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LT3300-T1-D24-C HMI and control unit

LT3300-T1-D24-C HMI+Control unit with TFT display, Ethernet, serial and source-output DIO; verify project and wiring.

System role and interfaces

Rebuilt from individual evidence

Electrical and lifecycle constraints

Pro-face LT3300-T1-D24-C is an LT-3300T HMI+Control unit with a TFT color display. Its documented interfaces include COM1 serial communication, Ethernet and a 38-pin DIO interface with 16 inputs and 16 outputs; the -C output circuit is source type.

The LT-3300 manual documents DC24V input, a DC19.2-28.8V rated range, 27W maximum power consumption and panel-embedded front protection equivalent to IP65f/NEMA Type 4X/13. Up to three EX modules can connect at the rear.

Unknown: the condition, project or firmware configuration, host compatibility, current stock and repair outcome for an individual unit.

Exact reference
LT3300-T1-D24-C
Category
HMI / Display
Evidence checked
2026-09-11

System role

This section explains what the product does and where it acts in the surrounding system.

Function
Combines the LT-3300T operator display and control logic with serial and Ethernet communications and 16 digital inputs plus 16 digital outputs; the -C variant uses source outputs.
System position
Acts at the machine operator and control boundary, linking the operator display and control logic to field I/O and serial or Ethernet equipment.
Upstream / inputs
Operator commands, serial or Ethernet traffic and digital field signals enter the LT-3300T control unit.
Downstream / outputs
The unit sends source-type digital outputs and serial or Ethernet traffic to connected control equipment.
Limitations
The -C output terminals are not electrically protected; an applicable fuse is required where over-current risk exists.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

  • Pro-face's LT3000 hardware manual lists LT3300-T1-D24-C as an LT-3300 Series model, and Pro-face's product page names the exact model LT3300-T1-D24-C.

    Confidence: high

  • Pro-face's product page classifies LT3300-T1-D24-C in the HMI+Control family and assigns global code PFXLT3300TADC.

    Confidence: high

  • The hardware manual specifies LT-3300T as a TFT color LCD with 320 x 240 pixels and 65,536 colors without blink or 16,384 colors with blink.

    Confidence: high

  • The hardware manual lists COM1 RS232C, RS422 or RS485 on a D-sub 9-pin connector and Ethernet 10BASE-T or 100BASE-TX on an RJ45 connector.

    Confidence: high

  • The hardware manual lists 16-point inputs and 16-point outputs on a 38-pin DIO interface for LT-3300, and the -C output circuit is the source type.

    Confidence: high

  • The hardware manual states that up to three EX modules can connect to the rear side of LT-3300 units.

    Confidence: high

  • The LT-3300 electrical specification lists DC24V input, a DC19.2-28.8V rated range, 27W maximum power consumption and a 3ms maximum allowable voltage drop.

    Confidence: high

  • The hardware manual rates the front surface at panel embedding as equivalent to IP65f/NEMA Type 4X/13 and specifies natural-air-circulation cooling.

    Confidence: high

  • The hardware manual warns that LT-3300 -C output terminals are not electrically protected and recommends an applicable fuse when over-current risk exists.

    Confidence: high

  • Pro-face's product page lists 2025-12-31 as end of sales and 2030-12-31 as end of repair for LT3300-T1-D24-C.

    Confidence: high

Inferences

  • The documented display, control, communications and DIO interfaces place the unit at the operator and control boundary of a machine system.

    Confidence: high

    Rationale: The product classification and manual interfaces jointly describe an operator display with control, field I/O and equipment communications at the machine boundary.

  • The evidence supports this reference as an all-in-one operator and control unit linking field I/O with serial and Ethernet equipment, subject to project and wiring checks.

    Confidence: high

    Rationale: The HMI+Control classification and documented DIO, serial, Ethernet and expansion interfaces support this system role; an individual machine project remains unverified.

Unknowns

  • Unknown: the condition, remaining service life and installed revision of an individual unit.

    Confidence: low

    Missing evidence: A physical inspection and unit-specific service records are not present in the captured sources.

  • Unknown: the loaded control logic, HMI project, firmware and configured protocol of an individual unit.

    Confidence: low

    Missing evidence: The captured sources document product interfaces but do not identify a unit-specific project or firmware configuration.

  • Unknown: compatibility with a specific host controller, network, field device or cabinet.

    Confidence: low

    Missing evidence: The captured sources do not identify the target installation or its connected equipment.

  • Unknown: current stock or a guaranteed repair outcome; the product page's lifecycle dates do not establish either.

    Confidence: low

    Missing evidence: Seller inventory and a unit-specific service assessment are not present in the captured sources.

System position diagram

LT3300-T1-D24-C links operator input and field I/O with serial and Ethernet control equipment.

Reading limit: system position only, not a wiring or safety drawing.

The documented LT-3300T chain combines operator control, field DIO and serial or Ethernet links.

Enlarged system diagram

LT3300-T1-D24-C links operator input and field I/O with serial and Ethernet control equipment.

The documented LT-3300T chain combines operator control, field DIO and serial or Ethernet links.

View Mermaid source
flowchart LR
  operator["Operator"] -->|touch and control input| unit["LT3300-T1-D24-C\nHMI+Control"]
  field["Field I/O"] -->|16 inputs| unit
  unit -->|16 source outputs| field
  unit <-->|serial and Ethernet| equipment["Control equipment"]
View diagram labels
Nodes
Operator; LT3300-T1-D24-C HMI+Control; Field I/O; Control equipment
Edges
Operator control input; 16 digital inputs; 16 source outputs; Serial and Ethernet

Next action

The captured primary documentation supports publishing this exact model as an HMI+Control unit with concrete display, control, communications and DIO functions, while retaining the documented output-protection limitation.

Match the exact model and global code, then verify project or firmware, host communications, DIO wiring and output protection before ordering, wiring or commissioning.

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