Components of TeSys Tera System

The hardware components of the TeSys Tera system are:

LTMT main unit
LTMTCT/LTMTCTV sensor module
LTMT expansion unit
LTMTCUF control operator unit

The microprocessor based LTMT main unit is the central component in the system that manages the control, protection, and monitoring functions of three-phase and single-phase AC induction motors.

The LTMT main unit is designed to work with the following protocols:

Modbus RTU
PROFIBUS DP

The system can be configured and controlled by using following interfaces:

A PC running the TeSys Tera DTM embedded in a FDT container such as SoMove software.
The LTMTCUF control operator unit
A PLC or DCS connected to the system through the communication network.

LTMT Main Unit

LTMT main unit	Features	Communication	Reference
Modbus RTU	Current and voltage based protections Motor monitoring and metering functions Four non-isolated digital inputs Three digital outputs: 2 outputs with NO contacts 1 output with NO+NC contacts Records Trip records Event records Device internal record s	Modbus RTU Baud rate: 2400–115200 bit/s Read or Write function code	LTMTMFM (100–240 Vac/Vdc) LTMTMBD (24 Vdc)
PROFIBUS DP	PROFIBUS DP DP-V0 cyclic services DP-V1 acyclic services Time synchronisation Automatic baud rate detection 12 Mbit/s on D-Type connector and 1.5 Mbit/s on terminal connector	LTMTPFM (100–240 Vac/Vdc) LTMTPBD (24 Vdc)

LTMT main unit

Features

Communication

Reference

Modbus RTU

Current and voltage based protections
Motor monitoring and metering functions
Four non-isolated digital inputs
Three digital outputs:
- 2 outputs with NO contacts
- 1 output with NO+NC contacts
Records
- Trip records
- Event records
- Device internal record
  s

Modbus RTU

Baud rate: 2400–115200 bit/s
Read or Write function code

LTMTMFM (100–240 Vac/Vdc)
LTMTMBD (24 Vdc)

PROFIBUS DP

DP-V0 cyclic services
DP-V1 acyclic services
Time synchronisation
Automatic baud rate detection
12 Mbit/s on D-Type connector and 1.5 Mbit/s on terminal connector

LTMTPFM (100–240 Vac/Vdc)
LTMTPBD (24 Vdc)

LTMTCT/LTMTCTV Horizontal Sensor Module

The following table introduces the key features of the LTMTCT/LTMTCTV sensor modules for horizontal mounting:

Sensor module	Features	Current range	Voltage range	Reference
LTMTCT modules with current transformers	Phase current measurement Phase current imbalance calculation Ground current calculation Ground current measurement with external ground current transformer Phase loss and phase reversal detection based on current	0.3–3 A	-	LTMTCT3T
		2.5–25 A	-	LTMTCT25T
		10–100 A	-	LTMTCT100T
LTMTCTV modules with current and voltage transformers	Phase current and voltage measurement Phase current and voltage imbalance calculation Ground current calculation Ground current measurement with external ground current transformer Phase loss and phase reversal detection based on current and voltage Frequency measurement Power, energy, and power factor calculation	0.3–3 A	60–690 Vac	LTMTCTV3T
		2.5–25 A	60–690 Vac	LTMTCTV25T
		10–100 A	60–690 Vac	LTMTCTV100T

LTMTCTV Horizontal Sensor Module for UL and NEMA Applications

The following table introduces the key features of LTMTCTV horizontal sensor module for UL and NEMA applications:

Sensor module	Features	Current range	Voltage range	Reference
LTMTCTV modules with current and voltage transformers	Phase current and voltage measurement Phase current and voltage imbalance calculation Ground current calculation Ground current measurement with external ground current transformer Phase loss and phase reversal detection based on current and voltage Frequency measurement Power, energy, and power factor calculation	0.3–3 A	60–600 Vac	LTMTCTV3UT
2.5–25 A	60–600 Vac	LTMTCTV25UT
10–100 A	60–600 Vac	LTMTCTV100UT

Sensor module

Features

Current range

Voltage range

Reference

LTMTCTV modules with current and voltage transformers

Phase current and voltage measurement
Phase current and voltage imbalance calculation
Ground current calculation
Ground current measurement with external ground current transformer
Phase loss and phase reversal detection based on current and voltage
Frequency measurement
Power, energy, and power factor calculation

0.3–3 A

60–600 Vac

LTMTCTV3UT

2.5–25 A

60–600 Vac

LTMTCTV25UT

10–100 A

60–600 Vac

LTMTCTV100UT

LTMT Expansion Unit

The following table introduces the key features of the LTMT expansion unit. The maximum number of each LTMT expansion unit that can be connected to one LTMT main unit is also provided in the table.

LTMT expansion unit	Features	Reference	Maximum number
4 Digital Inputs and 2 Digital Outputs	Four isolated digital inputs (DI) Two digital outputs (DO) with NO contacts Status LED indication Powered by LTMT main unit	LTMTIN42FM (DI rating: 100/240 Vac/Vdc) LTMTIN42BD (DI rating: 24 Vdc)	5

LTMT expansion unit

Features

Reference

Maximum number

4 Digital Inputs and 2 Digital Outputs

Four isolated digital inputs (DI)
Two digital outputs (DO) with NO contacts
Status LED indication
Powered by LTMT main unit

LTMTIN42FM (DI rating: 100/240 Vac/Vdc)
LTMTIN42BD (DI rating: 24 Vdc)

LTMTCUF Control Operator Unit

The LTMTCUF control operator unit is the local Human Machine Interface (HMI) of the TeSys Tera system.

LTMTCUF control operator unit	Features	Reference
	Powered by LTMT main unit Liquid Crystal Display (LCD) Contextual navigation keys Displays parameters, alarms, and trips Controls the motor Fast Device Replacement (FDR) service	LTMTCUF

TeSys Tera DTM

TeSys Tera Device Type Manager (DTM) is a software module hosted in a Field Device Tool (FDT) container that uses the open FDT/DTM technology. For example, SoMove software.

In SoMove software, a specific DTM exists for the TeSys Tera system. The TeSys Tera DTM Library must be installed after installing the SoMove software.

TeSys Tera DTM	Features	Reference
	Compatible with SoMove software and other FDT containers. Configures the system through menu entries. Displays parameters, alarms, and trips. Option for controlling the motor feeder. Enable customization of operating modes.	TeSys Tera DTM SoMove FDT container

SoMove Software

SoMove software is a Microsoft Windows-based application, using the open FDT/DTM technology.

SoMove software contains DTMs for different devices. The TeSys Tera DTM is a specific DTM that enables the configuration, monitoring, control, and customization of the control functions of the TeSys Tera system.

Cables

The components of the system require cables to connect to other components and to the communication network.

Connect to	Description	Reference
LTMTCT/LTMTCTV sensor module	LTMT main unit to LTMTCT/LTMTCTV sensor module RJ11 connector cable 0.15 m (5.9 in) in length.	LTMT9RJ1015
	LTMT main unit to LTMTCT/LTMTCTV sensor module RJ11 connector cable 0.5 m (19.6 in) in length.	LTMT9RJ105
	LTMT main unit to LTMTCT/LTMTCTV sensor module RJ11 connector cable 0.2 m (7.87 in) in length	LTMT9RJ102
LTMT expansion unit	LTMT main unit to LTMT expansion unit RJ45 connector cable 0.1 m (3.9 in) in length.	LTMT9RJ401
LTMT expansion unit	LTMT main unit to LTMT expansion unit RJ45 connector cable 1 m (39.37 in) in length	LTMT9EX10
LTMTCUF control operator unit	LTMT main unit to LTMTCUF control operator unit connection cable 1.0 m (39.3 in) in length.	LTMT9CU10S
LTMTCUF control operator unit	LTMT main unit to LTMTCUF control operator unit connection cable 3.0 m (118.1 in) in length.	LTMT9CU30S
PC	PC to LTMT main unit or LTMTCUF control operator unit cable 2.5 m (98.4 in) in length.	–
Modbus network	Modbus network communication cable 0.3 m (11.81 in.) in length.	–
	Modbus network communication cable 1.0 m (39.3 in) in length.	–
	Modbus network communication cable 3.0 m (118.1 in) in length.	–
PROFIBUS DP network	PROFIBUS DP network communication cable 100 m (328.08 ft) in length.	TSXPBSCA100
PROFIBUS DP network	PROFIBUS DP network communication cable 400 m (1,312.33 ft) in length.	TSXPBSCA400