ICS Triplex T9402

ICS Triplex  T9402    Digital Input Module, 24V dc, 8/16 channel 

The T9401/2 digital input module monitors eight (T9401) or sixteen (T9402) isolated digital input channels and notifies the processor module of each field device state and channel condition. Each channel provides both digital state and analogue voltage data to the processor module for field device state, line monitoring and field fault detection.

The input module provides local module and channel status indications through its front panel LEDs, the same indications can be connected to application variables and viewed at the Workbench. Comprehensive diagnostics at both system and module levels generate clear fault indications which help rapid maintenance and repair.

The module incorporates signal and power isolation circuits,which separate each input channel from the rest of the system,protecting the controller from field faults. An independent watchdog arrangement monitors the module operation and provides additional fault containment by a shutdown mechanism should a fault occur.

When a controller uses a digital input module in a dual or TMR configuration, plant maintenance personnel can fit a new input module without interrupting the input signals. 

Digital Input Line Monitoring

Each digital input module parameters is set up through the AADvance Workbench configuration tools. Switching levels for each digital input channel are configurable at the module and the channel level. Each input has five configurable voltage bands (there are eight distinct switching thresholds to allow hysteresis), each of which can be adjusted through the AADvance Workbench to provide line monitoring, field loop monitoring and additional field device diagnostics. 

The unit is mounted inside a secure protective box. The box is portable and when it is placed on a flat surface the lid can be lifted and secured in the open position with two bolts. It fully self contained and comes supplied with a set of modules and internal wiring to a display and control panel. 

Other models：T9000 ， T9110 ，T9300 ，T9141， T9401 ， T9402 ，T9431 ， T9432 ，T9801 ， T9802 ，T9451 ， T9852  ，T9481 ， T9482 ，T9832， T9852

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