I/O modules

Input Architecture and Signal Detection

This voltage input module provides 24 VDC discrete sensing for GE RX3i systems. It features 16 isolated input channels for reliable signal acquisition. Each channel detects on/off states from sensors and field devices. The module groups inputs into two isolated banks of eight channels. This architecture ensures robust performance in industrial environments.

Technical Specifications

Signal Acquisition and Filtering

The IC694MDL250 captures input signals with a typical 2 ms response time. Each channel includes debounce circuitry for reliable switch reading. The module filters electrical noise to prevent false triggering. Input data updates with the RX3i scan cycle. This provides stable and accurate input status information.

Field Wiring and Connection Details

A removable terminal block simplifies field wiring and module exchange. Each input requires a signal connection and a common return. The module uses two separate commons for isolated banks. Labeling on the terminal block aids identification during installation. This design reduces wiring errors and speeds commissioning.

Power Requirements

The module draws 140 mA from the 5 VDC backplane. Total dissipation reaches 3.5 W at full load. This low consumption suits dense I/O installations.

Installation and Maintenance

Insert the module into any RX3i slot until it seats properly. Secure with the retaining clips. Wire the terminal block before insertion. Replace the module if inputs fail. Check terminal tightness periodically.

Details