Mitsubishi Q64TCRTN Temperature Control Module for Q Series PLC

The Mitsubishi Q64TCRTN is a dedicated temperature control module for the Q Series programmable logic controller platform. It provides four isolated thermocouple input channels with built-in PID control, enabling precise regulation of heating or cooling processes. The module is ideal for applications requiring accurate temperature management in industrial environments.

Input Specifications

Each channel accepts thermocouple types K, J, T, E, R, S, B, N (selected via software). Input range: -200 to 2400°C depending on type. Resolution: 0.1°C (0.3°F). Cold junction compensation is integrated, with an accuracy of ±0.5°C. Input impedance is greater than 1 MΩ.

Control Functions

The module supports PID control with auto-tuning (AT) and self-tuning (ST) algorithms. Control outputs can be transistor (open-collector) or analog (0-10 V or 4-20 mA) via external actuator modules. Heating/cooling dual-output control is available. Sampling period is 500 ms per channel.

Data Communication with PLC

The Q64TCRTN communicates with the Q CPU via the backplane using dedicated buffer memory (BFM). Users can read measured temperatures, set points, PID parameters, and status. The module also provides alarm outputs (high/low, rate-of-change) that can trigger CPU interrupts.

Configuration and Programming

Configuration is performed using GX Works2 or GX Developer, where users can select thermocouple type, set PID constants, and define alarm thresholds. The module can be used with the PLC's ladder logic for setpoint changes and mode switching.

Diagnostics and Indicators

LEDs for power, communication, and error status. The module performs self-diagnostics for sensor break, over-range, and cold-junction fault. Error codes are stored in buffer memory.

Electrical and Environmental Ratings

Supply: 5 VDC from backplane (300 mA) and external 24 VDC (100 mA) for cold junction. Operating temperature: 0 to 55°C, storage: -20 to 70°C. Humidity: 10-90% non-condensing. Isolation: 1500 VAC between input and PLC.

Mechanical Dimensions

Size: 98 mm x 27.5 mm x 90 mm (H x W x D). Weight: 0.2 kg. DIN-rail mounting (standard Q series footprint).

Compatibility

Compatible with Q00J, Q00, Q01, Q02, Q03, Q04, Q06, Q10, Q20, Q26, Q50, Q100 CPUs. Up to 16 temperature modules per system.

Applications

Widely used in plastic injection molding, extrusion, heat treatment furnaces, packaging sealing, and food processing.

Installation and Wiring

Use shielded thermocouple extension wires. Ensure proper grounding and avoid proximity to power cables. Terminal blocks are screw-type.

Maintenance

Periodic verification with a calibrated source is recommended. Firmware updates via serial communication.

In summary, the Mitsubishi Q64TCRTN temperature module delivers reliable, accurate multi-channel temperature control with flexible PID tuning, essential for quality-critical thermal processes.