Schneider Electric LTMCU TeSys T LTMCU Operator Control Unit

LTMCU a TeSys T operator unit with backlit LCD

The LTMCU is a Schneider Electric product listed in the datasheet as: Operator control unit, TeSys T, 140 mA, RJ45 connection, flush- mounted, backlit LCD. The LTMCU is the operator control unit for TeSys T LTMR motor controllers. It mounts in a panel door and gives local display of motor data, ten push buttons for set-up and control, and four LEDs, without needing a PC at the machine. Seven Star LLC supplies the LTMCU in Oman and the GCC as an independent supplier based in Muscat.

Decoding the reference: LTM is the TeSys T family and CU is the control unit. The datasheet says it connects to the LTM R controller via an RJ45 port at the rear and to a PC via RJ45.

Technical specifications of the LTMCU

Display and mounting data of the LTMCU

Display: Backlit LCD.

The unit has a backlit LCD, four LEDs and ten push buttons, is powered via the controller at a maximum of 140 mA, and has a dissipation of 1 W. The front is IP54 and the rear IP20, with flush mounting in a cut-out and dimensions of 117 x 70 x 50 mm.

Operating temperature is -20 to 60 degrees Celsius and storage -40 to 80 degrees, with humidity of 15 to 95 percent. Shock and vibration figures and a V2 flame retardance are also listed.

Using the LTMCU with TeSys T

The operator unit lets technicians read currents, thermal state and fault history, and change settings at the panel door. In a motor control centre, one unit can be fitted per feeder or moved between feeders where the connection allows.

It is a spare-parts item for existing TeSys T installations, and compatibility is with the LTMR family. The datasheet shows it discontinued with an end-of-service date.

The datasheet downloaded for this page carries lifecycle notices: Discontinued on: Sep 30, 2026; To be end-of-service on: Jan 31, 2027. For a plant that already runs this reference that makes the LTMCU a spare-and-replacement item, and it is worth fixing the stock level and the long-term successor plan at the same time. We can discuss compatible alternatives once we know the installation.

Selection checklist for the LTMCU

• Controller: LTMR TeSys T unit only.
• Mounting: flush panel cut-out, door thickness and gasket.
• Cable: RJ45 connection cable length to the controller.
• Environment: IP54 front, temperature limits.
• Quantity: one per feeder or one per site as a service tool.
• Lifecycle: check status before ordering.

Fitting and use of the LTMCU

Cut the panel opening as per the manual and fit the unit with its gasket for the specified front protection. Connect the RJ45 cable from the rear to the controller and check that the display wakes up.

Use the keypad password where available, and avoid leaving settings changeable from the door on public sites. Keep a copy of the parameter set made from the PC software.

Typical applications of the LTMCU in Oman and the GCC

In Oman and the GCC, an operator unit saves time in motor control centres where the controller is behind a closed compartment. Clean the display with a soft cloth since dust and fine sand scratch the window.

Dimensions, environment and approvals of the LTMCU

For the LTMCU, plan the mounting space from the datasheet: 117 mm (W) x 70 mm (H) x 50 mm (D). The LTMCU weighs 0.4 kg. Mounting, derating and enclosure choices follow the environmental data below, which should be compared with the actual panel temperature and the dust and humidity of the site in Oman and the GCC.

Ambient temperature limits in the datasheet: -20 to 60 °C. Relative humidity: 15 to 95 %. Ingress protection: IP54 EN/IEC 60947-4-1 front; IP20 EN/IEC 60947-4-1 rear. Standards listed: UL 60947-4-1A; CSA C22.2 No 60947-4-1; EN/IEC 61131-2. Certifications listed for this reference: C-tick; EAC; CSA; NOM; UL; CE.

Information to send with an RFQ for the LTMCU

• Full reference and quantity required
• Existing equipment, panel or rack it must fit
• Supply voltage, load or signal details of the application
• Required delivery location and timing
• Whether a spare, a replacement or a new installation

Site conditions in Oman for the LTMCU

Control cabinets in Gulf plants often run hot, because many sit in outdoor kiosks or in rooms where air conditioning is not always reliable. Before you finalise the LTMCU, check the permitted ambient range and any derating stated by the manufacturer against the real temperature inside your panel, and leave the recommended spacing around the device so that heat can escape. Long cable runs between the field and the marshalling cabinet are common on large sites, so confirm the signal types, wiring limits and earthing arrangement early in the design.

It also helps to standardise on a small number of part numbers across a project. Keeping a few spare LTMCU units on site in Oman shortens recovery time after a fault, and documenting configuration settings makes replacement faster for the maintenance team.

Documents and quotation

A datasheet for this product is attached on this page. It lists the electrical, mechanical and environmental data summarised above.

Send us the part number, quantity and application and we will confirm availability and a quotation. Seven Star LLC is an independent supplier in Muscat and does not represent itself as an official channel of the manufacturer.