Description
Key Technical Specifications
- Comprehensive Protection Mechanisms: Each input channel of the module is equipped with a 50mA, 125V Type T fuse, which can quickly cut off the circuit when an overcurrent fault occurs, avoiding damage to the module and subsequent control equipment. At the same time, the channel isolation design that can withstand ±1.5kVDC for 1 minute can effectively resist voltage surges and transient interference in industrial environments, ensuring the integrity of signal transmission.
- Stable Signal Acquisition Performance: With 13-bit resolution and 5mV input measurement voltage resolution, the module can accurately capture weak digital signal changes, laying a foundation for the upper control system to make accurate decisions. Its (5.125±0.2)% kΩ stable channel load minimizes the load on the connected input devices and reduces signal distortion caused by load mismatch.
- Strong Compatibility and Expansion: As a digital input termination assembly, it is compatible with T9401/2 input modules, which is convenient for users to integrate it into existing ICS Triplex system architectures. In addition, it can be expanded online with the AAdvance series controller without interrupting the system operation, adapting to the expansion needs of large-scale control systems.
Field Application & Problem Solved
- Oil and Gas Refinery Emergency Shutdown System: In oil and gas refineries, emergency shutdown systems need to collect digital signals from various detection equipment such as gas sensors and pressure switches in real time. The T9802 module can stably acquire these signals and transmit them to the control center. Its SIL 3 certification and fuse protection function can avoid signal transmission failure caused by harsh environments such as high temperature and corrosion in the refinery, and prevent delays in emergency shutdown actions due to module faults, thus reducing the risk of explosions and leaks.
- Nuclear Power Plant Turbine Control System: The stable operation of turbines in nuclear power plants is crucial. The T9802 module is used to collect digital signals such as the speed and vibration of the turbine. Its high-voltage isolation performance can resist the strong electromagnetic interference in the nuclear power plant environment, ensuring that the signal is not interfered with. And the reliable signal acquisition capability enables the control system to adjust the turbine operation parameters in time, avoiding equipment damage or safety accidents caused by inaccurate signal feedback.
Installation & Maintenance Pitfalls (Expert Tips)
- Standardize Wiring Operations: The maximum conductor cross-section for the module’s wiring is 1.31mm² (16 AWG), and the stripping length should be controlled at 6mm. During installation, it is necessary to strictly follow this standard to avoid poor contact caused by inappropriate wire specifications or stripping length. At the same time, ensure that the wiring is firm to prevent signal interruption due to loose connections under vibration conditions.
- Pay Attention to Fuse Replacement: When a channel fuse blows, it is necessary to use the same specification (50mA, 125V, Type T) fuse for replacement. Do not use fuses with inconsistent specifications, otherwise, the channel protection function will fail, and the module may be damaged due to overcurrent. Before replacement, cut off the power supply to avoid electric shock hazards.
- Regular Isolation Performance Detection: In long-term use, the insulation performance of the module may decline due to environmental erosion. It is necessary to regularly detect the channel isolation voltage. Once it is found that it cannot reach the standard of withstanding ±1.5kVDC for 1 minute, timely maintain or replace the module to prevent signal interference or module failure caused by insufficient isolation performance.
