GE IC694MDL660 Product Review: Key Specs & Use Cases
Overview of the GE IC694MDL660 Input Module
The GE IC694MDL660 is a high-density discrete input module for the PACSystem RX3i programmable automation controller. Originally produced by GE Intelligent Platforms and now under Emerson Automation, this module offers 32 input channels arranged in four groups of eight channels each. It supports both positive and negative logic wiring configurations, providing flexibility for various field device connections. The module accepts input voltages from 0 to 30 VDC with a nominal rating of 24 VDC, and each channel draws 7.0 mA at rated voltage. This makes the IC694MDL660 suitable for monitoring discrete sensors and switches in industrial environments.
Key Specifications
- Inputs: 32 discrete channels (4 groups of 8)
- Input voltage range: 0–30 VDC
- Nominal input voltage: 24 VDC
- Input current: 7.0 mA per point at rated voltage
- On-state voltage: 11.5 – 30 VDC
- Off-state voltage: 0 – +5 VDC
- On-state current: 3.2 mA typical
- Off-state current: 1.1 mA maximum
- Selectable input filter times: 0.5, 1.0, 2.0, 5.0, 10.0, 50.0, and 100.0 ms
- Isolation: Field to backplane – 250 VAC continuous, 1500 VAC for one minute; Group to group – same ratings
- Current draw: 195 mA @ 5 VDC; 224 mA @ 24 VDC
- Power consumption: 300 mA total
- Compatibility: Requires RX3i CPU release 2.90 or later
- Required terminal blocks: IC694TBB032 (box-style) or IC694TBS032 (spring-style)
Technical Highlights
One of the standout features of the GE IC694MDL660 is its configurable input filter times. Engineers can select from seven filter settings ranging from 0.5 ms to 100 ms. This flexibility helps eliminate false positive and false negative readings caused by mechanical bounce or environmental factors like dust. The chosen filter setting directly determines both the on and off response times for each input channel. Additionally, the module includes diagnostic capabilities through a terminal block that reports directly to the RX3i CPU, enabling easier troubleshooting. Each input channel has a dedicated LED indicator that illuminates when the channel is in the on state (logic 1), providing immediate visual status.
Applications and Use Cases
The IC694MDL660 is ideal for applications requiring high-density discrete input monitoring in manufacturing, process control, and material handling systems. Its ability to handle both positive and negative logic simplifies integration with diverse sensor types. The group isolation (250 VAC continuous, 1500 VAC for one minute) enhances system reliability by preventing fault propagation between input groups. Typical use cases include monitoring limit switches, proximity sensors, pushbuttons, and other 24 VDC field devices. The module’s active lifecycle status ensures ongoing availability and support for new and existing PACSystem RX3i installations.
Conclusion
The GE IC694MDL660 delivers reliable, high-density discrete input capability with robust isolation and adaptable filter settings. Its compatibility with PACSystem RX3i CPUs and straightforward wiring options make it a practical choice for automation engineers. For detailed installation guidance, refer to the official documentation and use the specified high-density terminal blocks.