Description
2. Product Core Brief
- Model: GE IC693APU302N
- Brand: GE Fanuc / Emerson Automation
- Series: Series 90-30
- Core Function: Dual-axis motion positioning control
- Product Type: Axis Positioning Module (APM)
- Key Specs: 2 axes, 5 V DC backplane, 800 mA load
- Lifecycle: ⚠️ Discontinued / Obsolete – Surplus & Refurbished available
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | IC693APU302N |
| Manufacturer | GE Fanuc (now Emerson Automation) |
| Series | Series 90-30 |
| Module Type | Axis Positioning Module (APM) |
| Axes Controlled | Two (2) |
| Operating Modes | Standard; Follower electronic gearing |
| Power Requirement | +5 V DC from PLC backplane |
| Current Draw | ~800 mA @ 5 VDC backplane |
| Connectors | Two 24-pin high-density; one communications port |
| Compatible CPUs | CPU 311, 313, 323; CPU 331 and higher |
| Max APM Modules | Up to 3 with embedded CPUs; up to 8 with higher CPUs |
| Status LEDs | EN1, EN2, STST/STAT, OK, CFG |
| Servo Loop Update | ~2 ms nominal |
| Mounting | Series 90-30 PLC rack |
- IC693APU302N
4. Product Introduction
The GE IC693APU302N is a two-axis Axis Positioning Module (APM) for the GE Fanuc Series 90-30 PLC platform, providing integrated motion and positioning control for industrial motion systems. It directly handles dual axis servo/stepper moves under PLC supervision, enabling coordinated motion within the logic program.
This module runs off the Series 90-30 +5 V backplane and supports both standard motion and follower (electronic gearing) mode, with ~2 ms update capability. Because the Series 90-30 line is discontinued, verified surplus and tested stock are essential to maintain uptime and compatible operation with existing PLC racks.
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Module doesn’t power LED up | No +5 V backplane power | ✅ High | Measure +5 V at module slot contacts with meter | Verify backplane power and fuse; replace PSU before module |
| APM LEDs present but no motion | Improper APM config / servo cables | ⚠️ Medium | Check servo drive wiring & config; confirm mode set in software | Confirm motion profile and wiring diagram |
| Erratic axis movements | Noise / termination on feedback | ⚠️ Medium | Check encoder/ resolver cable shields and grounding | Tighten shields; re-terminate cables |
| PLC doesn’t see motion status | Communications handshake issue | ❌ Low | Observe LED COM/CFG status fault code | Reload correct configuration via Motion software |
| Follower mode not tracking | Mismatched master pulse settings | ⚠️ Medium | Validate master pulse source and scale | Adjust motion configuration parameters |
Note: Most failures in Series 90-30 motion systems stem from power backplane issues or mis-configured motion parameters, not APM hardware itself. Document LED states, power rails, and cable routing before replacement.
6. Frequently Asked Questions (FAQ)
Q1: Can I install IC693APU302N into any Series 90-30 PLC rack?
A: Yes, it fits any standard Series 90-30 baseplate that supplies +5 V DC. Ensure the rack power supply can handle the cumulative current of multiple APM modules.
Q2: Does this module support follower (electronic gearing) mode?
A: Yes. It supports both standard motion control and follower electronic gearing, selectable in motion configuration tools like VersaPro.
Q3: Why do I see EN1/EN2, OK, CFG LEDs but no motion output?
A: Those LEDs indicate module power and status. Lack of motion usually points to servo wiring, config error, or improper feedback scaling, not module failure. Confirm wiring and software params before swap.
Q4: Is it hot-swappable?
A: No. The APM must be installed with the PLC powered down. The Series 90-30 backplane isn’t designed for live insertion; hot swapping can corrupt motion state.
Q5: What software do I need to configure this module?
A: Motion modules in Series 90-30 PLCs are configured using VersaPro or legacy Motion programmer packages. Ensure you have the correct version that supports IC693APU30x series.
Q6: Why is this cheaper than new OEM?
A: This part is discontinued/obsolete and only available as new surplus or refurbished tested stock. No current factory production exists, so pricing reflects secondary market inventory.





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