3 SPECIFICATIONS

MELSEC-Q

3

Model name

Q64AD

 

 

Q68ADV

 

Q68ADI

Item

 

 

 

 

 

 

 

 

 

 

 

 

 

80

s/channel

 

Conversion speed

(When there is temperature drift, the time calculated by adding 160

s will be used

 

 

regardless of the number of channels used)

 

Absolute maximum input

 

Voltage : ± 15 V

Current : ± 30 mA

 

E2PROM write count

 

 

 

Max. 100 thousand times

 

Insulation method

Between the I/O terminal and PLC power supply : Photocoupler insulation

 

 

 

Between channels : Non-insulated

 

 

 

 

Dielectric withstand voltage

Between the I/O terminal and PLC power supply: 500VAC for 1 minute

Insulation resistance

Between the I/O terminal and PLC power supply: 500VDC 20M or more

Number of occupied points

 

 

 

16 points

 

Connection terminals

 

 

 

18-point terminal block

 

Applicable wire size

 

 

 

0.3 to 0.75 mm2

 

Applicable solderless terminal

R1.25-3 (A solderless terminal with sleeve cannot be used)

Internal current consumption

0.63 A

 

 

0.64 A

 

 

0.64 A

(5 V DC)

 

 

 

 

 

 

 

 

 

 

 

Weight

0.18 kg

 

 

0.19 kg

 

0.19 kg

REMARK

See the user’s manual for the CPU module being used for general specifications of the A/D converter modules.

3.1.2 I/O conversion characteristic

The I/O conversion characteristic represents the angle formed by a straight line connecting the "offset value" and "gain value" when the analog signals (voltage or current input) from outside the PLC are converted to digital values.

Offset value

The offset value denotes the analog input value (voltage or current) that makes the digital output value 0.

Gain value

The gain value denotes the analog input value (voltage or current) that makes the digital output value:

4000 (in normal resolution mode)

12000 (when 0 to 5 V, 1 to 5 V, 4 to 20 mA, 0 to 20 mA or the user range setting is selected in high resolution mode)

16000 (when -10 to 10 V or 0 to 10 V is selected in high resolution mode).

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Mitsubishi Electronics Q68ADV, Q68ADI, Q64AD user manual 2 I/O conversion characteristic, Offset value, Gain value

Q68ADV, Q68ADI, Q64AD specifications

Mitsubishi Electronics, a renowned leader in automation technology, has developed advanced analog input modules that play a crucial role in numerous industrial applications. Among them, the Q64AD, Q68ADI, and Q68ADV models stand out with their impressive features and capabilities tailored for precise data acquisition and control.

The Q64AD module is designed for high-performance analog signal processing. It offers up to 16 channels of differential input, making it suitable for applications requiring multiple sensor readings simultaneously. The resolution of 16 bits enables accurate data capture, ensuring that subtle variations in process variables, such as temperature or pressure, are detectable. One of its key advantages is the high-speed sampling capability, allowing data collection at rates of up to 100 milliseconds per channel, essential for real-time monitoring in fast-paced environments.

In contrast, the Q68ADI model enhances the versatility of the analog input system. It includes built-in isolators, providing additional protection against noise and interference commonly found in industrial settings. This isolation feature improves the reliability of sensor readings, especially in harsh environments where electrical noise can impact performance. Furthermore, the Q68ADI supports both voltage and current input types, making it adaptable to various sensor configurations, such as thermocouples and RTDs, expanding its usability across different applications.

The Q68ADV module takes versatility a step further by integrating advanced diagnostic features. This model offers a range of additional functions, including built-in fault detection and self-diagnosis capabilities that identify issues before they escalate into significant problems. It also features temperature compensation and linearization algorithms, which enhance the accuracy of reading from thermocouples and other temperature sensors. The Q68ADV module is ideal for applications demanding high reliability and stringent performance standards, making it indispensable in industries like pharmaceuticals and food processing.

All three models are designed to seamlessly integrate with Mitsubishi's PLC systems, ensuring smooth communication and data exchange. They support various protocols, making them compatible with a wide range of devices and systems. Collectively, the Q64AD, Q68ADI, and Q68ADV modules exemplify Mitsubishi Electronics' commitment to delivering high-quality, reliable, and innovative solutions in industrial automation, empowering businesses to achieve greater efficiency and operational excellence.