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Specification & Description
| Specification | Description |
|---|---|
| Part Number | A68RD4 |
| Manufacturer | Mitsubishi |
| Part Category | Temperature Sensor Input Module |
| Measuring Method | 4-wire type |
| Compatible Sensors | Pt100 (JIS C1604-1989, DIN 43760-1980), JPt100 (JIS C1604-1981) |
| Output Current for Detection | 4.2mA (MIN), 4.7mA (MAX) |
| Output Data | 16-bit, signed binary data (-1800 to 6000: Value to first decimal place 10 times) |
| Temperature Input Range | Pt100: -180 to 600°C (27.10 to 313.71Ω), JPt100: -180 to 600°C (25.80 to 317.28Ω) |
| Accuracy | 1% (accuracy to full-scale) |
| Resolution | 0.025 |
| Conversion Speed | 40ms / 1 channel |
| Number of Input Points | 2 channels/1 module |
| Insulation Method | Photocoupler-insulated (input to PLC power supply), Non-insulated (input to channel) |
| Dielectric Withstand Voltage | 500VAC for 1 minute (input to PLC power supply) |
| Wire Break Detection | Commonly detected on all channels |
| Number of Occupied I/O Points | 32 points |
| Connection Terminals | 20-point terminal block |
| Internal Current Consumption | 0.39A (5VDC) |
| Weight | 0.43kg |
| Dimensions | 250mm (H) x 37.5mm (W) x 131mm (D) |
| Country of Origin | - |
The Mitsubishi A68RD4 is a high-precision temperature sensor input module designed for integration with Mitsubishi PLC systems. This module is specifically engineered to support Pt100 and JPt100 platinum resistance thermometers, conforming to JIS and DIN standards. The A68RD4 utilises a 4-wire measurement system, ensuring accurate temperature readings by compensating for lead wire resistance.
With a robust design, the A68RD4 offers reliable performance in industrial environments. It features 8 input channels, each capable of detecting temperature ranges from -180°C to 600°C. The module outputs temperature values in 16-bit signed binary data, providing precise and detailed measurements.
The A68RD4 is equipped with advanced functionalities such as disconnection detection, which identifies any disconnection in the platinum resistance thermometer or conductor. Additionally, it allows for conversion enable/disable settings for each channel, optimising sampling time and preventing unnecessary detections on unused channels.
This module is designed with a compact form factor, making it suitable for various industrial applications where space is a constraint. It also includes a 38-point terminal block for secure and straightforward connections. The A68RD4's insulation method ensures safety and reliability, with photocoupler-insulated inputs and a dielectric withstand voltage of 500VAC for one minute.
Ideal for industries requiring precise temperature monitoring and control, the Mitsubishi A68RD4 temperature sensor input module is a dependable choice for enhancing the capabilities of your PLC system.
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Frequently Asked Questions
What type of input does this module support?
The Mitsubishi A68RD4 supports Pt100 and JPt100 temperature sensors, conforming to JIS and DIN standards.
How many channels does this module have?
The A68RD4 module has 2 temperature input channels.
What is the measurement method used by this module?
The A68RD4 uses a 4-wire measurement method for temperature sensing.
What is the output format of the temperature value?
The temperature value is output as 32-bit signed binary data, ranging from -180000 to 600000, representing values to the third decimal place.
What is the conversion speed of this module?
The conversion speed for the A68RD4 is 40ms per channel.
What is the accuracy of the temperature measurements?
The accuracy of the A68RD4 is 1% of the full-scale value.
What is the internal current consumption of this module?
The internal current consumption of the A68RD4 is 0.39A at 5VDC.
What are the dimensions of this module?
The dimensions of the A68RD4 are 130mm (H) x 34.5mm (W) x 107.4mm (D).
Does this module support wire break detection?
Yes, the A68RD4 supports common wire break detection for all channels.
What type of insulation method is used in this module?
The A68RD4 uses a photocoupler-insulated method across the platinum resistance thermometer input and the PLC power supply, but it is non-insulated across the input channels.
