Description
Key Technical Specifications
- Input & Detection Performance: It has 40 independent digital input channels, and each channel adopts a TMR architecture. Each field input is triplicated and the input voltage is measured by a sigma-delta input circuit. It supports a nominal 24V DC input, and the actual applicable input voltage range is 18 – 32V DC. It is equipped with selectable line monitoring function for each channel, which can detect open and short-circuit faults of field wiring when matching with field switches. In addition, the 50/60Hz digital filtering function can be configured to eliminate field-induced noise.
- Isolation & Diagnostic Capabilities: The isolation voltage between the channel and the backplane reaches 1500V, which can effectively isolate interference between circuits and protect the module and the backplane. It has comprehensive automatic diagnosis and self-test functions. The on-board SOE reporting function with 1ms resolution can record the state change events of the input signal in time, which is convenient for maintenance personnel to trace and analyze faults.
- Installation & Physical Traits: It supports hot replacement. It can be replaced online through the adjacent dedicated slot or intelligent slot configuration, which avoids system shutdown caused by module maintenance. The module has a standard shape and can be seamlessly integrated into the existing Trusted system rack. It has a 1500V channel-to-backplane isolation design, and its robust structure can adapt to harsh industrial environments.
ICS Triplex T8403C
Field Application & Problem Solved
In large chemical plants, the monitoring system of reaction kettles, pipelines and other equipment needs to collect a large number of switch signals such as pressure switches and temperature limit switches. The traditional single-channel input module is prone to system downtime due to channel faults. After the T8403C is adopted, its TMR architecture can realize seamless switching when a single channel fails, ensuring the continuous collection of monitoring signals and avoiding safety accidents caused by system suspension.
In offshore oil drilling platforms, the harsh marine environment is easy to cause damage to the field wiring of the control system. The T8403C’s line monitoring function can timely detect open and short-circuit faults of the wiring, and the maintenance personnel can quickly repair it according to the diagnostic information, reducing the downtime of the drilling operation and improving the production efficiency.
ICS Triplex T8403C
Installation & Maintenance Pitfalls (Expert Tips)
- Wiring Isolation Attention: When wiring, it is necessary to ensure that the field wiring and the backplane circuit are isolated as required. Avoid mixing the wiring of the module with high-voltage cables to prevent the isolation barrier from being broken down due to excessive interference, which will affect the normal operation of the module. After wiring, check the insulation performance between channels.
- Parameter Configuration Standardization: The voltage threshold for judging the input state of the module can be configured per channel. During commissioning, it is necessary to set the appropriate threshold according to the parameters of the connected field sensors and switches. If the threshold is set improperly, it may lead to false reporting or missing reporting of input signals. At the same time, the line monitoring function of the corresponding channel should be enabled according to the actual wiring situation.
- Hot-Swap Operation Specifications: When performing hot-swap operations, special tools should be used to avoid touching the pins of the backplane during the replacement process to prevent short circuits. After replacing the new module, it is necessary to verify whether the SOE reporting function and line monitoring function are normal through the upper software to ensure that the new module is fully compatible and works stably.
