Critical embedded systems

LT Programmable Controller

The LT Range is a line of modular controllers for tough military and industrial environments.

 

The military version features enhancements that support the use in a harsher environment and contribute to cybersecurity.

MAIN FEATURES

robustness

Each module is integrated in aluminum sleeve which simultaneously ensures

  • Immunity to electromagnetic interference
  • High mechanical strength
  • IP protection (NF EN 60529)
  • Good heat dissipation

Diversity

Length of the base : from 4 to 30 modules.

Input/output connectors : screw terminals/spring cage (industrial version) or connectors SubD (military version) .

Mounting : DIN rail, grid or on the amounts of the cabinet with brackets.

Installation : box or cabinet.

Modularity

  • Digital inputs : 16/32/48/64 channels boards
  • Digital outputs : 8/16/24/32 channels boards
  • Analog inputs/outputs : 8/16 channels boards

compactness

  • Dimensions :W x H x D = (N x 25) x 105 x 84 mm
    • N= number of modules on the base.

central unit

capacity

  • Processor Marvel XScale 32 bits 400Mips
  • Memories : 64 Mo RAM, 32 Mo FLASH, 8 Ko FRAM
  • Mass storage for Big data : 1 Go NAND
  • Real Time Clock : Back up 45 days

communication interfaces

  • 1 or 2 Ethernet channels 10/100baseT RJ45 (with antivibration  ring for the military version)
  • 0 or 3 serial channels RS232/RS485 (SubD 25 points connector)

programming

  • IEC61131-3 languages (Ladder, Grafcet, Structured Text)  with the STRATON workbench from CopaData.
  • C language with a Software Development Kit (Eclipse IDE).

I/O FEATURES ( IEC 61131-2)

DIGITAL OUTPUTS (STATIC)

  • Type : 24Vdc
  • Nominal current : 100mA, 250mA, 500mA
  • Orange-Yellow LED display by output

ANALOG OUTPUTS

  • Range : 4-20mA 
  • Tension : -10Vdc to +10Vdc
  • Resolution : 11 bits + sign , 0 to 2048 points
  • Channels with common point
  • Green LED display by output

RELAY OUTPUTS

  • Floating voltage relay switch
  • Breaking  current capacity : 6A
  • More than 30 million switching
  • Orange LED display

DIGITAL INPUTS

  • Type : 24Vdc
  • Modularity : 16, 32, 48, 64 inputs
  • Resistive input : IEC61131 type P (5,5kW, 5mA to 24V)
  • Green LED display  by input

ANALOG INPUTS

  • Range : ±20mA
  • Tension : ±10V
  • Resolution : 12 bits +sign
  • Channels not isolated from each other
  • Maximum error at full scale : ±1%

Wiring control digital input

The wiring control digital inputs are designed for monitoring sensitive sites and the anti-intrusion control of critical installations.

The input is used to detect the 4 states of a line between the sensor and the input of the automaton: sensor Normally Open, Normally Closed, Short Circuit on the line or line cutted.

The detection resistors installed near the sensor can be chosen between 1kΩ and 10kΩ.

The PLC provides 1 status bit and 1 defect bit to encode the 4 states.

The distance between the sensor and the PLC input can be up to 200m.

VERSION FOR HARSH ENVIRONMENT

CLIMATIC and electromagnetic test

  • Temperature : -40°C +70°C
  • Humidity : 5 to 95% HR without condensing
  • Vernishing process of boards against humidity and condensation
  • Increased Electromagnetic Immunity compliant with AECTP500 standard

MECHANICAL TESTS (SHOCK & VIBRATION)

  • I/O connectors : locked SubD 
  • Ethernet RJ45 connector with anti-vibration ring.
  • Mounting  brackets are reinforced

SOFTWARE FOR CYBERSECURITY PROTECTION

  • SNMP V3 protocol
  • SSH
  • SFTP
  • HTTP / HTTPS Server
  • PAM
  • Open VPN service (Client  and Server)
  • Gnu TLS (SSL, TLS, DTLS protocols)
  • Open LDAP services
  • NTPS client

1U or 2U rack version

For installations with high congestion requirements, Leroy Automation can offer 19-inch 1U or 2U rack packaging depending on the number of I/O cards. The input/output wiring is done on the rear panel.

LT 1U