Product Introduction
The GE IC693MDL655 is a high-density discrete input module from the Series 90-30 programmable logic controller (PLC) platform, originally manufactured by GE Fanuc and now supported by Emerson Automation. This module offers robust performance for industrial automation applications requiring reliable digital signal acquisition. With 32 input channels operating at 24 VDC, the IC693MDL655 accepts voltage signals from 0 to 30 VDC and draws 7 mA per channel. Its flexible positive/negative logic wiring configuration simplifies integration with diverse field devices such as limit switches, proximity sensors, and pushbuttons.
Built for longevity, the GE IC693MDL655 module provides optocoupler isolation rated at 1500 volts between field and logic sides, ensuring safe operation in electrically noisy environments. As a discontinued/obsolete product, it remains a cost-effective spare for existing Series 90-30 systems, delivering long-term value by extending the life of installed PLC infrastructure.
Technical Specifications
| Parameter |
Value |
| Brand |
GE Fanuc (now Emerson Automation) |
| Part Number |
IC693MDL655 |
| Series |
Series 90-30 |
| Module Type |
Discrete Input |
| Number of Channels |
32 (four groups of 8) |
| Nominal Input Voltage |
24 VDC |
| Input Voltage Range |
0–30 VDC |
| Input Current per Channel |
7 mA typical at 24 VDC |
| On-State Voltage Range |
11.5–30 VDC |
| Off-State Voltage |
0–5 VDC |
| On-State Current (min) |
3.2 mA |
| Off-State Current (max) |
1.1 mA |
| Response Time (On/Off) |
2 ms typical, 2 ms maximum |
| Backplane Current Draw |
195 mA @ 5 VDC; 224 mA @ 24 VDC |
| Isolation (Field to Logic) |
1500 V (optocoupler) |
| Connector Type |
Two male 24-pin (Fujitsu FCN-365P024-AU) |
| Product Lifecycle Status |
Discontinued / Obsolete |
Industry Applications
The GE IC693MDL655 excels in discrete manufacturing and process control environments where reliable digital input sensing is critical. Typical applications include:
- Monitoring limit switches and proximity sensors in conveyor systems.
- Reading pushbutton and selector switch status in control panels.
- Acquiring BCD thumbwheel switch inputs for setpoint entry.
- Interfacing with level switches in tank monitoring systems.
Its 32-point density reduces the number of modules needed, lowering overall system cost and cabinet space. The flexible wiring logic simplifies retrofitting into existing Series 90-30 racks, making it a smart choice for maintaining legacy automation assets.
Installation & Setup Guidance
Installing the GE IC693MDL655 is straightforward: simply insert the module into any available I/O slot of a Series 90-30 5-slot or 10-slot baseplate. The module occupies a single slot and works with both CPU and expansion baseplates. Front-panel LED indicators (A1–A8, B1–B8, C1–C8, D1–D8) provide immediate visual feedback per group.
Field wiring uses two pre-mounted male 24-pin connectors (Fujitsu FCN-365P024-AU). Use pre-wired cables such as IC693CBL327 or IC693CBL328 (sold separately) or custom-build cables. Ensure the input voltage stays within 0–30 VDC and respect polarity for positive logic configurations. The module supports both sinking and sourcing wiring thanks to its positive/negative logic capability.
Compatibility & Integration
The GE IC693MDL655 integrates seamlessly with all Series 90-30 PLC CPUs, including embedded and modular versions. It mounts on any 5- or 10-slot baseplate, whether used as CPU, I/O expansion, or remote I/O rack. The module's backplane interface draws 195 mA @ 5 VDC and 224 mA @ 24 VDC, compatible with standard Series 90-30 power supplies.
For systems requiring replacement or expansion, this module directly replaces older discrete input modules while maintaining full backward compatibility. Its 32-point high-density design optimizes slot usage, leaving room for additional I/O or communication modules.
Selection Guide & Purchasing Advice
Before purchasing the GE IC693MDL655, verify that your system baseplate has an available I/O slot and adequate backplane power. The module requires two 24-pin connectors and compatible pre-wired cables for field wiring—ensure these are in stock if needed. Since this product is discontinued/obsolete, confirm its suitability for your application and check for available spares.
UBEST Automation provides reliable sourcing for the GE IC693MDL655 and many other Series 90-30 components. We test each module for functionality to ensure you receive a dependable part for your critical automation needs. Contact us for stock availability and pricing.