The IC694MDL645 serves as a core digital interface for the PACSystems RX3i automation platform. This module provides sixteen discrete input channels to monitor essential field hardware. It effectively processes signals from devices like proximity sensors, limit switches, and industrial pushbuttons. Because the unit supports both sinking and sourcing wiring, it offers high integration flexibility. Although originally a GE Intelligent Platforms product, Emerson now maintains and manufactures this series. This module ensures precise data acquisition for both local and distributed control architectures.
Input Voltage and Switching Parameters
- Operating Voltage Range: 0 to 30 VDC
- Active On-State Voltage: 11.5 VDC to 30 VDC
- Inactive Off-State Voltage: 0 to 5 VDC
- Minimum On-State Current: 3.2 mA
- Maximum Off-State Current: 1.1 mA
- Input Impedance: 3.4 kOhms typical
- Response Speed: 7 milliseconds typical for On/Off transitions
Signal Isolation and Diagnostic Features
- Continuous Isolation: 250 VAC
- Transient Isolation: 1500 VAC for sixty seconds
- Backplane Power Usage: 80 mA maximum at 5 VDC
- Status Monitoring: 16 independent green LEDs indicate channel activity
- Power Indicators: Includes a “Module OK” LED for health checks
System Integration and Compatibility
| Technical Property | Specification |
| Points per Module | 16 (Single group) |
| Logic Compatibility | Positive and Negative Logic |
| Module Weight | 0.3 kg |
| Physical Dimensions | 3.5 x 13.2 x 13.5 cm |
| Status Display | Individual Channel LEDs |
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