Description
Designed for high-accuracy thermal monitoring in industrial network environments, the Mitsubishi Electric AJ65BT-64RD4 serves as a specialized 4-channel platinum resistance temperature detector (RTD) input module within the CC-Link remote I/O architecture. This module interfaces with 4-wire Pt100 and JPt100 RTD sensors, converting micro-resistance changes into highly precise digital outputs for PLC integration.
The unit features customizable resolution configurations, outputting either 16-bit signed binary values for standard setups or 32-bit signed binary values for applications requiring precise measurements up to three decimal places. Equipped with photocoupler isolation between the temperature inputs and the main CC-Link transmission lines, the module protects sensitive control circuitry from field-side electrical surges and noise interference.
Features
- Supports up to 4 independent temperature measurement channels using high-stability 4-wire RTD configurations.
- Compatible with both Pt100 and JPt100 platinum resistance temperature detectors.
- Flexible digital output options: 16-bit signed binary (-1800 to 6000) or 32-bit signed binary (-180000 to 600000).
- Outstanding measurement resolution of 0.025 degC for high-precision thermal tracking.
- Fast conversion speed of 40 ms per channel, ensuring near real-time thermal response.
- Secure photocoupler isolation between the measurement terminals and the CC-Link communication bus.
Applications
- Precision temperature monitoring in chemical processing and petrochemical plants.
- Environmental chamber and industrial HVAC control.
- Boiler and furnace thermal loop feedback systems.
- Process control monitoring in food, beverage, and pharmaceutical manufacturing.
Technical Specifications
Category
Specification Parameter
Value / Details
| Product Details |
Manufacturer |
Mitsubishi Electric |
| Part Number / Model |
AJ65BT-64RD4 |
| Network / Communication Series |
CC-Link (Remote Device Station, Ver. 1) |
| Input Specifications |
Number of Channels |
4 channels |
| Sensor Compatibility |
Pt100, JPt100 (4-wire type) |
| Measurement Range |
-180 to 600 degC |
| Sensor Detection Output Current |
1 mA |
| Resolution |
0.025 degC |
| Performance & Accuracy |
Conversion Speed |
40 ms / channel |
| Accuracy (Ambient: 25 ± 5 degC) |
±0.1% (with respect to maximum value) |
| Accuracy (Ambient: <20 degC, >30 degC) |
±0.25% (with respect to maximum value) |
| Electrical & Isolation |
Power Supply Voltage |
24 VDC (18 to 30 VDC allowable) |
| Current Consumption |
0.17 A |
| Isolation Method |
Photocoupler isolation (Between input channels and CC-Link; channels are non-isolated from each other) |
| Withstand Voltage |
500 VAC for 1 minute |
| Physical Characteristics |
Height |
65 mm |
| Width |
151.9 mm |
| Depth |
63 mm |
| Weight |
0.38 kg |
| Environmental Limits |
Operating Ambient Temperature |
0 to 55 degC |
| Storage Ambient Temperature |
-20 to 75 degC |
| Ambient Operating Humidity |
10 to 90% RH (non-condensing) |
Connections and Interfaces
| Terminal Connection Block |
Specification / Type |
Application |
| Communication & Power Terminal |
7-point, 2-piece terminal block (M3.5 screws) |
CC-Link network cable and 24 VDC unit power supply input |
| I/O Channel Terminal |
27-point, 2-piece terminal block (M3.5 screws) |
RTD sensor connection (4-wire layout per channel) |
Installation Guidelines
-
Mounting: Install within a secure, dust-free control cabinet. Mount securely using integrated DIN rail connectors or direct screw mounting.
-
Wiring: Use CC-Link dedicated high-shield cables for network communication. Ensure the 4-wire RTD signal lines are routed away from high-voltage AC cables to prevent electromagnetic coupling.
-
Grounding: Connect the ground terminal securely to the panel earth ground using a dedicated wire of 2 mm² or larger to assure optimal noise immunity.
Compliance and Certifications
- Meets IEC 61131-2 specifications for programmable controllers.
- Conforms to JIS B 3502 vibration and impact resistance standards.