AutomationDirect T1F-14THM Compact PLC Module

The AutomationDirect T1F-14THM is a compact PLC (programmable logic controller) from the Terminator series, designed for small to medium-scale control applications. This self-contained unit combines a CPU, power supply, and 14 built‑in I/O points in a space‑saving housing. The T1F-14THM provides 8 DC inputs and 6 relay outputs, plus two high‑speed counters and an RS‑232 programming port. It is an economical solution for machine control, OEM equipment, and standalone automation tasks.

Technical Specifications

Key Features and Benefits

• Integrated All-in-One: CPU, power, and I/O in one compact unit reduces panel space and wiring.

• Fast High-Speed Inputs: 10 kHz counters ideal for encoder feedback or high-speed event capture.

• Relay Outputs: 2 A rating suitable for direct control of small solenoids, lamps, and contactors.

• EEPROM Memory: No battery required; program retained indefinitely.

• Free Software Support: Programmable with AutomationDirect’s DirectSOFT (basic version free).

• Modular Expandability: Add up to two extra I/O modules for larger applications.

Functional Overview

The T1F-14THM executes ladder logic programs stored in its onboard EEPROM. The 8 digital inputs accept 24 V DC signals from sensors, buttons, and limit switches. The 6 relay outputs switch loads up to 2 A at 30 V DC or 240 V AC. Two dedicated high‑speed inputs (from the first two input points) can count pulses up to 10 kHz, enabling integration of incremental encoders or flow meters without additional hardware. The RS‑232 port allows connection to a PC for programming or to an operator interface panel. The unit also includes two analog potentiometers (on the front) for simple setpoint adjustments.

Compatibility and Integration

The T1F-14THM is compatible with all T1F expansion I/O modules (digital, analog, temperature input). It can also communicate with AutomationDirect C-more HMI panels via the RS‑232 port. No special base or backplane is required – the unit mounts directly on DIN rail. The programming software (DirectSOFT) supports online editing, real‑time monitoring, and documentation. The T1F series uses standard 8‑pin mini‑DIN programming cables widely available.

Installation and Configuration

The T1F-14THM mounts on 35 mm DIN rail. Input wiring follows standard 24 V DC sourcing/sinking configuration using removable terminal blocks. Relay outputs are normally open and share a common terminal per group of three. After wiring, connect the programming cable to a PC, launch DirectSOFT, and select the T1F model. The software guides through I/O addressing (inputs start at X0, outputs at Y0) and special function configuration (counters, interrupts). The program can be saved to and loaded from the EEPROM using simple menu commands.

Maintenance and Reliability

No battery replacement is required due to EEPROM memory. The relays are rated for 500,000 electrical operations at rated load; for longer life, external contactors may be used for heavy loads. The unit has no internal cooling fan, thus adequate spacing (25 mm) from adjacent devices is recommended. Periodic inspection should include cleaning of dust from ventilation slots and checking of terminal tightness. The solid‑state design and conformal coating options (depending on order code) provide resistance to humidity and mild contaminants.

Conclusion

The AutomationDirect T1F-14THM offers a compact, cost‑effective PLC solution for small automation projects. With built‑in I/O, high‑speed counters, and easy programming, it meets the needs of machine builders and maintenance teams seeking a reliable controller without complex configuration.