Larsen & Toubro C*2000 Series User manual

Read this manual carefully before installation, wiring, operating, servicing or inspecting this equipment. Keep this manual within easy reach for quick reference.User ManualVariable Frequency Drive0.1-11kW (230V, 415V)

Safety Instructions
i
Cx2000 AC Drive
Thank you for purchasing L&T inverter!
Safety Instructions
 Read this manual carefully before installing, wiring, operating, servicing or inspecting this equipment.
 The safety instructions are divided into such two levels as Warning and Caution in the instruction
manual.
WARNING: Improper operation may result in
serious personal injury or death.
CAUTION: Improper operation may result in
slight to medium personal injury or property
damage.
 Throughout this manual we use the following two illustrations to make you aware of safety
considerations:
Identifies potential hazards under certain conditions. Read the message and follow the
instructions carefully.
Identifies shock hazards under certain conditions.
Particular attention should be directed because dangerous voltage may be present.
 Keep operating instructions handy for quick reference.
 Read this manual carefully to maximize the performance of LTVF-Cx2000 series inverter and
ensure its safe use.
WARNING
 Do not remove the cover while power is applied or the unit is in operation.
Otherwise, electric shock could occur.
 Do not run the inverter with the front cover removed.
Otherwise, you may get an electric shock due to high voltage terminals or charged capacitor exposure.
 Do not remove the cover except for periodic inspections or wiring, even if the input power is
not applied.
Otherwise, you may access the charged circuits and get an electric shock.

Safety Instructions
ii
Cx2000 AC Drive
 Wiring and periodic inspections should be performed at least 10 minutes after
disconnecting the input power and after checking the DC link voltage is discharged with a meter
(below DC 30V).
Otherwise, you may get an electric shock.
 Operate the switches with dry hands.
Otherwise, you may get an electric shock.
 Do not use the cable when its insulating tube is damaged.
Otherwise, you may get an electric shock.
 Do not subject the cables to heavy loads.
Otherwise, you may get an electric shock.
CAUTION
 Install the inverter on a non-flammable surface.
Do not place flammable material nearby. Otherwise, fire could occur.
 Disconnect the input power if the inverter gets damaged.
Otherwise, it could result in fire.
 Do not touch the inverter if it is supplied with electricity or the power is cut off for a few
moments.
Because the inverter is under high temperature status, it may cause scald.
 If the inverter is damaged or the part is damaged, do not operate the inverter even if the
installation is complete.
Otherwise, electric shock could occur.
 Do not allow screw, metal, water, other conductive objects, oil and flammable objects into the
inverter.
Otherwise, fire could occur.
[WARNING]
Risk of injury or Electric Shock: Read the manual and follow the safety instruction before use.
Risk of Electric Shock: More than one disconnect switch may be required to de-energize the equipment before
servicing.
Risk of Electric Shock: Before opening the cover, disconnect all power and wait at least 10 minutes.
Risk of Electric Shock: Securely ground (earth) the inverter .

Safety Instructions
iii
Cx2000 AC Drive
OTHER PRECAUTIONS
(1) Handling and installation
 Handle according to weight of the product.
 Do not stack the inverter boxes higher than the number recommended.
 Install according to instructions specified in this manual.
 Do not open the cover during delivery.
 Do not place heavy items on the inverter.
 Check the inverter mounting orientation is correct.
 The inverter is precise equipment. So do not drop the inverter or subject it to impact.
 Follow your national electrical code for grounding. Recommended ground impedance for 230V
Drives is below 100 ohm and for 415V class below 10 ohm.
 This series inverter contains ESD sensitive parts. Take protective measures against ESD
before touching the PCB for inspection or installation.
Use the inverter under the following environmental conditions:
Environment
Surrounding temperature
- 10 C ~ +50 C (non-freezing)
Relative humidity
90% RH or less (non-condensing)
Storage temperature
- 20 C ~ +65 C
Environment
Protected from corrosive gas, combustible
gas, oil mist or dust.
Altitude, vibration
Max. 1,000m above sea level, Max. 5.9m/
sec²(=0.6g) or less
Atmospheric pressure
70 ~ 106 kPa
(2) Wiring
 Do not connect a power factor correction capacitor, surge suppressor, or RFI filter to the output of
the inverter.
 The connection orientation of the output cables U, V, W to the motor will affect the direction of
rotation of the motor.
 Incorrect terminal wiring could result in the equipment damage.
 Wrong connection of input terminal (R, S, T) and output terminal (U, V, W) will damage the
inverter.
 Only authorized personnel familiar with L&T inverter should perform wiring and inspections.
 Always install the inverter before wiring. Otherwise, you may get an electric shock or have bodily
injury.

Safety Instructions
iv
Cx2000 AC Drive
(3) Trial run
 Check all parameters during operations. Changing parameter values might be required depending
on the load.
 Always apply permissible range of voltage to each terminal as indicated in this manual. Otherwise,
it could lead to inverter damage.
(4) Operation methods
 When the Auto restart function is selected, stay away from the equipment as a motor will restart s
uddenly after an alarm stop.
 The Stop key on the keypad is valid only when the appropriate function setting has been
made. Prepare an emergency Stop switch separately.
 If an alarm reset is made with the reference signal present, a sudden start will occur. Check that
the reference signal is turned off in advance. Otherwise an accident could occur.
 Do not modify or alter anything inside the inverter.
 Motor might not be protected by electronic thermal function of inverter.
 Do not use a magnetic contactor on the inverter input for frequent starting/stopping of the inverter.
 Use a noise filter to reduce the effect of electromagnetic interference. Otherwise nearby electronic
equipment may be affected.
 In case of input voltage unbalance, install AC reactor. Power Factor capacitors and generators
may become overheated and damaged due to potential high frequency noise transmitted from
inverter.
 Parameters will be set to default settings after parameter initializing. Do re-set necessary
parameters before starting the inverter.
 Inverter can easily be set to high-speed operations, Verify capability of motor or machinery prior to
operating unit.
 Stopping torque is not produced when using the DC-Break function. Install separate equipment
when stopping torque is needed.
(5) Fault prevention precautions
 Provide a safety backup such as an emergency brake which will prevent the machine and
equipment from hazardous conditions if the inverter fails
(6) Maintenance, inspection and parts replacement
 Do not conduct a megger (insulation resistance) test on the control circuit of the inverter.
 Refer to Chapter 12 for periodic inspection (parts replacement)

Safety Instructions
v
Cx2000 AC Drive
(7) Disposal
 Handle the inverter as an industrial waste when disposing of it.
(8) General instructions
 Many of the diagrams and drawings in this instruction manual show the inverter without a
circuit breaker, a cover or partially open. Never run the inverter like this. Always place the
cover with circuit breakers and follow this instruction manual when operating the inverter.

Instruction Manual
vi
Cx2000 AC Drive
Instruction Manual…
 The instruction manual provides the overview of the LTVF-Cx2000 inverters, including the
specification, installation, operation, functions, maintenance and etc. The instruction manual
also shows the inexperienced operators how to operate the inverters safely and correctly.
 Please read the instruction manual carefully.
 Contents of the instructions:
Chapter
Title
Contents
1
Basic information
Safety rules and information to be mastered before use.
2
Installation wiring
Providing operation environment, installation method, power and
control terminal wiring to inverter.
3
Peripheral equipment
Peripheral equipments connected with the inputs and outputs of
the inverter.
4
Parameter setting
Displaying of panel of inverter and operation of key.
5
Parameter list
Detailed parameters list of inverter.
6
Control block diagram
Flow chart of control modules.
7
Basic function
Basic functions including frequency setting, operating commands
and so on.
8
Application function
Necessary functions during operation of inverter.
9
Monitoring function
Monitoring of operation status and fault information
10
Protection function
Protection functions of motor and inverter.
11
Communication
function
The specification and instructions of the RS-485 communication.
12
Troubleshooting &
Maintenance
How to solve problems when there is a fault or the inverter is
abnormal.
13
Product specification a
nd option
Control specification of inverter, input and output rated and
specification, EMC wave filter, DB resistor, remote keypad etc.

Content
vii
Cx2000 AC Drive
CHAPTER 1
Basic information & precautions
1.1
Important precautions
- - - - - - - - - - - - - - -
1-1
1.2
Product Details
- - - - - - - - - - - - - - -
1-2
1.3
Product assembling & disassembling
- - - - - - - - - - - - - - -
1-4
CHAPTER 2
Installation & Wiring
2.1
Installation precautions
- - - - - - - - - - - - - - -
2-1
2.2
External sizes
- - - - - - - - - - - - - - -
2-3
2.3
Terminal wiring
- - - - - - - - - - - - - - -
2-6
2.4
Specifications for power terminal block
wiring
- - - - - - - - - - - - - - -
2-8
2.5
Control terminal specification
- - - - - - - - - - - - - - -
2-11
2.6
PNP/NPN selection and analog input V/I
selection
- - - - - - - - - - - - - - -
2-12
CHAPTER 3
Basic configuration
3.1
Connection of peripheral devices to the
inverter
- - - - - - - - - - - - - - -
3-1
3.2
Recommended MCCB
- - - - - - - - - - - - - - -
3-2
3.3
Recommendable Fuse, Reactors
- - - - - - - - - - - - - - -
3-3
CHAPTER 4
Programming Keypad & Basic operation
4.1
Keypad structure
- - - - - - - - - - - - - - -
4-1
4.2
Alpha-numeric table
- - - - - - - - - - - - - - -
4-2
4.3
Moving to other parameter groups
- - - - - - - - - - - - - - -
4-3
4.4
How to change the codes in a group
- - - - - - - - - - - - - - -
4-5
4.5
Parameter setting
- - - - - - - - - - - - - - -
4-7
4.6
Monitoring of operation status
- - - - - - - - - - - - - - -
4-10
4.7
Frequency Setting and Basic Operation
- - - - - - - - - - - - - - -
4-13
CHAPTER 5
Function list
CHAPTER 6
CONTROL BLOCK DIAGRAM
6.1
Frequency setting
- - - - - - - - - - - - - - -
6-2
6.2
Drive command setting
- - - - - - - - - - - - - - -
6-4
6.3
Accel/Decel setting and V/F control
- - - - - - - - - - - - - - -
6-5
CHAPTER 7
Basic Functions
7.1
Frequency mode
- - - - - - - - - - - - - - -
7-1
7.2
Multi-Step Frequency setting
- - - - - - - - - - - - - - -
7-7
7.3
Operating command setting method
- - - - - - - - - - - - - - -
7-8
7.4
Accel/Decel time and pattern setting
- - - - - - - - - - - - - - -
7-12
7.5
V/F control
- - - - - - - - - - - - - - -
7-17
7.6
Stop method select
- - - - - - - - - - - - - - -
7-20

Content
viii
Cx2000 AC Drive
7.7
CHAPTER 8
Frequency limit
Advanced functions
- - - - - - - - - - - - - - -
7-21
8.1
DC brake
- - - - - - - - - - - - - - -
8-1
8.2
Jog operation
- - - - - - - - - - - - - - -
8-3
8.3
UP-DOWN Drive
- - - - - - - - - - - - - - -
8-4
8.4
3-Wire
- - - - - - - - - - - - - - -
8-7
8.5
Dwell operation
- - - - - - - - - - - - - - -
8-7
8.6
Slip compensation
- - - - - - - - - - - - - - -
8-8
8.7
PID control
- - - - - - - - - - - - - - -
8-10
8.8
Auto-tuning
- - - - - - - - - - - - - - -
8-14
8.9
Sensorless Vector Control
- - - - - - - - - - - - - - -
8-15
8.10
Energy-saving operation
- - - - - - - - - - - - - - -
8-17
8.11
Speed search
- - - - - - - - - - - - - - -
8-17
8.12
Auto restart try
- - - - - - - - - - - - - - -
8-19
8.13
Operating sound select
- - - - - - - - - - - - - - -
8-20
8.14
2nd motor operation
- - - - - - - - - - - - - - -
8-21
8.15
HD/ND Select
- - - - - - - - - - - - - - -
8-22
8.16
Frequency setting and 2nd drive method
select
- - - - - - - - - - - - - - -
8-22
8.17
Over voltage trip prevention deceleration
and Power Braking
- - - - - - - - - - - - - - -
8-25
8.18
External brake control
- - - - - - - - - - - - - - -
8-26
8.19
Kinetic energy buffering
- - - - - - - - - - - - - - -
8-27
8.20
DRAW drive
- - - - - - - - - - - - - - -
8-27
8.21
2 Phase PWM drive
- - - - - - - - - - - - - - -
8-29
8.22
Cooling fan control
- - - - - - - - - - - - - - -
8-29
8.23
Operating mode select when cooling fan
trip occurs
- - - - - - - - - - - - - - -
8-29
8.24
Parameter read/write
- - - - - - - - - - - - - - -
8-30
8.25
Parameter Initialize / Lock
- - - - - - - - - - - - - - -
8-30
8.26
Start voltage for dynamic braking
- - - - - - - - - - - - - - -
8-32
CHAPTER 9
Monitoring
9.1
Operating status monitoring
- - - - - - - - - - - - - - -
9-1
9.2
Monitoring the I/O terminal
- - - - - - - - - - - - - - -
9-3
9.3
Monitoring fault condition
- - - - - - - - - - - - - - -
9-4
9.4
Analog Output
- - - - - - - - - - - - - - -
9-5
9.5
Multi-function output terminal and Relay
- - - - - - - - - - - - - -
9-6
Protective functions

Content
ix
Cx2000 AC Drive
CHAPTER 10
10.1
Electronic Thermal
- - - - - - - - - - - - - - -
10-1
10.2
Overload Warning and trip
- - - - - - - - - - - - - - -
10-2
10.3
Stall prevention
- - - - - - - - - - - - - - -
10-3
10.4
Output phase loss protection
- - - - - - - - - - - - - - -
10-5
10.5
External trip signal
- - - - - - - - - - - - - - -
10-5
10.6
Inverter Overload
- - - - - - - - - - - - - - -
10-6
10.7
Speed command loss
- - - - - - - - - - - - - - -
10-7
10.8
DB Resistor Enable Duty setting
- - - - - - - - - - - - - - -
10-8
CHAPTER 11
Communication
11.1
Introduction
- - - - - - - - - - - - - - -
11-1
11.2
Specification
- - - - - - - - - - - - - - -
11-1
11.3
Installation
- - - - - - - - - - - - - - -
11-2
11.4
Operation
- - - - - - - - - - - - - - -
11-2
11.5
Communication protocol (MODBUS-
RTU)
- - - - - - - - - - - - - - -
11-3
11.6
Parameter code list (Common area)
- - - - - - - - - - - - - - -
11-4
11.7
Troubleshooting
- - - - - - - - - - - - - - -
11-6
11.8
Miscellaneous(ASCII CODE LIST)
- - - - - - - - - - - - - - -
11-7
CHAPTER 12
Troubleshooting & Maintenance
12.1
Protective functions.
- - - - - - - - - - - - - - -
12-1
12.2
Fault remedy
- - - - - - - - - - - - - - -
12-5
12.3
Precautions for maintenance and
inspection
- - - - - - - - - - - - - - -
12-8
12.4
Check points
- - - - - - - - - - - - - - -
12-8
12.5
Part replacements
- - - - - - - - - - - - - - -
12-8
CHAPTER 13
Specifications
13.1
Basic Specification
- - - - - - - - - - - - - - -
13-1
13.2
Rated current of inverter decreasing
- - - - - - - - - - - - - - -
13-4
13.3
Temperature Derating Information for
side-by-side mounting
- - - - - - - - - - - - - - -
13-6
13.4
Braking resistor
- - - - - - - - - - - - - - -
13-6
13.5
Remote Keypad
- - - - - - - - - - - - - - -
13-7

Chapter 1 basic information & precautions
1-1
Cx2000 AC Drive
1. BASIC INFORMATION & PRECAUTIONS
1.1 Important precautions
Inspect the inverter for any damage that may have occurred during shipping.
To verify the inverter unit is the correct one for the application you need, check the inverter type, output
ratings on the nameplate and the inverter is intact.
MOEL : LTVF-C40010BAA
APPLICABLE MOTOR : 3.7kW (ND) /4.0kW (HD)
INPUT : 380-480V 3 Phase 50/60Hz 14 A/10.4A
OUTPUT : 0-Input V 3 Phase 0.01-400Hz 10A/08A
MASS : 1.97 kg S/w Ver : 1.06
S/N : 550390700DC
Enclosure : IP20
LTVF - C 4 0002 B AA
L&T Variable
Frequency
Drive
Cx2000
Series
1: Single Phase
2: Three Phase 230V
4: Three Phase 415V
Normal Duty Ampere
Round Off Values (HD
Current for 1 Phase VFD)
B: IP 20
Reserved
Note: 1)
If you have found any discrepancy, damage, etc., please contact us (refer to the
back cover of the Manual).
Peripheral
equipment
Be sure of inverter types and select peripheral equipment according to the capacity.
Installation
To operate the inverter with high performance for a long time, install the inverter in a proper
place in the correct direction and with proper clearances
Wiring
Connect the power supply, motor and operation signals to the terminal block. Note that
incorrect connection may damage the inverter and peripheral devices
Model Name
Enclosure Type
Serial Number
Power source specification
Output specification
Normal Duty Amps/
Heavy Duty Amps
Software Version

Chapter 1 basic information & precautions
1-2
Cx2000 AC Drive
1.2 Product Details
A –Mounting hole
B –Heat sink
C –Button cover
D –Terminal cover
E –Screw M3
F –Front cover
G –Sheath
H –Indicator light
I -Fan
J –Fan cover

Chapter 1 basic information & precautions
1-3
Cx2000 AC Drive
A –Download interface
B –PNP/NPN select switch
C –Analog Input V/I select
D –Control terminal
E –Power supply terminal
F –Ground terminal

Chapter 1 basic information & precautions
1-4
Cx2000 AC Drive
1.3 Product assembling & disassembling
 To remove the front cover: Press the both indented sides of the cover lightly and pull up.
 To change the inverter fan: Press the both sides of bottom cover lightly and pull out to your
side.

Chapter 2 INSTALLATION & WIRING
2-1
Cx2000 AC Drive
2 INSTALLATION & WIRING
2.1 Installation precautions
 Handle the inverter with care to prevent damage to the plastic components. Do not hold the inverter by the
front cover. It may fall off.
 Install the inverter in a place where it is immune to vibration or extrusion under allowable temperature (-
10 C~ 50 C)
 The installation environment of inverter will influence its service life directly, so the inverter shall be used in a
condition with standard specification
<Ambient Temp Checking Location>
 The inverter will be very hot during operation. Install it on a non-combustible surface, far away from hot
sources and inflammables.
 Mount the inverter on a flat, vertical and level surface. Inverter orientation must be vertical. Also leave
sufficient clearances around the inverter.
 Protect from moisture and direct sunlight.
10cm
3cm
3cm
10cm
10cm
3cm
2mm
10cm
3cm
Caution

Chapter 2 INSTALLATION & WIRING
2-2
Cx2000 AC Drive
 When two or more inverters are installed, the inverters must be installed in proper positions away
from the outlet, whose distance shall be 2mm or more (refer to the following figure)
 Installed the inverter using screws or bolts to insure the inverter is firmly fastened.
 Two or more inverters are installed in a location where ambient temperature is over 30 ℃ ，please
refer to temperature derating curve in chapter 13.3.
< For installing multiple inverters in a panel >
Proper Installation Improper Installation
Caution
Take caution on proper heat ventilation when arraning control cabinet to form logical air
convection to reduce the heat production of the inverter.
Proper Installation Improper Installation

Chapter 2 INSTALLATION & WIRING
2-3
Cx2000 AC Drive
2.2 External sizes
LTVF-C10005BAA LTVF-C10008BAA LTVF-C20010BAA
LTVF-C20012BAA LTVF-C40005BAA LTVF-C40007BAA
LTVF-C10001BAA LTVF-C10002BAA LTVF-C10003BAA
LTVF-C20001BAA LTVF-C20002BAA LTVF-C20003BAA
LTVF-C20006BAA LTVF-C40002BAA LTVF-C40003BAA

Chapter 2 INSTALLATION & WIRING
2-4
Cx2000 AC Drive
LTVF-C20030BAA
LTVF-C20040BAA
LTVF-C40016BAA
LTVF-C40016BAA
LTVF-C10011BAA
LTVF-C20018BAA
LTVF-C40010BAA

Chapter 2 INSTALLATION & WIRING
2-5
Cx2000 AC Drive
Inverter
Power
[kW]
W
[mm]
W1
[mm]
H
[mm]
H1
[mm]
D
[mm]
Φ
[mm]
A
[mm]
B
[mm]
Weight
[kg]
LTVF-C10001BAA
0.1
68
63.5
128
124.5
93
4.2
4.5
4.2
0.55
LTVF-C10002BAA
0.2
68
63.5
128
124.5
93
4.2
4.5
4.2
0.55
LTVF-C10003BAA
0.4
68
63.5
128
124.5
128
4.2
4.5
4.2
0.8
LTVF-C10005BAA
0.75
100
91
128
120
130
4.5
4.5
4.5
1.22
LTVF-C10008BAA
1.5
100
91
128
120
145
4.5
4.5
4.5
1.42
LTVF-C10011BAA
2.2
140
132
128
120
145
4.5
4
4.5
1.97
LTVF-C20001BAA
0.1
68
63.5
128
124.5
93
4.2
4.5
4.2
0.55
LTVF-C20002BAA
0.2
68
63.5
128
124.5
93
4.2
4.5
4.2
0.55
LTVF-C20003BAA
0.4
68
63.5
128
124.5
128
4.2
4.5
4.2
0.8
LTVF-C20006BAA
0.75
68
63.5
128
124.5
128
4.2
4.5
4.2
0.8
LTVF-C20010BAA
1.5
100
91
128
120
130
4.5
4.5
4.5
1.22
LTVF-C20012BAA
2.2
100
91
128
120
145
4.5
4.5
4.5
1.42
LTVF-C20018BAA
3.7
140
132
128
120
145
4.5
4
4.5
1.97
LTVF-C20030BAA
5.5
160
137
232
216.5
141
5
10.5
5
3.3
LTVF-C20040BAA
7.5
160
137
232
216.5
141
5
10.5
5
3.3
LTVF-C40002BAA
0.4
68
63.5
128
124.5
128
4.2
4.5
4.2
0.8
LTVF-C40003BAA
0.75
68
63.5
128
124.5
128
4.2
4.5
4.2
0.8
LTVF-C40005BAA
1.5
100
91
128
120
130
4.5
4.5
4.5
1.22
LTVF-C40007BAA
2.2
100
91
128
120
145
4.5
4.5
4.5
1.42
LTVF-C40010BAA
3.7
140
132
128
120
145
4.5
4
4.5
1.97
LTVF-C40016BAA
5.5
160
137
232
216.5
141
5
10.5
5
3.3
LTVF-C40023BAA
7.5
160
137
232
216.5
141
5
10.5
5
3.4

Chapter 2 INSTALLATION & WIRING
2-6
Cx2000 AC Drive
2.3 Terminal wiring
Control terminal
Wiring of power supply terminal (0.1~7.5
KW)
Name
Description
24
24V Output
P1
MF input terminal
(Factory setting)
FX: Forward run
P2
RX: Reverse run
CM
Input signal common
P3
MF input terminal
(Factory setting)
EST: Emergency stop
P4
RST: Trip reset
P5
JOG: Jog Operation
VR
10V power supply for potentiometer
AI
Freq. Setting voltage signal input: 0~10V
Freq. setting current signal input: 0~20mA
CM
Input signal common
AM
Multi-function analog out signal: 0~10V
3A
Multi-function
relay output
terminal
A contact output
3B
B contact output
3C
A/B contact common
S+
RS485 communication terminal
S-
SA
Safe stop terminal A (and SC, often closed
terminals, Inverter displays “SAFA”when
breaking
SB
Safe stop terminal B (and SC, often closed
terminals, Inverter displays “SAFB”when
breaking
SC
Safe stop connection with public power
source (24V)