Product Analysis: Mitsubishi R60AD4 Analog Module
The Mitsubishi R60AD4 is a high-speed, high-resolution Analog-to-Digital (A/D) converter module for the MELSEC iQ-R Series. Designed for precision process control, this module converts external analog signals (voltage or current) into 16-bit digital data for the PLC CPU. It is an essential component for monitoring pressure sensors, flow meters, temperature transmitters, and other critical analog instruments in automated manufacturing and chemical processing.
High-Speed Conversion and Precision Logic
The R60AD4 features four independent input channels with an incredible conversion speed of 80 microseconds per channel. This rapid sampling rate allows the system to react almost instantaneously to process changes, which is vital for high-speed safety loops and precision dosing. With a resolution of 1/32,000, it captures even the smallest fluctuations in signal, ensuring the highest level of accuracy for your control algorithms. The module also includes advanced digital filtering and scaling functions to simplify programming.
Key Technical Characteristics
- Part Number: R60AD4.
- Input Channels: 4 Channels (Isolated).
- Input Ranges: -10 to +10V DC / 0 to 20mA DC.
- Resolution: 16-bit (up to 1/32,000).
- Conversion Speed: 80 µs / channel.
- Accuracy: ±0.1% (Ambient 25°C).
- Isolation: Photocoupler between input and bus.
- Connection: 18-point terminal block.
Advanced Filtering and Diagnostics
Beyond basic conversion, the R60AD4 provides intelligent functions such as Moving Average and First-order Delay Filter, which help eliminate electrical noise without sacrificing response time. It also features scaling functions that allow the digital value to be expressed in engineering units (e.g., Liters/min or PSI) directly within the module hardware. Integrated diagnostic LEDs and buffer memory error codes allow for rapid troubleshooting of sensor failures or wiring issues.
| Feature | Value |
| External 24V Current | 0.12 A |
| Internal 5V Current | 0.16 A |
| Standard Compliance | RoHS, CE, UL |
Technical Note
When installing the R60AD4, always use shielded twisted-pair cables for analog signals to prevent EMI from affecting the conversion accuracy. The module’s isolation provides high resistance to common-mode noise, but proper grounding of the shield at the PLC side is recommended for optimal performance in high-power environments.
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