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Product Advantages
Industrial-Grade High Reliability: IP67 protection rating, wide operating temperature range from -20°C to +60°C, with vibration and strong electromagnetic interference resistance. It works reliably in harsh environments with dust, humidity and high temperature.
High-Speed Real-Time Performance: Maximum bus rate up to 12 Mbaud. Equipped with a high-performance processor, it runs complex control algorithms and delivers millisecond-level response.
Flexible Scalable Architecture: A single module can connect up to 24 I/O modules. The modular design enables seamless expansion and on-site maintenance.
Seamless Multi-Protocol Integration: Natively compatible with PROFIBUS DP, PROFINET, Modbus and EtherCAT, fitting mainstream industrial networks.
Compact & Easy Deployment: Measuring 85×30×25 mm and weighing 150 g, it adopts DIN rail mounting to save cabinet space.
Product Specifications

Core Parameters
Model: D202593 (ACN Series)Power Supply: 10~32 VDC, redundant power supply supportedCommunication Interfaces: Ethernet, Serial, PROFIBUS DP and customized interfacesOperating Temperature: -20°C ~ +60°CProtection Class: IP67 (dust-tight and water immersion resistant)Dimensions / Weight: 85×30×25 mm / 150 g
Functional Features
Real-Time Control: Supports complex logics including PID control, sequence control and interlock.Data Processing: High-speed data acquisition, filtering, calculation and historical archiving.Remote Operation & Maintenance: Enables remote diagnosis, program download and status monitoring.Safety Mechanism: Hardware-based error detection, safety interlock and power-off protection.

Application Scenarios
Pulp & Paper: Process control for headboxes, dryers, calenders and other equipment.
Power & Energy: Control of boilers, turbines and auxiliary equipment in thermal, hydro and wind power plants.
Chemical & Metallurgy: Automation for reactors, distillation columns, rolling lines and blast furnaces.
Mining & Building Materials: Distributed control of mills, conveyor lines and kilns.
Water Treatment & Environmental Protection: Systems for wastewater treatment, reverse osmosis and waste gas treatment.


FAQ
Q: Communication lost and indicator light not flashing?A: ① Check if the power supply is stable (10~32 VDC);
② Verify bus wiring and shield grounding; ③ Ensure baud rate and address match the master station;
④ Replace the bus cable or interface module.
Q: No response after power-on and indicator light stays off?A: ① Confirm power voltage and polarity;
② Inspect the power fuse;
③ Check if the module is triggered by over-temperature or over-current protection, power off and cool down before restarting; ④ Return to the factory for inspection in case of hardware failure.
Q: How to realize remote program download and monitoring?A: ① Connect the module Ethernet port to the plant VPN;
② Set a static IP and open ports for programming software;
③ Use the remote connection function of Valmet DNA to complete program download, online monitoring and fault diagnosis.
Q: Can it be installed outdoors directly thanks to IP67 protection?A: IP67 only provides protection against temporary water immersion. It shall not be exposed to direct sunlight or rain outdoors for a long time. Please equip it with a rainproof and dustproof cabinet to prevent UV aging and damage from extreme temperatures.
Q: How to communicate with third-party devices such as inverters?A: Modbus RTU/TCP or PROFIBUS DP is recommended.
① Confirm the supported protocol of the third-party device;
② Configure the module as master or slave station accordingly;
③ Define addresses and formats of data registers to complete data exchange.
