Description
Product Model: IC693MDL655H
Product Brand: GE (General Electric)
Product Series: Series 90-30 PLC Input Modules
Product Features:
• Thirty-two discrete 24 V DC input points for flexible signal acquisition
• Supports both positive and negative logic wiring configurations
• Four isolated groups of eight channels for electrical separation
• LED indicators for per-point status visualization
Technical Specifications
| Specification | Details |
|---|---|
| Model | IC693MDL655H |
| Series | GE Series 90-30 PLC I/O |
| Module Type | Discrete Digital Input |
| Input Voltage | 24 VDC Positive/Negative Logic |
| Number of Inputs | 32 discrete points |
| Groups | 4 × 8 inputs with isolated common |
| Input Voltage Range | 0–30 VDC |
| Input Current | ~7.0 mA typical ON @ 24 VDC |
| On-State Voltage | 11.5–30 VDC |
| Off-State Voltage | 0–5 VDC |
| Isolation | 1500 V field-to-logic; 250 V group-to-group |
| Response Time | ≤2 ms (on/off) |
| Backplane Power | 195 mA @ 5 V; 224 mA @ 24 V |
| Indicators | LED per input point |
| Mounting | Series 90-30 baseplate slot |
- IC693MDL655H
Product Role & System Fit
The IC693MDL655H is a high-density discrete input module designed to extend the digital sensing capabilities of GE Series 90-30 programmable logic controllers (PLCs). In automation architecture, this module acts as the frontline interface between real-world sensors, switches, and the PLC’s CPU, capturing on/off discrete signals and presenting them as logical input data usable by ladder logic or structured text programs.
Within a typical Series 90-30 rack, the IC693MDL655H installs in any available I/O slot and communicates with other system components via the backplane. Its 32 input channels significantly reduce the number of modules needed in applications where numerous field signals require monitoring. This compact footprint helps conserve valuable cabinet space in industrial environments such as manufacturing lines, material handling systems, and complex process plants.
Crucially, this module supports both positive and negative logic input wiring, meaning whether the connected sensor sources current (sourcing) or sinks current (sinking), the IC693MDL655H can be configured to interpret the logic state correctly. This flexibility simplifies field wiring design and allows mixing of device types — for example, proximity switches, limit switches, and pushbuttons — without needing separate modules for each logic style.
Integration with the broader Series 90-30 ecosystem is straightforward. Once installed and powered, the module’s discrete inputs are mapped to PLC memory bits (e.g., %I addresses) and are available for logic evaluation in the controller program. LEDs provide instant local feedback on input status, which is helpful during commissioning and troubleshooting.





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