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MELSEC-Q Series Temperature Input Unit (Q68RD3-G)

MITSUBISHI

A temperature input unit for the versatile MELSEC-Q series

Part Number

Configured Part Number is shown.

Q68RD3-G

Product Specifications
Part Numbers
Catalog

Temperature-sensing Resistance Input Unit Q64RD Specifications

Number of Channels		4 channels
Output	Temperature Conversion Value	16-bit signed binary (-2,000 to 8,500: value rounded to first decimal place×multiplied by 10) 32-bit signed binary (-200,000 to 850,000: value rounded to third decimal place×multiplied by 1,000)
Output	Scaling Value	16-bit signed binary
Compatible Resistance Temperature Detector		Pt100, JPt100
Temperature Measuring Range	Pt100	-200 to 850°C
Temperature Measuring Range	JPt100	-180 to 600°C
Range Switching	Pt100	-20 to 120°C / -200 to 850°C
Range Switching	JPt100	-20 to 120°C / -180 to 600°C
Precision (Precision With Respect to Maximum Value of Selected Range)	Ambient Temperature: 25±5°C	±0.08%
	Ambient Temperature: 0 to 55°C	±0.25%
Resolution		0.025°C
Output Current for Temperature Detection		1 mA
Conversion Speed		40 ms / channel
Number of Analog Input Points		4 points (4 channels)
Insulation Method		Between temperature-sensing resistance input and sequencer power supply: opto-isolator Between temperature measuring resistor input channels: non-insulated
Dielectric Strength		Between platinum resistance temperature detector input and sequencer power supply: 1,780 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance		Between platinumtemperature-sensing resistance input and sequencer power supply: 10 MΩor more at 500 V DC
Disconnection Detection		Yes (Independently for each channel)
External Wiring Connection Method		18-point screw terminal block (M3 screw)
Number of Occupied Inputs/Outputs		16 points (I/O assignment: intelligent 16 points)
5 V DC Internal Current Consumption		0.60 A
External Dimensions	Height (H)	98 mm
	Width (W)	27.4 mm
	Depth (D)	90 mm
Weight		0.17 kg

Inter-Channel Insulated Temperature-sensing Resistance Input Unit Q64RD-G Specifications

Number of Channels			4 channels
Output	Temperature Conversion Value		16-bit signed binary (-2,000 to 8,500: value rounded to first decimal place×multiplied by 10) 32-bit signed binary (-200,000 to 850,000: value rounded to third decimal place×multiplied by 1,000)
Output	Scaling Value		16-bit signed binary
Compatible Resistance Temperature Detector			Pt100, JPt100, Ni100
Temperature Measuring Range	Pt100		-200 to 850°C
	JPt100		-180 to 600°C
	Ni100		-60 to 180°C
Range Switching	Pt100		-20 to 120°C / 0 to 200°C / -200 to 850°C
	JPt100		-20 to 120°C / 0 to 200°C / -180 to 600°C
	Ni100		-
Precision (Precision With Respect to Maximum Value of Selected Range)	Reference Precision		±Within 0.04%
	Temperature Coefficient	Pt100/JPt100 (-20 to 120°C)	±70 ppm/°C (±0.0070%/°C)
		Pt100/JPt100 (0 to 200°C)	±65 ppm/°C (±0.0065%/°C)
		Pt100/JPt100 (-200 to 850°C)	±50 ppm/°C (±0.0050%/°C)
		Ni100 (-60 to 180°C)	±70 ppm/°C (±0.0070%/°C)
Resolution			0.025°C
Output Current for Temperature Detection			1 mA
Conversion Speed			40 ms / channel
Number of Analog Input Points			4 points (4 channels)
Insulation Method			Between temperature-sensing resistance input and sequencer power supply: opto-isolator insulation Between temperature-sensing resistance input channels: transformer insulation
Dielectric Strength			Between temperature-sensing resistance input and sequencer power supply, between temperature measuring resistor input channels: 1,780 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance			Between resistance temperature detector input and sequencer power supply, between resistance temperature detector input channels: 10 MΩor more at 500 V DC
Disconnection Detection			Yes (Independently for each channel)
External Wiring Connection Method			18-point screw terminal block (M3 screw)
Number of Occupied Inputs/Outputs			16 points (I/O assignment: intelligent 16 points)
5 V DC Internal Current Consumption			0.62 A
External Dimensions	Height (H)		98 mm
	Width (W)		27.4 mm
	Depth (D)		112 mm
Weight			0.20 kg

Thermocouple Input Unit Q64TD Specifications

Number of Channels			4 channels
Output	Temperature Conversion Value		16-bit signed binary (-2,700 to 18,200: value rounded to first decimal place×multiplied by 10)
Output	Scaling Value		16-bit signed binary
Compliant Standard for Thermocouple			JIS C1602-1995
Accuracy of Temperature Measuring Range	Thermocouple Type	Temperature Measuring Range	Conversion accuracy (ambient operating temperature 25±5°C) Temperature characteristics (per 1°C change in ambient operating temperature) Maximum temperature error at ambient temperature of 55°C Effect per 1Ωof wiring resistance
	B	0 to 600°C	-
		600 to 800°C	Conversion accuracy: ±3.0°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±13.0°C Effect per 1Ωof wiring resistance: 0.009°C/Ω
		800 to 1,700°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±12.5°C Effect per 1Ωof wiring resistance: 0.008°C/Ω
		1,700 to 1,820°C	-
	R	-50 to 0°C	-
		0 to 300°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±12.5°C Effect per 1Ωof wiring resistance: 0.011°C/Ω
		300 to 1,600°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.3°C Maximum temperature error at ambient temperature of 55°C: ±9.5°C Effect per 1Ωof wiring resistance: 0.006°C/Ω
		1,600 to 1,760°C	-
	S	-50 to 0°C	-
		0 to 300°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±12.5°C Effect per 1Ωof wiring resistance: 0.011°C/Ω
		300 to 1,600°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.3°C Maximum temperature error at ambient temperature of 55°C: ±9.2°C Effect per 1Ωof wiring resistance: 0.006°C/Ω
		1,600 to 1,760°C	-
	K	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.2% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±11.0°C Effect per 1Ωof wiring resistance: 0.004°C/Ω
		0 to 1,200°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±9.0°C Effect per 1Ωof wiring resistance: 0.002°C/Ω
		1,200 to 1,370°C	-
	E	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or ±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.15% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±8.5°C Effect per 1Ωof wiring resistance: 0.003°C/Ω
		0 to 900°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±6.75°C Effect per 1 Ω of wiring resistance: 0.001°C/Ω
		900 to 1,000°C	-
	J	-210 to -40°C	-
		-40 to 750°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±5.625°C Effect per 1Ωof wiring resistance: 0.002°C/Ω
		750 to 1,200°C	-
	T	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.1% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±6.0°C Effect per 1Ωof wiring resistance: 0.004°C/Ω
		0 to 350°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±2.625°C Effect per 1Ωof wiring resistance: 0.002°C/Ω
		350 to 400°C	-
	N	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.2% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±11.0°C Effect per 1Ωof wiring resistance: 0.006°C/Ω
		0 to 1,250°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±9.375°C Effect per 1Ωof wiring resistance: 0.003°C/Ω
		1,250 to 1,300°C	-
Cold Contact Temperature Compensation Accuracy			±1.0°C
Overall Accuracy			(Overall accuracy) = (Conversion accuracy) + (Temperature characteristics)×(Ambient operating temperature change) + (Cold contact temperature compensation accuracy) *Ambient operating temperature change: Ambient operating temperature outside the range of 25±5°C
Resolution			B, R, S, N: 0.3°C K, E, J, T: 0.1°C
Conversion Speed			40 ms / channel
Number of Analog Input Points			4 points (4 channels + Cold contact compensation channel)
Insulation Method			Between thermocouple input and sequencer power supply: transformer insulation Between thermocouple input channels: transformer insulation Between cold contact compensation input (Pt100) and sequencer power supply: non-insulated
Dielectric Strength			Between thermocouple input and sequencer power supply, between thermocouple input channels: 1,780 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance			Between thermocouple input and sequencer power supply: 100 MΩor more at 500 V DC Between thermocouple input channels: 10 MΩor more at 500 V DC
Disconnection Detection			Yes (Independently for each channel)
External Wiring Connection Method			18-point screw terminal block (M3 screw)
Number of Occupied Inputs/Outputs			16 points (I/O assignment: intelligent 16 points)
5 V DC Internal Current Consumption			0.50 A
External Dimensions	Height (H)		98 mm
	Width (W)		27.4 mm
	Depth (D)		112 mm
Weight			0.25 kg

Inter-Channel Insulated Temperature-sensing Resistance Input Unit Q68RD3-G Specifications

Number of Channels			8 channels
Output	Temperature Conversion Value		16-bit signed binary (-2,000 to 8,500)
Output	Scaling Value		16-bit signed binary
Compatible Resistance Temperature Detector			Pt100, JPt100, Ni100
Temperature Measuring Range	Pt100		-200 to 850°C
	JPt100		-180 to 600°C
	Ni100		-60 to 180°C
Conversion Accuracy	Pt100	-200 to 850°C	±0.8°C (Ambient Temperature: 25±5°C) ±2.4°C (Ambient Temperature: 0 to 55°C)
		-20 to 120°C	±0.3°C (Ambient Temperature: 25±5°C) ±1.1°C (Ambient Temperature: 0 to 55°C)
		0 to 200°C	±0.4°C (Ambient Temperature: 25±5°C) ±1.2°C (Ambient Temperature: 0 to 55°C)
	JPt100	-180 to 600°C	±0.8°C (Ambient Temperature: 25±5°C) ±2.4°C (Ambient Temperature: 0 to 55°C)
		-20 to 120°C	±0.3°C (Ambient Temperature: 25±5°C) ±1.1°C (Ambient Temperature: 0 to 55°C)
		0 to 200°C	±0.4°C (Ambient Temperature: 25±5°C) ±1.2°C (Ambient Temperature: 0 to 55°C)
	Ni100	-60 to 180°C	±0.4°C (Ambient Temperature: 25±5°C) ±1.2°C (Ambient Temperature: 0 to 55°C)
Resolution			0.1°C
Output Current for Temperature Detection			1.0 mA or less
Conversion Speed			320 ms / 8 channels
Number of Analog Input Points			8 points (8 channels)
Insulation Method			Between temperature-sensing resistance input and sequencer power supply, between temperature-sensing resistance input channels: transformer insulation
Dielectric Strength			Between temperature-sensing resistance input and sequencer power supply: 500 V AC rms for 1 minute Between temperature measuring resistor input channels: 1,000 V AC rms for 1 min
Insulation Resistance			Between resistance temperature detector input and sequencer power supply, between resistance temperature detector input channels: 10 MΩor more at 500 V DC
Disconnection Detection			Yes (Independently for each channel)
External Wiring Connection Method			40-pin connector
External Wiring Connection Method	Compatible Connector		A6CON1, A6CON2, A6CON4 (sold separately)
Number of Occupied Inputs/Outputs			16 points (I/O assignment: intelligent 16 points)
5 V DC Internal Current Consumption			0.54 A
External Dimensions	Height (H)		102 mm
	Width (W)		27.4 mm
	Depth (D)		130 mm
Weight			0.20 kg

Inter-Channel Insulated Thermocouple Input Unit Q68TD-G-H01 Specifications

Number of Channels			8 channels
Output	Temperature Conversion Value		16-bit signed binary (-2,700 to 18,200)
Output	Scaling Value		16-bit signed binary
Compliant Standard for Thermocouple			JIS C1602-1995, IEC60584-1(1995), IEC60584-2(1982)
Accuracy of Temperature Measuring Range	Thermocouple Type	Temperature Measuring Range	Conversion accuracy (ambient operating temperature 25±5°C) Temperature characteristics (per 1°C change in ambient operating temperature) Maximum temperature error at ambient temperature of 55°C
	B	0 to 600°C	-
		600 to 800°C	Conversion accuracy: ±3.0°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±13.0°C
		800 to 1,700°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±12.5°C
		1,700 to 1,820°C	-
	R	-50 to 0°C	-
		0 to 300°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±12.5°C
		300 to 1,600°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.3°C Maximum temperature error at ambient temperature of 55°C: ±9.5°C
		1,600 to 1,760°C	-
	S	-50 to 0°C	-
		0 to 300°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±12.5°C
		300 to 1,600°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.3°C Maximum temperature error at ambient temperature of 55°C: ±9.5°C
		1,600 to 1,760°C	-
	K	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.2% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±11.0°C
		0 to 1,200°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±9.0°C
		1,200 to 1,370°C	-
	E	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or ±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.15% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±8.5°C
		0 to 900°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±6.75°C
		900 to 1,000°C	-
	J	-210 to -40°C	-
		-40 to 750°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±5.625°C
		750 to 1,200°C	-
	T	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.1% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±6.0°C
		0 to 350°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±2.625°C
		350 to 400°C	-
	N	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.2% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±11.0°C
		0 to 1,250°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±9.375°C
		1,250 to 1,300°C	-
Cold Contact Temperature Compensation Accuracy			±1.0°C
Overall Accuracy			(Overall accuracy) = (Conversion accuracy) + (Temperature characteristics)×(Ambient operating temperature change) + (Cold contact temperature compensation accuracy) *Ambient operating temperature change: Ambient operating temperature outside the range of 25±5°C
Resolution			B, R, S, N: 0.3°C K, E, J, T: 0.1°C
Sampling Cycle			320 ms / 8 channels
Conversion Speed			320 ms / 8 channels
Number of Analog Input Points			8 points (8 channels + cold contact compensation channel)
Insulation Method			Between thermocouple input channel and sequencer power supply: transformer insulation Between thermocouple input channels: transformer insulation Between cold contact compensation channel and sequencer power supply: non-insulated
Dielectric Strength			Between thermocouple input channel and sequencer power supply: 500 V AC rms for 1 minute Between thermocouple input channels: 1,000 V AC rms for 1 minute
Insulation Resistance			Between thermocouple input channel and sequencer power supply, between thermocouple input channels: 10 MΩor more at 500 V DC
Disconnection Detection			N/A
External Wiring Connection Method			40-pin connector
External Wiring Connection Method	Compatible Connector		A6CON1, A6CON2, A6CON4 (sold separately)
Number of Occupied Inputs/Outputs			16 points (I/O assignment: intelligent 16 points)
5 V DC Internal Current Consumption			0.49 A
External Dimensions	Height (H)		98 mm
	Width (W)		27.4 mm
	Depth (D)		90 mm
Weight			0.18 kg

Inter-Channel Insulated Thermocouple Input Unit Q68TD-G-H02 Specifications

Number of Channels			8 channels
Output	Temperature Conversion Value		16-bit signed binary (-2,700 to 18,200)
Output	Scaling Value		16-bit signed binary
Compliant Standard for Thermocouple			JIS C1602-1995, IEC60584-1(1995), IEC60584-2(1982)
Accuracy of Temperature Measuring Range	Thermocouple Type	Temperature Measuring Range	Conversion accuracy (ambient operating temperature 25±5°C) Temperature characteristics (per 1°C change in ambient operating temperature) Maximum temperature error at ambient temperature of 55°C
	B	0 to 600°C	-
		600 to 800°C	Conversion accuracy: ±3.0°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±13.0°C
		800 to 1,700°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±12.5°C
		1,700 to 1,820°C	-
	R	-50 to 0°C	-
		0 to 300°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±12.5°C
		300 to 1,600°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.3°C Maximum temperature error at ambient temperature of 55°C: ±9.5°C
		1,600 to 1,760°C	-
	S	-50 to 0°C	-
		0 to 300°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±12.5°C
		300 to 1,600°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.3°C Maximum temperature error at ambient temperature of 55°C: ±9.5°C
		1,600 to 1,760°C	-
	K	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.2% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±11.0°C
		0 to 1,200°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±9.0°C
		1,200 to 1,370°C	-
	E	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or ±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.15% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±8.5°C
		0 to 900°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±6.75°C
		900 to 1,000°C	-
	J	-210 to -40°C	-
		-40 to 750°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±5.625°C
		750 to 1,200°C	-
	T	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.1% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±6.0°C
		0 to 350°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±2.625°C
		350 to 400°C	-
	N	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±0.5°C or±0.5% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.2% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±11.0°C
		0 to 1,250°C	Conversion accuracy: ±0.5°C or±0.25% of the measured temperature, whichever is greater Temperature characteristics: ±0.06°C or ±0.02% of the measured temperature, whichever is greater Maximum temperature error at ambient temperature of 55°C: ±9.375°C
		1,250 to 1,300°C	-
Cold Contact Temperature Compensation Accuracy			±1.0°C
Overall Accuracy			(Overall accuracy) = (Conversion accuracy) + (Temperature characteristics)×(Ambient operating temperature change) + (Cold contact temperature compensation accuracy) *Ambient operating temperature change: Ambient operating temperature outside the range of 25±5°C
Resolution			B, R, S, N: 0.3°C K, E, J, T: 0.1°C
Sampling Cycle			20 ms / 8 channels
Conversion Speed			640 ms / 8 channels
Number of Analog Input Points			8 points (8 channels + cold contact compensation channel)
Insulation Method			Between thermocouple input channel and sequencer power supply: transformer insulation Between thermocouple input channels: transformer insulation Between cold contact compensation channel and sequencer power supply: non-insulated
Dielectric Strength			Between thermocouple input channel and sequencer power supply: 500 V AC rms for 1 minute Between thermocouple input channels: 1,000 V AC rms for 1 minute
Insulation Resistance			Between thermocouple input channel and sequencer power supply, between thermocouple input channels: 10 MΩor more at 500 V DC
Disconnection Detection			Yes (Independently for each channel)
External Wiring Connection Method			40-pin connector
External Wiring Connection Method	Compatible Connector		A6CON1, A6CON2, A6CON4 (sold separately)
Number of Occupied Inputs/Outputs			16 points (I/O assignment: intelligent 16 points)
5 V DC Internal Current Consumption			0.65 A
External Dimensions	Height (H)		102 mm
	Width (W)		27.4 mm
	Depth (D)		130 mm
Weight			0.22 kg

Inter-Channel Insulated Thermocouple / Microvoltage Input Unit Q64TDV-GH Specifications

Number of Channels			4 channels
Output	Temperature Conversion Value		16-bit signed binary (-2,700 to 18,200: value rounded to first decimal place×multiplied by 10)
	Scaling Value		16-bit signed binary
	Microvoltage Conversion Value		16-bit signed binary (-25,000 to 25,000)
Compliant Standard for Thermocouple			JIS C1602-1995
Accuracy of Temperature Measuring Range	Thermocouple Type	Temperature Measuring Range	Conversion accuracy (ambient operating temperature 25±5°C) Temperature characteristics (per 1°C change in ambient operating temperature) Maximum temperature error at ambient temperature of 55°C Effect per 1Ωof wiring resistance
	B	0 to 600°C	-
		600 to 800°C	Conversion accuracy: ±4.0°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±14.0°C Effect per 1Ωof wiring resistance: 0.011°C/Ω
		800 to 1,700°C	Conversion accuracy: ±3.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±13.5°C Effect per 1Ωof wiring resistance: 0.010°C/Ω
		1,700 to 1,820°C	-
	R	-50 to 0°C	-
		0 to 300°C	Conversion accuracy: ±4.0°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±14.0°C Effect per 1Ωof wiring resistance: 0.013°C/Ω
		300 to 1,600°C	Conversion accuracy: ±3.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±13.5°C Effect per 1Ωof wiring resistance: 0.008°C/Ω
		1,600 to 1,760°C	-
	S	-50 to 0°C	-
		0 to 300°C	Conversion accuracy: ±4.0°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±14.0°C Effect per 1Ωof wiring resistance: 0.013°C/Ω
		300 to 1,600°C	Conversion accuracy: ±3.5°C Temperature characteristics: ±0.4°C Maximum temperature error at ambient temperature of 55°C: ±13.5°C Effect per 1Ωof wiring resistance: 0.008°C/Ω
		1,600 to 1,760°C	-
	K	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.25°C Maximum temperature error at ambient temperature of 55°C: ±8.25°C Effect per 1Ωof wiring resistance: 0.005°C/Ω
		0 to 200°C	Conversion accuracy: ±1.5°C Temperature characteristics: ±0.25°C Maximum temperature error at ambient temperature of 55°C: ±7.75°C Effect per 1Ωof wiring resistance: 0.002°C/Ω
		200 to 1,200°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.25°C Maximum temperature error at ambient temperature of 55°C: ±8.25°C Effect per 1Ωof wiring resistance: 0.002°C/Ω
		1,200 to 1,370°C	-
	E	-270 to -200°C	-
		-200 to 200°C	Conversion accuracy: ±1.5°C Temperature characteristics: ±0.15°C Maximum temperature error at ambient temperature of 55°C: ±5.25°C Effect per 1Ωof wiring resistance: 0.003°C/Ω
		200 to 900°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.15°C Maximum temperature error at ambient temperature of 55°C: ±5.75°C Effect per 1Ωof wiring resistance: 0.001°C/Ω
		900 to 1,000°C	-
	J	-210 to -40°C	-
		-40 to 200°C	Conversion accuracy: ±1.5°C Temperature characteristics: ±0.15°C Maximum temperature error at ambient temperature of 55°C: ±5.25°C Effect per 1Ωof wiring resistance: 0.002°C/Ω
		200 to 750°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.15°C Maximum temperature error at ambient temperature of 55°C: ±5.75°C Effect per 1Ωof wiring resistance: 0.002°C/Ω
		750 to 1,200°C	-
	T	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.1°C Maximum temperature error at ambient temperature of 55°C: ±4.5°C Effect per 1Ωof wiring resistance: 0.004°C/Ω
		0 to 350°C	Conversion accuracy: ±1.5°C Temperature characteristics: ±0.1°C Maximum temperature error at ambient temperature of 55°C: ±4.0°C Effect per 1Ωof wiring resistance: 0.002°C/Ω
		350 to 400°C	-
	N	-270 to -200°C	-
		-200 to 0°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.25°C Maximum temperature error at ambient temperature of 55°C: ±8.75°C Effect per 1Ωof wiring resistance: 0.007°C/Ω
		0 to 200°C	Conversion accuracy: ±2.0°C Temperature characteristics: ±0.25°C Maximum temperature error at ambient temperature of 55°C: ±8.25°C Effect per 1Ωof wiring resistance: 0.003°C/Ω
		200 to 1,250°C	Conversion accuracy: ±2.5°C Temperature characteristics: ±0.25°C Maximum temperature error at ambient temperature of 55°C: ±8.75°C Effect per 1Ωof wiring resistance: 0.002°C/Ω
		1,250 to 1,300°C	-
Cold Contact Temperature Compensation Accuracy			±1.0°C
Overall Accuracy			(Overall accuracy) = (Conversion accuracy) + (Temperature characteristics)×(Ambient operating temperature change) + (Cold contact temperature compensation accuracy) *Ambient operating temperature change: Ambient operating temperature outside the range of 25±5°C
Resolution			B: 0.7°C R, S: 0.8°C K, T: 0.3°C E: 0.2°C J: 0.1°C N: 0.4°C
Microvoltage Input	Input Range		-100 to +100 mV (Input resistance 2 MΩor more)
	Accuracy		±0.2 mV (ambient operating temperature: 25±5°C) ±0.8 mV (ambient operating temperature: 0 to 55°C)
	Resolution		4μ V
Absolute Maximum Input			±5 V
Sampling Cycle			20 ms / channel
Conversion Speed			Sampling cycle×3
Number of Analog Input Points			4 points (4 channels + Cold contact compensation channel)
Insulation Method			Between thermocouple input / microvoltage input and sequencer power supply: transformer insulation Between thermocouple input / microvoltage input channels: transformer insulation Between cold contact compensation input (Pt100) and sequencer power supply: non-insulated
Dielectric Strength			Between thermocouple input / microvoltage input and sequencer power supply, between thermocouple input / microvoltage input channels: 1,780 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance			Between thermocouple input / microvoltage input and sequencer power supply: 100 MΩor more at 500 V DC Between thermocouple input / microvoltage input channels: 10 MΩor more 500 V DC
Disconnection Detection			Yes (Independently for each channel)
External Wiring Connection Method			18-point screw terminal block (M3 screw)
Number of Occupied Inputs/Outputs			16 points (I/O assignment: intelligent 16 points)
5 V DC Internal Current Consumption			0.50 A
External Dimensions	Height (H)		98 mm
	Width (W)		27.4 mm
	Depth (D)		112 mm
Weight			0.25 kg

: 30; 45; 60

Part Number
Q68RD3-G

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	Number of Input Points (Number of Input CH)	Input I/F (Input Target)	Heater Burnout Detection Function	Sampling Cycle (Temperature Control)	Channel-to-channel isolation	Terminal shape	Temperature Conversion Speed
	SGD 1,186.40	1 Piece(s)		Quote	8	Temperature Measuring Resistor	○	-	Insulation	40-pin connector	320ms/8ch

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Basic Information

Type	Temperature control	Representative Standard	CE / UL

Please check the type/dimensions/specifications of the part Q68RD3-G in the MELSEC-Q Series Temperature Input Unit series.

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Specification/Dimensions

Sampling Cycle (Temperature Control)
- 20ms/1ch
- 320ms/8ch
Clear
Number of Input Points (Number of Input CH)
4

8
Clear
Input I/F (Input Target)
- Thermocouple
- Temperature Measuring Resistor
Clear
Heater Burnout Detection Function
- ×
- ○
Clear
Channel-to-channel isolation
- Insulation
- Non-Insulated
Clear
Terminal shape
- 18-point terminal block
- 40-pin connector
Clear
Temperature Conversion Speed
- (Sampling Cycle × 3)/1 CH
- 40ms/1ch
- 320ms/8ch
- 640ms/8ch
Clear

Days to Ship

All

20 Day(s) or Less

91 Day(s) or Less
Clear

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The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Similar Part Numbers

Part Number
Q64RD
Q64RD-G
Q64TD
Q64TDV-GH
Q68TD-G-H01
Q68TD-G-H02

Standard Unit Price	Minimum order quantity	Days to Ship	Number of Input Points (Number of Input CH)	Input I/F (Input Target)	Heater Burnout Detection Function	Sampling Cycle (Temperature Control)	Channel-to-channel isolation	Terminal shape	Temperature Conversion Speed
SGD 778.50	1 Piece(s)	91 Day(s)	4	Temperature Measuring Resistor	○	-	Non-Insulated	18-point terminal block	40ms/1ch
SGD 1,027.70	1 Piece(s)	Quote	4	Temperature Measuring Resistor	○	-	Insulation	18-point terminal block	40ms/1ch
SGD 949.20	1 Piece(s)	20 Day(s)	4	Thermocouple	○	-	Insulation	18-point terminal block	40ms/1ch
SGD 949.20	1 Piece(s)	Quote	4	Thermocouple	○	20ms/1ch	Insulation	18-point terminal block	(Sampling Cycle × 3)/1 CH
SGD 1,186.40	1 Piece(s)	Quote	8	Thermocouple	×	320ms/8ch	Insulation	40-pin connector	320ms/8ch
SGD 1,186.40	1 Piece(s)	Quote	8	Thermocouple	○	320ms/8ch	Insulation	40-pin connector	640ms/8ch

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MELSEC-Q Series Temperature Input Unit (Q68RD3-G)

Temperature-sensing Resistance Input Unit Q64RD Specifications

Inter-Channel Insulated Temperature-sensing Resistance Input Unit Q64RD-G Specifications

Thermocouple Input Unit Q64TD Specifications

Inter-Channel Insulated Temperature-sensing Resistance Input Unit Q68RD3-G Specifications

Inter-Channel Insulated Thermocouple Input Unit Q68TD-G-H01 Specifications

Inter-Channel Insulated Thermocouple Input Unit Q68TD-G-H02 Specifications

Inter-Channel Insulated Thermocouple / Microvoltage Input Unit Q64TDV-GH Specifications

Basic Information

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Specification/Dimensions

Sampling Cycle (Temperature Control)

Number of Input Points (Number of Input CH)

Input I/F (Input Target)

Heater Burnout Detection Function

Channel-to-channel isolation

Terminal shape

Temperature Conversion Speed

Days to Ship

Specify Alterations

Similar Part Numbers

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