Description
GE IC694MDL645 Product Description
Product Overview
The GE IC694MDL645 is a 16-channel 24 VDC digital input module for the GE PACSystems RX3i PLC control platform. It is also backward-compatible with Series 90-30 systems, serving as the discrete signal acquisition interface between field devices and the automation controller.
This module collects status signals from on-site switches, proximity sensors, contactors and push buttons, and transmits the digital state data to the system CPU for logic judgment and interlock control. It supports positive/negative logic and works with both sourcing and sinking field devices. Designed as a single-slot plug-in unit with hot-swap capability, it simplifies installation, expansion and on-site maintenance for industrial control cabinets.
GE IC694MDL645
Core Product Features
- 16 input channels in a single common group, delivering high I/O density in one standard RX3i slot.
- 24 VDC nominal input with 0–30 VDC operating range adapts to common industrial sensor and switch signals.
- Per-channel green LED indicators provide instant visual status for quick fault diagnosis and wiring verification.
- 250 VAC continuous field-to-backplane isolation protects control circuits from ground loops and field surges.
- Software-configurable input debounce filters out mechanical contact bounce and electrical noise.
- Hot-swap design allows module replacement without shutting down the entire PLC system, minimizing downtime.
- Low power draw from the backplane bus supports dense multi-module rack configurations.
- Built-in 24 VDC output terminal supplies sensing power for field devices, simplifying field wiring.
Technical Specifications
| Item | Specification |
|---|---|
| Official Model | IC694MDL645 |
| Product Type | 24 VDC Discrete Input Module |
| Compatible Platform | GE PACSystems RX3i; backward compatible with Series 90-30 |
| Number of Channels | 16 channels, single common group |
| Nominal Input Voltage | 24 VDC |
| Input Voltage Range | 0 VDC to 30 VDC |
| On-State Threshold | 11.5 VDC to 30 VDC |
| Off-State Threshold | 0 VDC to 5 VDC |
| Input Current | 7 mA typical per channel at rated voltage |
| Response Time | 7 ms typical for both on and off states |
| Isolation Rating | 250 VAC continuous (field to backplane); 1500 VAC for 1 minute |
| Power Consumption | 80 mA @ 5 VDC (backplane); 125 mA @ 24 VDC (isolated) |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5%–95% RH, non-condensing |
| Mounting | RX3i backplane slot, hot-swappable |
| Certifications | CE, UL, cULus, industrial EMC compliance |
Application Fields
- Production line status monitoring and interlock control in discrete manufacturing plants
- Conveyor, packaging and material handling equipment sensor and switch signal acquisition
- Motor control center (MCC) status feedback for pumps, fans and compressors
- Power distribution cabinet breaker and disconnect position monitoring
- Building automation and HVAC equipment status sensing
- Legacy Series 90-30 system retrofit and RX3i platform migration projects
Related Model Recommendations
- IC694MDL745: 16-channel 24 VDC digital output module from the same RX3i family, paired with MDL645 for complete discrete control loops.
- IC694MDL660: 32-channel high-density digital input module for applications requiring larger I/O capacity.
- IC694ALG223: Analog input module that complements discrete input modules for mixed-signal control systems.
- IC695CPU315: RX3i series central processor unit that processes input data from MDL645 and other I/O modules.
