Quick Start Guide
Overview of the Application Example
Introduction
The Quick Start Guide uses an application example to illustrate each step in the process of installing, configuring and using TeSys T.
The application example uses the LTM R controller to help protect and control a motor and its driven load, in this case, a pump.
This application example is intended to:
-
show you how to configure the LTM R controller in a few steps
-
provide an example you can modify to develop your own configuration
-
serve as a starting point for the development of more complex configurations, incorporating such additional features as HMI or network control
Functions Performed
When the LTM R controller has been configured in order to help protect and control the motor and pump, it will perform the following functions:
-
thermal overload protection
-
motor temperature sensor protection
-
voltage protection / undervoltage
-
external ground current trip protection
-
initial system configuration during commissioning using PC and PowerSuite software
Operating Conditions
The operating conditions used in the application example are:
-
motor power: 4 kW
-
line-to-line voltage: 400 Vac
-
current: 9 A
-
control circuit voltage: 230 Vac
-
3-wire control
-
motor trip class 10
-
start button
-
stop button
-
reset button on enclosure door
-
trip light
-
alarm light
-
full voltage, non-reversing starter (direct over the line starter)
-
24 Vdc power supply in the motor control center or control station for future use with LTM E expansion module inputs
Network Conditions
The network conditions for the example are:
-
protocol: Modbus
-
address: 4
-
baud rate: 19,200
-
parity: even
Components Used
The application example uses the following components:
Item |
Component Description |
Reference Number |
---|---|---|
1 |
LTM R 100-240 Vac Modbus motor management controller (1.35...27 A FLC) |
LTMR27MFM |
2 |
LTM E 24 Vdc expansion module |
LTMEV40BD |
3 |
LTM R to LTM E RJ45 connection cable |
LTMCC004 |
4 |
PowerSuite cable kit |
VW3A8106 |
5 |
PowerSuite software on CD-ROM, version ≥ 2.5 |
PowerSuite |
6 |
External ground current sensor |
TA30 |
7 |
External PTC binary motor temperature sensor |
User supplied |
Presentation of the TeSys T Motor Management System
System Overview
The TeSys T Motor Management System offers protection, control, and monitoring capabilities for single-phase and 3-phase AC induction motors.
The system offers diagnostic and statistics functions and configurable alarms and trips, allowing better prediction of component maintenance, and provides data to continuously improve the entire system.
The 2 main hardware components of the system are:
-
the LTM R controller, and
-
the LTM E expansion module.
System Presentation
The following tables describe the main components of the TeSys T Motor Management System.
LTM R Controller |
Functional Description |
Reference Number |
---|---|---|
|
LTMR08MBD (24 Vdc, 0.4...8 A FLC) |
|
LTMR27MBD (24 Vdc, 1.35...27 A FLC) |
||
LTMR100MBD (24 Vdc, 5...100 A FLC) |
||
LTMR08MFM (100...240 Vac, 0.4...8 A FLC) |
||
LTMR27MFM (100...240 Vac, 1.35...27 A FLC) |
||
LTMR100MFM (100...240 Vac, 5...100 A FLC) |
LTM E Expansion Module |
Functional Description |
Reference Number |
---|---|---|
Additional components required for an optional expansion module:
|
LTMEV40BD (24 Vdc logic inputs) |
|
LTMEV40FM (100...240 Vac logic inputs) |
PowerSuite Software |
Functional Description |
Reference Number |
---|---|---|
Additional components required for PowerSuite software:
|
PowerSuite ≥ v 2.5 |
|
VW3A8106 (PowerSuite cable kit) |
LTM CU Control Operator Unit |
Functional Description |
Reference Number |
---|---|---|
Additional components required for an optional HMI device:
|
LTM CU |
|
VW3A1104R.0 (HMI communication cable) |
||
VW3A8106 (PowerSuite cable kit) |
||
LTM9KCU Kit for portable LTM CU |
LTM R and LTM E Description
The following diagrams show the features of the LTM R controller and the LTM E expansion module:
Installation
Overview
The following procedure describes how to install and physically configure the TeSys T system, according to the operating conditions used in the application example. The same procedure is used for other configurations.
The full installation procedure is shown on the Instruction sheets provided with the LTM R controller and the LTM E expansion module. It is also described in detail in the Installation chapter of the User Manual.
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HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
Turn off all power supplying this equipment before working
on it.
Apply appropriate personal protective equipment (PPE)
and follow safe electrical work practices.
Failure to follow these instructions will result in death or serious injury.
|
The following diagrams show the physical dimensions of the LTM R controller and the LTM E expansion module:
Mount LTM R and LTM E
Mount the LTM R controller and the LTM E expansion module, respecting clearance zones and operating position.
Connect LTM R to LTM E
Connect the LTM R controller and the LTM E expansion module using the RJ45 cable.
Connect to a TeSys T LTM CU HMI Device (Optional)
Wire Current Transformers
Wire the current transformers according to the operating conditions:
-
Product range → 1.35...27 A
-
Nominal motor current → 9 A
Wire Ground CT
Wire LTM R
-
Wire the power supply and the I/O.
-
Wire the temperature sensors.
NOTICE |
---|
RISK OF DESTROYING THE INPUTS
Connect the LTM R controller's
inputs using the 3 Common (C) terminals connected
to the A1 control voltage via an internal
filter.
Failure to follow these instructions can result in equipment damage.
|
Wire LTM E
Wire the voltage transformers and the I/O on the LTM E expansion module.
LTM R Controller Wiring
The diagram below illustrates the main power circuit and the 3-wire (impulse) local control with network control selectable, corresponding to the application example.

1 Contactor
2 Ground current sensor
3 PTC binary thermistor
4 Alarm indication
5 Trip indication
L Local control
O Off
N Network control
Configuration
Overview
After the wiring connections are made, the next step is to configure parameters using PowerSuite software (see the PowerSuite chapter of the User Manual).
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UNINTENDED EQUIPMENT OPERATION
The application of this product requires expertise in
the design and programming of control systems. Only persons with such
expertise should be allowed to program and apply this product.
Follow all local and national safety codes and standards.
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
|
Install Software
Step |
Description |
---|---|
1 |
Place the installation disk into your PC’s CD/DVD drive. |
2 |
Navigate to and click on the setup.exe file. The setup wizard begins. |
3 |
Follow the instructions in the setup wizard. |
Connect to PowerSuite™ Software
Set Parameters
Step |
Description |
---|---|
1 |
Start up the PowerSuite software. |
2 |
In the Load Configuration screen, select and open a configuration file with factory default settings. |
3 |
Open the Device Information branch of the tree control and set the Operating parameter settings. |
4 |
Open the Settings branch of the tree control. |
5 |
Locate and set the Operating parameter settings in the Motor and Control sub-branch. |
6 |
Repeat step 5 for all other setting item sub-branches. |
7 |
Save a copy of the completed configuration settings to a new configuration file. |
List of Parameter Settings
Parameter settings for the application example:
Device Information Branch |
Sub-branch |
Parameter |
Setting |
---|---|---|---|
Device information |
Current range |
1.35-27 A |
|
Network |
Modbus |
||
Control voltage |
100-240 Vac |
Settings branch |
Sub-branch |
Parameter |
Setting |
---|---|---|---|
Motor and Control Settings |
Motor operating mode |
Nominal voltage |
400 V |
Nominal power |
4 kW |
||
Operating mode |
3 wire independent |
||
Contactor rating |
9 A |
||
Phase |
3 phase |
||
Motor temperature sensor |
Sensor type |
PTC binary |
|
Trip enable |
Enable |
||
Trip level |
According to motor |
||
Alarm level |
According to motor |
||
Load CT |
Load CT ratio |
Internal |
|
Load CT passes |
1(1) |
||
Ground CT |
Ground CT ratio |
1000:1 |
|
Control mode |
Local control |
Terminal trip |
|
Thermal Settings |
Thermal overload |
Trip type |
Inverse thermal |
Trip class |
10 |
||
FLC1 (1) |
50 %(1) (equivalent to 9 A) |
||
Trip enable |
Enable |
||
Alarm enable |
Enable |
||
Current Settings |
Ground Current Mode |
Trip enable |
Enable |
Trip level |
1 A |
||
Trip timeout |
0.5 s |
||
Alarm enable |
Enable |
||
Alarm level |
200 mA |
||
Voltage Settings |
Undervoltage |
Trip enable |
Enable |
Trip level |
85 % |
||
Trip timeout |
3 s |
||
Alarm enable |
Enable |
||
Alarm level |
90 % |
(1) SeeFLC (Full Load Current) Settings.
Transfer the Configuration File
Step |
Description |
---|---|
1 |
Open the configuration file to be transferred.
|
2 |
Connect your PC to the LTM R controller.
|
3 |
Transfer the configuration file:
Result: The product is now ready to use. |
FLC (Full Load Current) Settings
FLC Basics
-
Load CT ratio = Load CT primary / (Load CT secondary * Passes)
-
Current sensor max = Current range max * Load CT ratio
-
Current range max is determined by the LTM R controller commercial reference. It is stored in units of 0.1 A and has one of the following values: 8.0, 27.0, or 100.0 A
-
Contactor rating is stored in units of 0.1 A and is set by the user between 1.0 and 1000.0 A
-
FLCmax is defined as the lower of the Current sensor max and the Contactor rating values
-
FLCmin = Current sensor max / 20 (rounded to the nearest 0.01 A.). FLCmin is stored internally in units of 0.01 A
Conversion of Amperes to FLC Settings
FLC values are stored as a percentage of FLCmax
FLC (in %) = FLC (in A) / FLCmax
Example (No External CTs)
Data:
-
FLC (in A) = 9 A
-
Current range max = 27.0 A
-
Load CT primary = 1
-
Load CT secondary = 1
-
Passes = 1or 2
-
Contactor rating = 18.0 A
Calculated parameters with 1 pass:
-
Load CT ratio = Load CT primary / (Load CT secondary * passes) = 1 / (1 * 1) = 1.0
-
Current sensor max = Current range max * Load CT ratio = 27.0 * 1.0 = 27.0 A
-
FLCmax = min (Current sensor max, Contactor rating) = min (27.0, 18.0) = 18.0 A
-
FLCmin = Current sensor max / 20 = 27.0 / 20 = 1.35 A
-
FLC (in %) = FLC (in A) / FLCmax = 9.0 / 18.0 = 50 %
Calculated parameters with 2 passes:
-
Load CT ratio = 1 / (1 * 2) = 0.5
-
Current sensor max = 27.0 * 0.5 = 13.5 A
-
FLCmax = min (13.5, 18.0) = 13.5 A
-
FLCmin = Current sensor max / 20 = 13.5 / 20 = 0.67 A
-
FLC (in %) = FLC (in A) / FLCmax = 9.0 / 13.5 = 66 %
Diagnostic
LTM R and LTM E LEDs
LEDs
Use the five LEDs on the face of the LTM R controller to monitor its state, as follows:
LTM R LED |
Color |
Describes |
Indicates |
---|---|---|---|
HMI Comm |
Yellow |
Communication activity between LTM R controller and expansion module |
|
Power |
Green |
LTM R controller power or internal trip condition |
|
Alarm |
Red |
Protection trip or alarm, or internal trip condition |
|
Fallback |
Red |
Communication connection between LTM R controller and network module |
|
PLC Comm |
Yellow |
Communication activity on the network bus |
|
Use the five LEDs on the face of the LTM E expansion module to monitor its state:
LTM E LED |
Color |
Describes |
Indicates |
---|---|---|---|
Power |
Green or red |
Module power or internal trip condition |
|
Digital Inputs I.7, I.8, I.9 and I.10 |
Yellow |
State of input |
|
Use with TeSys T LTM CU Control Operator Unit
Available Functions
Once connected to the LTM R, the LTM CU can be used to:
-
configure parameters for the LTM R controller,
-
display information about the LTM R controller configuration and operation,
-
monitor trips and alarms generated by the controller,
-
control the motor locally using the local control interface.
LTM CU Front Face
Navigation Keys
The LTM CU navigation keys are contextual, that is, their function depends on the associated icons shown on the LCD display. These icons change for different displays, so the navigation key functions also change.
The navigation keys can be used to:
-
navigate menus and sub-menus,
-
scroll within a value list,
-
select a setting in a value list,
-
exit a value list without making a selection,
-
return to the main (first-level) menu,
-
switch between manual and automatic presentation mode in Quick View display.
The diagram below shows an example of the different functions of each of the navigation keys associated with an icon on the LCD display:

1 Information area of the LCD display
2 Contextual navigation icons area of the LCD display
3 Move up to the next higher-level menu
4 Move down to the next item in the menu
5 Select an item
6 Move up to the previous item in the menu
7 Return to the main menu
LCD Displays
The LTM CU presents 3 different LCD displays:
LCD display |
Functionality |
---|---|
Menu |
|
Quick View |
|
Detected Trips and Alarms |
|
Contextual Navigation Icons
The following table describes the icons used with the contextual navigation buttons on the LTM CU:
Icon |
Description |
Icon |
Description |
---|---|---|---|
Enables access to the main menu from a sub-menu or from Quick View |
Enables access to Quick View from the main menu or a sub-menu |
||
Scroll down |
Enables access to manual scroll mode (when Quick View is in automatic scroll mode) |
||
Scroll up |
Enables access to automatic scroll mode (when Quick View is in manual scroll mode) |
||
Validates a setting or value and enables access to a sub-menu when a menu is selected |
Used to increment a setting in menu mode |
||
Move up to the next higher-level menu |
Used to decrement a setting in menu mode |
||
When a menu item is password-protected, this icon enables access to the Enter Password screen |
Information Icons
The following table describes the icons provided as information in the information area of the LCD display. They indicate, among others, the selected menu or parameter:
Icon |
Description |
Icon |
Description |
---|---|---|---|
Main menu |
Indicates that the present display is Quick View |
||
Metering setting menu |
Indicates that a detected alarm has occurred |
||
Protection setting menu |
Indicates that a detected error or detected failure has been detected |
||
Control setting menu |
Information |
||
Services menu |
Check box selected |
||
Language selection menu |
Check box unselected |
||
Radio button selected |
Item has been selected (for inclusion in Quick View display) |
||
Radio button unselected |
LTM R in Configuration mode |
Example of an HMI Display
Here is an example of HMI LCD displaying an average current of 0.39 A in local control, run mode:

1 Quick View display icon
2 Name of the setting currently displayed
3 Motor state
4 Short key to main menu
5 Manual scroll mode icon; pressing the associated contextual navigation key switches to manual scroll mode
6 Value of the setting currently displayed
Network Communication on Modbus
Wire the Communication Port
Set the Parameters
For the application example, set the following parameters:
Settings Branch |
Sub-branch |
Parameter |
Setting |
---|---|---|---|
Device information |
– |
Network |
Modbus |
Communication |
Network port |
Address |
4 |
Baud rate |
19 200 |
||
Parity |
Even |
Network Port Comm Loss Timeout parameter is enabled by default, with a 60 s timeout. If this is not suitable, you can disable this parameter or set another timeout value.
Set up the PLC Communication
Set up communication between a PLC and the LTM R controller:
Step |
Description |
---|---|
1 |
Declare the Modbus module in the PLC. |
2 |
Configure the Modbus module in the PLC software. |
3 |
Save and transfer the configuration to the PLC. |
4 |
Test via the debug screen or the application program. |
Configure the Communication
This example describes how to configure communication between a Premium PLC running Unity software and an LTM R controller:
Step |
Description |
---|---|
1 |
Declare the Modbus module in the Unity software: |
2 |
Configure the Modbus module in the Unity software:
|
3 |
Save and transfer the configuration to the PLC. |
4 |
Verify the communication operation via the debug screen:
|
5 |
Develop and load the application program, then test it. |
Registers for Simplified Operation
Standard Requests on a PLC Platform
1) Example of a Read Operation (Modbus Request Code 3)
The example below describes a READ_VAR request, within a TSX Micro or Premium platform, in order to read the LTM R states at address 4 (secondary n° 4) contained in internal word MW0:
Syntax with PL7 software:

1 Address of the device with which you wish to communicate: 3 (device address), 0 (channel), 4 (device address on the bus)
2 Type of PL7 objects to be read: MW (internal word)
3 Address of the first register to be read: 455
4 Number of consecutive registers to be read: 1
5 Word table containing the value of the objects read: MW0:1
6 Read report: MW100:4
2) Example of a Write Operation (Modbus Request Code 16)
The example below describes a WRITE_VAR request, within a TSX Micro or Premium platform, in order to control an LTM R by sending the contents of internal word MW502:
Syntax with PL7 software:

1 Address of the device with which you wish to communicate: 3 (device address), 0 (channel), 4 (device address on the bus)
2 Type of PL7 objects to be written: MW (internal word)
3 Address of the first register to be written: 704
4 Number of consecutive registers to be written: 1
5 Word table containing the value of the objects to be sent: MW502:1
6 Write report: MW200:4