Description
In manufacturing assembly lines, robotic workcells, and material handling systems where proximity sensors, limit switches, and photoeyes must deliver reliable status feedback under variable field wiring polarities, the GE IC693MDL655J provides high-density 24 VDC input sensing for Series 90-30 PLC racks.
It excels in industrial automation for palletizers, conveyor sortation, and packaging machines handling 32 discrete points (four isolated groups of eight) with positive/negative logic flexibility, ensuring logic 1 assertion from 11.5-30 VDC signals while opto-couplers block noise from nearby VFDs or welders.
Product Introduction & Positioning
The GE IC693MDL655J is a 32-point 24 VDC positive/negative logic input module for GE Fanuc Series 90-30 PLCs, mapping to 32%I bits with 7 mA typical current draw per point and shared commons per group for tidy field termination. It snaps into any expansion rack slot, consuming backplane power (195 mA max @ +5 VDC; 224 mA typical @ +24 VDC user supply).
In 90-30 architectures, it complements outputs for sensor-actuator loops, with Proficy Machine Edition or Logicmaster forcing inputs for commissioning. The “J” revision indicates firmware/hardware enhancements for extended reliability.
Panel builders position it for cost-effective high-point-count sensing where universal polarity cuts wiring errors versus fixed-logic modules.
- IC693MDL655J
Key Technical Features & Functional Benefits
Inputs respond in ≤2 ms on/off with 1500 V field-logic isolation plus 250 V group-group, handling 0-30 VDC range (off-state 0-5 VDC) across TTL/PNP/NPN devices. Minimum on-state current (3.2 mA) suits low-power sensors without pullups.
Rugged metal housing endures 0-60°C cabinets with natural convection, weighing ~0.4 kg and featuring no module LEDs (rack-level status only). Internal diagnostics latch field faults into PLC tables.
Proven 200k+ hour MTBF via opto-isolated design, UL/CSA/CE compliant for global panels.
Detailed Technical Specifications
| Parameter | Value |
|---|---|
| Model | IC693MDL655J |
| Brand | GE Fanuc Series 90-30 |
| Product Type | 32-point 24 VDC input (pos/neg logic) |
| Input Voltage Range | 0-30 VDC |
| On-State Voltage | 11.5-30 VDC |
| Off-State Voltage | 0-5 VDC |
| Input Current | 7 mA typ @24 VDC (3.2 mA min on) |
| Response Time | ≤2 ms on/off max |
| Isolation | 1500 V field-logic; 250 V group-group |
| Points per Common | 8 (4 groups) |
| Backplane Power | +5 VDC @195 mA max; +24 VDC @224 mA typ |
| Operating Temperature | 0 to 60 °C |
| Terminals | 36-pin 3-row (prewired cables optional) |
| Weight | ~0.4 kg |
Related Modules or Compatible Units
IC693MDL670 – High-speed DC input counterpart for faster scans.
IC693CPU374 – Series 90-30 CPU consuming IC693MDL655J %I data.
IC693BSMxxx – Backplanes housing the IC693MDL655J.
IC693MDL944 – 24 VDC output complement for actuator loops.
Installation Notes & Maintenance Best Practices
Connect GE IC693MDL655J commons to shared DC bus per group, routing sensor returns twisted/shielded >6 inches from power. Verify input currents via multimeter pre-scan; label %I ranges.
Quarterly point-forcing tests for stuck sensors; reseat cables annually in humid areas.




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