Mitsubishi Q68RD3-G Temperature Input Module | MELSEC-Q Series Thermocouple Sensor Module

Mitsubishi Q68RD3-G

Q68RD3-G temperature module

Q68RD3-G data acquisition

Q68RD3-G

Mitsubishi Q68RD3-G temperature module enables high-precision temperature measurement and data acquisition for industrial automation. The Q68RD3-G supports multiple sensor inputs, integrates with Mitsubishi PLC systems, and ensures reliable real-time monitoring and process control.

Specification

SEODescription

The Mitsubishi Q68RD3-G temperature module is a high-precision data acquisition solution designed for industrial automation systems. This 8-channel input module supports direct connection to thermocouples (J, K, T, R, S, B types) and RTDs (Pt100, JPt100), with 16-bit resolution for accurate temperature measurement. It integrates seamlessly with Mitsubishi Q-series PLCs via the base unit's backplane, supporting cyclic communication for real-time data processing. Operating within 24 VDC ±10% power supply and 0 to 55°C ambient temperature range, the Q68RD3-G data acquisition module excels in harsh environments typical of manufacturing, chemical processing, and energy industries. Its key advantages include channel-to-channel isolation, built-in cold junction compensation, and compatibility with multiple sensor types. However, it requires dedicated configuration software (GX Works) for calibration and lacks standalone operation capability without a PLC main unit.

SEOSpecification

Parameter	Specification
Manufacturer	Mitsubishi Electric
Model	Q68RD3-G
Type	Temperature input module (data acquisition)
Channels	8 channels
Input type	Thermocouple/RTD (Pt100, JPt100)
Resolution	16-bit
Measurement range	-200°C to 1300°C (thermocouple-dependent)
Accuracy	±0.1% of full scale
Communication	MELSEC-Q series bus
Compatibility	GX Works2 programming software
Operating temperature	0°C to 55°C
Power supply	5VDC (via base unit)
Certification	CE, RoHS compliant

SEOQandA

question:How do you handle shipping?
answer:We support DHL, Fedex, UPS, and other major carriers.
question:What is the warranty policy?
answer:Products come with a 1-year warranty covering defects.
question:Can I schedule a self-pickup with official couriers?
answer:Yes, you can arrange self-pickup with prior notice to our team.

SEOQandA_Product

question:Q68RD3-G module communication failure
answer:Verify DIP switch settings, check wiring, and ensure baud rate matches connected devices.
question:Inaccurate or fluctuating data from Q68RD3-G
answer:Ensure shielded cable connections, proper grounding, and isolate from high-frequency interference sources.
question:Q68RD3-G not recognized in GX Works configuration
answer:Confirm module installation slot alignment, check parameter settings, and restart configuration if necessary.
question:Q68RD3-G power indicator abnormal
answer:Validate 24VDC power supply stability, inspect terminal connections, and confirm voltage within 20.4-26.4V range.
question:Firmware update failure on Q68RD3-G
answer:Download official firmware, follow sequential update steps from manual, and reset module if interrupted.