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Phone: +86 16626708626Description
Product Core Brief
- Model: IC693ALG2221NP
- Brand: GE Fanuc (Emerson)
- Series: Series 90-30
- Core Function: Converts analog voltage signals to digital for PLC processing
- Product Type: Analog Voltage Input Module
- Key Specs: 16 single-ended or 8 differential channels, 0-10 V unipolar or ±10 V bipolar, 12-bit resolution (approx. 2.5 mV/count unipolar)
- Condition: New Surplus / New Original (obsolete part, limited spares available)
- IC693ALG2221NP
Key Technical Specifications
- Module Type: Analog Voltage Input
- Channels: 1–16 selectable single-ended; 1–8 selectable differential
- Input Ranges: 0 to +10 V (unipolar); –10 to +10 V (bipolar); selectable per channel
- Resolution: 2.5 mV per count (0 to +10 V); 5 mV per count (–10 to +10 V)
- Update Rate: 6 ms (all 16 single-ended); 3 ms (all 8 differential)
- Absolute Accuracy: ±0.25% full scale at 25°C; ±0.5% over operating range
- Linearity: <1 LSB
- Isolation: 1500 V between field and logic side
- Input Impedance: >500 kΩ (single-ended); >1 MΩ (differential)
- Common Mode Voltage: ±11 V max (differential mode)
- Power Consumption: 112 mA max from +5 V backplane; 41 mA max from isolated +24 V backplane
- Operating Temperature: 0 to 60 °C
- LED Indicators: MODULE OK (green), Power Supply OK (green)
- Status: Obsolete by manufacturer – spares only
Product Introduction
The GE Fanuc IC693ALG2221NP is a 16-channel analog voltage input module for the Series 90-30 PLC system. It accepts field voltage signals (typically from sensors, transmitters, or potentiometers) and converts them to digital values the CPU can use for process monitoring and control in applications like temperature, pressure, level, or position feedback.
This high-density module stands out for packing 16 single-ended or 8 differential channels into one slot, with per-channel range selection and fast update times. Field teams pick it for existing 90-30 racks where adding more analog points without expanding hardware saves cost and downtime. Built-in isolation and diagnostics help catch wiring or supply issues quickly.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No LEDs lit on power-up | No backplane power or loose insertion | ✅ High | Measure +5 V and isolated +24 V at rack pins | Confirm rack PSU output; reseat module |
| MODULE OK LED off or flashing | Config not loaded or module fault | ✅ High | Check Proficy ME diagnostics for module status | Re-download config; replace if persistent |
| Power Supply OK LED off | Isolated +24 V missing or converter fail | ✅ High | Verify external +24 V supply to rack; measure module pins | Fix power feed first; module rarely fails here |
| Readings stuck at 0 or full scale | Wiring open/short or range mismatch | ✅ High | Measure input voltage at terminals with multimeter | Confirm field signal; check configured range |
| Erratic or noisy readings | Ground loop, noise, or poor shielding | ✅ Medium | Check shielding continuity; scope input if possible | Improve grounding; add filters if needed |
| Channel values don’t update | Scan time too slow or CPU fault | ❌ Low | Monitor %AI references in logic; force update test | Check CPU sweep time; issue usually upstream |
| All channels read same value | Common mode exceed or COM wiring error | ✅ High | Verify COM terminal tied correctly; measure differential | Rewire COM; differential mode needs proper pairing |
Analog input problems in 90-30 systems almost always come from field wiring, power, or configuration mismatches rather than the module failing outright. Grab screenshots of %AI data, LED states, and config settings. Send them over if you’re stuck—we can spot the usual gotchas fast.
Frequently Asked Questions (FAQ)
Is IC693ALG2221NP the same as IC693ALG222? Yes, functionally identical. The “1NP” suffix likely denotes a specific revision, batch, or internal marking (seen with part 6720000187 in surplus listings). Pinouts, ranges, and behavior match the standard IC693ALG222 datasheet. We’ve swapped them without issues in dozens of 90-30 racks.
Is this module still made new by Emerson? No, Series 90-30 analog modules are long obsolete. We carry new surplus—unused, factory-sealed or new-old-stock pulled from mothballed systems. They test the same as day-one units but without OEM backing.
Can I mix single-ended and differential channels on one module? No. The mode (single-ended or differential) applies to the whole module via hardware jumpers or config. Pick one or the other when wiring. Differential gives better noise rejection but halves your channel count.
How do I configure input ranges per channel? Use Proficy Machine Edition (or LM90) hardware config. Each channel gets its own range (unipolar/bipolar) and scaling. Default is single-ended 0–10 V unipolar. Always verify against your field signals—wrong range gives clipped or offset readings.
Will swapping this module lose my analog scaling or logic? No. Scaling and %AI addressing live in the CPU config and program. Power down, swap, power up—the new module pulls the config automatically if the slot matches. Just match firmware revision on the rack if you’re paranoid.
Why surplus pricing vs. refurbished? Surplus units never saw field cycles—no thermal stress, no capacitor aging. Refurbished ones often come from failed installs and get repaired, which can leave hidden wear. Every IC693ALG2221NP we ship gets powered up in a 90-30 rack, inputs stimulated, and full %AI checked before boxing.
What warranty applies? 1-year functional warranty when installed to spec. Covers manufacturing defects, not ESD, wiring errors, or overvoltage. We provide test data on request—photos of bench readings included.
