and torque control of three-phase induction motors. This product provides the user
with the options of vector (VVW) or scalar (V/f) control, both programmable according
to the application.
In the vector mode (VVW), the operation is optimized for the motor in use, obtaining a
better performance in terms of speed regulation.
The scalar mode (V/f) is recommended for simpler applications, such as the activation
of most pumps and fans. The V/f mode is used when more than a motor is activated
by an inverter simultaneously (multimotor applications).

4 | CFW501
General Information
English
The frequency inverter CFW501 also has functions of PLC (Programmable Logic
Controller) by means of the SoftPLC (integrated) feature. For further details regarding
the programming of those functions, refer to the SoftPLC user's manual of the CFW501.
The main components of the CFW501 can be viewed in the block diagram figure 2.1
for Frames A, B and C, and figure 2.2 for Frame D.
Analog input
(AI1 and Ai2) (*)
Digital inputs
(DI1 to DI4) (*)
Supplies for electronics and interfaces
between power and control
RS-485
PC
POWER
Three-phase
rectifier
Internal
RFI filter
Motor
U/T1
V/T2
W/T3
DC+ DC-
BR
Inverter with
insulated gate bipolar
transistors and
current feedback
Power
supply
R/L1/L
S/L2/N
T/L3


= Bus connection CC (**)
= Connection for brake resistor (**)


Preload
Software WLP
SUPERDRIVE (*)
MODBUS
Capacitor bank link CC
Braking IGBT (available in the inverters
CFW501...DB...)
HMI
CPU
32 bits
"RISC" EEPROM
(memory)
User’s
plug-in
card
Interface
RS485
Analog
output
(AO1) (*)
Power supply 24 V
Power supply 10 V
Digital output
DO1 (RL1) and
DO3 (RL2)
Digital output
DO2 (TR) (*)
HMI (remote)
Power Supply (**)
PE
PE
Memory Card (MCard)
Accessory
CONTROL
CONTROL
RS-485 PLUG-IN
= Human-machine interface
(*) The number of analog/digital inputs/outputs, as well as other resources, may vary according to the plug-in module used. For
further information, refer to the guide supplied with the accessory or the CD-ROM.
(**) Not available in frame A.
Figure 2.1: Block diagram of CFW501 for Frames A, B and C

CFW501 | 5
General Information
English
Analog input
(AI1 and AI2) (*)
Digital inputs
(DI1 to DI4) (*)
Supplies for electronics and interfaces
between power and control
RS-485
PC
POWER
Three-phase
rectifier
Brake resistor (optional)
Inductor of the DC link (optional)
Internal RFI
filter Motor
U/T1
V/T2
W/T3
+UD -UD
BR
Inverter with
insulated gate bipolar
transistors and
current feedback
Power
supply
R/L1/L
S/L2/N
T/L3


= Bus connection CC (**)
= Connection for brake resistor (**)


Preload
Software WLP
SUPERDRIVE (*)
MODBUS
Capacitor bank link CC
Braking IGBT (available in the inverters
CFW500...DB...)
HMI
CPU
32 bits
"RISC"
EEPROM
(memory)
User’s
Plug-in
card
Interfaces
(RS-232,
RS-485
or USB)
Analog output
(AO1) (*)
Power supply 24 V
Power supply 10 V
Digital output
DO1 (RL1) and
DO3 (RL2)
Digital output
DO2 (TR) (*)
HMI (remote)
Power Supply (**)
PE
PE
Memory card (MCard)
Accessory
CONTROL
CONTROL
STANDARD PLUG-IN
= Human-machine interface
(*) The number of analog/digital inputs/outputs, as well as other resources, may vary according to the plug-in module used. For
further information, refer to the guide supplied with the accessory or the CD-ROM.
(**) Not available in frame A.
Figure 2.2: Block diagram of CFW501 for Frame D

6 | CFW501
General Information
English
2.3 NOMENCLATURE
Table 2.1: Nomenclature of the inverters CFW501
Product
and
Series
Identification of the Model
Brake (*) Protection
Rate (*)
Conducted
Emission
Level (*)
Hardware
Version
Special Software
Version
Frame Rating
Current
No of
Phases
Rating
Voltage
Ex.: CFW501 A02P6 T 4 NB 20 C2 --- --
Available options
CFW501
See table 2.2.Blank = standard
NB = without dynamic braking Sx = special software
DB = with dynamic braking Blank = CFW500-CRS485
plug-in module
20 = IP20 H00 = without plug-in
N1 = cabinet Nema1 (type 1 as per UL) (protection rate
according to standard IEC IP20)
C2 or C3 = for inverters with internal filter.
In order to comply with IEC 61800-3, refer to
table B.3 and check the operation conditions.
(*) The available options for each model are in table 2.2.
Table 2.2: Available options for each field of the nomenclature according to the rating current and
voltage of the inverter
Frame Output Rating
Current N° of Phases Rating Voltage
Available Options for the Remaining
Identification Codes of the Inverters
Brake Protection
Rate
Conducted
Emission Level
Hardware
Version
A
01P6 = 1.6 A
T = three-
phase power
supply
2 = 200...240 V
NB
20 or N1
C3
Blank or
H00
02P6 = 2.6 A
04P3 = 4.3 A
07P0 = 7.0 A
09P6 = 9.6 A
B
07P3 = 7.3 A
DB
10P0 = 10 A
16P0 = 16 A
C 24P0 = 24 A
A
01P0 = 1.0 A
4 = 380...480 V
NB
01P6 = 1.6 A
02P6 = 2.6 A
04P3 = 4.3 A
06P1 = 6.1 A
B
02P6 = 2.6 A
DB
04P3 = 4.3 A
06P5 = 6.5 A
10P0 = 10 A
C14P0 = 14 A C2
16P0 = 16 A
D24P0 = 24 A C3
31P0 = 31 A

CFW501 | 7
General Information
English
2.4 IDENTIFICATION LABELS
There are two identification labels: one complete nameplate, located on the side of the
inverter and a simplified label under the plug-in module. The label under the plug-in
module allows the identification of the most important characteristics of the inverter
even in inverters mounted side-by-side. For further details about the position of the
labels, see figure A.2.
Front Label of the CFW501 (Under the Plug-In Module)
Model (Smart code
of the inverter)
Stock item
Manufacturing date
Serial number
Side Label of the CFW501
Manufacturing date
Production order
Rated input data
(voltage, current
and frequency)
Rated input data
(voltage, current
and frequency)
Serial number
WEG stock item
Model (Smart code
of the inverter)
Figure 2.3: Description of the identification labels on the CFW501
2.5 RECEIVING AND STORAGE
The CFW501 is supplied packed in a cardboard box. On this package, there is an
identification label which is the same as the one attached to the side of the inverter.
Check if:
The identification of the CFW501 matches the model purchased.
Any damages occurred during transportation.
Report any damage immediately to the carrier.

8 | CFW501
General Information
English
If the CFW501 is not installed soon, store it in a clean and dry location (temperature
between -25 °C and 60 °C (-77 ºF and 140 ºF)), with a cover to prevent dust accumulation
inside it.
ATTENTION!
When the inverter is stored for a long period, it becomes necessary to
perform the capacitor reforming. Refer to the procedure recommended
in section 6.4 - Preventive Maintenance – of this manual.

CFW501 | 9
Installation and Connection
English
3 INSTALLATION AND CONNECTION
3.1 MECHANICAL INSTALLATION
3.1.1 Environmental Conditions
Avoid:
Direct exposure to sunlight, rain, high humidity or sea-air.
Inflammable or corrosive liquids or gases.
Excessive vibration.
Dust, metallic particles or oil mist.
Environmental conditions permitted for the operation of the inverter:
Temperature surrounding the inverter: from 0 ºC (32 ºF) to the nominal temperature
specified in table B.2.
For temperatures surrounding the inverter higher than the specifications above, it is
necessary to apply a 2 % of current derating for each Celsius degree, limited to an
increase of 10 ºC (50 ºF).
Air relative humidity: 5 % to 95 % non-condensing.
Maximum altitude: up to 1000 m (3.300 ft) - nominal conditions.
1000 m to 4000 m (3.300 ft to 13.200 ft) - 1 % of current derating for each 100 m
(328 ft) above 1000 m of altitude.
From 2000 m to 4000 m (6.600 ft to 13.200 ft) above sea level - maximum voltage
reduction (240 V for 200...240 V models and 480 V for 380...480 V models) of 1.1 %
for each 100 m (330 ft) above 2000 m (6.600 ft).
Pollution degree: 2 (according to EN 50178 and UL 508C), with non-conductive
pollution. Condensation must not originate conduction through the accumulated
residues.
3.1.2 Positioning and Mounting
The external dimensions and the drilling for the mounting, as well as the net weight
(mass) of the inverter are presented in figure B.1. For further details of each frame, refer
to figure B.4, figure B.5, figure B.6 and figure B.7.
Mount the inverter in the upright position on a flat and vertical surface. First, put the
screws on the surface where the inverter will be installed, install the inverter and then
tighten the screws observing the maximum torque for the screws indicated in figure B.1.
Allow the minimum clearances indicated in figure B.2, in order to allow the cooling air
circulation. Do not install heat sensitive components right above the inverter.
ATTENTION!
When installing two or more inverters vertically, respect the minimum
clearance A + B (as per figure 3.2) and provide an air deflecting plate
so that the heat rising up from the bottom inverter does not affect the
top inverter.
Provide independent conduits for the physical separation of signal,
control, and power cables (refer to the section 3.2 - Electrical Installation).

10 | CFW501
Installation and Connection
English
3.1.2.1 Cabinet Mounting
For inverters installed inside cabinets or metallic boxes, provide proper exhaustion, so
that the temperature remains within the allowed range. Refer to the dissipated powers
in table B.2.
As a reference, table 3.1 shows the air flow of nominal ventilation for each frame.
Cooling Method: internal fan with air flow upwards.
Table 3.1: Air flow of the internal fan
Frame CFM I/s m3/min
A20 9.4 0.56
B30 14.1 0.85
C30 14.1 0.85
D (T2)*100 47.2 2.83
D (T4)** 80 37.8 2.27
(*) T2 - CFW501 Frame D line 200 V (200...240 V).
(**) T4 - CFW501 Frame D line 400 V (380...480 V).
3.1.2.2 Surface Mounting
Figure B.2 (a) illustrates the procedure for the installation of the CFW501 on the mounting
surface.
3.1.2.3 DIN-Rail Mounting
The inverter CFW501 can also be mounted directly on 35-mm rail as per DIN EN 50.022.
For this mounting, you must first position the lock(*) down and then place the inverter
on the rail, position the lock(*) up, fixing the inverter.
(*) The fastening lock of the inverter on the rail is indicated with a screwdriver in figure B.2 (b).
3.2 ELECTRICAL INSTALLATION
DANGER!
The following information is merely a guide for proper installation.
Comply with applicable local regulations for electrical installations.
Make sure the power supply is disconnected before starting the
installation.
The CFW501 must not be used as an emergency stop device. Provide
other devices for that purpose.
ATTENTION!
Integral solid state short circuit protection does not provide branch circuit
protection. Branch circuit protection must be provided in accordance
with applicable local codes.

CFW501 | 11
Installation and Connection
English
3.2.1 Identification of the Power Terminals and Grounding Points
The power terminals can be of different sizes and configurations, depending on the
model of the inverter, according to figure B.3. The location of the power, grounding and
control connections are shown in figure A.3.
Description of the power terminals:
L/L1, N/L2 and L3 (R, S, T): AC power supply. Some models of voltage 200-240 V
(see option of models in ta ble B.1) can operate in 2 or 3 phases (single-phase/three-
phase inverters) without derating of the rated current. In this case, the AC power
supply can be connected to two of the three input terminals without distinction. For
the single-phase models only, the power voltage must be connected to L/L1 and N/L2.
U, V, W: connection for the motor.
-UD: negative pole of the voltage of the DC bus.
BR: connection of the brake resistor.
+UD: positive pole of the voltage of the DC bus.
DCR: connection for the external DC link inductor. The use of internal inductor is
not allowed on the CFW501.
The maximum torque of the power terminals and grounding points must be checked
in figure B.3.
3.2.2 Power and Grounding Wiring, Circuit Breakers and Fuses
ATTENTION!
Use proper cable lugs for the power and grounding connection cables.
Refer to ta ble B.1 for recommended wiring, circuit breakers and fuses.
Keep sensitive equipment and wiring at a minimum distance of 0.25 m
from the inverter and from the cables connecting the inverter to the motor.
It is not recommended the use of mini circuit breakers (MDU), because
of the actuation level of the magnet.
ATTENTION!
Residual Current Device (RCD):
When installing an RCD to guard against electrical shock, only devices
with a trip current of 300 mA should be used on the supply side of
the inverter.
Depending on the installation (motor cable length, cable type,
multimotor configuration, etc.), the RCD protection may be activated.
Contact the RCD manufacturer for selecting the most appropriate
device to be used with inverters.
NOTE!
The wire gauges listed in table B.1 are orientative values. Installation
conditions and the maximum permitted voltage drop must be
considered for the proper wiring sizing.
In order to meet UL requirements, use ultra fast fuses at the inverter
supply with a current not higher than the values presented in tabl e B.1.

12 | CFW501
Installation and Connection
English
3.2.3 Power Connections
Shield
PE
Disconnecting
switch Fuses
R
S
T
Input
power
supply
PE WVU
RBRS T U-Ud +Ud V W PEPE
(*)
(*) The power terminals -Ud, BR and +Ud are not available in models of frame A.
(a) Frame A, B and C
Shield
PE
Disconnecting
switch Fuses
R
S
T
Input power
supply
PE WVU
RBR DCR S T U-Ud +Ud V W
PEPE
(b) Frame D
Figure 3.1: (a) and (b) Power and grounding connections

CFW501 | 13
Installation and Connection
English
3.2.3.1 Input Connections
DANGER!
Provide a disconnect device for the inverter power supply. This device
must cut off the power supply whenever necessary (during maintenance
for instance).
ATTENTION!
The power supply that feeds the inverter must have a grounded
neutral. In case of IT networks, follow the instructions described in
item 3.2.3.3 - IT Networks.
NOTE!
The input power supply voltage must be compatible with the inverter
rated voltage.
Power factor correction capacitors are not needed at the inverter input
(L/L1, N/L2, L3 or R, S, T) and must not be installed at the output (U, V, W).
The maximum impedance of the input power supply permitted is 1 %
of the voltage drop. It is not permitted the use of inducer on the DC link.
Power supply capacity
The CFW501 is suitable for use in a circuit capable of delivering not more than
30.000 Arms symmetrical (200 to 480 V).
In case the CFW501 is installed in power supplies with current capacity over 30.000 Arms,
it is necessary to use proper protection circuits for those power supplies, such as fuses
or circuit breakers.
3.2.3.2 IT Networks
ATTENTION!
When inverters with internal RFI filter are used in IT networks (neuter not
grounded or grounded through a high ohmic value resistor), always set
the grounding switch of the capacitors of the internal RFI filter to the NC
position (as shown in figure A.2), since those kinds of network cause
damage to the filter capacitors of the inverter.

14 | CFW501
Installation and Connection
English
3.2.3.3 Dynamic Braking
NOTE!
The dynamic braking is available from frame B.
Refer to table B.1 for the following specifications of the dynamic braking: maximum
current, resistance, effective current (*) and cable gauge.
Input power
supply
Thermostat Brake
resistor
Relay
Command
power supply
Contactor
BR +Ud
R
S
T
Figure 3.2: Installation of brake resistor
(*) The effective braking current can be calculated as follows:
Ieffective = Imax . tbr (min)
√ 5
seeing that: tbr corresponds to the sum of the braking actuation times during the most
severe cycle of five minutes.
The power of the brake resistor must be calculated considering the deceleration time,
the inertia of the load and of the resistive torque.

CFW501 | 15
Installation and Connection
English
Procedure to use the dynamic braking:
Connect the brake resistor between the power terminals +Ud and BR.
Use a twisted cable for the connection. Separate these cables from the signal and
control wiring.
Dimension the cables according to the application, observing the maximum and
effective currents.
If the brake resistor is mounted within the cabinet of the inverter, consider its energy
when dimensioning the ventilation of the cabinet.
DANGER!
The internal braking circuit and the resistor may be damaged if the latter is
not properly dimensioned and/or if the voltage of the input power supply
exceeds the maximum value permitted. In order to avoid the destruction
of the resistor or risk of fire, the only guaranteed method is the inclusion
of a thermal relay in series with the resistor and/or a thermostat in contact
with its housing, connected in such a way to disconnect the input power
supply of the inverter in case of overload, as shown in figure 3.2.
Set P0151 at maximum value when using dynamic braking.
The voltage level on the DC bus for activation of the dynamic braking is defined by
the parameter P0153 (level of the dynamic braking).
Refer to the CFW501 programming manual.
3.2.3.4 Output Connections
ATTENTION!
The inverter has an electronic motor overload protection that must be
adjusted according to the driven motor. When several motors are connected
to the same inverter, install individual overload relays for each motor.
The motor overload protection available on the CFW501 complies with
standard UL508C if the trip current (P0156) is set for at least 1.1 times
the motor rated current (P0401).
ATTENTION!
If a disconnect switch or a contactor is installed at the power supply
between the inverter and the motor, never operate it with the motor turning
or with voltage at the inverter output.
The characteristics of the cable used to connect the motor to the inverter, as well
as its interconnection and routing, are extremely important to avoid electromagnetic
interference in other equipment and not to affect the life cycle of windings and bearings
of the controlled motors.
Keep motor cables away from other cables (signal cables, sensor cables, control cables,
etc.), according to item 3.2.6 - Cable Separation Distance.
Connect a fourth cable between the motor ground and the inverter ground.