Description

The GE IC694MDL660 is a high-density discrete input component designed specifically for the PACSystems RX3i controller platform. This module allows the system to monitor 32 distinct 24V DC input signals from field devices. Because of its compact design, it maximizes rack space efficiency in complex automation setups. The unit provides four isolated groups to ensure signal integrity across different electrical circuits. This hardware is a reliable solution for modern industrial environments requiring precise digital signal acquisition.

Key Technical Specifications

This module offers robust electrical characteristics to handle diverse industrial signaling needs. The following specifications define its operational limits.

• Input Voltage: 24V DC nominal (0V to 30V DC range)
• Input Points: 32 channels organized into four groups of eight
• Current Consumption: 300 mA from the backplane (all inputs active)
• Input Current: 7.0 mA per point at rated voltage
• Isolation Voltage: 250V AC continuous between input groups
• On-State Voltage: 11.5V to 30V DC
• Off-State Voltage: 0V to 5V DC
• Filter Settings: Seven selectable times from 0.5ms to 100ms

Configurable Filtering and Noise Suppression

The IC694MDL660 features a sophisticated software-configurable input filtering system. Operators can choose from seven different filter constants to eliminate unwanted electrical noise. These settings effectively prevent false triggers caused by mechanical contact bounce or electromagnetic interference. By adjusting the response time, engineers can optimize the module for specific application speeds. This flexibility improves the overall stability of the control logic. Furthermore, the filtering ensures that only valid state changes reach the RX3i CPU.

System Compatibility and Diagnostics

Reliable operation requires the IC694MDL660 to pair with modern PACSystems RX3i hardware. Specifically, the module requires an RX3i CPU running firmware version 2.90 or higher. Users must also utilize high-density terminal blocks like the IC694TBB032 or IC694TBS032 for wiring. The front panel includes 32 green LED indicators for real-time channel diagnostics. These LEDs provide instant visual confirmation of input states during troubleshooting. Additionally, the module supports standard hot-swapping procedures within the RX3i universal backplane.